Senior Full Stack Developer

Summary We are looking for a Senior Fullstack Developer (€70k - €90k / year) with over 6 years of professional experience. You will be working alongside the Engineering team building a payment infrastructure for online B2B transactions. The goal is to provide businesses with a quick, efficient, and exceptional checkout experience.

We’ve raised our Series B round and are funded by top-tier venture firms.

Location: Remote (Portugal) - the team gathers once every 2 weeks in a co-working space.

Salary: €70k-€90k/year

Contract: Contractor (B2B) or CoE What You’ll Do As a Senior Fullstack Developer, you will build and own core product features and integration applications. We’re expecting people to do these main tasks Solve complex problems, taking complete ownership of feature sets from initial discussion through to customer delivery.

Collaborate with PMs and Designers to build efficient web applications.

Participate in design and code reviews.

Identify and resolve issues quickly across the stack.

Implement automated testing and deployment processes to maintain code quality.

Share in team responsibilities, including production on-call support.

You'd be working 50% with React and 50% with Node.js (Nest.js). What We’re Looking For 6+ years of professional software development experience (required).

Expertise in JavaScript, ideally having worked with mainly with React.js and Node.js (mandatory);

Familiarity with test automation tools and libraries, preferably Jest/Playwright.

A solid understanding of UI/UX principles and experience in translating design concepts into functional user interfaces.

Experience working in an Agile environment, utilizing CI/CD workflows, and deploying dockerized solutions on a public cloud (preferably AWS).

Strong communication skills in English, both written and verbal.

An ambitious team player with the flexibility to work both independently and within a team.