AI-First Tech Lead (m/w/d) — Plattform & Engineering

JACOB Elektronik

ÜBER UNS: In der Welt des IT-Handels gehen wir neue Wege: Das größte Sortiment, persönliche Beratung und tiefgehende Lösungskompetenz – aus einer Hand.   Wir arbeiten mit über 300 Mitarbeitenden deutschlandweit und mit einem der größten Onlineshops in Deutschland. Unser umfassendes Hersteller-Portfolio und unsere gebündelte Fachexpertise stellen dabei sicher, dass wir immer die richtige Lösung für individuelle Anforderungen bieten können.   Seit der Gründung im Jahr 1990 ist JACOB weit gekommen: Im Laufe der Jahrzehnte haben wir uns von einem regionalen Ladengeschäft in Karlsruhe zu einem bedeutenden IT-Dienstleister für Unternehmen entwickelt. Unser fester Wille, immer wieder innovative Ansätze zu suchen, hat diese Entwicklung erst ermöglicht.   Und diese Kreativität, gepaart mit Fachkompetenz, nehmen wir in die Zukunft mit. Wir möchten uns weiterentwickeln und dabei beibehalten, was uns ausmacht. Gehst du diesen Weg mit uns? WIR SUCHEN: AI-First Software Engineer (m/w/d) der Claude (oder vergleichbare Modelle) als zentralen Mechanismus zur Softwareentwicklung nutzt - und der gleichzeitig genug klassisches Programmierhandwerk mitbringt, um KI-Output kritisch beurteilen zu können. DEINE AUFGABEN: * Du nutzt Claude (und vergleichbare Modelle) als Standard für Code, Tests und Dokumentation * Du übersetzt fachliche Anforderungen in präzise Prompts und orchestrierst daraus vollständige Lösungen - APIs, Services, Integrationen, Automatisierungen * Du veredelst KI-generierten Code zu produktionsreifem Stand: Tests, Security, Wartbarkeit, Architektur * Du entwickelst in C#, Go oder PHP/Symfony - je nach Kontext * Du baust wiederverwendbare Prompt-Strukturen, Workflows und AI-Templates für unsere Engineering- und E-Commerce-Anwendungsfälle * Du arbeitest eng mit Fachbereichen zusammen und shippst regelmäßig in Produktion DEIN PROFIL: Welche Skills du mitbringen solltest:  * Du hast ein abgeschlossenes Studium der Informatik, Mathematik oder eine vergleichbare technische Ausbildung * Du hast mindestens 2 Jahre Praxiserfahrung in der Softwareentwicklung, davon einen deutlichen Anteil klassisch von Hand geschrieben. Du kannst guten von schlechtem Code unterscheiden - weil du es selbst gemacht hast * Du bringst solide Erfahrung in mindestens einer unserer Sprachen mit (C#, Go, PHP/Symfony) * Du hast erste echte Projekterfahrung mit Claude Code, Codex, Cursor oder vergleichbaren Tools - nicht nur mit Demo-Tutorials * Du verfügst über grundlegende Kenntnisse in Softwarearchitektur, APIs und relationalen Datenbanken (MySQL/MSSQL) * Du hast Erfahrung mit Docker und erste Berührungen mit CI/CD * Du kannst KI-Output kritisch beurteilen und Probleme darin selbst beheben * Du sprichst fließend Deutsch (mind. B2) und gutes Englisch * Du arbeitest gerne onsite in Karlsruhe (2 Tage Vor-Ort-Pflicht) Was dich als Persönlichkeit auszeichnet: * Du willst Sachen fertigstellen und in Produktion sehen - nicht endlos verfeinern * Du bist neugierig auf KI als Arbeitsweise und willst sie konsequent in deinen Alltag einbauen * Du hinterfragst Prozesse konstruktiv, ohne sie zum Selbstzweck zu machen * Du übernimmst Verantwortung für deine Aufgaben, statt sie zu zergliedern * Du siehst Legacy Code als Ausgangspunkt, nicht als Ausrede Nice to have:  * Erfahrung im E-Commerce-Umfeld * Berührungspunkte mit Klaviyo, CDPs, Marketing-Automation * Kubernetes, AWS, Terraform, Camunda/BPMN, xUnit.net WIR BIETEN: Bei JACOB erwartet dich ein modernes Arbeitsumfeld, das dir Freiraum für eigene Ideen und neue Herausforderungen bietet. Das heißt konkret: * Du profitierst von unseren Benefits: Mitarbeiterrabatt auf unser riesiges Produktsortiment, JobRad, Betriebliche Altersvorsorge, Arbeitsplatzbrille, freie Getränke und Ticket-Restaurant  * Klar, dass du modernes IT-Equipment zum Arbeiten erhältst  * Eine Engineering-Realität, in der KI