Full Stack Engineer

About the job

Done Spend is seeking a Full Stack Engineer to build features and integrations that help businesses manage corporate cards, capture expenses and control spending in real time. As a Full Stack Engineer, you will take ownership of core platform components, contribute to architectural decisions and follow your work from initial idea through to deployment. You will work closely with the Technical Lead and Product team to shape how features are built and how the platform develops.

Responsibilities

• Building and maintaining secure, scalable frontend and backend components.
• Developing API integrations, authentication flows, webhooks and data synchronisation processes.
• Contributing to technical design and assessing the feasibility of new features with Product.
• Writing unit and integration tests, investigating bugs and improving performance and monitoring.
• Maintaining clear technical documentation and identifying opportunities to improve automation and reliability.
• Contributing to sprint planning and retrospectives, helping the team improve how it delivers software.

Qualifications

• You have 2 to 4 years of experience building production applications and can work across both frontend and backend development.
• Strong JavaScript and TypeScript skills, with experience writing production code across the stack.
• Experience in fintech, particularly payments or spend management, is a strong advantage.
• Experience with React and modern single-page application frameworks.
• Experience with NestJS or a comparable structured backend framework, such as .NET.
• Experience building and consuming RESTful APIs and/or working with event-driven systems.
• Experience with PostgreSQL, solid SQL fundamentals and confidence working with raw SQL, query builders and ORMs.
• An understanding of maintainable code, separation of concerns and scalable system design.
• Strong spoken English skills are required.
• You’re comfortable working in an Agile team and discussing technical decisions with colleagues across engineering and product.
• You consider how your code will be tested, maintained and operated after deployment, and take responsibility for resolving issues.
• React Native experience is required.

We offer

• Own meaningful parts of the platform.
• Take responsibility for core components, from feature development to architectural decisions.
• Influence technical direction.
• Work closely with the Technical Lead, Product team and leadership as the platform grows.
• Build across the stack.
• Work on user-facing features, backend services and the integrations that connect them.
• See your work in use.
• Build and improve systems that support real business spending and transactions.
• Choose between Oslo, Stockholm or Skövde.

How to apply

Interested in helping shape the next phase of Done Spend? We’d like to hear from you.