Jan Lüders - Senior Developer

Hamburg, Germany

Experience

Oct 2024 - Present

1 year 3 months

Senior Developer

#Die.Digitalfabrik GmbH

Languages: PHP7/8 (Shopware 5 & 6), Vue.js, Docker, Oracle, Apache, MongoDB (NoSQL)
Infrastructure: ScaleCommerce (e-commerce cluster, container-based)
Team: 3
Development methodology: Kanban (Jira/Confluence)
Planning and development of various client projects in an agency environment

Apr 2024 - Nov 2024

8 months

Senior Developer

Denkwerk GmbH

Languages: PHP7 (Magento 1.9 & Shopware 5 & 6), Vue.js, Docker, Oracle, Apache, MongoDB (NoSQL)
Infrastructure: MaxCluster (e-commerce cluster, container-based)
Team: 5
Development methodology: Kanban (Jira/Confluence)
Planning (technical & architectural), development and maintenance of the shop bp-online.com

Mar 2023 - Mar 2024

1 year 1 month

Cloud & Infrastructure Project Manager

FFW Hamburg

Infrastructure: Google Cloud Services (Kubernetes, Artifact Registry, Cloud SQL, VPC, IAM, IAP, Storage, PSC, CDNS, Interconnect), IaC with Terraform/Terragrunt, migration from AWS S3 & AWS Lambda to GCS buckets & Google Cloud Functions, AWS IAM
Team: 5
Development methodology: Kanban
Coordination, structuring, process control & monitoring of the operations team for ZDF on behalf of FFW Hamburg

Apr 2022 - Present

3 years 9 months

Chief Technical Officer

NIU Nature GmbH

Languages: PHP8, Symfony, Shopware 6, MySQL, Postgres, Flutter (mobile), .NET 8.0, ProtoBuf, Python
Infrastructure: Google Cloud Services (Cloud Run, Artifact Registry, Cloud Functions, Cloud SQL, Cloud VPC, IAM, IAP, Storage), IaC with Terraform/Terragrunt
Team: 3
Development methodology: Kanban (Jira/Confluence)
Development of a mobile application in Flutter with .NET microservices backend

Mar 2022 - Feb 2023

1 year

Web 3 Developer & Product Owner

MetaCards.gg

Language: Solidity, TypeScript, Nodejs, Python, ReactJS / ReactNative
Infrastructure: AWS (EC2, RDS, EKS, S3, Route53, VPC, IAM)
Team: 5
Development methodology: Scrum
Management and development of a blockchain game (gaming, NFT, wallet hosting)

Jul 2019 - Mar 2022

2 years 9 months

Head of Development, UIT ONE

UIT Services GmbH

Languages: PHP7 (Magento 1.9 & Shopware 5 & 6), Vue.js, React Native, C#, TypeScript, ReactJS / React Native, Docker, Oracle, Apache, MongoDB (NoSQL)
Infrastructure: Google Cloud Services (Artifact Registry, Cloud Functions, Cloud SQL, Cloud VPC, IAM, IAP, Storage, Compute Engine)
Team: 5
Development methodology: GitLab tickets, Kanban
Team leadership and training, project acquisition, Shopware 5 & 6 development
React Native contract development to expand in-house product range
Development of a white-label backend for mobile apps
Planning and budgeting of IT projects

May 2019 - Nov 2020

1 year 7 months

Technical Project Lead

sallys-shop.de & sallys-world.net

Languages: PHP7 (Magento 1.9 & Shopware 5/6)
Infrastructure: on-premises
Team: 3
Development methodology: Scrum (Jira/Confluence)
Opening additional sales channels (Amazon, eBay) and growing customer base
Migrating the existing shop to Shopware, including infrastructure and ERP integration
Migrating the blog into Shopware and providing data for an IoT application

Apr 2019 - Oct 2019

7 months

Backend developer

Cosinex GmbH & Public Plan GmbH

Languages: PHP7 (CakePHP 2), React-JS, Java 8 & Spring Boot, MySQL
Infrastructure: private cloud service
Penetration tests on infrastructure and software
Team: 3
Development methodology: Kanban (Jira/Confluence)
Ensuring usability of the OSIP software by migrating an Oracle database
Consulting and support for developing the client for air and nuclear safety

