Senior Backend Engineer (Kotlin, Python, AI/LLM Systems&Agen …, Zaandam

Senior Backend Engineer– You will work on the next generation of digital experiences, including Steijn, our AI‑powered chatbot used by millions of customers. We’re looking for engineers who have practical experience with LLMs, agent systems, or AI‑driven applications, not just an interest in AI, but real hands‑on work.

Responsibilities include:

Design, build, and maintain Kotlin‑based backend services, APIs, and integrations.

Work on systems behind real‑time conversational experiences, including our AI‑powered chatbot.

Integrate LLM capabilities into production systems.

Take ownership from design to deployment and ongoing operation.

Build reliable integrations with existing AH systems and ensure consistent data flows.

Collaborate with Product Owners, engineers, and stakeholders to turn ideas into working solutions.

Contribute to new initiatives, both AI‑driven and traditional backend services.

Ensure systems are scalable, reliable, and maintainable in a complex retail environment.

Team&Office: You will join a team focused on building the backend foundations behind Albert Heijn’s newest digital products. We operate in a hybrid way—both from home and in the office—located next to the train station in Zaandam.

What we offer

An annual salary up to€106 K (including holiday allowance and a flexible bonus), depending on seniority and experience.

A minimum of 20 days paid vacation, with the option to extend by 12.5 days.

Flexible working hours.

Access to a challenging training curriculum– AHTech Academy.

An excellent pension plan where the employer contributes 4.5 × more than the employee.

Travel allowance or an NS‑business card for traveling to and from Zaandam by train.

Attractive discounts on various insurance policies.

10 % staff discount on groceries in all Albert Heijn stores, up to €300 per year.

A free MijnAlbert Heijn Premium membership with many benefits.

A company laptop and telephone.

Qualifications– The recipe for maximum impact

5+ years of experience as a backend engineer.

Strong experience with Kotlin or Java (kotlin experience required).

Willingness to work with Python when needed, especially for AI/LLM use cases.

Hands‑on experience with Spring / Spring Boot.

Experience with cloud platforms such as Azure, AWS, or GCP.

Experience building and maintaining APIs, integrations, and backend services.

Experience with relational and/or NoSQL databases.

A DevOps mindset, comfortable with CI/CD, deployments, and owning services end‑to‑end.

Experience working in Agile product teams.

Strong analytical skills and ability to work in a dynamic, fast‑moving environment.

Comfortable using modern developer tooling such as GitHub Copilot and similar assistants effectively.

AI/LLM Experience (required)

Hands‑on experience building LLM‑based or AI‑driven applications.

Solid understanding of RAG, embeddings, and prompt engineering.

Experience integrating AI capabilities into backend systems in production.

Familiarity with agent‑based systems or orchestration frameworks.

Experience designing or working with tool‑using LLM workflows or multi‑step reasoning systems.

What we ask: Wat we vragen?

Truth‑tech savvy.

A drive to innovate.

The ability to connect.

Collaborative skills.

A good sense of humor.

A customer‑friendly attitude.

We value diversity and aim to build an inclusive team where everyone can thrive.

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