About the Role
We're seeking a highly skilled and proactive Software Engineer to join our team full-time and in person. This is a fantastic opportunity for someone eager to develop features end-to-end and make a substantial impact in a fast-paced, early-stage startup environment.
In this role, you will build product features from conception to deployment, collaborating closely with our CPO and working across the entire tech stack to deliver AI-powered features that drive enterprise adoption. We are hiring for an on-site role in our HQ in Berlin, Germany.
Responsibilities
Design and implement robust backend systems and APIs to power our AI platform
Build end-to-end solutions spanning backend (Node.js), database layers, and frontend integration
Develop and optimize database schemas, queries, and data models for performance and scalability
Implement API endpoints and integrate with third-party services and AI providers
Collaborate with the team on technical architecture decisions and system design
Maintain and optimize our codebase for performance, reliability, and maintainability
Take over "Support Engineer" rotations, in which all members from the engineering team regularly shift their focus on supporting our customers and the customer support team
Required Skills
2–3+ years of proven experience in a software engineering role, building production applications
Strong backend development experience with Node.js, API design, and system architecture
Solid experience working with databases, particularly PostgreSQL, including data modeling and query optimization
API integration experience with REST APIs and modern patterns like tRPC
Comfortable with frontend technologies (JavaScript/TypeScript, React/Next.js) to build full-stack features when needed
Fluent English communication skills for technical discussions and collaboration within the team
Candidates with a stronger background in either frontend or backend are welcome, but you should be comfortable working across the full stack.
Strong Plus
Hands-on experience with Language Models and AI/ML integrations (OpenAI, Anthropic, Google, etc.)
Enterprise software development experience with security and compliance considerations
Experience with Redis for caching and session management
Vector databases and semantic search implementation
German language skills for direct customer communication
A strong sense for user experience (UX) and experience working with design systems
Timeline After Start
Weeks 1-2: Onboarding and small tickets to familiarize with codebase
Weeks 3-6: Mix of smaller and mid-size tickets as well as being "support engineer" (on duty for a week, together with more experienced engineer to handle and fix all ad-hoc, incoming issues from customers)
Week 6+: Work as a Product Engineer, working on building full screens and features end-to-end in our product. While working with our design team and customers to get insights, feedback, etc.
About Langdock
We help organizations drive internal AI adoption through our enterprise-ready AI platform. Our product suite includes AI Chat, Assistants, Search, API, and Workflows - enabling companies to roll out AI internally and build out custom AI use-cases.
We serve over 800 customers, from DAX companies to small startups, including enterprise clients like Merck KGaA, Der Spiegel, GetYourGuide, Babbel, and Personio. Millions of prompts are sent every week through our platform, providing secure, scalable AI solutions that integrate seamlessly with existing workflows.
Tech Stack: Next.js, TypeScript, Node.js, PostgreSQL, Redis, Prisma, tRPC, Tailwind CSS