Mar 2019 - Jul 2021

2 years 5 months

Lead Backend Developer

Personalwerk GmbH / ThyssenKrupp

Languages: PHP7 (Symfony4 Flex), Vue.js, Vuex, Java Spring Boot, MySQL, Redis Server, WSDL/SOAP
Team: 3
Development methodology: Git issues, milestones
Reduced importer runtime by 75% by developing a data miner to fetch and cache multiple REST/SOAP APIs

Mar 2019 - Jun 2019

4 months

Full Stack Developer

Trans Service Team GmbH

Languages: PHP7 (Slim), React-JS, Java 8 & Spring Boot, MySQL
Penetration tests on infrastructure and software
Team: 3
Development methodology: Kanban
Development of various REST APIs with corresponding frontend for internal use
Streamlining business processes, managing transport orders, and reducing idle time in the fleet of a high-bay warehouse

Feb 2019 - Mar 2019

2 months

Software developer

feder-software GmbH

Languages: Java 8 & Spring Boot, MySQL, Icinga2, Bash, Docker
Team: 2
Development methodology: none
Setting up a monitoring system to identify bottlenecks in various hardware and network areas

Feb 2018 - Jun 2019

1 year 5 months

Head of Development

Wircon GmbH

Project planning/conceptualization, project budgeting, leading internal teams of 8 developers, reporting to management
Infrastructure: Google Cloud Services (Cloud Function, Cloud SQL, Cloud VPC, IAM, IAP, Storage, Compute Engine), GitLab CI/CD, GitLab Docker Registry
Penetration tests on infrastructure and software
Languages: PHP7 (Symfony 3.4, ZF3), Node.js, NoSQL/SQL, HTML, CSS, React Native
Team: 8
Development methodology: Kanban (Jira/Confluence)
Development and deployment of various web applications (CRM, marketing tool, and admin interface) including infrastructure planning

Apr 2017 - Jun 2018

1 year 3 months

Senior System Engineer

Ministry Group GmbH

Languages: PHP7 (Symfony 3.4, native), HTML5, JavaScript, CSS3, Bash, shell scripts, SQL, GitLab CI/CD & Jenkins, React Native
Team: 4
Development methodology: Scrum
Development of various WordPress projects (ambassador.xing.com, pc-spende.de) and other web applications
Administration of company network and support for the on-site admin, reporting to management
Penetration tests on web applications
AWS – Lambda testing
Infrastructure: Linux, GitLab, MySQL, MSSQL, Jenkins

Feb 2017 - Mar 2018

1 year 2 months

Android Developer

Deutsche Post AG

Languages: Java, SQL, SQLite, NoSQL, PHP7 (Symfony 3.4)
Team: 1
Development methodology: Git Issues
Development of an Android application with voice control
Infrastructure: Linux, Android 6, SQLite

Jan 2017 - Mar 2017

3 months

Full Stack PHP Lead Developer

KB&B

Languages: HTML5, JavaScript, SQL, PHP7 (native)
Team: 1
Development methodology: Scrum
Development of an in-house framework
Infrastructure: Linux, Apache, MySQL

Jul 2016 - Dec 2016

6 months

PHP Backend Developer

BAKS GmbH

Languages: PHP, XML, JSON, HTML5, CSS
Team: 2
Development and deployment of a backend solution to generate invoices to replace manual creation
Optimized customer management by developing a CRM

Apr 2016 - Mar 2017

1 year

Full stack PHP Lead Developer

Effektor GmbH

Languages: HTML5, CSS, PHP7 (native, WP), SQL
Team: 5
Development methodology: Git Issues
Development and deployment of multiple WordPress sites on behalf of clients
Optimizations in CSS and JavaScript
Infrastructure: Linux, Apache, MySQL

May 2014 - Jun 2016

2 years 2 months

Head of Development & Administration

Perennial AG (Aeroflot)

Consulting and planning the setup of a data center in MSK and LED
Administration, monitoring, and support of OpenStack cloud (14 nodes per cloud) in MSK and LED
Administration, monitoring, and support of in-house servers and 3rd-level support for Aeroflot's e-commerce system
Developing interfaces for data processing
Developing an e-commerce front- & backend for upselling insurance, car rentals, and hotels
Developing and hosting multiple WordPress landing pages including securing them
Languages: PHP (Symfony, ZF1), XML, JSON, HTML5, CSS3, Bash, SQL, GitHub, deploy scripting, Java Selenium tests
Team: 6
Development methodology: Scrum
Infrastructure: Linux, OpenStack, MySQL, Oracle