Niklas Witzel
IT Consultant
Experience
AI Engineer, Cloud Solution Architect, Backend Developer
AI Product Photography Solution
- Generate hyperrealistic synthetic product photos in sceneries defined by user inputs
AI Engineer, Cloud Solution Architect, Backend Developer
AI Recruiting Solution
- Select suitable candidates based on project descriptions (Candidate Matching)
AI Engineer, Business Analyst, Project Manager
LLM-guided Reference Letter Creation
- Introduce GenAI-powered solution for the creation of employee reference letters
- Introduce RAG-powered HR Support Chatbot
IT Consultant
Tensora GmbH
- Crafting cloud solutions with modern design principles
- Designing scalable systems using cutting-edge AI technologies
- Assessing client needs and providing expert technology recommendations
AI Engineer, Cloud Solution Architect, Backend Developer
AI Writing Assistant
- Conceptualization
- Architecture consultation
- Fullstack Software Development
- Prompt Engineering
- Azure DevOps
Lead Cloud Solution Architect, Fullstack Developer, DevOps
Cloud Transformation & Document Management
- Structured architecture analysis of the status quo
- Identification of risks and potentials
- Development of a target architecture and detailed planning of the transformation process under consideration of complex system requirements
- General cloud consulting and training
Lead Cloud Solution Architect, Fullstack Developer, DevOps
Microservices & Document Management
- Design and detailed planning of the AWS-based native cloud architecture
- Technical coordination of development phases
- Test management
- Implementation of a Spring Boot REST API
- Implementation of AWS Lambda functions based on Java
IT Consultant
cimt ag
- Process Automation of complex business processes
- Engineering of Cloud Microservices
- Cloud Transformation
- Assessing client needs and providing expert technology recommendations
- Internal consulting on generative AI technology and potentials
Cloud Solution Architect, Fullstack Developer
Business Process Automation
- Support for business and technical modeling of business processes using BPMN and DMN
- Automation of business processes using Camunda embedded in a Spring Boot / Java project
- Planning and implementation of interfaces and backend processes in the AWS cloud (SNS/SQS)
- Implementation of an own Camunda frontend based on mockups with Vue.js and GraphQL
- Infrastructure as Code (IaC) with Terraform
- Technical coordination of development phases
- Test management
Founder
Niklas Witzel Software Development
- Freelancing
- Web & App Development
- Cloud Development
- Programming Coach and Lecturer
Fullstack Developer
Cloud-based web crawling and analytics
- Planned and implemented automatic crawling of an ecommerce web shop
- Planned and implemented further analytics of the crawling results
Data Scientist
Diverse Data Science Projects
- Marketing-Mix-Modeling
- Recommendation Engine
- A/B Testing
App Developer
Android Shopping App
- Further development of the company's Android native shopping app
- Planning, design and implementation of new features
Fullstack Developer
Internal Reporting System
- Further development of the company's internal reporting system
- Planning, design and implementation of new features
Software Developer
bonprix Handelsgesellschaft mbH
- Academic studies & working in applied informatics
- Web & App Development
- Cloud Development
- Data Science
- SEO, SEA and SEM activities
Fullstack Developer
Internal Purchasing Systems
- Further development of the company's internal purchasing systems
- Planning, design and implementation of new features
Fullstack Developer
Diverse Web-Development Projects
- Planning, design and implementation of diverse corporate websites utilizing Joomla CMS system
- Development of responsive templates for Joomla CMS system
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (8 years), Retail (3.5 years), Fashion (3.5 years), Education (1 year), and Professional Services (1 year).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (9.5 years), Product Development (5 years), Business Intelligence (3.5 years), Marketing (3.5 years), Project Management (2 years), and Human Resources (1.5 years).
Skills
Cloud Solution Architecture & Development (Aws, Gcp, Azure)
Front- & Backend Development
Devops
Data Science
Large Language Models
Process Automation
Web Development
Generative Ai
Artificial Intelligence
Business Analysis
App Development
Programming Languages: Java, Python, Kotlin, Javascript, Typescript, (No)sql, Html, Css, C#, Php
Operating Systems: Linux, Windows, Macos
Project Management: Scrum, Kanban, Jira, Confluence
Document Management: Ser Doxis Suite
Solution Architecture: Microservice Architecture, Soap, Three-layer Web Architecture, Monolithic Architecture, Event-driven Architecture, Container-based Architecture
Service Communication: Synchronous (Rest Api, Graphql, Websocket), Asynchronous (Kafka, Rabbitmq, Mqtt, Sns / Sqs, Pubsub, Servicebus)
Process Automation: Bpmn & Dmn, Camunda 7 / 8 Framework
Cloud Platforms: Aws, Azure, Gcp
Cloud Development (Aws): Ec2, Ecs, Eks, S3, Lambda, Api Gateway, Rds, Dynamodb, Iam, Cloudwatch, Cloudtrail, Xray, Route53, Ses, Vpc
Cloud Development (Azure): Ais, Data Factory, Logic Apps, Function Apps, Api Management, Eventgrid, Eventhub, Servicebus, Landing Zones, Iam, App Service, Azure Ai Services, Role Based Access Control (Rbac, Graph Api)
Cloud Development (Gcp): Kubernetes Engine, Compute Engine, Cloud Functions, Iam, Cloud Storage, Bigtable, Bigquery, Analytics, Vpc
App Development: Android Framework, Jetpack Compose, React Native
Web Development: Angular, Vaadin, React, Thymeleaf, Streamlit, Spring Framework, Nodejs, Fastapi, Velocity, Spring Boot, Nextjs, Joomla, Wordpress
Devops / Dev Tooling: Terraform, Cloudformation, Github, Gitlab, Bitbucket, Docker, Kubernetes, Ci/cd, Intellij, Visual Studio Code, Android Studio, Eclipse, Webstorm, Phpstorm, Jupyter Notebooks, Google Colab, Huggingface, Load Balancing
Databases: Postgresql, Mariadb, Mysql, Mongodb, Qdrant, Oracledb, Redis, Elasticsearch, Teradata, Apache Flink, Apache Spark
Observability: Logstash, Kibana, Splunk, Grafana, Prometheus
Generative Ai: Large Language Models, Openai Gpt, Google Gemini, Anthropic Claude, Mistral, Langchain, Github Copilot, Midjourney, Dall-e, Retrieval Augmented Generation (Rag)
Data Science: Numpy, Pandas, Matplotlib, Scipy, Scikit-learn, Keras, Pytorch, Tensorflow, Seaborn, Statsmodels, Opencv, Yolo
Languages
Education
NORDAKADEMIE Graduate School Hamburg
Master of Science, Applied Data Science · Applied Data Science · Hamburg, Germany
NORDAKADEMIE Elmshorn
Bachelor of Science, Applied Information Technology · Applied Information Technology · Elmshorn, Germany
Konrad Zuse Schule Hünfeld
Technical Baccalaureate, Information Technology · Information Technology · Hünfeld, Germany
Profile
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