tatsächlich der Standard ist - nicht ein Innovationsprojekt * Hoher Gestaltungsspielraum auf Architektur-, Tooling- und Prozessebene * Direkte Wege zu Geschäftsführung und allen Fachbereichen * Unser People Development hilft dir, dich in deiner Rolle und als Persönlichkeit weiterzuentwickeln  * Das DU gehört zu uns: Von Anfang an - beim Bewerbungsgespräch bis zum Austausch mit der Geschäftsführung  * Kaltes Wasser? - Gibt's bei uns nicht. Du wirst top vorbereitet und von deinen Kolleg:innen intensiv in deinen abwechslungsreichen und spannenden Aufgabenbereich eingearbeitet INTERESSIERT? Dann sende uns deine Bewerbungsunterlagen  (Lebenslauf, Gehaltswunsch, Eintrittstermin)  und 3–5 Sätze zu dem letzten realen Projekt, das du mit Claude Code (oder vergleichbaren Coding-Agents) umgesetzt hast - was hat funktioniert, was nicht, und was du daraus mitgenommen hast. Lieber ehrlich als poliert.  Rückfragen vorab? Hierfür steht dir Ervin Kurtic von People & Talent unter Tel. 0721/94176-2700 gerne zur Verfügung. ÜBER UNS * Velocity statt Ritual: Anforderungen werden in Tagen umgesetzt. Daran arbeiten wir konsequent weiter * Funktion vor Politur: 90 % funktional und live ist mehr wert als 100 % perfekt im Code-Review * Designer statt Coder: KI generiert. Du verstehst, was sie tut, designst die Systeme drumherum und bewertest die Qualität * Wenig Meetings: Klare Verantwortung, kurze Wege, kein PO/PM-Theater

DEPT

Head of UX  (d/f/m) Hamburg, Berlin, Hybrid DEPT® is a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, our 4,000+ specialists deliver growth invention services across Brand & Media, Experience, Commerce, CRM, and Technology & Data. We’re 50|50 tech and marketing, partner-led, and first to move. Clients include Google, Lufthansa, Meta, eBay, and OpenAI. We have been certified B Corp and Climate Neutral since 2021. JOB PURPOSE This role is part of our Experience & Engineering team in the DACH region. We combine technology and experience design to create emotive yet conversion-focused CX platforms, Apps, Online Shops and Design systems at scale and speed. Our specialty is digital experiences and communication that change perceptions and shape new behaviours to make a difference in the market. You will lead and further develop our DACH UX practice across the entire value chain — from research to delivery. You will balance craft excellence, delivery quality, and operational health, while shaping a strong and future-ready UX department. You will also lead international project teams for ambitious brands to create user-centered experiences that drive measurable growth. WHAT YOU’LL DO: * Driving innovation and delivering excellence: As the UX Lead for key accounts or in new business, you’ll set the standard for user-centric design and ensure that our work delivers strategic business impact. * Delivery accountability: You are accountable for the department’s delivery excellence. You not only monitor quality but also collaborate with the EMEA UX leadership team to develop new capabilities and processes that ensure we stay ahead of the competition. * Operational accountability: You proactively manage the department’s operational health as well as the client and team satisfaction. * Foster cross-functional and international alignment: You will foster close collaboration with international teams across the EMEA region as well as with other crafts such as Strategy, Visual Design, Content and Tech, ensuring that our local UX practice does not operate in isolation but serves as a driving force for collective growth. * Champion thought leadership: You will act as an internal and external voice, showcasing our pioneering work through speaking engagements and industry contributions to build our reputation as a growth innovation company. WHAT YOU BRING: * Work experience: Over 15 years of experience in UX and product design, combined with in-depth expertise in complex digital ecosystems and fast-paced agency environments, with proven experience working with large, international brands and complex stakeholder environments. While experience in e-commerce isn't mandatory, it would be a great advantage. * Portfolio: A proven track record across the entire UX value chain—from in-depth user research and strategic planning to hands-on concepts and iterative testing. Your portfolio demonstrates high-impact results and measurable business growth.  * Leadership: You have over 10 years' experience in people leadership. Managing and mentoring high-level talent, such as Leads, Principals and Associate Directors, would be an added bonus. * Operational Excellence: You know how to handle urgent requests or escalations with a performance- and solution-oriented approach. * Tech and AI savvy: Not only are you curious about digital trends, AI and new technologies, you are also committed to incorporating relevant innovations into your work. * Communication and influence: The ability to transform complex UX strategies into persuasive pitches that convince senior stakeholders and establish the trust required for long-term partnerships. Full professional proficiency in both German and English (C1 level) is mandatory.  WE OFFER: * Flexible, hybrid working policy (1-2 days at the office, depending on location); * Company pension scheme. * Occasional breakfast/lunch at the office, Smoothie Tuesdays. * Stay happy and healthy with a contribution to your health through the OpenUp platform; * €50 personal monthly allowance via our dedicated benefits apps for use across daily expenses and lifestyle perks. * Future Bens - Exclusive access to sustainable, healthy products at attractive deals. * Social events, plenty of opportunities to connect with colleagues through organised activities and celebrations. * A reputation for doing good. DEPT® has been a Certified B Corp® since 2021 and named ‘Agency of the Year’ at both The Lovies and The Webby Awards. * Awesome clients. Whether big or small, local or global — at DEPT® you’ll get the opportunity to work with clients of all sizes and across all industries. And we celebrate all of our successes together! * The opportunity for possibility. We want to enable you to do what you do best and help you develop your skills further with training, development and certifications. * Global annual DEPT® Cares Month in which employees come together and donate their skills to support local charities. WHY DEPT®? We are a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, we create what is next by pioneering ideas, acting fast, and moving further because standing still just is not in our DNA. We are drawn to people who stay curious, move with intent, and never stop inventing. Our culture runs on three values: better together, relentlessly curious, and get sh*t done. It is how we work, how we grow, and how we make things that matter. At DEPT®, you will find the freedom to explore, the space to collaborate, and the trust to make a real impact for our clients, for each other, and for the world we are helping to build. DIVERSITY, EQUITY & INCLUSION  At DEPT®, we take pride in creating an inclusive workplace where everyone has an equal opportunity to thrive. We actively seek to recruit, develop, nurture, and retain talented individuals from diverse backgrounds, with varying skills and perspectives. Not sure you meet all qualifications? Apply, and let us decide! Research shows that women and members of underrepresented groups tend not to apply for jobs when they think they may not meet every requirement, when in fact they do. We believe in giving everyone a fair chance to shine. We also encourage you to reach out to us and discuss any reasonable adjustments we can make to support you throughout the recruitment process and your time with us. Want to know more about our dedication to diversity, equity, and inclusion? Check out our efforts here.

