Senior Product Engineer

Senior Product Engineer

Integral

MISSION Hilf uns dabei, begeisternde, vertrauenswürdige Produkterlebnisse zu schaffen, die echte Kundenprobleme in den Bereichen Lohnabrechnung, Steuern und Buchhaltung lösen. Übernimm Verantwortung für echte Ergebnisse mit dem richtigen Mix aus Geschwindigkeit und Qualitätsanspruch, um nachhaltigen Mehrwert mit modernsten Tools und Methoden zu liefern. Diese Rolle ist hybrid ausgelegt und erfordert mindestens zwei Tage pro Woche in unserem Berliner Büro, um eng mit dem Team zusammenzuarbeiten. DEINE AUFGABEN Was du tun wirst * Entwicklung und Auslieferung nutzerseitiger Features von Anfang bis Ende: Ideenfindung, technisches Design, Implementierung, Testing, Release und Iteration * Enge Zusammenarbeit mit Product und Design, um komplexe Anforderungen in elegante, skalierbare Lösungen zu übersetzen * Verbesserung der Zuverlässigkeit, Performance und Sicherheit unserer Lohnabrechungs-, Buchhaltungs- und Steuerplattformen * Den Qualitätsanspruch im Engineering hochhalten – durch durchdachte Code Reviews, Pair Programming, Testing und Dokumentation * Features mit Analytics und Logging instrumentieren, Impact messen und schnell iterieren * Verantwortung für kritische Produktbereiche übernehmen – mit einem klaren Fokus auf wirkungsvolle Verbesserungen * Kurzfristige Lieferung und langfristige Architekturinvestitionen in Balance halten * Komplexität reduzieren: kognitive Last für Nutzer und Entwickler gleichermaßen minimieren. Was diese Rolle besonders macht * Hohe Eigenverantwortung – du gestaltest aktiv mit, was und wie wir bauen * Deine Engineering-Entscheidungen beeinflussen direkt die Nutzererfahrung und die Geschäftsergebnisse * Enge Feedback-Schleifen mit Kunden und internen Stakeholdern * Pragmatisches Tempo: bauen, lernen, iterieren, ohne Abstriche bei der Qualität. DEIN PROFIL Erfahrung & Mindset * Mindestens 5 Jahre Erfahrung im Software Engineering mit nachweislicher Erfahrung im Produktaufbau bei einem Startup oder einem stark wachsenden Unternehmen * Nachgewiesene Fähigkeit, Features und Services von Anfang bis Ende zu verantworten und messbaren Kundennutzen zu liefern * Komfortabel mit Ambiguität und Discovery – erfahren in der engen Zusammenarbeit mit Product und Design * Du verwandelst Einschränkungen in Fokus, managst deine eigene Zeit und hinterlässt Codebasen und Teams besser als du sie vorgefunden hast * Du vereinfachst komplexe Systeme, triffst reversible Entscheidungen und erstellst nachvollziehbare Pläne * Du nutzt KI-Coding-Tools wie Cursor, Copilot oder Claude aktiv – und kannst KI-generierten Code prüfen und testen. Fachliche Kenntnisse * Stark in mindestens zwei der folgenden Sprachen: TypeScript/JavaScript, Java, Python * Domain Driven Design: solides Verständnis von Domänendesign und -beziehungen * Testing: Unit-, Integrations- und End-to-End-Tests; CI/CD, Feature Flags und Rollout-Strategien * Observability: Logs, Metriken, Traces; Erfahrung mit SLOs und Incident Response * Security-Grundlagen: AuthN/AuthZ, Secrets Management, Threat Modeling, sichere Coding-Praktiken. PROZESS Wir arbeiten schnell: mit den richtigen Kandidat:innen kann der gesamte Prozess in weniger als zwei Wochen abgeschlossen werden. 1. Intro Call mit unserem Talent Team 2. Deep Dive Interview mit unserem CTO & Mitgründer 3. On-site Coding Interview in unserem Berliner Büro mit dem Engineering Team 4. Gründergespräch mit unserem CEO & Mitgründer UNSER ANGEBOT * Überdurchschnittliches Gehalt * Direkter Draht zu den Gründern: kein Filter, keine Warteschlange, kein Komitee * Vollständige Autonomie über das, was du baust; wir messen eingesparte Stunden * Die besten Tools, keine Fragen gestellt: Claude Max, Cursor, OpenAI, was auch immer nächste Woche erscheint * Interne Tools und Ressourcen, die speziell für die Entwicklung agentischer KI im großen Maßstab entwickelt wurden, lies mehr darüber, wie wir arbeiten: engineering.integral.de * 28 Urlaubstage pro Jahr, plus halbe Tage am 24. und 31. Dezember * Urban Sports Club Mitgliedschaft oder Deutschlandticket, deine Wahl * Laptop deiner Wahl: MacBook Pro oder Windows * Betriebliche Altersvorsorge (bAV) * Modernes Büro im Herzen von Berlin Mitte, direkt neben dem Mauerpark * Wöchentliche Teamlunches auf unsere Kosten, Büro-BBQs und ein Dinnerbudget für späte Abende nach 20 Uhr * Ein Team von 50+ (und wachsend!) ambitionierten, diversen Menschen, 20%+ Ex-Gründer, die gemeinsam lernen und aufbauen

