Senior Full Stack Developer Lisboa

Senior Full Stack Developer
Lisboa
Lisboa, Lisboa, Portugal

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.

Example Missions

• 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 / Dev
  Ops: Deployments on AWS, CI/CD with Git
  Hub 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 also considered)
• REST / Graph
  QL, microservices, Postgre
  SQL
• AWS (or GCP/Azure), Git
  Hub Actions, Ia
  C appreciated
• Mobile experience (i
  OS/Android), QR/NFC/POS integrations are a plus

Profile We're Looking For

• 5+ years
  - stack experience, senior level
• Strong expertise in Go + ; highly proficient with React
• Fintech / payments background (ideally) ;
  - on with Stripe & Plaid
• Startup & remote work experience
• Clear communication,
  - oriented mindset, strong ownership
• Fluent English; French is a plus

Nice-to-Haves

• Io
  T integrations, advanced CI/CD, technical leadership / Lead experience

What We Offer

• 3+ month mission, with possible transition to
  - time hire (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
• Start date: ASAP

Selection Criteria

• References / proven projects in Saa
  S / fintech / payments, or strong scalability challenges
• Strong Git
  Hub / portfolio, clarity of reasoning (short note explaining your tech choices)
• Alignment with stack &
  - term availability

Looking forward to hearing from you

Job Type: Permanent

Pay: 30, 000. 00€ - 60, 000. 00€ per year

Language:

• Anglais (Required)