Arne H. - Devops Fullstack Engineer

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Bamberg, Germany

Experience

Feb 2025 - Present

9 months

Devops Fullstack Engineer

Designing and implementing a cloud-native microservices architecture for Nubus based on Kubernetes.
Developing backend services and APIs primarily in Python (FastAPI) and Shell scripting.
Creating, deploying, and managing Docker containers, Helm charts, and Kubernetes resources.
Building, maintaining, and optimizing GitLab CI/CD pipelines with full automation and rollback strategies.
Implementing Single Sign-On (SSO) authentication workflows using Keycloak (OIDC integration and customization).
Administering and hardening Debian Linux systems, focusing on security and system stability.
Leading E2E (end-to-end) system testing, including test design, execution, and reporting for full-stack validation.
Operating the platform under Site Reliability Engineering (SRE) principles: monitoring, alerting, performance tuning, incident response, and SLAs.
Driving automation for scaling, deployment, observability (metrics, tracing, logging), and disaster recovery.
Ensuring high availability, resilience, and security compliance across services and infrastructure.
Working collaboratively in agile teams (Scrum) and DevOps culture, with ownership over system reliability and delivery.
Python3
FastAPI
Integration of payload data from devices into an IoT Platform via MQTT broker by integration of MQTT client into background tasks in FastAPI server
REST APIs
Legacy Migration
Kafka
SQL, SQL Alchemy
ML / NLP (Pytorch, Langchain)
IoT Device Integration
Kubernetes
Docker
Linux, Shell

May 2024 - Mar 2025

11 months

Lead Fullstack Engineer

Support in the development of a software solution in the area of conditional procedures.
Implementation of frontend and backend components using Angular and Java technologies in an agile and cross-functional product team.
Development of mathematical optimization algorithms using C++
Experience with medium to large software systems
Defined and implemented automated workflows, including rule-based validation
Led the development of a new workflow approval process for a new product, ensuring compliance with business requirements.
Developed complex automation scripts and backend services primarily in Python, with additional contributions in Shell scripting (KSH & Bash), Java, and Matlab
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, Gitlab, TDD, Java, Spring, Spring Boot, Kotlin, Kafka, Sonarqube
Python3
BSI TR Certifications
HTML Templating (Thymeleaf)
Javascript, CSS
OpenAPI
Rest API Design and Implementation
FastAPI
RDF
PKI
REST APIs
Legacy IoT Migration
SQL, SQL Alchemy
Kubernetes, CI/CD, Docker
OpenAPI
ML / NLP (Pytorch, Langchain)
PostgreSQL, MySQL,, Maven, Gradle
C++ 17/20 Architecture and Implementation
Boost, STL, JsonCPP
Performance optimization of mathematical algorithms
Helped developing a system that optimized supply chain volumes for nation wide distribution of supermarket chain
SQL/JDBC
Unix, Bash, Linux, ACLs, SAN
GIT
Interface Design
Ensure Extensibility and Maintainability of Software
REST
Azure DevOps
JIRA & Confluence
Unit and integration testing tools (e.g., Jasmine, Karma, Jest)
Scrum or Kanban methodologies.

Apr 2024 - Present

1 year 7 months

Lead Fullstack Engineer

Develop and enhance Angular-based UIs for energy sector applications.
Implement image and grid model editors for SCADA environment visualization.
Integrate microservices (Java Spring Boot, .NET) into frontends.
Build dashboards to visualize real-time energy data.
Debug and resolve issues in visualization tools and editors.
Analyze and adopt new technologies for energy-related front-end projects.
Collaborate with cross-functional teams to clarify energy domain requirements.
Create technical roadmaps and provide project effort estimates.
Perform unit and integration tests to ensure system reliability.
Defined and implemented automated workflows, including rule-based validation
Led the development of a new workflow approval process for a new product, ensuring compliance with business requirements.
Developed complex automation scripts and backend services primarily in Python, with additional contributions in Shell scripting (KSH & Bash), Java, and Matlab
Docker, Kubernetes, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, Java, Kotlin, Kafka, Sonarqube
Java, Spring, Spring Boot
HTML Templates (Thymeleaf)
Angular, Javascript, CSS
SQL
BSI TR Certifications
RDF
Kubernetes, Docker, CI/CD Gitlab
REST APIs
Angular, TypeScript, state management for micro frontends (e.g., Redux)
OpenAPI
ML / NLP (Pytorch, Langchain)
Angular 14/Angular15
Java Spring Boot, PostgreSQL, MySQL,, Maven, Gradle
.NET, microservices integration
Interface Design
Ensure Extensibility and Maintainability of Software
REST
SCADA systems, image/grid model editors, real-time dashboards.
Integrated Keycloak for authentication and authorization (OAuth2, OIDC, SSO) into enterprise applications.
Implemented secure user management and access control using Keycloak.
Customized Keycloak themes for login and account management portals.
Automated Keycloak client and realm configuration via REST API.
Integrated microservices authentication flows with Keycloak and Spring Boot security adapters.
Databank Concepts
Azure Cloud
Unix, Bash, Linux, ACLs, SAN
Azure DevOps
JIRA & Confluence
Unit and integration testing tools (e.g., Jasmine, Karma, Jest)
Scrum or Kanban methodologies.