Senior Product Engineer

Vanilla Steel

YOUR MISSION We are a Berlin-based startup transforming how industrial materials are bought and sold across Europe. One of the oldest industries in the world still runs on Excel, PDF and email. We are replacing that with AI that runs the buying and selling workflow end to end, increasing liquidity, speeding up transactions and reducing waste for hundreds of steel and metal distributors.  We have strong early traction, real enterprise customers and committed investors. We are a lean, technical team scaling our enterprise pilots and building the AI infrastructure underneath them. Your job as Senior Product Engineer is to make sure we deliver on that traction and stay ahead. You partner closely with Co-founder Simon, who owns sales; you own that we ship, that enterprise customers succeed, and that the product stays in front. This is a senior, hands-on role with three pillars. 1. Build and ship with AI * Ship production software using AI as a force multiplier — prototypes, integrations, customer-facing flows — and get them live, not just specified. * Move our AI from assisting people to running the buying and selling workflow as autonomous agents. * Integrate our pipeline deep into customer systems and ERPs (SAP, Odoo, Microsoft Dynamics), and design for fast onboarding so a new customer reaches value in days, not months. * Our stack: Python, FastAPI, Pydantic AI, Pydantic Logfire, JavaScript/Node, React, GCP, Kubernetes. You won't be expected to master all of it on day one, but you should be comfortable navigating it with AI tooling. 2. Lead technical communication with enterprise customers * Own the technical relationship with three to five enterprise customers: run the discovery workshops, scope the work, run first-line UAT, and steer executive, procurement and IT conversations. * Translate customer reality into clear build decisions and engineering reality into clear customer expectations. Hold the line on scope when a request will not move the metric that matters. * Represent the product credibly to senior stakeholders, and to investors when a customer also sits on our cap table. 3. Help build the product org * Drive the shipping cadence: a weekly or biweekly release rhythm with engineering, and sequence delivery against engineering capacity with our Head of Tech. * Make the strategic product calls — what we build next, and what we deliberately do not. * As we scale enterprise customers, help grow how the team works and the product function around you. YOUR PROFILE You are a builder who ships with AI and can run an enterprise customer relationship and help shape how we build. Two non-negotiables: technical capability and product sense. Everything else sits behind those. * Excellent written and verbal communication in English and in German (C1 or C2 must have, native not required). You can run a technical workshop with a German industrial customer end to end. * Berlin-based or willing to relocate. The role also includes regular travel to customer sites in Central Germany (~2–3 days per month). * 5+ years building product, with at least 2 years in genuinely technical roles (engineering, technical PM at a real engineering company, solutions architect, forward-deployed engineer). * Deep LLM/AI experience: you build and ship real software with LLMs and agents in production, not just prototype or chat with them. You can walk us through something you shipped and how you built it. Bonus if you have shipped an agentic or autonomous system. * AI coding tools: you use Cursor, Claude Code or comparable as your primary development environment - not occasionally, but as the way you build. This is how you ship independently without engineering support. * Strong technical instincts: you read code, evaluate an architecture, and hold your own in a design review with engineering. * First-line UAT discipline: you have personally signed off (or rejected) enterprise releases and can describe the framework you used. * Comfortable owning several enterprise customers in parallel without dropping balls, and pushing back on scope when needed. * Able to simplify complexity and make fast, sound decisions under pressure. Nice-to-have: background in an AI-first company; ERP integrations (SAP, Odoo, Microsoft Dynamics) or procurement / order-management workflows; early-stage or founding-engineer experience, industrial B2B, metals, supply chain or manufacturing experience. WHY US? * Ownership of named enterprise accounts, judged on outcomes rather than hours. * Direct technical impact: you see what you ship in production within weeks. * Senior co-founders who are technical operators, not pitch-deck founders. Decisions happen fast. * Competitive base, performance bonus, and meaningful equity at a Series A company. * Regular travel to customer sites (mainly Central Germany). * Subsidised Urban Sports Club membership and Deutschlandticket. * Hybrid work format, office in the heart of Prenzlauer Berg, Berlin. * Regular team events, company breakfasts and Friday drinks.

