Freelancer profile translated to English.
Back to original languageAbout Kéviinraj
Developer with over 5 years of experience and expertise in Typescript, Javascript through React and Node.js technologies.
Highly sensitive to performance, maintainability and the quality of the final product.
A good DevOps and Cloud culture, familiar with continuous deployment tools.
Technical stack:
Node / Nest /
React / Jest / TypeScript /
JavaScript / HTML / CSS /
AWS / GCP /
SQL / NoSQL /
GitHub Actions / Docker / Redis /
Clean Architecture / Hexagonal Architecture
English
Fluent
French
Native or bilingual
Can work on-site
Paris (up to 50km), Paris (up to 100km), Lyon (up to 100km), Toulouse (up to 100km)
Experience
- Yum PartyReact / Node.js DeveloperENTERTAINMENT AND LEISUREMarch 2024 - January 2025 (10 months)Development of services for Web3 mini-games on Telegram
- Architecture and development of Telegram bots with Nest.js (backend) and React.js (frontend)
- Implementation of a hexagonal architecture guaranteeing scalability, maintainability and testability of the code
- Development of common libraries and a unified API framework to accelerate the creation of new games
Multi-blockchain payment ecosystem- Native integration of TON, Solana, Ethereum and Telegram Stars cryptocurrencies + proprietary virtual currency system
- Distributed and resilient transactional architecture: asynchronous messaging, automatic retry, real-time monitoring
- End-to-end management of in-game purchases and user reward systems
High-performance cloud infrastructure- Containerized deployment on Google Cloud Run with auto-scaling and high availability
- Data stack: PostgreSQL + Redis/ioredis distributed cache with Redlock locking
- Firebase hosting for Telegram Mini-Apps, secured by Cloudflare (CDN + WAF)
- Automated CI/CD pipelines: unit tests, optimized builds
Security and user management- Secure authentication via Firebase Auth with native Telegram integration
- Session and permission management in the Google Cloud ecosystem
- RLTYReact / Node.js DeveloperSOFTWARE PUBLISHINGMay 2022 - September 2023 (1 year and 4 months)Paris, FranceTypeScript/JavaScript Developer (Node.js with NestJS & React.js)Platform for generating and managing Metaverse virtual events (Web3 Ethereum)
- Design, development and continuous improvement of an on-demand game server deployment solution for virtual events
- Development of a web portal for access to events and associated communities (live demo)
- Creation of an administration platform (back office) for the configuration, deployment and management of virtual events
User authentication and access systems- Implementation of a secure system based on AWS Cognito for managing accounts and access rights
Payment and monetization- Stripe integration for secure payment management, paid/VIP access and microtransactions
In-game and off-game communication features- Development of contact systems, private chats and public chats integrated in and out of the game
Technical environment- Backend: TypeScript, Node.js, NestJS, Docker, Redis, Ethereum Blockchain
- Frontend: React.js
- Cloud & CI/CD: AWS (ECR, Lambda, Cognito, DynamoDB, ACM, S3, ElastiCache Redis, Kinesis, Glue), Stripe integration
- AS MediaReact / Node.js DeveloperENTERTAINMENT AND LEISURENovember 2021 - March 2022 (5 months)Paris, France- Development of a trading bot - Datatrade Solution- Development of a Back-Office for bot administration- Development of a Google Chrome extension for simplified bot management- Implementation of a CI/CD with Google Cloud Build, Github, full serverless solution
Reviews
Ronan
Pylote
Reviewed on 10/10/2022
Work of exceptional professionalism and speed.
J
Jerome
RLTY
Reviewed on 6/7/2022
A pleasant and very effective collaboration. Highly recommended!
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Education
- Master II: Expert in computer engineering and information systemsESGI2020
- Bachelor STS, General Computer ScienceEcole Le Rebours2017