Freelancer profile translated to English.
Back to original languageAbout Oliwer
Do you have a complex web project? A SaaS to migrate? Infrastructure to modernize? I am a full stack & DevOps developer with proven experience in technical architecture, transforming your challenges into concrete solutions.
As Tech Lead at Cash Flow Positif, I led the technical strategy for a team and delivered a real estate platform managing over 1,000 properties in production. I don't just code; I think about architecture, scalability, and maintainability from the start.
I bring you:
- Solid architecture: full stack design built to scale painlessly
- Modern infrastructure: Docker, Kubernetes k3s, CI/CD GitHub Actions (deploy with confidence)
- Rare expertise: full stack AND DevOps (React + backend + ops in one package)
- Reliable deliveries: I migrated a large SaaS from Angular to React, optimizing UX, performance, and maintainability
Do you have an ambitious web project? Let's talk.
Polish
Native or bilingual
English
Fluent
Spanish
Conversational
Can work on-site
Évreux (up to 50km)
Experience
- Cash Flow PositifTech Lead, Full Stack Developer, DevOpsREAL ESTATESeptember 2024 - Today (1 year and 11 months)Montrouge, France– Design & lead the company's technical strategy enabling the development of React & Fastify applications.– Contribution to the development of a real estate management platform covering over 1000 properties (React, Symfony, Docker, MySQL).– Development of an application for tracking key performance indicators (KPIs) and employee presence (React, Symfony, MySQL).– Lead on the development of a web solution for wealth management and investment support (React, Fastify, PostgreSQL, Docker).
- A Chord Group (Anciennement IMGT Group)Full Stack DeveloperCONSULTING AND AUDITSJuly 2023 - September 2024 (1 year and 2 months)Paris, France– Migration of a SaaS solution from Angular to React to optimize the user interface, code maintainability, and performance.– Participation in the development of functional modules within the new architecture and the creation of NPM/PNPM packages (React, NestJS, PostgreSQL).– Development of an Electron application dedicated to versioning npm packages on the company's private network (Electron, Node.js).
- KREIOFreelanceTECHMay 2026 - Today (3 months)Évreux, France– Creation and deployment of a lead generation platform with workflow automation (Next.js, PostgreSQL, Docker, Tiptap, Resend, SheetJS).– Design of technical architecture and management of full stack web projects for various clients, covering frontend, backend, and DevOps infrastructure (React, Next.js, NestJS, Fastify, PostgreSQL, Docker).– Development of a CV optimization SaaS with payment management, authentication, and Kubernetes deployment (React, NestJS, Prisma, Stripe, k3s).– Complete management of infrastructure and CI/CD, including Docker setup, Kubernetes k3s, monitoring, and deployment via GitHub Actions with self-hosted runners.
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Education
- Master's in Big Data Artificial IntelligenceIPSSI Paris2026Mastère Big Data Intelligence Artificielle
- Bachelor's in Full Stack Web DevelopmentIPSSI Paris2024Bachelor Développement Web Full Stack