Freelancer profile translated to English.
Back to original languageAbout Oguzhan
Looking for a Go backend developer to deliver quickly and efficiently? I design APIs, microservices, and containerized distributed systems with Docker and Kubernetes, from MVP to scale-up.
Most projects fall behind because they are over-architected from the start. My approach: deliver simple, deliver fast, then iterate. This is how I deliver a complete backend (70+ endpoints) in 1 month.
For you:
- Your backend holds up : REST APIs in Node.js/Fastify or Go, PostgreSQL, MongoDB, GraphQL. I've run financial flows of tens of millions of euros in fintech and OSINT scraping at thousands of requests/day. When it can't fail, it doesn't.
- A single point of contact, not three : React, Next.js on the web side, React Native on the mobile side, from the API endpoint to the UI component. Less back-and-forth, less friction, more velocity.
- What's coded is deployed : Docker, Kubernetes, AWS, Terraform, GitHub Actions CI/CD. I don't deliver a zip file by email. Code is deployed multiple times a day.
- Architecture follows the need, not the hype : microservices, event sourcing, serverless; each choice is justified by your context and your budget. A well-made monolith is better than a microservices gas factory.
Lately : MVPs delivered from scratch in a few weeks, migration of legacy systems to Go to handle load increases, and backend services in fintech. From early-stage startups to scale-ups.
Have a project to launch or a system to unblock? Let's discuss it.
French
Native or bilingual
English
Native or bilingual
Japanese
Basic
Can work on-site
Paris (up to 30km), Bordeaux (up to 30km), Lille (up to 30km), Nantes (up to 30km), Nice (up to 30km)
Experience
- AVANTI
On Malt
Backend DeveloperENTERTAINMENT AND LEISUREMay 2026 - June 2026 (1 month)Metz, FranceDesign and development of the backend and back-office for a French flea market and garage sale platform: organizers publish their events, visitors search for them.Achievements during the period:- Public API : geolocated search, recurring events (RRULE: exceptions canceled / postponed / added / deleted), BAN geocoding + Google Places fallback, cursor pagination, Stripe-like idempotence.
- Admin Back-office: RBAC, moderation queue, dashboard, account management, responsive UI redesign aligned with the front design system.
- Content moderation : automatic scanners (normalized duplicates + geo, keyword blacklist, Vision image analysis), moderation flags.
- Ops & observability : ops-driven maintenance mode (kill-switch), latency dashboards by flow, alerts, Pino logs forwarding to Sentry.
- Business : promotions (web/print/Google Ads), aggregated reviews & likes, annual renewal campaigns, CMS integration.
Methodology: TDD, code reviews, strict conventions (ESLint, RFC 7807 Problem Details, generated OpenAPI, Bruno API docs). - AVANTIFlea Market Agenda - Backend API (Node.js/TypeScript)ENTERTAINMENT AND LEISUREFebruary 2026 - March 2026 (1 month)Metz, FranceComplete backend API MVPfor a flea market event platform in France, from scratch to production in 1 month.Results:
- Real-time geographic search across all of France (PostGIS, api.gouv.fr + Google Places geocoding)
- Multi-user organization system with roles, permissions, and invitations
- Recurring events with occurrence and exception management
- Full GDPR compliance (anonymization, export, right to be forgotten)
- 70+ OpenAPI documented endpoints, end-to-end tests, GitHub Actions CI/CD
Stack : Node.js, TypeScript, Fastify, Prisma, PostgreSQL, PostGIS, Docker, Prometheus, Grafana - FiptoBackend DeveloperBANKING AND INSURANCEApril 2025 - October 2025 (6 months)Paris, FranceFintech platform managing international transfers of tens of millions of euros.
- Development of Go services to reduce friction on fund movements
- Integration of third-party services for stablecoin payments
- PostgreSQL migrations and deployment of new services via Terraform
Stack : Go, PostgreSQL, AWS, AWS Kinesis, Terraform, microservices, serverless
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Education
- Expert in Information Technology and Information Technology422021Expert en Informatique et Technologies de l'Information