Jan 2024 - Present

1 year 10 months

Fullstack Engineer

Support in the development of a software solution in the area of conditional procedures.
Implementation of frontend and backend components using React and PHP technologies in an agile and cross-functional product team.
Development of algorithms using PHP
Experience with medium to large software systems
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, PHP, Laravel, Kafka, Sonarqube
Redis
REST APIs
RDF
SQL
MySQL
Machine Learning (ML): TensorFlow, PyTorch, Scikit-learn, Keras
Hugging Face Transformers, Deep Learning, OpenAI GPT Models (e.g., GPT-4, GPT-3), ChatGPT API, MLOps
GIT
Interface Design
Ensure Extensibility and Maintainability of Software
REST
JIRA & Confluence
Unit and integration testing tools

Sep 2023 - Dec 2023

4 months

Lead Fullstack Engineer

Expansion of a self-developed, web-based ERP application
Conception and development of software, interfaces and database scripts
Architectural advice on in-house web applications
Requirements analysis and recording in close cooperation with the specialist departments
Creation of technical concepts and documentation
Advice on improving code quality
Develop serverless and container-based, scalable solutions based on existing software frameworks and develop them further
Setup and moderation of architecture workshops with stakeholders
Take over active consultation of the customer in order to be able to use appropriate technologies for the optimization of the business processes.
Participated in daily code PRs/Reviews/Approvals.
Participated in on-call rotation and production code promotions.
Ongoing evangelization of CI/CD/CDD and SRE best practices through Lightning Talks, documentation, and developer engagement.
Introduced SCRUM best practices into Team
Docker, Codebeamer, Jenkins, CI/CD, TDD, Java, Kotlin, Kubernetes
PostgreSQL
RabbitMQ, Django
Python3
OpenAPI
TimescaleDB
React, Angular Frontend
Machine Learning (ML): TensorFlow, PyTorch, Scikit-learn, Keras
Hugging Face Transformers, Deep Learning, OpenAI GPT Models (e.g., GPT-4, GPT-3), ChatGPT API, MLOps
Java Spring Boot, Java Spring, Gradle, Maven, JSF, JSP, Thymeleaf
JBoss / WildFly
Kubernetes, Docker & Jenkins
Oracle Database Server, Oracle RDBMS
JPA, Hibernate, FlyWay
Ensure Extensibility and Maintainability of Software
REST
JIRA & Confluence
Selenium
Databank Concepts
Project Management

