Overview
Senior Developer (Freelance to Full-Time) – Spendigo
Duration & Availability: 3+ month contract (start ASAP). Location: Toulon (France) / Remote-friendly. Languages: English required, French appreciated.
Context
Spendigo is building a digital tipping platform (web & mobile). We're looking for a Senior Developer / Lead Engineer to design, develop, and scale the product alongside the founders. This is a true builder role: on coding, architecture decisions, mentoring, and direct impact on the roadmap.
Responsibilities
- Back-end: Design a scalable REST API in Go, build core modules (users, card & ACH transactions), integrate Stripe & Plaid, microservices, performance & security.
- Front-end: Set up and evolve a React scaffold (responsive web), collaborate with the designer on customer & admin interfaces.
- Infra / DevOps: Deployments on AWS, CI/CD with GitHub Actions, quality assurance & observability.
- Product & Leadership: Tech stack decisions, mentoring, aligning business & tech priorities, solving complex issues.
Tech Stack & Environment
- Go, React (React Native or similar)
- AWS (or GCP/Azure), GitHub Actions, IaC (infrastructure as code)
- Mobile experience (iOS/Android), QR/NFC/POS integrations are a plus
Profile We're Looking For
- 5+ years of full-stack experience; senior level
- Strong expertise in Go with strong React proficiency
- Fintech / payments background (ideally) with Stripe & Plaid
- Startup & remote work experience
- Clear communication, ownership mindset
- Fluent English; French is a plus
Nice-to-Haves
- IoT integrations, advanced CI/CD, technical leadership / Lead experience
What We Offer
- 3+ month mission, with possible transition to full-time (salary + equity)
- High-impact role, direct exposure to product & founders, potential CTO/leadership track
- Hybrid setup from Toulon (France) / first with distributed team
- Autonomy & ownership: your code will directly shape the customer experience
Terms
- Daily rate (TJM): please propose your range (based on experience)
- Commitment: time preferred, time possible
Selection Criteria
- References / proven projects in SaaS / fintech / payments, or strong scalability challenges
- Strong GitHub portfolio, clarity of reasoning (short note explaining your tech choices)
- Alignment with stack & term availability
Looking forward to hearing from you