--- title: 'Senior AI Engineer (f/m/d) at Integral Services GmbH' canonical: 'https://feeny.ai/job/senior-ai-engineer-f-m-d-integral-services-gmbh-berlin-ns5ahyfjvn79' type: 'job' last_seen: '2026-09-13' --- # Senior AI Engineer (f/m/d) at Integral Services GmbH - **Company:** Integral Services GmbH - **Location:** Berlin, Germany - **Employment:** full-time - **Work type:** onsite - **Posted:** 2026-07-21 - **Last confirmed live:** 2026-09-13 - **Apply:** https://jobs.ashbyhq.com/integral-de/691b437e-3385-4705-a057-a3fed9a3970d ## 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 AI Engineer, you will build intelligent, reliable AI systems that help SMEs navigate financial and tax operations. Own outcomes, not just output, balancing speed and craftsmanship. This role follows a hybrid schedule in our Berlin office to collaborate effectively with the team. Core responsibilities ## What you'll do - Build and deploy AI agents that automate accounting, payroll, and tax workflows - Develop LLM-based systems using modern frameworks and prompt engineering with quality control - Integrate AI capabilities with existing systems and APIs - Optimize performance, cost, and reliability of AI features What makes it special - High ownership: you'll shape what we build and how we build it - Tight feedback loops with domain experts and customers - Pragmatic pace: ship, learn, iterate, without sacrificing quality ## Your profile ## Your Experience & Mindset - You have 5+ years experience in Software Engineering and AI - You've worked in early-stage startups or scale-ups where you had to wear multiple hats (coding, testing, UI, integrations) - Hands-on experience building with LLMs (OpenAI, Anthropic, or similar): APIs, prompt engineering, structured outputs, agent frameworks (LangChain, LangGraph, or similar) - You actively use AI coding tools like Cursor, Codex, or Claude in your daily workflow — and you can talk about how and why - Experience with RESTful APIs, cloud services, and testing/QA for AI systems - You're comfortable with ambiguity and high ownership: you'll manage multiple projects simultaneously and organize your own delivery ## Preferred experience - You came from software engineering and have deliberately moved into AI - Strong Python skills: you can actually code, not just prompt The process We like to move fast, and with the right candidate, the entire process can be completed in less than two weeks. - Intro Call with our Talent Team - Deep dive Interview with our CTO & co-founder - On-site Coding Interview at our Berlin office with the engineering team - 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 - Either Urban Sports Club membership, coupons via Hrmony or Deutschlandticket, your choice - 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 after 8pm - A team of 50+ (and growing!) ambitious, diverse people, 20%+ ex-founders learning and building together - The opportunity of a decade to build a category-defining AI-native services leader 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)