Aug 2023 - Apr 2024

9 months

Lead Fullstack Engineer

Construction and operation of new internal products to connect customer landscape to a business process management system based on AWS cloud infrastructure.
Lead Frontend Development Engineer
Design of UI Components
Develop serverless and container-based, scalable solutions based on existing software frameworks and develop them further
Take over active consultation of the customer in order to be able to use appropriate technologies for the optimization of the business processes.
Implementation of efficient data structures for recording, storing and providing data for application data as well as reporting
Participated in daily code PRs/Reviews/Approvals.
Participated in on-call rotation and production code promotions.
Ongoing evangelization of CI/CD/CDD and SRE best practices through Lightning Talks, documentation, and developer engagement.
Proposal for detailed software architecture incl. handover to development
Setup and moderation of architecture workshops with stakeholders
Introduced SCRUM best practices into Team
Defined and implemented automated workflows, including rule-based validation
Led the development of a new workflow approval process for a new product, ensuring compliance with business requirements.
Developed complex automation scripts and backend services primarily in Python, with additional contributions in Shell scripting (KSH & Bash), Java, and Matlab
Coordinated with stakeholders to establish rule-based processing standards and manage exception handling.
Conducted process re-engineering to optimize workflows and streamline automation efforts.
Collaborated with business analysts to translate business requirements into technical specifications.
Managed migration and new development efforts, ensuring seamless knowledge transfer to production support and development teams.
Monitored system operations, diagnosed issues, performed root cause analysis, and coordinated remediation efforts with remote support teams.
Worked with UNIX-based systems, utilizing knowledge of process management, file system ACLs, storage concepts (SAN), networking, clustering, and virtualization.
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, Java, Kotlin, Kafka, Sonarqube
Kubernetes
BSI TR Certifications
Java, Spring, Spring Boot
HTML Templates (Thymeleaf)
Angular, Javascript, CSS
SQL
Kubernetes, Docker, CI/CD Gitlab
Angular, TypeScript, state management for micro frontends (e.g., Redux)
OpenAPI
REST APIs
PostgreSQL, MongoDB &RabbitMQ
OpenAPI
Angular 14/Angular15
Java Spring Boot, Postgres, Maven, Gradle
Interface Design
Ensure Extensibility and Maintainability of Software
REST
Unix, Bash, Linux, ACLs, SAN
Selenium
Databank Concepts
Azure Cloud
JIRA & Confluence
Project Management

Jan 2023 - Jun 2023

6 months

Fullstack Engineer

Support in the development of a software solution in the area of conditional procedures.
Implementation of frontend and backend components using React and PHP technologies in an agile and cross-functional product team.
Development of algorithms using PHP
Experience with medium to large software systems
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, PHP, Laravel, Kafka, Sonarqube
Redis
MySQL
Machine Learning (ML): TensorFlow, PyTorch, Scikit-learn, Keras
Hugging Face Transformers, Deep Learning, OpenAI GPT Models (e.g., GPT-4, GPT-3), ChatGPT API, MLOps
GIT
Interface Design
Ensure Extensibility and Maintainability of Software
REST
JIRA & Confluence
Unit and integration testing tools

Nov 2022 - Apr 2023

6 months

Lead Fullstack Engineer

Construction and operation of new internal products to connect customer landscape to a business process management system based on AWS cloud infrastructure.
Lead Frontend Development Engineer
Design of UI Components
Develop serverless and container-based, scalable solutions based on existing software frameworks and develop them further
Take over active consultation of the customer in order to be able to use appropriate technologies for the optimization of the business processes.
Implementation of efficient data structures for recording, storing and providing data for application data as well as reporting
Participated in daily code PRs/Reviews/Approvals.
Participated in on-call rotation and production code promotions.
Ongoing evangelization of CI/CD/CDD and SRE best practices through Lightning Talks, documentation, and developer engagement.
Proposal for detailed software architecture incl. handover to development
Setup and moderation of architecture workshops with stakeholders
Introduced SCRUM best practices into Team
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, Java, Kotlin, Kafka, Sonarqube
Kubernetes
SQL Alchemy
Python3
FastAPI
PostgreSQL, MongoDB &RabbitMQ
OpenAPI
Angular 14/Angular15
Java Spring Boot, Postgres, Maven, Gradle
Interface Design
Ensure Extensibility and Maintainability of Software
REST
Selenium
Databank Concepts
Azure Cloud
JIRA & Confluence
Project Management

Feb 2022 - Dec 2023

1 year 11 months

Senior Fullstack Engineer

Conversion of the platform from monoliths to modular architectures to microservices
Conception and development of solutions
Organization of the system-wide functional process
Implementation of efficient data structures for recording, storing and providing data for application data as well as reporting
Identification of architectural optimization potential
Communication to management and developers
Optimization performance (process durations and CPU/RAM consumption)
Participated in daily code PRs/Reviews/Approvals.
Analysis and improvement of an existing Python application code
Participated in on-call rotation and production code promotions.
Ongoing evangelization of CI/CD/CDD and SRE best practices through Lightning Talks, documentation, and developer engagement.
Proposal for detailed software architecture incl. handover to development
Use of software solutions to accelerate the conversion
Docker, Terraform, Jenkins, Gitlab, Angular 14, Python, Asyncio, FastAPI, RabbitMQ, MongoDB, Sonarqube
SQL Alchemy
Python3
FastAPI
IoT Device Integration
Kubernetes, Docker & Jenkins
CI/CD, TDD
PostgreSQL, TimescaleDB
Integrated Keycloak for authentication and authorization (OAuth2, OIDC, SSO) into enterprise applications.
Implemented secure user management and access control using Keycloak.
Customized Keycloak themes for login and account management portals.
Automated Keycloak client and realm configuration via REST API.
Integrated microservices authentication flows with Keycloak
Pandas & Numpy, Scipy & scikit-learn, Django
OpenAPI
Interface Design
Ensure Extensibility and Maintainability of Software
REST
JIRA & Confluence
Project Management

