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Tech Stack
Tools & technologiesAWSCloudDockerERPKubernetesPostgresPythonRedisTerraform
About the role
Key responsibilities & impact- As an AI Backend Engineer, you will build the technical backbone of our Decision Intelligence platform.
- You develop scalable backend services that bring our forecasting and optimization models, agentic workflows, and our semantic data layer into productive use.
- You work AI-first: Claude Code or similar CLIs, MCPs, and custom skills are your standard toolkit.
- You think not only in terms of endpoints and databases, but in customer value, product impact, and adoption & and always eager to strengthen the system and not only solve the task at hand.
- You design, build, and operate scalable backend services in Python with FastAPI and pydantic that productively support agent workflows, forecasting and replenishment.
- You design clean APIs between the platform, agents, ML models, frontend, and customer systems (ERP, BI, planning tools) and ensure robustness and observability.
- You build and extend our semantic data layer as the foundation for accurate forecasts and precise responses from our agents: modeling in PostgreSQL, transformations with dbt, pipelines, caching, and retrieval.
- You integrate LLM and agent systems deeply into the backend : tool use, function calling, RAG pipelines, eval frameworks for LLM outputs, guardrails, and production deployment.
- You prototype quickly and close to the user : you put new ideas into the hands of FDEs and customers in days rather than weeks, gather early feedback autonomously, iterate closely on the actual workflow, and decide based on real usage what is worth hardening and rolling out.
Requirements
What you’ll need- 2 to 5 years of professional experience as a Backend, Software, or AI Engineer in a product-oriented environment - ideally in a product or SaaS context, startup experience welcome.
- Solid backend foundation : Python with FastAPI and Pydantic, clean API design, asynchronous programming, PostgreSQL and Redis, containerization with Docker, and experience with CI/CD pipelines.
- Strong product mindset : you don't just ask "How do I build this?" but "What are we building this for, for whom, and how will we know it has impact?". You think in terms of users, adoption, and chains of impact, not just tickets.
- Practical experience with LLMs and agent systems : prompt engineering, tool use/function calling, RAG, eval frameworks, and production deployment.
- Experience with cloud infrastructure , ideally AWS, as well as a good feel for Kubernetes and Infrastructure-as-Code with Terraform - you don't need to master everything in your sleep, but you should be able to move confidently in this space.
- High level of ownership, appetite for ambiguity, and motivation to continuously develop yourself in backend engineering, agentic engineering, and your product perspective.
- Clear, compelling communication , both technical and non-technical, with low ego.
- Fluent English, bonus: native German or C1 level.
Benefits
Comp & perks- You receive the hardware setup you need to unlock your full potential.
- You use your personal learning budget (€2,000 per year) to continuously develop yourself.
- Flexible working hours: you work when it suits you best.
- You receive a mobility budget for sustainable transportation and reduced CO₂ emissions.
- A rich selection of snacks and drinks is available to you free of charge in the office at all times.
- You get direct access to frontier AI developments and learning sessions in close exchange with our product development.
- You complement a highly qualified and motivated team of paretoneers who get things done and have fun doing it.
- You take part in our quarterly Hacky Days, full of creativity and new ideas.
- We regularly host professional and social team events, both online and on site.
- If you are a member of the paretos Dog Club, you are welcome to bring your four-legged friend to the office.
- In the office, you can prove your barista skills and have coffee conversations with other paretoneers. Maybe you'll be crowned "paretos Office Barista of the Year" at our Christmas party.
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
PythonFastAPIPydanticPostgreSQLRedisDockerCI/CDasynchronous programmingprompt engineeringInfrastructure-as-Code
Soft Skills
product mindsetownershipadaptabilitycommunicationuser-focused thinkingfeedback iterationmotivation for self-developmentlow ego