Senior Product Engineer - iOS/Swift

Qonto

Our mission and customers: We are creating the freedom for SMEs to succeed by delivering Europe's leading finance workspace with banking at its core, augmented by financial tools. We are proud to be rated 4.8 on Trustpilot, based on 55,000+ reviews. Our culture puts customer satisfaction at the core of what we do, as proven by our Net Promoter Score of 75 (more about our culture here). Our journey: Founded in 2017 by Alexandre and Steve, Qonto has grown to 1,600+ Qontoers serving over 600,000+ customers across 8 European countries. We have been profitable since 2023, and we are just getting started. Our beliefs: We hire for skills and potential. With 80+ nationalities, 45% women, of which 56% of women in our leadership team, diversity isn't a program; It's who we are. We've built a discrimination-free hiring process because the best teams are built on merit. AI at Qonto: AI is deeply embedded in how we work (here) - Every Qontoer gets unlimited access to the best AI tools. We want people who experiment without waiting for permission, push AI beyond the obvious, know when to trust it, and when to question it. ------------------------------------------------------------------------------------------------------ Location: You can choose to work at Qonto as long as you're living in (or willing to relocate to) either Germany, France, Italy, Serbia, Portugal, or Spain.   Mission   Join us as an iOS Engineer and help us build the most intuitive mobile banking experience for European businesses. You'll be crafting features that directly impact the daily financial operations of over 600,000 SMEs across Europe, making their business finance simpler and more efficient.   As an iOS Engineer at Qonto, you will:   • Craft cutting-edge financial features: Work on critical architectural and UI features that will directly impact our end users. • Foster meaningful collaboration: Work closely with back-end teams, designers, and product managers to create a unified vision. • Solve real-time challenges: Tackle real-time synchronization issues and spearhead new initiatives. • Champion quality: Maintain an exceptional level of quality by implementing continuous refactoring and unit testing to consistently enhance the codebase.   What you can expect   • You'll be building for Europe's fastest-growing business banking market, with 600K+ clients across multiple countries and ambitious expansion plans • Work in an environment that prioritizes quality, comprehensive code reviews, component approach and continuous refactoring as standard practice • Contribute to a fully Swift-based app using MVP and Coordinators architecture, with modern CI/CD through GitHub, Firebase, and Bitrise • Access to expert mentorship, Tech Weeklies & Monthlies, and conference opportunities to stay at the forefront of iOS development   Our methodology, the Qonto Way We value upfront technical design, team reviews, and smart slicing, quality drives the velocity our customers need; Our org assigns one team lead per project across stacks, giving your team a clear mission and full autonomy on how it operates; Our lean toolbox, Kaizen, PDCA, lets you monitor and drive continuous improvement collaboratively with your peers and manager; Each engineer gets access to Cursor or Copilot, and we want people who use AI to raise the bar, not just to go faster.   Your future team As an IOS Engineer, you will join one of Qonto's squad teams, each organised around a clear project mission, with one team lead and full ownership of a product scope. You'll be part of a 140 mobile engineering community within a 500 Product Engineering department, working in focused teams of 5 to 10 people alongside Product, Design, and peers from Frontend and Backend.   Our stack & practices Our app is 100% Swift, built on MVP & Clean Architecture with 35+ independent modules. We use the Coordinator pattern for scalability, and all new screens are built in SwiftUI (MVVM) with async/await — 80+ screens already migrated. Project generation and build optimization run on Tuist. CI/CD covers GitHub Actions, Bitrise, Firebase Test Lab, Sonar, and Fastlane. We take technical excellence seriously: 30,000+ unit tests, 450+ snapshot tests, SwiftyMocky for mock generation, and LLMs integrated into our dev workflow. Our modular architecture (32 reusable modules + centralized design system) ensures fast builds, clear ownership, and safe iterations. Want to know more about our mobile performance indicators? Read this. About You   • iOS Expertise: Proven experience as a Mobile engineer with strong Swift skills and deep understanding of the iOS ecosystem, SDK, and development lifecycle • Quality-driven development: Strong commitment to best practices, including unit testing (XCTests, FBSnapshots), Clean code / SOLID principles, and organized workflows • Problem-solving approach: Pragmatic and solution-oriented approach to engineering challenges, with ability to deliver tangible value in a fast-paced environment • Collaborative spirit: Excellent communication skills, fluent english and experience working effectively in cross-functional teams with both technical and non-technical colleagues • Growth mindset: Curious and proactive developer who thrives on learning new technologies and contributing to a product serving hundreds of thousands of users