Freelancer profile translated to English.
Back to original languageAbout Roussange
Full stack developer with nearly 10 years of experience, specializing in front-end and modern cloud architectures.
I spent the last few years at CrowdSec, a French cybersecurity scale-up, where I was responsible for the Console — a SaaS platform used by over 100,000 users in 190 countries. There, I led the front-end architecture, design system, and front-end technical choices.
What I bring to your projects
Architecture & Technical Leadership
- Design of scalable front-end architectures (Next.js App Router, Server Components)
- Implementation of design systems with Tailwind CSS and reusable components
- GraphQL integration with automated TypeScript generation
Application Security
- CSP expertise, XSS protection, input validation
- Strong awareness of security issues (cybersecurity context)
Quality & Performance
- E2E tests with Playwright, Sentry monitoring
- Performance optimization (lazy loading, code splitting, caching)
I'm the right fit for you if:
- You're looking for someone autonomous capable of structuring a WEB/SAAS project from A to Z
- You need to improve the architecture or code quality of an existing application
- You value technical rigor without sacrificing velocity
Available for front-end, full-stack, or architecture consulting missions.
English
Fluent
French
Native or bilingual
German
Basic
Russian
Basic
Remote only
Primarily works remotely
Experience
- CrowdSecWeb Full Stack DeveloperFebruary 2022 - Today (4 years and 4 months)Backend Development for the Console• • Built and maintained the backend infrastructure using AWS, Node.js, AWS Lambda, Cognito, Amplify, TypeScript, and Prisma.• • Ensured scalability and security of authentication and data management systems.• • Wrote and maintained user documentation to improve onboarding and usability.• • Assisted in project management, ensuring smooth collaboration and timely delivery.
- SpiritteoCo-founder & DeveloperJune 2020 - Today (6 years)• • Developed the Spiritteo mobile application using Ionic and Angular, ensuring a smooth and engaging user experience.• • Built and maintained the Spiritteo website with Next.js, optimizing performance and SEO.• • Designed the UI/UX for both web and mobile platforms, focusing on usability and modern aesthetics.• • Developed and maintained internal applications and tools using Next.js, Node.js, TRPC, Apollo, GraphQL, and PostgreSQL, streamlining operations and enhancing platform efficiency.
- CEGEDIM ACTIVFull-Stack DeveloperSOFTWARE PUBLISHINGSeptember 2018 - Today (7 years and 8 months)Labège, FranceMobile application development - Ionic / AngularMobile delivery process automation - Gitlab CIMobile application security - IonicWeb portal maintenance - Angular JS and AngularAPI maintenance and evolution - C#
Reviews
Mathieu
kenweego sas
Reviewed on 8/6/2021
Efficient and good advice.
Jean-Baptiste
Studio Darman
Reviewed on 4/5/2019
Thank you Alexandre for your work and for following the instructions.
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Education
- Computer Science and Information Systems ExpertIngesup Toulouse