Lead Front-End Developer

Divin Ndayishima

I design performant, accessible and maintainable web and mobile interfaces. From component to system, I structure the front-end to last.

Expertise

What I can bring to your project

Over 8 years of experience serving demanding web and mobile products, for enterprise clients and startups alike.

Web Applications

Design and development of performant React / Next.js applications, from marketing pages to complex SaaS products.

Mobile Applications

Cross-platform React Native application development, with particular attention to fluidity and user experience.

APIs & Back-End

Robust API design with Node.js and NestJS, database integration and securing front/back exchanges.

Quality & Testing

Unit and end-to-end testing strategies to secure critical user journeys and reduce regressions.

Performance & A11Y

Web performance audit and optimization, accessibility standards compliance, for products that serve all users.

Technical Leadership

Structuring front-end practices, code reviews, team mentoring and guidance on architectural decisions.

Experience

Ambitious projects, concrete results

Nov. 2023 — PresentFreelance

Lead Front-End Developer

BNP Paribas Cardif

Complete overhaul of an existing business platform, in a context of high functional stakes and scaling challenges, designed to support several hundred thousand daily connections. The project demands high standards in terms of performance, accessibility (A11Y) and software quality.

React 18React 19TypeScriptTailwind CSSTanStack QueryReact Router v7ViteVitestGitDocker
Jun. 2022 — Sep. 2023Permanent

React Native Developer

norsys x ZOL (R.A.S Intérim)

Development of a consumer-facing mobile application for temporary workers of the R.A.S group, enabling them to access their personal space and essential business services. The project presents high requirements in terms of mobile user experience, production reliability and quality of exchanges between the application and back-end APIs.

React NativeTypeScriptReduxNestJSMongoDBJestDetoxDockerAWS
Nov. 2021 — Jun. 2022Permanent

Front-End Developer

norsys x HomeServe

Development and evolution of online subscription journeys for home service contracts (plumbing, electricity, heating, etc.). The project sits in a context of high business stakes, with regulatory constraints and a direct impact on conversion and revenue.

ReactGatsbyGraphQLPrismicPuppeteerDocker
Sep. 2020 — Oct. 2021Permanent

Fullstack Web & Mobile Developer

Plebicom (eBuyClub)

Development and evolution of consumer-facing web and mobile platforms, including eBuyClub and white-label mobile applications, in a context of high-traffic products with strong user visibility.

ReactNext.jsReact NativeJava Spring Boot
Apr. 2018 — Aug. 2020Permanent

Web Developer

Lambdasoft

Development and evolution of business web solutions in the healthcare domain, including medical practice management applications and associated services. The projects sit in a context of functional reliability, sensitive data management and services connected to external systems.

ReactNode.jsJavaScriptBash

Tech stack

The technologies I master

Front-End

TypeScript95%
React95%
React Native88%
Next.js85%
Tailwind CSS90%

Back-End

Node.js82%
NestJS78%
MongoDB75%
PostgreSQL70%
Java Spring Boot65%

Testing & Quality

Jest / Vitest90%
Playwright72%
Detox70%
Accessibility (A11Y)85%

DevOps & Tooling

Git92%
Docker75%
CI/CD (GitLab, GitHub Actions)80%
Vite88%

Contact

Have a project in mind? Let's talk.

Available for freelance missions as a lead front-end developer, React / React Native development or fullstack consulting. Based in the Paris area, I work on-site or remotely.