Senior Software Engineer, Taxfix
+ Stock Options
Digital tax solutions
Open for applications
Digital tax solutions
201-500 employees
Open for applications
+ Stock Options
201-500 employees
Company mission
To enable anyone, regardless of education or background, to file their taxes with newfound confidence.
Role
Who you are
- Professional software engineering experience (React, Node.js) and designing reliable backend services and APIs. Experience with React Native experience is a plus
- Able to work effectively across system boundaries and collaborate with engineers outside your primary specialism
- Use AI-assisted development tools in your daily engineering work to accelerate exploration, implementation, testing, debugging, and documentation while maintaining high engineering standards
- Able to evaluate and troubleshoot AI-generated output, use effective prompting where relevant, and share practical learnings with teammates
- Experience working with a public cloud environment such as Google Cloud, AWS, or Microsoft Azure
- Familiarity with DevOps concepts and practices, including CI/CD, observability, and operating software in production
- Understanding of core application and backend concepts such as authentication, databases, distributed systems, cloud infrastructure, and API integrations
- A builder-first, pragmatic approach: You turn customer problems into shipped outcomes. You take initiative, test and learn quickly, and make clear trade-offs between speed, quality, maintainability, and risk
- Passion for writing maintainable, elegant code and continuously improving how software is built
- A collaborative, positive attitude and a willingness to challenge ideas constructively
- You have a builder mindset. You thrive in environments where things are still taking shape, take initiative to move ideas forward, and find ways to create impact even when the path isn't fully defined
- You embrace trying things out over waiting for perfect conditions, ship early to learn fast, and treat iteration as progress
What the job involves
- As a (Senior) Software Engineer, you’ll build core features for our flagship product, turning complex tax scenarios into simple, reliable experiences
- You’ll bring a builder-first mindset: staying close to customer problems, using AI and modern engineering tools to move from idea to impact quickly, and taking ownership of outcomes—not just code
- You’ll work hands-on in a cross-functional team and bring deep expertise in either frontend or backend engineering, while collaborating effectively across the stack
- You’ll help us raise the bar for scalable design, quality, maintainability, and AI-first software development
- Partner with product management, design, and engineering to understand customer problems, shape pragmatic solutions, and deliver measurable outcomes
- Own work end to end—from discovery and technical design through implementation, release, monitoring, and iteration
- Turn ambiguity into action, make sound trade-offs, and deliver valuable increments without compromising long-term maintainability
- Contribute to technical direction and strategy in support of the long-term product vision
- Use AI-assisted development tools in your daily engineering work to accelerate exploration, implementation, testing, debugging, and documentation while maintaining high engineering standards
- Critically evaluate, validate, and troubleshoot AI-generated output, using effective prompting and appropriate safeguards rather than accepting results at face value
- Share effective AI-assisted development practices, encourage responsible experimentation, and help teammates improve how they use AI tools
- Improve developer experience through tools, automation, and engineering practices that enable reliable, frequent delivery
- Collaborate across product and platform teams, and contribute to an environment where people learn, grow, give constructive feedback, and raise challenges safely
Our take
For many people, filing taxes is still a painstaking, confusing and outdated process. In Germany alone, around 10 million people each year decide not to claim their tax refund for this reason. Taxfix solves this problem by making it easier to file tax returns and claim rebates.
Taxfix serves as a personal tax accountant, something that many of its users don't have access to. The app functions much like any chatbot, offering in-depth guidance and optimising the tax filing process. Users can typically file their taxes in under 20 minutes using the app, which will appeal to anyone looking to save time and effort on their personal finances.
Taxfix is not alone in offering this service, but it sets itself apart from rivals thanks to its mobile-first approach. The company has been well-served by its innovative and attractive app interface and acquired its German competitor Steuerbot in 2023. A year later it entered the UK market by acquiring smaller competitor Taxscouts, establishing itself as the European leader in its sector.
Steph
Company Specialist at Welcome to the Jungle
Insights
7% employee growth in 12 months
Company
Funding (last 2 of 5 rounds)
Apr 2022
$220m
SERIES D
Apr 2020
$65m
SERIES C
Total funding: $326.2m
Company benefits
- A chance to do meaningful, people-centric work with an international team of passionate professionals
- Holistic wellbeing with free mental health coaching sessions, yoga, and a discounted membership to Urban Sports Club
- A monthly allowance to spend on home support services, including childcare, housekeeping, pet sitting, tutoring, and elderly care
- Employee stock options for all employees—because everyone deserves to benefit from the success they help to create
- Dedicated relocation and visa support for those that need it
- 30 annual vacation days and flexible working hours
- Full trust to take ownership of your work in a flat hierarchy where feedback is encouraged and expected
- A generous learning budget to support your personal and professional development and guidance from our internal L&D experts
- Work from abroad for up to six weeks every year. Just align with your team, and then enjoy your trip
- Plenty of opportunities to socialise as a team. In addition to internal meetups, our international team hosts regular get-togethers—virtually and in person when possible
- Free tax declaration filing, of course, through the Taxfix app—and internal support for all personal tax-related questions
- Have a four-legged friend in your life? We’re happy to have dogs join us in the office
Company HQ
Mitte, Berlin, BE
Leadership
Mathis Büchi
(Chairman & Co-founder)Previously co-founded Encounter Korea and Smallpdf. Currently Founder and CEO at Genova.ai.
Lino Teuteberg
(Co-founder)Former CEO of the company. Previously worked as an Interaction Developer at springen, and co-founded Smallpdf.
Martin Ott
(CEO)Was a Board Member at AfriKids, President and Managing Director (Europe, Middle East and Africa) at WeWork, and VP, MD (Central Europe) at Meta.
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