About Johan
From research projects to start-ups, I have a record of transforming ambitious ideas into functional products that last. I excel at the intersection of deep-tech research and high-velocity execution, architecting frameworks for automated forensics and identity that withstand untrusted environments. I balance technical integrity with momentum to engineer systems that exceed expectations fast.
I master the following languages and frameworks:
- Node.js/Bun Javascript/TypeScript development
- Next.js/React/Solid.js and related JSX libraries
- Tailwind with DaisyUI and related tailwind-based librares
- Flutter with platform-dependent features integration (Swift/Kotlin/Java)
- Go Golang with extensive experience with ffmpeg and cryptographic processes
- Rust with extensive experience with libp2p, cryptography, and related technologies
- Python with extensive experience with programmatic Docker/Podman orchestration; OpenCV and FFMpeg workflows
For all languages above, I master the integration and development of the following technologies:
- Cryptography alongside ZK Zero-Knowledge proofs, secure hardware components, streamed encryption/decprytion, KMS key rotation, key delivery from-scratch design/integration. I built a real experience working with AEAD-related algorithms such as XChaCha20-Poly1305.
- FFMpeg and signal processing libraries. I have extensive experience with steganography, frame extraction, and frame analysis.
- All web development good practices and quality integration.
- Docker/Podman/Serverless architecture/CI/CD integration and orchestration at scale.
- GCP/Postgresql integration and orchestration at scale.
Over the years, I worked with the following products (non-exhaustive):
- MapBox
- Resend
- GCP, especially Cloud Scheduler, Cloud Jobs, Firestore, Realtime DB, and Authentication.
- Vercel Hosting
On my spare time, I am currently working on: Multi-modal detection of fake content through physics-related incentives.
English
Native or bilingual
French
Native or bilingual
Can work on-site
Lyon (up to 50km), Paris (up to 30km)
Experience
- FreelanceFreelance DeveloperAugust 2024 - Today (1 year and 10 months)As a freelance developer, I've grown my skills impressively over the years. My diverse portfolio includes iden tity systems, forensics capture protocols, and technical roadmaps for PoC/MVP. These projects have honed my ability to research and develop innovative technologies, understand the needs of deep-tech startups and become a project lead.
- Veriscope ABTech LeadSeptember 2025 - March 2026 (6 months)Originally hired to develop a Proof of Concept, I had the chance to layout a complete technical trajectory for the company. From blockchain-based public monitoring solutions to advanced cryptographic processing, I developed a technically innovative system across web and mobile front-ends supported by back-ends.
- Franchisé MobalpaLead Software EngineerAugust 2022 - January 2024 (1 year and 5 months)With the aim of fulfilling the needs of an ever-growing and busy team, I was hired to develop a CRM software tailored to the specific use-cases of the company. This collaboration resulted in the development of a multi platform software able to handle 3D scenes showcasing, B2C relationship evolution, and billing & accounting. The developed system has been engineered to switch between on-premise and cloud infrastructures in a click.
Recommendations
Be the first to recommend Johan
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Full-Stack Developer Professional CertificateIBM2023Full-Stack Developer Professional Certificate