Jan 2022 - Jul 2022

7 months

Fullstack Engineer

Support in the development of a software solution in the area of conditional procedures.
Implementation of frontend and backend components using React and PHP technologies in an agile and cross-functional product team.
Development of algorithms using PHP
Experience with medium to large software systems
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, PHP, Laravel, Kafka, Sonarqube
Redis
MySQL
Machine Learning (ML): TensorFlow, PyTorch, Scikit-learn, Keras
Hugging Face Transformers, Deep Learning, OpenAI GPT Models (e.g., GPT-4, GPT-3), ChatGPT API, MLOps
Integration of Sensor Data from devices into an IoT
Integration of MQTT client into background tasks in FastAPI
GIT
Interface Design
Ensure Extensibility and Maintainability of Software
REST
Integrated Stripe API for secure payment processing in web and mobile applications.
Implemented subscription and one-time payment flows with PayPal REST APIs.
Developed secure payment workflows including webhook handling for payment providers (Stripe)
Built custom billing logic for SaaS platforms including refunds, invoices, and receipts with Stripe API
Ensured PCI-DSS compliance in applications handling sensitive payment data.
JIRA & Confluence
Unit and integration testing tools

Jun 2021 - Present

4 years 5 months

Fullstack Team Lead

Planning and executing of technology vision
Designed and evolved the Architecture of the system
Individual Contributor on a small Platform Team responsible for a Kubernetes-based PaaS. Key technologies included
Migration of software architecture and operational readiness to microservice landscape
Kubernetes, Helm, Gitlab
Transitioned, released, and delivered several products into Kubernetes.
C++ 17, Boost Library, Java, Spring Boot, REST, Gradle
TimescaleDB
CI/CD, TDD
Kubernetes
IPSEC based VPN overlays
Analysis and improvement of an existing Python application code
Automatic configuration of IPSEC based VPNs
Angular, Javascript/Typescript, HTML, CSS, Python, Asyncio, Threads, Sonarqube, Express
VueJS
Integrated Keycloak for authentication and authorization (OAuth2, OIDC, SSO) into enterprise applications.
Implemented secure user management and access control using Keycloak.
Customized Keycloak themes for login and account management portals.
Automated Keycloak client and realm configuration via REST API.
Integrated microservices authentication flows with Keycloak and Spring Boot security adapters.
FastAPI, Pandas & Numpy, Scipy & scikit-learn
OpenAPI
PostgreSQL
Kubernetes, Docker & Jenkins
Optimization performance (process durations and CPU/RAM consumption)
Developed microservices and architecture for monitoring components
High performance timeseries db implementation
Ensure Extensibility and Maintainability of Software
Event streaming platform
JIRA & Confluence
Domain Driven Design
Design Pattern Libraries
Kubernetes Helm charts and Gitlab pipelines for automated publishing of releases
SNMP based microservice for fault detection of members of overlay

Jun 2021 - Dec 2021

7 months

Fullstack Engineer

Support in the development of a software solution in the area of conditional procedures.
Implementation of frontend and backend components using React and PHP technologies in an agile and cross-functional product team.
Development of algorithms using PHP
Experience with medium to large software systems
Docker, Terraform, Jenkins, AWS, Gitlab, CI/CD, TDD, PHP, Laravel, Kafka, Sonarqube
Redis
MySQL
Integrated Stripe API for secure payment processing in web and mobile applications.
Implemented subscription and one-time payment flows with PayPal REST APIs.
Developed secure payment workflows including webhook handling for payment providers (Stripe)
Built custom billing logic for SaaS platforms including refunds, invoices, and receipts with Stripe API
Ensured PCI-DSS compliance in applications handling sensitive payment data.
Machine Learning (ML): TensorFlow, PyTorch, Scikit-learn, Keras
Hugging Face Transformers, Deep Learning, OpenAI GPT Models (e.g., GPT-4, GPT-3), ChatGPT API, MLOps
GIT
Interface Design
Ensure Extensibility and Maintainability of Software
REST
JIRA & Confluence
Unit and integration testing tools

