> Markdown version of [/jobs/ext/2724829-software-engineer-fullstack](https://www.wearedevelopers.com/jobs/ext/2724829-software-engineer-fullstack). 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). --- # Software Engineer - Fullstack - **Company:** Postaladdress - **Location:** Amsterdam, Netherlands - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Continuous Integration, Python (Programming Language), Node.Js, TypeScript, Data Processing, ReactJS, Backend, Vue.js, Build Management, AngularJS, Kubernetes, Production Code, Front End Software Development, Terraform - **Published:** September 5, 2026 - **Apply:** https://startup.jobs/software-engineer-fullstack-onramper-and-vacancies-apply-n-7926436 ## About the Role We're looking for a Full Stack Software Engineer at the upper mid-level - someone who is beyond executing tasks and is ready to drive meaningful technical work end-to-end. You'll spend roughly 70% of your time on backend (Node.js, TypeScript, APIs, cloud infrastructure) and 30% on frontend (React, TypeScript). You're not expected to be a specialist in both - but you are expected to be genuinely capable across the stack and comfortable context-switching between the two. This is a role for someone who owns their work. That means being involved from the moment a problem is identified, helping break it down, making sound architectural decisions, shipping it, and making sure it stays healthy in production., You must have: * Strong, production-proven experience with JavaScript/TypeScript - you know the language and ecosystem deeply, not just the basics * Solid backend experience. Node.js is most preferable, but not a blocker if you bring excellent backend experience with another prominent stack (Java, Go, or Python) * Solid frontend experience building and maintaining real applications - React.js preferred, but strong experience with another popular framework (Vue, Angular) is equally welcome * Hands-on experience with cloud infrastructure - AWS, GCP, or Azure - in a production environment * A working understanding of CI/CD pipelines and modern deployment practices * A security-conscious approach to development - you think about attack surfaces, data handling, and least-privilege access as a matter of habit * High ownership, end to end - you don't wait to be told what to do next, you lead topics from problem to production, and you don't consider your job done when the code is merged * Genuine interest in crypto and in Onramper as a product - you're excited about the space and want to go deep, not just ship tickets * The ability to work closely with product teams - you can translate between technical constraints and business needs, and you're comfortable pushing back when necessary It would be great if you also have: * AWS experience specifically (preferred over other cloud platforms) * Terraform experience for infrastructure-as-code * Kubernetes for container orchestration * Experience in fintech - particularly payments, transactions, or regulated financial systems * Based in or willing to relocate to Amsterdam, Netherlands (preferred but not required) ## Description * Design and build robust, scalable backend services and APIs using Node.js and TypeScript * Develop and maintain React-based frontend interfaces that are performant and maintainable * Collaborate closely with product and design to shape features from discovery through to delivery - not just implementation * Take ownership of your work end-to-end: scoping, building, shipping, monitoring * Contribute to and improve CI/CD pipelines, deployment processes, and cloud infrastructure * Write secure, well-tested, production-ready code with real uptime requirements * Participate in code reviews, architectural discussions, and technical decision-making * Help maintain the reliability and observability of production systems - and respond when things go wrong, You've built and shipped production systems that real users depend on. You've been in an incident, diagnosed it, fixed it, and made sure it doesn't happen again. You've sat with a product manager to figure out what to build - not just been handed a ticket. You write TypeScript that actually leverages the type system. You think about what happens when your code fails, not just when it works. You're not the most senior engineer in the room, but you don't need to be - you're the kind of engineer who makes the people around them better. Why This Role * Work on systems that process real financial transactions at scale * A team that trusts you to own your work from day one * Direct influence on technical direction - no layers of approval to get things done * A genuinely distributed, collaborative team culture where quality and craftsmanship matter * A growing Amsterdam presence - be one of the foundational members of that hub ## 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) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [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) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) ## Related Articles - [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam) - [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam) - [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) - [Software Developer Salary in The Netherlands [2023]](https://www.wearedevelopers.com/magazine/217-software-developer-salary-in-the-netherlands-2023) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)