Job
- Level
- Senior
- Location
- Berlin
- Working Model
- Onsite
- Job Field
- Software, Data
- Employment Type
- Full Time
- Contract Type
- Permanent employment
Job Summary
In this role, you will develop scalable AI features and services, collaborate closely with product teams, and bring prototypes into production while optimizing AI architectures and evaluations.
Job Technologies
Your role in the team
- We are looking for AI Senior Software Engineers to design and build the technical foundation behind our AI-powered products.
- You will be part of the AI Functional Home while working primarily within cross-functional product squads.
- You will collaborate closely with the AI Lead Product Manager, Product Design, Full-Stack and Backend Engineers, and Automation Engineers.
- This role is ideal for an engineer who enjoys moving between AI experimentation and production software engineering - taking an idea from prototype to reliable, scalable customer-facing functionality.
- Design and implement production-grade AI features and services.
- Work with LLMs, multimodal models, embeddings, RAG, agents, and AI APIs.
- Design AI workflows that are reliable, observable, and maintainable.
- Evaluate models and AI approaches against product requirements.
- Entwickle Strategien für Genauigkeit, Halluzinationsreduktion, Latenz und Kostenoptimierung.
- Work directly with the AI Product Manager to turn product requirements into technical solutions.
- Rapidly prototype new AI capabilities and validate technical feasibility.
- Take successful prototypes into production.
- Contribute to technical product decisions and architecture.
- Build evaluation frameworks and testing approaches for AI systems.
- Implement monitoring and observability for AI applications.
- Establish appropriate guardrails and fallback mechanisms.
- Monitor model performance, latency, availability, and cost.
- Help establish reusable AI infrastructure and engineering patterns.
- Act as a senior technical contributor within the AI Product Squad.
- Collaborate with Product, Design, Backend, Full-Stack, and Automation specialists.
- Break complex AI initiatives into executable technical work.
- Mentor other engineers and raise engineering standards across the AI Team.
- Participate in architectural and technical decision-making.
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Our expectations of you
Qualifications
- Strong understanding of APIs, distributed systems, databases, and cloud infrastructure (AWS, GCP, or Azure).
- Strong software engineering fundamentals: testing, version control, code review, observability, and maintainability.
- Ability to operate autonomously in a fast-moving product environment.
- Deliver production-grade AI capabilities.
- Establish reliable AI engineering and evaluation patterns.
- Improve the quality, reliability, and cost efficiency of AI features.
- Build reusable AI components that accelerate future squads.
- Mentor engineers and contribute to the technical direction of the AI Team.
Experience
- 6+ years of professional software engineering experience.
- Significant experience building production software using TypeScript and/or Java Python.
- Hands-on experience building applications with LLMs or other modern AI technologies.
- Experience taking AI prototypes into production.
- Experience with RAG architectures and vector databases.
- Experience building AI agents and tool-calling systems.
- Experience with model evaluation and AI observability.
- Experience with LangChain, LlamaIndex, or equivalent frameworks.
- Experience with multimodal AI.
- Experience building B2B SaaS products.
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What we offer
- Impact: Shape the future of energy-efficient retrofits and make a real contribution to climate action.
- Growth: Be part of a fast-growing startup with huge market potential.
- Team & Culture: Work alongside a highly motivated, experienced team in Berlin (Kreuzberg). Enjoy a vibrant startup culture, regular team events, and a modern workplace.
- Innovation: Flat hierarchies and fast decision-making—your ideas matter from day one.
- Flexibility & Development: Competitive salary, flexible working hours, and tailored personal growth opportunities.
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Topics You Will Work On
Job Locations
About Your Employer
Wallround GmbH
Wallround GmbH, based in Berlin, offers a comprehensive service for the energetic modernization of residential buildings. The company assists owners and investors in the planning and execution of energetic renovations, combining analysis, financing, and coordination of the various trades.
Description
- Company Type
- Startup
- Working Model
- Onsite
- Industry
- Power Sector, Economy
AI Senior Software Engineer
- Location
- Berlin
- Working Model
- Onsite
- Diversity
- Open for all genders
- English Only
- English only required
