Naz Çolak

Naz Çolak

Full Stack Engineer

Based in Berlin, Germany, I build end-to-end scalable web and mobile applications, combining backend engineering principles with a passion for crafting user-friendly frontend and mobile experiences.

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About Me

I am a Master's student in Applied Computer Science at Georg-August-Universität Göttingen, with a BSc in Computer Science from Eötvös Loránd University in Budapest. Currently working as Lead Backend Engineer at Diva, building an open-source AI-powered chatbot platform with React and Python, leveraging RAG and HPC infrastructure (GWDG, KISSKI) to serve specialized assistance for labor representatives. My goal is to combine my background in software development with emerging AI technologies. You can download my CV from here.

Technologies I've been working with:

RAGAgentic OrchestrationMulti-Model OrchestrationPrompt EngineeringLLM IntegrationPythonFastAPIJavaMicroservices ArchitectureEvent-Driven SystemsReactJavaScriptTypeScriptNext.jsHTML/CSSNative Mobile DevelopmentKubernetesDockerHPC InfrastructureCI/CDAzure CloudServiceNowAgile/ScrumGit

Experiences

Lead Backend Engineer @ DIVA

JUL 2025 - PRESENT
  • Developed an open-source, AI-powered chatbot platform (DIVA) using React and Python, leveraging HPC infrastructure (GWDG, KISSKI) to provide specialized assistance for labor representatives.
  • Engineered a RAG-based retrieval system integrating curated legal and union datasets (BetrVG, Bund-Verlag) to ensure accurate, verifiable, and source-backed responses for complex legal inquiries.
  • Architected a specialized backend serving several distinct LLM configurations (e.g., GPT-OSS-120B, Qwen3.6-35B) optimized for different tasks.

Co-Founder @ Was2Eat

JAN 2025 - DEC 2025
  • Architected and developed the scalable backend for real-time food intelligence, implementing data pipelines to analyze complex ingredient, allergen, and nutritional datasets.
  • Led the full-stack development of the Was2Eat mobile application, integrating a smart AI chatbot that provides personalized, real-time guidance on dietary needs and nutritional profiles.

OutSystems & Web Developer @ ExxonMobil

OCT 2023 - SEP 2024
  • Lead the development of an internal product using the OutSystems platform.
  • Integrated emerging business requirements to optimize product functionality.
  • Actively engaged with end-users to collate feedback, driving continuous product improvements based on their insights.
  • Strategically planned and prioritized product releases to align with organizational goals and user demands.
  • Building Web Applications using HTML, CSS and JavaScript.

Enterprise Content Management Analyst @ ExxonMobil

JUN 2022 - OCT 2023
  • Acquired hands-on experience managing vast amounts of data.
  • Deepened knowledge in server-side operations and functionalities.
  • Oversaw server monitoring and maintenance to guarantee peak performance.
  • Leveraged development expertise to craft an automation tool, enhancing server monitoring efficiency by 80%.
  • Worked as a ServiceNow Developer, usage of ServiceNow ticketing system on a daily basis.

Education

University of Göttingen

OCT 2024 - PRESENT

Applied Computer Science, Master of Science

Eötvös Loránd University

SEP 2020 - JUL 2024

Computer Science, Bachelor of Science

Projects

PixelRatings

React NativeFirebase

A Game Rating Mobile Application.

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Tatooine

JavaScript

Spearheaded the design and development of a 2D real-time city builder game along the lines of the classic SimCity, as part of a collaborative team effort.

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Was2Eat

React NativePython

Was2Eat is a nutrition analysis app that enhances the user experience through AI-powered technologies. It combines a React Native frontend with a Dockerized Python FastAPI backend on DigitalOcean, leveraging Supabase for data storage and an AI model for tailored food recommendations.

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