Full-stack developer · AI products · Denizli
I build AI tools for work that has to be right. Legal research and drafting at Ravon today, lending systems at a bank before that.
Full-stack developer working mostly with Python/FastAPI, Next.js and TypeScript, with a Java/Spring Boot background. At Ravon Group I work on Ravon Sage, private AI for law firms that answers with its sources and can run entirely on a firm's own servers. Before that I spent years in fintech, building KYC services and partner integrations at Fibabanka, where reliability mattered more than novelty.
339 contributions on GitHub in the last 3 monthsWork

Ravon Sage Legal
Private AI for law firms · Ravon Group
Legal research, drafting, deadlines and agents in one platform. Every answer shows its source, across 13M+ Turkish court decisions and the firm's own documents, and the whole system can run on the firm's servers or fully offline.

Fibabanka
Retail banking · Instant credit
Instant credit for e-wallets and marketplaces like Trendyol, Hepsiburada and Paycell. KYC microservices, partner APIs, batch reporting and the React front end.

Peeka
iOS app · Future baby generator
A consumer app that takes two photos and generates what a couple's baby might look like. I built the React Native client, the Node.js backend and the image generation pipeline.

Scalable Analyzer
Master's thesis
Built the same system twice, once as a monolith and once as microservices, and measured both under load with Prometheus and JMeter to see where the split pays off and where it only adds cost.
- M
Mirana & Polywhisper
Polymarket trading bots · freelance
Automated trading bots for Polymarket prediction markets, controlled from Telegram. An LLM reads social media to gauge sentiment around a market before the bots act on it.

EatWell2Earn
Telegram mini app on TON
Upload a photo of a meal, get a nutrition score from a vision model, and earn tokens for eating well. Built as a Telegram mini app on the TON blockchain. This was a bootcamp project located in Berlin w3hub.
Experience
In the field4 yrs 8 mos
Jun 2026 – Present5 mos
Full-stack developer at Ravon Group
London, UK
B2B AI products that help organisations find knowledge and automate workflows, including Ravon Sage Legal.
- AI tools that turn internal documents and data into sourced answers, summaries and recommendations
- Knowledge search and workflow automation for teams working through complex information
- Python/FastAPI and Next.js services on Railway and Docker, connecting LLMs to secure enterprise systems
May 2024 – May 20262 yrs 1 mo
Freelance developer
Berlin, DE
AI-driven apps, fintech tools and enterprise web platforms for international clients.
- Mobile apps Peeka and ArmorUp with React Native, Node.js, Firebase and AWS
- Transportation ERP and supply-chain SaaS on Next.js with Spring Boot backends
- Trading bots for Polymarket with Telegram control and LLM-based sentiment analysis
Dec 2022 – Apr 20241 yr 5 mos
Software engineer at Fibabanka
Istanbul
Full-stack on the embedded lending platform used by 50+ partners.
- KYC microservices in Spring Boot and Java EE with Kafka and Redis
- Batch reporting system handling 2K+ daily transactions for partner banks
- React/TypeScript features and client-specific UI
- CI/CD pipelines with Docker
Dec 2021 – Apr 20225 mos
Solution consultant at Turkcell
Istanbul
Ran data operations for Güvende Kal, the Ministry of Health's COVID-19 monitoring app.
- MySQL operations across 50K+ daily records for 10K+ monitored patients
- 24/7 incident handling with zero data loss
Jul 2021 – Oct 20214 mos
Software engineer intern at Turkcell
Istanbul
Internal tools for 250+ employees.
- Car pooling app in .NET/Blazor handling 100+ daily bookings
- Load balancer improvements for internal microservices
Education
Mar 2024 – Feb 2025
MSc Software Engineering at University of Europe for Applied Sciences
Potsdam, DE
Thesis: Scalable Analyzer, monolith vs. microservices under load.
Sep 2016 – Sep 2022
BSc Computer Engineering at Middle East Technical University
Ankara, TR
Senior project: a crawler that scores web page complexity by depth.
Skills
- AI
- LLM integration, RAG, Agents & tool calling, Local models
- Languages
- TypeScript, Python, Java, Go, Rust
- Front end
- React, React Native, Next.js
- Back end
- FastAPI, Node.js, Express, Spring Boot, Kafka
- Data
- PostgreSQL, MySQL, MSSQL, MongoDB, Redis
- Infra
- AWS, GCP, Railway, Docker, Firebase, CI/CD, Linux
GitHub
Contact
Have a role or a project in mind? Send me a message.
berk.limoncu@gmail.com