Full Stack Developer - Hybrid (Lisbon, Portugal) · Full time Starting date: ASAP

DescriptionYou'll own real product surface from week one: integrations with internal and external APIs that directly move our sales and expenses. Not a ticket-taker role — you'll design, ship, and maintain systems the business depends on daily. We're a small team. That means visible impact, direct access to decisions, and no place to hide. SanjowFrom ideas to ventures. Since 2018, we have built ventures from the ground up across various sectors — from simplifying complex online procedures to enabling customers around the globe to book the best travel deals. Our core team blends expertise in finance, operations, marketing, and IT, working hand in hand from our Lisbon studio to accelerate the growth of our projects. Our brand's name comes from the contraction of "support" in Japanese ("sanjo") and "flow". It is part of our brand's DNA to assist individuals and businesses with our turnkey online solutions. You will join our main tech team, collaborating closely with the payments team and the frontend product team. You will• Design and build integrations with internal and external APIs with direct impact on sales and expenses • Develop and optimize e-commerce websites and services • Maintain our back office and database • Ship frontend features in Next.js/React alongside our product team • Collaborate with the payments team on integration points • Contribute to CI/CD pipelines and deployment workflows • Ship daily with AI agentic tools (Claude Code, Cursor) — this is how we work, not a buzzword

What success looks like• 3 months: shipping independently across our integration stack; you know the codebase and the people • 6 months: owning key internal/external API integrations end to end; flagging risks before they become incidents • 12 months: trusted technical reference for your domain; driving improvements we didn't ask for