--- title: 'Senior Product Builder at Integral Services GmbH' canonical: 'https://feeny.ai/job/senior-product-builder-integral-services-gmbh-berlin-dmsvw581cgst' type: 'job' last_seen: '2026-09-06' --- # Senior Product Builder at Integral Services GmbH - **Company:** Integral Services GmbH - **Location:** Berlin, Germany - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-07-08 - **Last confirmed live:** 2026-09-06 - **Apply:** https://jobs.ashbyhq.com/integral-de/e9888b2f-20a6-4b8b-840c-1a001d4f762f ## Job description ## MISSION Integral was founded in October 2024 and is already one of the fastest-growing startups in Germany. We're building the leading AI-native platform for accounting, payroll, and tax for European SMEs, and we're looking for the sharpest people to help us get there. As Senior Product Builder, you own a core area of the product end to end. You work alongside top-tier engineers and build with them: you write specs, prototype ideas, and ship, using AI tools the way an engineer does. You sit with users, find what slows them down, and give them that time back. The domain is complex and heavily regulated, so getting it right means holding several things at once: what the user needs, how Ops works today, and what the rules demand. AI makes a product like this possible. The bar is whether it's genuinely good for the people who use it. You work in a small team, close to the founders. Onsite in our Berlin Prenzlauer Berg office. ## CORE RESPONSIBILITIES - Build, not just decide. Prototype your ideas, ship features with engineering, and stay close enough to the code to make real product calls. - Learn the domain cold. Sit with accountants, watch how the work actually happens, and learn German bookkeeping well enough to know what "correct" means before you build it. - Get the workflows right. Accounting and payroll have to be correct, auditable, and traceable. You set that bar and check it against real client data. - Decide how AI fits. Work out what AI can own today, what stays with a person, and how that line moves as models improve. Design workflows that get better as the technology does. - Free people from the grunt work. Turn today's manual steps into agents that handle them, cut exception handling, shorten time to close, and measure the hours saved. - Own your area. Discovery, prioritisation, release, iteration. You call what ships and when. What makes it special: - You build a product area that sits at the center of what Integral does, and you actually build it. - You work directly with the CTO and a senior engineering team that ships fast and cares about craft. - You're early enough that the big product decisions are still open. - Your work reaches thousands of business founders in Germany who run their finances on Integral. ## YOUR PROFILE - You build. You prototype your own ideas, you can take them most of the way yourself, and you'd rather ship a rough version than write a long doc about it. - You use AI tools effectively, to build and not just to chat, or you're hungry to learn. - You've taken products from 0 to 1 and know what that actually takes. - You move on your own, think in systems, and bring clarity to messy domains. - You hold a high bar without chasing perfection. You ship, learn, and improve. - You're fluent in German and English. ## Preferred Experience - Experience in fintech, or building software for accounting, payroll, banking, or other money-movement domains. - A track record with genuinely complex systems: lots of state, edge cases, and integrations, where getting the details wrong has real consequences. - A working feel for German tax and regulatory requirements for small businesses. ## THE HIRING PROCESS We move fast. The full process takes less than two weeks. 1. Intro call with our Chief of Staff 2. Product deep-dive interview with our Product Building team 3. Reference calls 4. On-site in Berlin: meet the team, work through a real product problem together, meet the co-founders, and an office tour ## 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, Sachbezug to over 200+ partner companies, or Deutschlandticket - Laptop of your choice: MacBook Pro or Windows - Company pension scheme (bAV) - Modern office in the heart of Berlin Mitte, right next to Mauerpark - Weekly team lunches on us, office BBQs, and a dinner budget for late nights - 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) ## Other roles at Integral Services GmbH - [Talent Acquisition Manager (all genders)](https://feeny.ai/job/talent-acquisition-manager-all-genders-integral-services-gmbh-berlin-p2nddmm97zz3) — Berlin, Germany - [Steuerberater (all genders) bis zu 100% Remote](https://feeny.ai/job/steuerberater-all-genders-bis-zu-100-remote-integral-services-gmbh-remote-mnsc4d7awbqn) - [Founders' Associate (all genders)](https://feeny.ai/job/founders-associate-all-genders-integral-services-gmbh-berlin-bg8kfkpy0e7g) — Berlin, Germany - [Visiting Founders' Associate](https://feeny.ai/job/visiting-founders-associate-integral-services-gmbh-berlin-7phejbjke528) — Berlin, Germany - [Lohnbuchhalter:in / Payroll Specialist (all genders) bis zu 100% Remote](https://feeny.ai/job/lohnbuchhalter-in-payroll-specialist-all-genders-bis-zu-100-remote-integral-maw15vtc00fq) — Berlin, Germany - [Senior DevOps Engineer](https://feeny.ai/job/senior-devops-engineer-integral-services-gmbh-berlin-bg1d6a8xdwjp) — Berlin, Germany - [Senior Product Engineer (f/m/d)](https://feeny.ai/job/senior-product-engineer-f-m-d-integral-services-gmbh-berlin-pj7pf0smyr2v) — Berlin, Germany - [Senior FP&A Manager](https://feeny.ai/job/senior-fp-a-manager-integral-services-gmbh-berlin-ershtrkhdzbf) — Berlin, Germany - [Customer Success Manager (all genders)](https://feeny.ai/job/customer-success-manager-all-genders-integral-services-gmbh-berlin-n8dgn4p7kx8j) — Berlin, Germany - [Bilanzbuchhalter:in (all genders)](https://feeny.ai/job/bilanzbuchhalter-in-all-genders-integral-services-gmbh-remote-2g8s3h5tem74)