Integral Services GmbH - Engineering Lead (f/m/d)
Requirements
• 8 to 10+ years of professional experience in software engineering with a strong track record of building and shipping in startup or scaleup environments • Experience across multiple companies and environments; you have seen different architecture patterns, made the mistakes, and know what actually works • Staff, Principal, or Senior Engineer background where building and owning was the main focus, not coordinating or managing • Proficiency across a broad technical background with a strong foundation in system design and architecture • Strong command of at least two of the following: Java/Kotlin, JavaScript/TypeScript, React/React Native, Python • Expertise in architectural decision-making: you can design systems that balance complexity with long-term maintainability • Autonomous and pragmatic: you frame problems independently, design solutions, and execute without needing extensive support from other teams • Strong written communication: you write detailed technical documentation and decision rationale as a default, not an afterthought • Focused execution: you thrive in a hands-on role and are energised by practical outcomes, not by building a team around you. • Experience building in regulated or compliance-heavy domains • Familiarity with German accounting, payroll, or tax systems is a plus but not required • Experience integrating LLMs or AI capabilities into production systems. • The process • The process • We move fast. With the right candidate, the full process takes less than 10 days.1. Intro call with our Talent Acquisition Lead2. Technical deep-dive with our CTO and founding engineering team3. On-site in Berlin: meet the team and work through a real engineering problem together4. Reference call
Responsibilities
• Design, develop, and deploy across the entire technology stack: from backend services and infrastructure to frontend development; build, test, and ship solutions based on evolving business requirements without sacrificing quality • Take end-to-end ownership of architectural decisions from initial design through to implementation; collaborate with the senior team to refine solutions and ensure they meet real business objectives • Maintain detailed documentation of technical decisions, processes, and system architecture; foster transparency and continuity by sharing insights clearly and consistently across the team • Work directly with the founding engineering team on the core platform that powers Integral's accounting, payroll, and tax services for thousands of SMEs across Germany. • What makes this role special • You are joining a small, senior team where your decisions shape the architecture, not just a ticket in a backlog • Direct collaboration with the CTO & Co-Founder from day one • High ownership: you ship, you learn, you improve • Your work has immediate, visible impact on a product used by SME founders who rely on Integral for their financial operations • The engineering culture is yours to help define.
Benefits
• 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 with December 24th and 31st each counting as half days • Either Urban Sports Club membership, coupons via Hrmony 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 • Fully onsite at our Berlin office: we believe the best work happens when sharp people are in the same room • 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. • The opportunity of a decade to build a category-defining AI-native services leader
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