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Valentin FlageulVF

Valentin Flageul

Software Engineer

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

About Valentin

🚀 Software Engineer (Backend & DevOps)

Languages: TypeScript (Advanced)

👨‍💻 Backend expertise: Node.js, NestJS, distributed systems, system design, clean architecture
⚙️ DevOps: AWS, Docker, Kubernetes, CI/CD, observability
🎨 Frontend: React, Tailwind, Shadcn UI

Looking for a reliable, autonomous, and product-oriented software engineer to move fast without compromising quality?
I help teams build, stabilize, and ship production-ready applications, whether it’s a new product, a technical revamp, or process automation.

💼 What I can help you with:

Robust backend development (NestJS / Node.js / PostgreSQL)

Design and implementation of scalable REST & GraphQL APIs

Infrastructure & DevOps: Dockerization, Kubernetes, CI/CD pipelines, monitoring & observability

Modern frontend development (React, Tailwind, Shadcn): dashboards, admin panels, internal tools

Code audits, technical migrations, and refactoring of existing systems

Performance optimization & scalability improvements

I’m comfortable working independently or within existing teams, and I focus on clean architecture, maintainability, and real product impact.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 10km)

Experience

  • Spendesk
    Software Engineer
    BANKING AND INSURANCE
    November 2025 - Today (7 months)
    Paris, France
    Part of the Payments group within Spendesk Financial Services, working in the KYC Squad, responsible for customer onboarding and regulatory compliance.

    I contribute to the design, development, and maintenance of backend systems critical to user onboarding, ensuring a smooth customer experience while meeting strict financial and regulatory requirements.
    Clean Architecture Microservices Node.js Jest Typescript
  • Sia Partners
    Software Engineer
    SOFTWARE PUBLISHING
    February 2023 - October 2025 (2 years and 8 months)
    Paris, France
    Developer on Stratumn, a B2B SaaS platform enabling business process modeling and traceability using blockchain technology.
    • Designed and deployed a high-throughput job scheduling system, capable of processing 10,000+ jobs per minute in production, using advanced techniques such as optimistic locking and vertical partitioning.

    • Built a scalable ingestion pipeline (AWS SQS + Lambda) handling millions of requests per month with high reliability and low latency.
    • Implemented a new ReBAC authorization system and secured 30+ microservice endpoints, improving access control and security.

    • Developed a no-code platform with AgGrid enabling customers to build and manage workflows autonomously, reducing developer support needs.

    Core skills: TypeScript, backend development, system design, Terraform, AWS, Kubernetes.
    A bit of frontend development.
    Typescript BullMQ NestJs Node.js React.js

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Education

  • Master's Degree in
    Polytech Montpellier
    2023
    Master's degree in Computer Science

Certifications

Skill set

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