Jun 2021 - Dec 2021

7 months

Fullstack Team Lead

Developed a proof-of-concept (PoC) video streaming system leveraging Real-time Transport Protocol (RTP) and Session Initiation Protocol (SIP)
Project aimed to establish a scalable, real-time communication framework for high-quality video streaming with seamless session management.
RTP for real-time media transport, ensuring low-latency and high-quality video transmission
SIP-based session management for initiating, modifying, and terminating video stream
End-to-end video call setup, including stream negotiation and codec selection
Integration with WebRTC and SIP softphones for browser-based and VoIP client compatibility
Adaptive bitrate streaming and error recovery mechanisms for network resilience
Deployment on Kubernetes with scalable media servers for dynamic load balancing
Logging and monitoring using Grafana and Prometheus for stream performance analytics
Successfully demonstrated the feasibility of RTP/SIP-based video streaming in a real-time environment, providing a foundation for future VoIP, teleconferencing, and multimedia communication solutions.

Mar 2021 - Nov 2021

9 months

Software Team Lead / Architect - Full Stack

Planning and executing of technology vision
Designed and evolved the Architecture of the system
Implementation of efficient data structures for recording, storing and providing data for business intelligence data as well as reporting
Advanced development of an application for data processing around the topic of demand response of energy providers interfaced with virtual power plants
Optimized core of the control of industrial plants and large batteries for grid stabilization
Integrated Enterprise Application and customer facing SaaS-Platform into IoT Service Landscape
Design, support and improve the core services components implementation together with internal and external Development Teams and Partners
Optimization performance (process durations and CPU/RAM consumption)
Find technical Solutions for the implementation and optimization of Business Processes across various Systems in close cooperation and collaboration with the Business Owners, Program Leads, Product Owners etc.
Developed algorithms for and the marketing of balancing energy on the electricity market
Distributed environment using Python, SQL-Server, Flask, Javascript, Typescript, CSS, HTML, Angular 14, FastAPI, SQLAlchemy, PostgreSQL, Express
Selenium
Hexagonal Software Architecture
Databank Concepts
Pandas & Numpy, Scipy & scikit-learn
Development Integrations with Jenkins and Groovy script
Ensure Extensibility and Maintainability of Software
JIRA & Confluence
Docker
Further: Git, REST, React
Microservices
Implemented local build and test environment workflow using Packer, Vagrant, Ansible, and Bash (Windows and Linux).
Participated in CI/CD discussion/design.
Participated in daily code PRs/Reviews/Approvals.
Participated in on-call rotation and production code promotions.
As Scrum Master for my team, worked closely with TPM/PO to facilitate Agile adoption.
Domain Driven Design Introduction
Procedure model: Agile and short development and release cycles (SCRUM)
Project Management

Nov 2019 - Nov 2021

2 years 1 month

Software Team Lead

Planning and executing of technology vision at start-up
Introduced new structure to hold process and mission oriented meetings to make meetings more efficient and result oriented
Got MVP through goal line, now serving 10000+ customers on daily basis
Lead product and technology department (5-10 subordinates)
Design and proof of concept (POC) of core components of backend logic & engine (Message processing and handling etc.) Elixir & Phoenix
Platform based on Elixir OTP / Phoenix / VueJS (as PWA) / Postgres, Java EE, Gradle
Prototype with Angular
Coordinated Product Owner with tasks regarding feature requirements & planning
Developing Domain Driven Design for the Platform as Architecture
DevOps Tasks with Heroku, Docker, Spinnaker and Terraform + Google Cloud
Implementing new features according to software requirements
Architectural conception of platform
Integrated web crawler POC and background worker based on hound library
Progressive Web Apps with Angular and React
REST

