Senior Product Engineer (f/m/d)
Mission
Founded in 2024 by Lukas Zörner and Anil Can Baykal, Integral set out to redefine how accounting, taxation and payroll works for SMEs in Europe, starting with Germany. The company is backed by General Catalyst, Cherry Ventures, Puzzle Ventures and entrepreneurs across Europe.
As Senior Product Engineer, you will help us build trustworthy product experiences that solve real customer problems on payroll, tax and accounting. Own outcomes, not just output, balancing speed and craftsmanship to deliver value that compounds using state-of-the-art tools and methodologies.
What you'll do
Ship user-facing features end-to-end: ideation, technical design, implementation, testing, release, and iteration
Collaborate with Product and Design to turn complex requirements into elegant, scalable solutions
Improve the reliability, performance, and security of our payroll, accounting, and tax platforms
Raise the bar on engineering quality via thoughtful reviews, pairing, testing, and documentation
Instrument features with analytics and logging; measure impact and iterate quickly
Own critical product areas with a bias for high-impact improvements
Balance short-term delivery with long-term architectural investments
Drive simplicity: reduce cognitive load for users and developers alike
What makes it special
High ownership: you'll shape what we build and how we build it
Your engineering decisions directly influence user experience and business outcomes
Tight feedback loops with customers and internal stakeholders
Pragmatic pace: ship, learn, iterate, without sacrificing quality
Experience & Mindset
5+ years in software engineering with significant product-building experience at a startup or high-growth company
Proven track record of owning features and services end-to-end and driving measurable customer impact
Comfortable with ambiguity and discovery; experienced collaborating closely with Product and Design
You turn constraints into focus, manage your own time, and leave codebases and teams better than you found them
You simplify complex systems, make good decisions reversible, and build comprehensible plans
Comfortable using AI coding tools like Cursor, Copilot, or Claude, and able to audit and test AI-generated code
Technical Skills
Strong in at least two of: TypeScript/JavaScript, Java, Python
Domain Driven Design: solid grasp of domain design and relationships
Testing: unit, integration, and end-to-end; CI/CD, feature flags, and rollout strategies
Observability: logs, metrics, traces; familiarity with SLOs and incident response
Security basics: authN/authZ, secrets management, threat modeling, secure coding practices
The process
1. Intro Call with our Talent Team
2. Deep dive Interview with our CTO & co-founder
3. On-site Coding Interview at our Berlin office with the engineering team
4. Founder Conversation with our CEO & co-founder
Our offer
Above-market salary
Direct line to the Founders: no filter, no queue, no committee
Total autonomy on what you build; we measure hours saved
The best tools, no questions asked: Claude Max, Cursor, OpenAI, whatever ships next week
Internal tools and resources purpose-built to support agentic AI development at scale, read about how we work at engineering.integral.de
28 vacation days per year, plus half-days on December 24 and 31
Urban Sports Club membership, coupons (Sachbezüge) to over 200 partners or Deutschlandticket, your choice
Best equipment you need to succeed
Company pension scheme (bAV)
Modern office in the heart of Berlin Prenzlauer Berg, right next to Mauerpark
Weekly team lunches on us, office BBQs, and a dinner budget for late nights after 8pm
A team of 50+ (and growing!) ambitious, diverse people, 20%+ ex-founders learning and building together
Find more English Speaking Jobs in Germany on Arbeitnow
Skills
- Engineering
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