> Markdown version of [/jobs/ext/1650542-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/1650542-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Full Stack Engineer - **Company:** Bjak - **Location:** Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, User Authentication, Databases, Software Debugging, Next.js, Systems Integration, ReactJS, Backend, Vue.js, Front End Software Development - **Published:** July 16, 2026 - **Apply:** https://es.trabajo.org/oferta-4112-18c9145b11735404741f06a10e8de514 ## About the Role across frontend, backend, APIs, databases and production debugging. Good frontend execution using React, Next.js, Vue or similar modern stack. Good backend fundamentals around APIs, data models, authentication, integrations and reliability. Strong product sense and ability to simplify messy workflows. Able to work fast with ambiguity and own outcomes end-to-end. This Role Is Not For Engineers who only want to work on one narrow layer. People who need complete specs before starting. Developers who ship UI without understanding backend or operations impact. Candidates who avoid production support. People who make vague claims without showing real shipped work. The Bar We are looking for engineers with real technology career highlights. A strong highlight is not just working at a famous company. A strong highlight means you personally helped build, ship or scale a serious product, platform or system. Location This role is remote, but candidates must be based in Spain. We are hiring for this market specifically, so applicants should already be based in Spain. Language English is our main working language across global teams. Strong English communication is required. Interview Process Our process is designed to move fast: 1. Online assessment or practical task 2. Technical interview 3. CEO / final round For strong candidates, we aim to complete the process and make an offer within 1 week from the start of the interview process. Candidates who complete assessments quickly will be prioritized. ## Description If you're this person, we'd love to talk to you. The Role We are looking for full stack engineers to build fast across BJAK's AI Neobank app. This role is for product-minded engineers who can move across frontend, backend, internal tools and customer journeys to turn ideas into working products quickly. What You'll Own Build and ship full product features across frontend, backend, APIs and databases. Create customer and internal workflows for onboarding, accounts, payments, rewards, travel, FX, support automation, KYC and risk. Turn ambiguous product problems into working systems with clean UX and reliable backend logic. Work closely with product, design, mobile, backend and AI engineers to launch fast and improve after release. Build internal tools and automation that reduce manual work and help teams operate at scale. Own your work beyond release: monitor, debug, learn and improve. What We're Looking For Strong full stack engineering experience with real shipped products. Comfortable ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [From Zero to Hero: NextJS 13 and Tailwind CSS for Beginners](https://www.wearedevelopers.com/videos/766-from-zero-to-hero-nextjs-13-and-tailwind-css-for-beginners) - [Your next 10x engineer isn't in your city. Refactor accordingly.](https://www.wearedevelopers.com/videos/100103-your-next-10x-engineer-isn-t-in-your-city-refactor-accordingly) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)