Freelancer profile translated to English.
Back to original languageAbout Danyl
Need to modernize your legacy platform, architect a scalable system, or integrate generative AI? I intervene to:
✓ Design microservices architectures
✓ Migrate to AWS cloud (-40% costs)
✓ Integrate generative AI (RAG, autonomous agents, LLMs)
✓ Optimize web performance (100% Lighthouse)
✓ Coach technical teams and industrialize DevOps
🚀 ADDED VALUE
10+ years with Orange, BNP Paribas, CANAL+, Monoprix, Shippeo, Shadow, Cisco.
My differentiator: agentic engineering approaches (AI agents to automate code review, testing, documentation) → +40% team velocity, -30% code churn.
Expert in Clean Architecture, DDD, Event-Driven. I guarantee quality, performance, and security.
💼 PROJECTS & DELIVERABLES
Architecture & Cloud
• Microservices architectures (Clean Architecture, DDD, CQRS, Event Sourcing)
• Legacy migration → AWS Serverless
• Infrastructure as Code (Terraform)
• Technical audit and technical debt refactoring
Generative AI & Agentic
• Production RAG integration
• Multi-agent systems (MCP, workflow orchestration)
• ML/NLP pipelines (sentiment analysis, semantic search, embeddings)
• Vector Databases (pgvector), LLMs
Full Stack Development
• Backend: Go, Node.js, NestJS | REST, GraphQL, gRPC | PostgreSQL, MongoDB, Redis
• Frontend: TypeScript, React/Next.js, Vue.js/Nuxt.js, Angular
• Mobile: React Native, Kotlin, Swift
DevOps & Monitoring
• CI/CD (GitLab CI, GitHub Actions), Docker, Kubernetes
• Monitoring (Datadog, Grafana, Prometheus, Kibana)
• Performance optimization, load testing
Technical Leadership
• Management of 5-15 devs (recruitment, mentoring, code review)
• Technical roadmap, estimations, Agile/Scrum
• Governance (standards, design reviews)
Stack: Go • Node.js • TypeScript • React • Vue.js • AWS • Azure OpenAI • RAG • PostgreSQL • MongoDB • Docker • Kubernetes
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Marseille (up to 50km), Toulouse (up to 50km), Bordeaux (up to 50km)
Experience
- CHANEL SAS - GDS Chanel.comTech Lead/FullStack ArchitectLUXURY GOODSMarch 2025 - Today (1 year and 5 months)Neuilly-sur-Seine, FranceCurrently on assignment at Chanel, I am leading the critical transition from a legacy Hybris/OCC architecture to a modern Headless stack (React, Next.js, Fastify for BFF).In a complex organizational and political context, I act as the guarantor of the long-term technical vision and software quality. My mission is structured around three pillars:1. Architecture & Technical Strategy:
- Design and refactoring of critical modules
- Constant trade-offs between short-term delivery imperatives (UI revamps, third-party SDK integrations) and long-term maintainability.
- Facilitating "Tech Authority" sessions to validate implementation choices and anticipate technical dependencies (authentication, providers, security).
2. Team Leadership & Management (Onshore/Offshore):- Managing a team of 10 to 15 developers (France and India), including junior and senior profiles.
- Uniting the team around best practices for excellent engineering: demanding code reviews (PRs), implementing architectural guidelines, and pair programming sessions.
- Supporting the transition to a full-stack model (skill development on BFF) while protecting team velocity against planning pressures.
3. Innovation & Performance Expertise:- Optimization of web performance (TTFB, Speed Index, Lighthouse 100%) and implementation of advanced architectures including Generative AI (RAG, MCP protocols).
- Constant interface with business experts (SEO, accessibility, performance, analytics) to transform product needs into robust technical solutions.
- ORANGETech Lead/Architect Orange TV / OCSFILM AND AVAugust 2023 - February 2025 (1 year and 6 months)Châtillon, FranceAs a Fullstack Tech Lead, I am architecting a next-generation media platform in Go — high-concurrency microservices, multi-screen streaming, and integration of generative AI components (RAG, MCP, embeddings) for metadata enrichment and intelligent user feedback analysis.Backend Development- Core platform in Go (scalability, high concurrency, multi-device)- Robust microservices architectures, AWS serverless pipelines (Lambda, SQS, S3)- High-performance APIs (Go, NodeJS) with MongoDB, Postgres, Redis- Metadata enrichment pipeline: sentiment analysis (Azure OpenAI), toxicity scoring (Detoxify), keyword extraction, vector embeddings (pgvector)- Multi-criteria feedback scoring: sentiment, engagement, relevance, credibility — prioritization of actionable feedback- Semantic search: thematic clustering and similarity-based queries on user feedback- Search/recommendation engines; monitoring (Datadog, Kibana, Grafana)- Real-time alerting: Metabase dashboards + Slack notifications for editorial/moderation teamsFrontend Development- Multi-platform interfaces:- Mobile: React Native, Kotlin, Swift.- Smart TV & STB: Optimized interfaces.- Web: Solutions with NextJS and NuxtJS- UX/UI collaboration via Figma for intuitive experiences.Cross-functional Responsibilities- Definition of the technical roadmap.- Development of internal tools (microservices, scripts).Technologies- Backend: Go, NodeJS, MongoDB, Postgres, pgvector, Redis, AWS Lambda- AI: Azure OpenAI, Detoxify, RAG, embeddings, MCP- Frontend: NextJS, VueJS, React Native, Kotlin, Swift- Monitoring: Datadog, Kibana, Grafana, Metabase
- LazoTech Lead MobileSOCIAL NETWORKSJuly 2023 - December 2023 (5 months)Paris, France- Overseeing the development of a mobile application.- Collaborating with Lazo teams to build the roadmap and recruit.- Ensuring the technical solution is well-designed, maintainable, and scalable.Technical environment: React Native, NextJS, Expo Web, Expo EAS
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Education
- Bachelor of Technology (B.Tech.)ENSI2010