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Noémie Sainte-MarieNS

Noémie Sainte-Marie

Lead Fullstack Developer | Next.js • NestJs

€550/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Noémie

TypeScript Fullstack Developer

Before coding, I worked in the operations of a tech startup. This detour gave me something that training alone doesn't teach:understanding a business needbefore opening an editor.

Fullstack developer and lead dev for 4 years, I have drivenarchitecture, quality, and team skill developmentalongside delivery. Among my recent achievements: the design of an internal AI platform integrating a multi-agent system, from end to end.

What I bring to a mission: **autonomy**, **fast integration**, and the ability to ask time-saving questions.

[Main Stack: Next.js, Node.js, NestJS, MongoDB, ElasticSearch, Redis, TypeScript]

🔗 noemiesaintemarie.com
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • UPTOO
    Lead Developer | Stack Manager
    HUMAN RESOURCES
    September 2022 - December 2025 (3 years and 3 months)
    Paris, France
    At Uptoo, a recruitment firm specializing in sales profiles, I led the technical transformation, with 10 years of product history to modernize.

    🔹 Architecture and Stack Transformation:

    • Migration from an Express monolith to a modular architecture in NestJS (TS) + DDD, structured in Turborepo
    • Transition from Kubernetes infrastructure to GCP Cloud Run (serverless)
    • Frontend refactoring to Next.js AppRouter with the implementation of a shared Design System

    🔹 Product Design & Development:

    • Participation in the functional and technical design of tools used by internal teams, clients, and partners
    • Design and development of an AI automation platform for the internal processes of recruiters and sales representatives
    • Development and support of teams on new features from A to Z (scoping → architecture → implementation → deployment)
    • Refactoring and continuous improvement of existing tools

    🔹 Technical Leadership:

    • Technical supervision of the team (code reviews, standards, documentation)
    • Facilitation of DDD workshops
    • Structuring of backend / frontend best practices
    • Participation in the implementation of agile processes

    🔹 Main Stack:

    Next.js, Node.js, NestJS, MongoDB, ElasticSearch, Redis, TypeScript, GCP, AI SDK
    Next.js NestJs TypeScript Domain Driven Design Tech Lead
  • Gabriel Field
    Web Developer - Migration from WordPress to a Static Site
    CULTURE
    February 2026 - February 2026
    Gabriel Field, a musician composer, had a generic WordPress site, burdened by a rarely used shop, which diverted attention from the essential: his music.

    The goal was to start from scratch to create a showcase that truly speaks about him — a space where his universe is felt from the first visit, even before listening to a note.

    🔹 The Approach:

    • Next.js static architecture for high performance (loading < 1s)
    • Immersive and responsive design with subtle animations, true to the client's artistic universe
    • Strategic simplification: removal of the unused shop, refocus on music and projects
    • Bilingual version (FR/EN) and contact form to reach an international audience
    • Client support on content structuring

    🔹 The Results:

    • Loading < 1s on most pages
    • Maintenance costs divided by 4 (end of dependency on WordPress plugins)
    • Improved SEO thanks to the optimized static structure

    🔹 Main Stack:

    NextJs, TailwindCss, TypeScript,
    Next.js User Experience Design TypeScript Figma Understanding Needs

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Education

  • Web & Mobile Application Designer Developer - RNCP level 6
    La Capsule
    2022
  • Master 2 - Management and Decisions / Supply Chain / Strategy and Consulting
    Toulouse Business School
    2020
    Master 2 en Stratégie et Conseil : • Performance financière et stratégique • F&A – Internationalisation • Conseil – Lean, change & project management • Analyse et gestion du risque • Management de la technologie et de l’information Master 1 en Management et Décisions option Supply Chain : • Achats – Big Data & Décisions • Demand Chain Management • Sales Forecasting, Pricing & YieldManagement • Supply Chain Management & SAP / VBA (Excel)

Skill set

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