Langdock

HELP US CHANGE THE WAY THE WORLD WORKS BUILD SOMETHING THAT MATTERS. Langdock exists to change the way the world works, bridging the gap between what technology can do and what people actually do with it. We bring all leading AI models into one secure, model-agnostic platform and make them usable across entire organizations. Over 6,000 companies use our platform every day, from fast-growing startups to some of Europe's largest enterprises. Their employees open Langdock to draft strategies, analyze documents, or automate workflows - helping them to work smarter, think more creatively, and reach their full potential. THE ROLE Platform Engineers at Langdock work on shared backend systems that many product features depend on. This includes the AI engine, queues, document processing, integrations, code execution, authentication, and billing. The job is to make these systems reliable and understandable enough that other engineers can build on them. That means designing clear APIs, choosing the right data models, handling failure cases, writing tests for important invariants, adding useful observability, and keeping abstractions simple enough to maintain. Typical problems include deciding which parts of a long conversation to keep in context, retrying background jobs without running the same side effect twice, handling model-provider failures during streaming responses, refreshing integration tokens before they expire, and enforcing tenant boundaries in shared services. WHAT YOU WILL WORK ON Examples of the kind of systems Platform Engineers own: * The AI engine at the core of the platform. It handles the prompts users send through Langdock and abstracts over providers such as OpenAI, Anthropic, Google, Azure, Bedrock, Mistral, and open-source models. The work includes prompt caching, routing, failover across model deployments, and normalizing provider-specific behavior behind a stable internal interface. * The workflow runtime. Workflows need to execute reliably across agent steps, conditions, loops, structured-output extraction, human-in-the-loop pauses, and actions across hundreds of integrations. The platform work is about making that execution model predictable, observable, and safe to extend. * Context-window optimization. Long conversations, uploaded files, and tool calls need to stay correct while model costs stay under control. This is one of the most cost-sensitive parts of the platform. * A code execution service for running untrusted customer code. Today this means JavaScript in some places, but the direction includes broader execution environments such as Bash. The hard part is clear isolation: secrets, filesystem access, outbound network access, and tenant boundaries need to be controlled explicitly. * A flexible integration layer for connecting Langdock to external services. Most integrations are standard REST APIs, but the platform also needs to support industry standards for tools and agents, including Model Context Protocol (MCP) and agent-to-agent (A2A) communication. You will pick up a platform area over time and can shape where it goes next. TECH STACK * TypeScript across a Turborepo monorepo * Next.js, React, and Tailwind on the front end * Node.js services and workers on the back end * PostgreSQL with Prisma; Redis with BullMQ * A multi-provider model abstraction across OpenAI, Anthropic, Google, Azure, Bedrock, Mistral, and open-source models * Sandboxed Node.js for code execution * Multi-cloud storage abstraction over AWS S3, Azure File Share, and GCS * Terraform for infrastructure orchestration * Kubernetes for workloads that need portable deployment across cloud providers * Linear for ticket management * Datadog and Sentry for observability You should be familiar with most of this. We trust you to pick up the rest quickly. HOW WE SHIP * Small temporary squads of 2 to 3 engineers around a topic. Squads form, ship, and dissolve. * Every change is linked to a Linear ticket and ships via PR. CI runs lint, tests, and AI review. * We deploy continuously to production. * We use AI tools heavily in engineering. You have freedom in the tools to use (eg. Cursor, Claude, Codex). We are building a strong harness that allows engineers to move fast while shipping high quality software. * We are building a strong operating system around AI-assisted shipping: clear ticket context, focused branches, AI review before human review, explicit rollout notes for risky changes, and production verification after release. * The engineer who ships a change owns it in production. If something breaks, you lead the fix. WHAT WE ARE LOOKING FOR * 3 to 6 years of experience building back-end systems that handle real load: queues, caches, databases, streaming pipelines, distributed schedulers. You can talk through failure modes and tradeoffs from systems you have actually run. * Strong in TypeScript and Node. Opinionated about API design, abstractions, and where boundaries should sit. * Some infrastructure experience: Terraform, Kubernetes, cloud deployments, networking, or operating services across AWS, Azure, or GCP. * Very driven. You have high standards for yourself, move fast without needing to be pushed, and want to do the best work of your career. * Working knowledge of the LLM ecosystem at a technical level: context windows, tool calling, streaming protocols, provider quirks, prompt caching. * Habit of adding metrics, traces, and structured logs because you have been on call before and know you will need them. * Security-first mindset. Multi-tenant data isolation is a design constraint, not a postscript. * Heavy user of AI tooling in your own development workflow, with opinions on what works and what does not. We are looking for people who are already compounding their output with AI. WORKING HERE We work from one office in Berlin, Greifswalder Str. 212. Engineering is fully in person; we believe the hardest problems get solved faster at a whiteboard than in a Slack thread. Most engineers start around 8:30. Lunch and dinner are together when people stay. Running and gym are part of the routine for many of us. COMPENSATION Top of market, transparent levels, all roles include equity. Levels are tied to scope, not negotiation or years of experience. We narrow down the range early in the process. NEXT STEPS If this sounds like your kind of work, we would like to meet you. We move fast. Most processes complete within two weeks.