Nov 2019 - Sep 2020

11 months

Software Engineering Consultant

Lead team of 3-4 developers
Managing requirements in an agile development environment
Created new requirements with respect to identified needs of domain and in close collaboration with domain experts (Mathematicians and Statisticians)
Planning and implementation of JAVA EE components (JBoss, WildFly) within clients requirements using JPA/Hibernate, Oracle DB, Multi-Threading and advanced algorithms and data structures
EJB 2 (Enterprise JavaBeans), Maven
PostgreSQL
Hexagonal Software Architecture
Databank Concepts
MongoDB
Sonarqube
Frontend components using JSP/JSF
Helped refining Domain Model using UML
Consulted frontend development team: design and implementation of JSF (Primeface) components
Security evaluation of web applications using OWASP Top Ten guidelines

May 2019 - Apr 2020

1 year

Software Teamlead

Lead team of 6-8 Developers
Teams developed embedded software to control electric axle drives for several large OEMs (BMW, Mercedes, Jaguar)
Managing requirements and deadlines in an agile development environment
Creating new requirements
Release and Milestone planning
PostgresSQL
Python
Process monitoring, resiliency mechanisms and operations for real-time data
Functional Architecture
Functional Safety Concepts
Automobile Spice
Extending DOORS and Clearquest Software by custom scripts

Dec 2018 - Jun 2019

7 months

Senior Developer

Implemented Backend Logic (Message processing and handling) Elixir & Phoenix
Project is a realtime app based on Elixir OTP / WebSocket in the gaming industry
Supported Product Owner & Software Architect with tasks regarding feature requirements & planning
DevOps Tasks with Docker, Spinnaker and Terraform + Google Cloud
Implementing new features according to software requirements
Frontend Javascript, Typescript, React (PWA as replacement for native App), Java Spring
Backend Erlang, Elixir, Postgres + Python Django
Transitioned Backend from Ruby on Rails Framework to Elixir
REST

Dec 2018 - May 2019

6 months

Senior Developer

Implement Backend Logic (Message processing and handling) Kotlin & Spring & NodeJS
Frontend development with Angular, Javascript, CSS, HTML, Typescript
Backend Spring Boot / Java Spring Boot / JBoss + WildFly / Postgres / Legacy Components with EJB2, EJB3, NodeJS + Express
Sonarqube
Maven
OpenAPI
React
Support Product Owner & Software Architect with tasks regarding feature requirements & planning
DevOps Tasks with Kubernetes & Docker
Implementing new features according to software requirements & SCRUM process
Develop integration tests based on Gulp, NodeJS, and Kotlin

Oct 2018 - Dec 2018

3 months

Full-Stack Senior Developer

Resmio

Implemented Backend Logic Python & Django & Flask
Implemented Frontend Logic ReactJS & vanilla Javascript & JQUERY
Supported Product Owner & Software Architect with tasks regarding feature requirements & planning
Helped DevOps running regression tests and finding and fixing performance bugs

May 2018 - Dec 2018

8 months

Senior Developer

Siemens Consulting

Implement Cache Generation Logic using Java / Apache / Java Spring / React
Deployment on AWS
Use Windows MFC / C++ to dynamically generate embedded HTML
Frontend with Angular and another Client side App with VueJS
Implementing new features according to visual design style-guide standards and specifications
Develop responsive UI website prototypes

May 2018 - Aug 2018

4 months

Full-Stack Senior Developer

Audatex Company Consulting

Restructure and rebuild the front-end solution migrating from Angular2 to Angular2+ and RxJS, Other technologies used: Sass, Gulp, NodeJS, NPM, Typescript, Java Spring, Express
Provide training and support for team members within front-end technologies
Do pair programming to ensure a good understanding of new technologies and techniques
Attend and lead code reviews and provide knowledge and support for creating a better code base
Research and promote cutting edge technologies and design patterns like Angular 2, TypeScript, Redux, Reactive Programming, ES6, build and deploy tools etc
Create a positive atmosphere
Resolve tech debt and outdated processes
Analyse security issues with outdated packages

Jan 2018 - Present

7 years 10 months

Full-Stack Developer

Several clients

Restructure Working with clients and UX designers to deliver working software to business
Designed and implemented Restful APIs according to customer requirements, including persistence with Mongodb and PostgreSQL
Helped shipping brawler.gg, a innovative gaming challenge using Twitch APIs
Design and implement React/Redux applications
Javascript, Nodejs + Express
FastAPI, SQLAlchemy, PostgreSQL, Express
Pandas & Numpy, Scipy & scikit-learn
Ruby on Rails
Swagger / OpenAPI
Champion new technologies and techniques
Provide support and mentoring for the members of the team
Technical exploration: Prototyping and Spiking activities
Delivering working software in agile teams
Technology evaluation, estimation and technical documentation
Solution architecture and implementation
Java, Postgres
Javascript, CSS, HTML

