---
title: 'Senior Product Engineer (f/m/d) at Integral Services GmbH'
canonical: 'https://feeny.ai/job/senior-product-engineer-f-m-d-integral-services-gmbh-berlin-pj7pf0smyr2v'
type: 'job'
last_seen: '2026-09-13'
---

# Senior Product Engineer (f/m/d) at Integral Services GmbH

- **Company:** Integral Services GmbH
- **Location:** Berlin, Germany
- **Employment:** full-time
- **Work type:** hybrid
- **Posted:** 2026-08-03
- **Last confirmed live:** 2026-09-13
- **Apply:** https://jobs.ashbyhq.com/integral-de/40ff59a6-fd3c-47f5-ab91-c957faf7f807

## Job description

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](http://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

We value diversity and hire people based on their abilities and capabilities to succeed in this role. We welcome people of every background, gender, gender identity, sexual orientation, religion, age, disability status, political belief or marital status.

## About Integral Services GmbH

## Company Overview
- **One-liner**: Integral is an AI-native platform for accounting, payroll, and tax advisory, built to simplify financial compliance for European SMEs.
- **Entity Type**: Private (Seed-stage startup; raised €6.3M pre-seed in February 2025, plus additional growth capital in November 2025)
- **Headquarters**: Berlin, Germany (Schönhauser Allee 148, 10435 Berlin)
- **Founded**: 2025
- **Founders**: Lukas Christian Zörner and Anil Can Baykal

## Core Business
- **Primary industries**: Accounting, Payroll, Tax Advisory, Fintech
- **Target customers**: Startups and SMEs in Germany and Europe (B2B)
- **Mission / purpose**: "Transform the way businesses manage their finances" by building the leading AI-native accounting, payroll & tax services group for European SMEs.

## Products & Services
- **Integral Platform (SaaS)**: Cloud-based dashboard that integrates with 100+ German business banks, payment providers (e.g., Stripe), and other tools. Handles bookkeeping (weekly posting, monthly BWA), payroll (digital employee management, compliance), and tax filings (annual financial statements, tax returns) in one place. Automates transaction import and document management.
- **Human advisory layer**: Each customer gets a personal tax advisor and payroll accountant available within 24 hours. The technical platform is operated by Integral Services GmbH; reserved tasks (e.g., audits) are performed by Integral Tax GmbH Wirtschaftsprüfungsgesellschaft.

## Market Standing
- **Valuation / Market cap**: Not disclosed (private company)
- **Key metric**: Total funding – €6.3M pre-seed (Feb 2025) + undisclosed additional growth capital (Nov 2025)
- **Notable investors**: Not publicly named in available sources (the career page states "Backed by the Best" but no specific names cited)
- **Growth signals**:
  - Named to Euro Seed 50 list of most promising European startups (August 2025)
  - Acquired cleverlohn (November 2025) to accelerate expansion in payroll
  - Rapid hiring: multiple open roles (engineering, product, tax specialists, sales) as of mid-2025
  - Featured on German national news (Tagesschau) in July 2025

## Competitive Advantages
- **AI-native platform**: Uses artificial intelligence to automate bookkeeping, data extraction, and compliance workflows – combined with human expertise for advisory and reserved tasks.
- **Integrated one-stop shop**: Accounting, payroll, and tax advisory on a single platform, reducing the need for multiple vendors.
- **Fast‑moving startup with deep domain knowledge**: Founded by experienced operators and already acquiring complementary businesses (cleverlohn).
- **Scalable pricing**: Transparent per‑pay‑slip pricing and growing integration ecosystem.

## Strategic Focus
- Continue building the "leading digital tax platform for SMEs" across Europe.
- Expand integrations (monthly new additions) and grow the customer base beyond Germany.
- Double down on AI automation while maintaining a human advisor layer for complex tasks.
- Leverage the cleverlohn acquisition to scale payroll services.

## Why Work Here
- **Work culture & environment**: Small, ambitious team that values ownership ("Eat the Frog"), relentless optimism, and impact. Twice‑a‑year offsites for all teams.
- **Flexibility**: Hybrid/remote setup; modern office in Berlin’s Prenzlauer Berg. Most interviews are remote; the process averages ~2 weeks.
- **Compensation & perks**: Above‑market salary, VSOP (Virtual Stock Option Plan) for ownership, company pension (bAV), Sachbezug, free choice of equipment, weekly team lunches, company retreats.
- **Languages**: English and German used internally (requirements vary by role).
- **Onboarding**: Dedicated onboarding team with structured first‑week and first‑month plan; tools and equipment provided from day one.
- **Growth**: "Steep learning curve" – clear development paths, real responsibility, and fast progression.

## Sources
1. [integral.de/en](https://www.integral.de/en) – Company overview and platform features
2. [integral.de/de](https://www.integral.de/de) – Services in German (bookkeeping, payroll, tax)
3. [integral.de/en/career](https://www.integral.de/en/career) – Career page (mission, benefits, values, hiring process)
4. [integral.de/de/career](https://www.integral.de/de/career) – German career page (same content)
5. [integral.de/de/imprint](https://www.integral.de/de/imprint) – Legal info (founders, registration, address)

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