Software Engineer, Full Stack Developer, Backend Developer
Listed on 2026-02-28
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Software Development
Software Engineer, Full Stack Developer, Backend Developer
Engineering plays a very central part in the business.
As a company with ambitions to be a world-class API solution for all things tax, we value quality over quantity when building, and we care about creating scalable and maintainable software that our customers and daily users can rely on.
Some pointers about our engineering culture:
- Engineers are given customer problems to solve rather than features to build.
- We understand the customer's needs before considering implementation details.
- Engineers are owners of their past, present and future; architecture, tools, coding, testing, deployment, operations and scaling
- We work in lean, small teams. We co‑own the product roadmap with product managers
- We choose collaboration, compassion and trust over individualism and politics
- We prefer innovation, constant iteration and trust over competition and perfect solutions.
- We support each other, are kind by nature, and give as much feedback to improve as professionals.
- We break down complex problems and consistently seek to find the most straightforward solutions.
- We take quality seriously and factor it into everything we do.
- We are comfortable with change, either in priorities, goals and deadlines. We see this more as an opportunity than a hurdle. We are not satisfied with the status quo and push for change.
- We seek those looking to make a severe impact and are excited about working in a high‑growth startup.
- We ship fast, continuously, and iteratively, learning each step.
- We are data‑informed. And are ok with finding the data when it’s missing.
We have a suite of API products that automate tax‑related workflows for any internet company. Those products are Lookup, Tax, Returns, Data sharing and E‑Invoicing.
We may discover novel customer needs as we learn and spin up new products as required.
Our API docsFor you as an engineer, API documentation is probably an important part when considering a new career move. Thanks to the API docs, you can recognise how API works and how it is structured.
Please, visit our API documentation and learn more about our API endpoints and how to use them -
Our Tech StackFonoa has a suite of API products that automate tax‑related workflows for any internet company. Check them out below:
- For backend, we use Node and Go
- For the frontend, we use React
JS and Typescript - For persistence, we use PostgreSQL
- We use Azure and GCP for our cloud services
- We manage our infrastructure with Terraform, Kubernetes CRDs, ArgoCD and Data Dog.
“As an engineer, I follow a product through its lifecycle, from ideation to delivery and support, which gives a lot of exposure to the technology and customer needs. This allows me to learn to improve both myself and the product constantly.” - Philip Beel, Engineering Manager.
What you will do- Learn about how painful it is for companies to handle tax manually, and think about how our products are changing the status quo
- Own what you build, with the ability to decide how to make it and the responsibility of operating it in the production environment.
- Build meaningful products with REST APIs that our customers use and depend on for everyday business (finance, operation, tax and developer teams)
- Build new product features across the stack, from back‑end business logic implementation to front‑end customer‑facing interfaces.
- Write high quality robust, modular code for frontend and backend
- Ensure the technical feasibility of UI/UX designs as well as internal applications capabilities
- Record and collate lots and lots of data sets from all these operations for long‑term storage and future insight
- Use every learning and observation to improve our products, constantly
- Understand customer needs and the pain they are experiencing related to tax automation
- Understand competitive products
- You are fully proficient in English. Written and spoken, we are from around the world, but we work in English.
- You have a strong sense of ownership, care about what you build, and do the right thing that serves your customers.
- You’re a builder at heart; you like the opportunity of having tons of exposure, making things work for a company long term, and having an entrepreneurial…
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