James B.
CTO - FullStack Engineer - 15 years XP
- TJM
- À partir de 500 €/jour
- Localisation
- Da nang · Full remote
- Langues
- Français, Anglais
Disponible immédiatement · 0 ans d'expérience
Compétences
- React4/5
- TypeScript4/5
- Go4/5
- Redis4/5
- PostgreSQL3/5
- Python4/5
- REST API4/5
- Docker4/5
- Supabase3/5
Spécialités
- Design systems
- Architecture logicielle
Expériences
Lead Developer
Freelance ·
Work on various projects since 15years ( fff.fr, remplajob.com, le10sport.com, and much more )
Founder & CEO
Upsiv Inc. ·
Founded and lead a B2B SaaS company (Delaware C-Corp), defining product direction, pricing strategy, and go-to-market · Designed a four-tier pricing structure (Test / Growth / Scale / Elite) with tiered commission rates · Built an investor outreach strategy targeting US angel investors via Crunchbase and Apollo · Building out company social presence and an AI-avatar-driven YouTube content channel for organic acquisition · Shipped the core platform end-to-end: AI-persona product, subscription/paywall flow, credit-based worker system, SSE streaming, transactional email pipelines, and an audio/v…
Founder
The Margin Method (TMM ·
Run a Meta Ads and CRO consulting practice for e-commerce and DTC brands · Delivered full account audits (tracking issues, creative fragmentation, ad-set structure) and hands-on campaign management for retained clients
E-commerce Operator
Independent ·
Managed and scaled Meta ad accounts across multiple e-commerce operations, including DOM-TOM-focused dropshipping, achieving documented ROAS above 12x · Built SaaS side-products (Textonaut, BlockNova)

