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Senior Product Engineer

Berlin
Full-time
Permanent employee

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. 

This role follows a hybrid schedule in our Berlin office to collaborate effectively with the team.

Your Tasks

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

Core responsibilities

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

  • Internal tooling and resources purpose-built to support agentic AI development at scale
  • 28 vacation days per year with December 24th and 31st each counting as half days
  • Urban Sports Club membership or Deutschland Ticket, your choice
  • Laptop of your choice: MacBook or Windows Pro
  • Company pension plan (betriebliche Altersvorsorge)
  • Modern office in the heart of Berlin Prenzlauer Berg, steps away from Mauerpark
  • Hybrid working format, the best of both worlds: deep focus when you need it, and genuine team time when it counts
  • Weekly team lunches provided by us, office BBQs and a dinner budget for late office nights past 8pm
  • A team of 50+ (and growing!) ambitious, diverse people learning and building together!