Freelancer profile translated to English.
Back to original languageAbout Nathan
Your TypeScript product is growing, but the technical foundation is starting to slow the team down: technical debt on the front-end, fragile NestJS architecture, AI workflows still in prototype stage, delivery too dependent on a few individuals.
I step in as an Angular/NestJS architect and hands-on tech lead to help founders, CTOs, and product teams stabilize their platform, clarify technical choices, and regain speed in delivery.
What I can bring concretely:
- Audit and refactoring of Angular, Node.js, NestJS, and TypeScript applications
- Maintainable front-end architecture: Signals, RxJS, state management, API contracts, separation of responsibilities
- Modular backend: NestJS, GraphQL, MongoDB/PostgreSQL, tests, technical documentation
- SaaS, Ionic mobile, and offline-first applications that perform in production
- Usable AI workflows and automation, not just demos
- Team standards: code review, CI/CD, Docker/Kubernetes, ownership, mentoring
Recent proof points:
- Hime: CTO/Tech Lead of an AI recruitment SaaS platform, budget €216k, Angular, NestJS, MongoDB Atlas, GraphQL, GCP, Docker/Kubernetes architecture.
- Singgah: Ionic/Angular mobile app for audio guides in Bali, vector maps, geolocation, local cache, and offline usage.
- Adventiel / Innoval360: led a front-end team of 4 developers on an offline-first CRM, refactored synchronization flows, TypeScript/RxJS standards, and Kubernetes delivery.
- OTWLD: founder of a senior technical studio that transforms product ambiguity into architecture, code, and delivery systems.
I don't just add features. My role is to make your product more robust, your team more autonomous, and your technical decisions easier to make.
English
Native or bilingual
French
Native or bilingual
Remote only
Primarily works remotely
Experience
- MidGardTech Lead - FireGard & SitGardSOFTWARE PUBLISHINGJanuary 2025 - April 2026 (1 year and 3 months)Bali, IndonésieMission: strengthen the Angular/NestJS systems behind FireGard and SitGard, MidGard's products dedicated to AI, decision support, and crisis management for natural and technological risks.Key achievements:- FireGard: contribution to early wildfire detection workflows, with alert management, certainty rates, camera-based verification, GIS/mapping localization, and operational interfaces designed to reduce false alarms and speed up intervention.- SitGard: contribution to intervention support workflows, with real-time visualization of drone/video feeds, secure media sharing, integrated mapping, and field coordination tools based on situation data.- Progressive refactoring of Angular, NestJS, and TypeScript modules to clarify API boundaries, data access, product logic, and presentation within sensitive business workflows.- Translation of AI, video, mapping, and field requirements into maintainable product flows, considering reliability, GDPR/data security constraints, UX, and remote delivery.- Senior review on technical debt, scalable architecture, delivery sequencing, and distributed team standards.Result: more readable, more maintainable FireGard/SitGard workflows, better aligned with the needs of firefighters, civil security teams, and crisis management stakeholders.
- SinggahTech Lead - Offline Audio-Guide AppTRAVEL AND TOURISMJune 2024 - December 2024 (6 months)Denpasar, IndonesiaMission: build the technical foundation for an audio-guide mobile app for Bali, usable by travelers on the go, with limited connectivity and controlled mapping costs.Key achievements:- Ionic/Angular/Tailwind development of a lightweight mobile interface, designed for field use.- Replacement of Google Maps with vector maps to reduce recurring costs and enable offline access.- Integration of geolocation and automatic triggering of audio content near points of interest.- Implementation of local cache, offline assets, and analytics to prepare for expansion to new tours, languages, and locations.Deliverable: extensible mobile architecture, user journeys, offline logic, map/audio integration, and a maintainable technical foundation.
- HimeCTO / Tech Lead - AI Recruitment SaaSHUMAN RESOURCESMarch 2023 - March 2024 (1 year)Dubai, United Arab EmiratesMission: transform an AI-augmented video recruitment concept into a usable SaaS platform for recruiters and HR teams.Key achievements:- Angular, NestJS, MongoDB Atlas, and GraphQL architecture to manage applications, videos, analyses, and review workflows.- Design of recruiter journeys centered on business decisions: candidate context, video review, analysis signals, and team tracking.- Integration of AI workflows with LangChain.js, ChatGPT, and Ollama to analyze speech, posture, and emotions without masking model limitations.- Implementation of Docker, GCP, Kubernetes, and CI/CD to prepare for scaling and operation.- Coordination of developers, data/AI specialists, and stakeholders to keep the AI roadmap aligned with product value.Project budget: €216k.
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Education
- Master's in Computer Science, Computer Programming, Specific ApplicationsEPITECH - European Institute of Technology2020Focusing on advanced software design, coding, and implementation tailored to meet unique user or business needs.
- Bachelor's in Computer EngineeringMIT2020Focus on Architecture and Scalability.
Certifications
- Javascript ExpertSkillValue2018