Jan 2018 - May 2018

5 months

Embedded Full-Stack Developer

NDA

Developed firmware for Atmel AVR microcontrollers firmware incorporating non-linear control algorithms for optimized system behavior.
Integrated Wi-Fi modules for wireless data collection and used IoT protocols for real-time data transfer.
Created a server-side application with Node.js for data management and a dynamic dashboard with React.js for data visualization and remote system control.
Ensured robust error handling, implemented security best practices, and conducted comprehensive system testing.
Ruby on Rails for Backend
Collaborated with cross-functional teams and provided detailed documentation.

Jan 2016 - Jan 2017

1 year 1 month

Mountain View, United States

GSOC Mentor

Google LLC

Mentored contributors in Google Summer of Code (GSoC) for the HPX high-performance C++ runtime
Designed and reviewed project proposals focused on parallel computing, task-based execution, and scalability
Guided mentees in implementing asynchronous programming models and distributed computing techniques
Conducted code reviews for performance optimizations, memory management, and concurrency issues
Provided technical mentorship on C++17/20 features, template metaprogramming, and modern software architecture
Helped integrate HPX with heterogeneous computing frameworks (CUDA, OpenMP, MPI)
Improved HPX’s API design for better usability and efficiency in large-scale computing environments
Optimized thread scheduling and load balancing mechanisms for high-performance computing (HPC) applications
Led discussions on benchmarking, profiling, and performance tuning for parallel workloads
Promoted the use of CI/CD pipelines and automated testing to maintain HPX’s reliability
Supported contributors in debugging, performance analysis, and profiling using tools like Valgrind and Perf
Authored technical documentation and guides for HPX’s future contributors and users

Oct 2014 - Present

11 years 1 month

Fullstack Developer

My main responsibility was to build the Ruby on Rails components runtime interfaces for several startups. On a daily basis, I have been using HTML5, CSS3 and JavaScript as well as RoR to help building the MVC architecture including a restful API .
Worked on several small and large frontend projects using Angular JS, Angular 2+, React JS
Work on NodeJS + Express Backends
Design and specification of REST API endpoints according to Swagger / OpenAPI
Java, Java Beans (EJB2+3), Java EE based backends
Used ActiveMQ for Message brokering
Implementation of several apps including Unity3D augmented reality, hype local messenger apps and full-stack RoR development

Oct 2014 - Jul 2017

2 years 10 months

Researching Developer

University Erlangen

My main responsibility was to build the C++ runtime interfaces for a new high performance runtime. I also worked on a project in embedded software, predicting non-functional properties of System-on-Chip Architectures. On a daily basis, I have been using C++ and modern C++ 2011+ features like template meta-programming. In this process, I have played an important role among the developers leading and helping them deliver their tasks. I have also been in close touch with other project partners, stakeholders and managers to ensure good communication and solution adoption.
Organising team meetings outside office hours to strengthen bounds between members
Discuss personal achievements and provide advice and support during lunch time
Champion the agile process followed within the Dev Team. Ensure that our processes are understood by others
Help and support members choosing and maintaining the path towards improving current aptitudes and gaining new skill sets
Create and maintain a fun atmosphere so team members can feel united working towards a common purpose

Apr 2010 - Oct 2014

4 years 7 months

Junior Developer

Multiple private companies

Set up Git for version control system and offer guidance
Ruby on Rails
Implemented CDN and automated the process for images
Java, Postgres, Java Spring Boot, Maven
Javascript, CSS, HTML
Identify problems and tune up front end
Identify, fix and improve SEO
Used Wordpress and PHP to build custom solutions
Java + Java Spring / Java EE for Backends
Maven
Used JQUERY and Javascript, CSS, HTML to work on the front-end

Summary

Started coding for fun, wrote scripts and bots for games in highschool. Whether it’s building server side applications in PHP, Java or Python or performance tuning of C++ code, I love it.

I used to work as a researcher developing future-ready C++ runtimes for TOP500 Supercomputers, mentored young developers at Google during my work as a Mentor in Google's SoC Program, reaching Exaflop performances. As a developer I help build the future, one line of code at a time, as a researcher I love applying logic and methodology to solve problems. I’m a published scientific author and also spoke at several international conferences.