I design and build secure and scalable backend systems and REST APIs using 
Python (FastAPI) and 
Node.js (Express, NestJS), with experience across the full web stack.
I am currently focused on authentication systems, payment integrations (
Stripe / 
Flutterwave), marketplaces and 
Shopify app integrations, while also building frontends with React / Next.js and Vue.js.
I also enjoy game development with Unreal Engine 5 as a secondary focus.
Originally from 
Benin in West Africa, I currently live in Abomey-Calavi and work as a backend engineer with a strong JavaScript background, oriented towards API design and backend architecture.
A Shopify app built to help merchants manage return requests from a dedicated customer flow, keeping exchanges, refunds, and follow-up actions easier to track.
Created independently — product, app flow, backend & frontend.
Create branded QR codes for products, campaigns and store pages. Track scans in real time with analytics and historical reports. Organize all QR codes from a single dashboard and export scan data for performance review.
Created independently — product design, backend & frontend.
A selection of freelance missions delivered under NDA — primarily on Fiverr and through direct contracts, mostly for French-speaking clients and international companies. I cannot share client names, links or product screens, but I can describe the technical scope and responsibilities I handled on each project.
Integrated a complete Stripe payment system for a French fintech client's SaaS platform. The project covered subscription plans, webhook handling for real-time payment events, and secure checkout flows compliant with European regulations.
Built a full-stack e-commerce platform for a French retail brand — product catalog, cart and checkout powered by Stripe, order management dashboard, and a responsive storefront optimized for mobile buyers.
Finalized and improved a web and mobile platform where service providers create offers and customers find nearby professionals. Handled feature completion, UI polish and production bug fixes.
Developed a custom SaaS tool for a French construction company to manage project quotes, track subcontractor work orders, and generate client-facing PDF reports. Included role-based access for project managers and site supervisors.
Built an online appointment booking system for a French medical cabinet. Patients can browse practitioners, select time slots and receive automated email and SMS reminders. The admin panel handles schedule management and patient records.
Built backend services for a client product with secure REST API flows, payment integration and reliable transaction handling. Delivered production-ready infrastructure with CI/CD pipeline configuration.
Marketplace API
Role-based authentication (OAuth2, JWT), PostgreSQL, transaction system and Dockerized environment.
Payment API
Stripe & Flutterwave integrations, secure payment flows and webhook handling for payment events.
Authentication System
OAuth2 GitHub login, JWT token management, role-based access control and protected routes.
Python REST API – FastAPI
CRUD operations, JWT authentication, PostgreSQL, Docker and Swagger/OpenAPI documentation.
Experience
Vertim Coders
Backend Developer – Shopify apps & API integrations
May 2025 – Now
Malaika Games
Game Dev Intern
2019 & 2024
Seme City
Web Dev Intern – Chatbot & backend
Jul – Oct 2020
Nexapay
Founder & Full-Stack Developer
2024
TrackQR
Solo Dev – QR tracking & analytics
2025
Trackback
Solo Dev – Returns management
2025
Fintech – Stripe integration
NDAPayment flows, SCA/3DS compliance
Fiverr · FR
E-commerce platform
NDAFull-stack storefront, cart & checkout
Fiverr · FR
Construction SaaS
NDAQuotes, work orders, PDF export
Fiverr · FR
Healthcare booking
NDAAppointments, SMS/email reminders
Fiverr · FR
REST API & backend
NDAAuth, payment, Docker & CI/CD
Upwork · INT
Python FastAPI and Node.js Express · NestJS for REST APIs, with OAuth2 & JWT, Stripe · Flutterwave payments and PostgreSQL.
Next.js / React, Vue.js and TailwindCSS for building modern frontends on top of my APIs.
Unreal Engine 5 for gameplay experiences and prototypes. Git & GitHub with GitHub Actions.
Open to backend engineering roles, freelance missions and collaborations.
