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Oguzhan Yagci

@oyagci

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Backend engineer specializing in distributed systems, shipping production Go services end-to-end.

France

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What I'm looking for

I’m looking for a remote, ownership-focused team building production distributed systems in Go—APIs, async workflows, and performance—where I can ship end-to-end and collaborate daily in English.

I’m a backend engineer with 5 years of experience, mostly in Go on distributed systems across regulated fintech and OSINT environments.

Delivery- and ownership-oriented, I’m comfortable shipping a production backend end-to-end alone, demonstrated through a recent freelance mission for a national platform with geospatial search, auth, webhooks, and full VPS CI/CD.

I also enjoy the low-level side—C/C++ for strong intuition around performance and memory management—while collaborating daily in English in fully remote settings for 4 years.

Experience

Work history, roles, and key accomplishments

Freelance Backend Engineer

L’Agenda des Brocantes

Feb 2026 - Mar 2026 (1 month)

Built the backend for a national French flea-market platform serving 30k events and 40k organizers, delivering public/admin APIs, auth, search, and organization management. Implemented geospatial search with PostGIS, JWT + Argon2id auth with webhooks, automated E2E tests, and production deployment with Docker, Nginx, secrets encryption, and GitHub Actions CI/CD.

Fastify TypeScript PostGIS JWT Argon2id Docker Nginx

Backend Engineer (Fintech)

Fipto

Mar 2025 - Oct 2025 (7 months)

Integrated Circle API to enable fiat ↔ stablecoin conversion (USDC/EURC) for a regulated fintech processing $1–10M/month in asset transfers. Optimized PostgreSQL queries and improved API pagination while contributing to a 10+ microservice ecosystem.

Go PostgreSQL REST APIs API Pagination Microservices Cross Border Payments

Backend Engineer (OSINT)

Owlint

Jun 2023 - Mar 2025 (1 year 9 months)

Built Temporal.io workflows to orchestrate scraping and data collection for an OSINT platform indexing millions of records. Contributed to an event-driven architecture using CQRS/DDD, and integrated Pipl as a new data source by building scrapers and data pipelines.

Go Python Temporal.io CQRS DDD MongoDB gRPC Event Driven Architecture Pipl API

Developer (VR Simulation)

LS Group

Jan 2021 - May 2023 (2 years 4 months)

Contributed to an industrial VR training simulation by implementing VR interaction systems within a production Unity/C# framework. Built editor tooling and an asset pipeline to support the core production team.

Unity C Editor Tooling

Education

Degrees, certifications, and relevant coursework

42 Paris

Level 21 Common Core, Systems Programming and Security

2016 - 2021

Activities and societies: Notable projects: 21sh/42sh (POSIX shell, C lexer/parser), GameBoy emulator (C++), ft_ping (ICMP), exploit challenges (buffer overflows, format strings).

Completed Level 21 Common Core with a specialization in systems programming and security. Worked on projects including 21sh/42sh (C lexer/parser), a GameBoy emulator (C++), ft_ping (ICMP), and exploit challenges focused on memory and vulnerability fundamentals.