Senior FastAPI AI Backend Engineer

Newcode.ai; Oslo; On-site; NOK 900,000 - 1,300,000; Full time

Benefits offered by this job

Flexible, English-speaking environment

Job summary

Newcode.ai is seeking an experienced backend engineer to own the API and data pipelines that power our AI features in production Oslo. You will design and run the orchestration between our product and language models, handling retrieval over large document sets, streaming results, and long-running jobs with reliability.

The role focuses on robust, secure, scalable backend systems, with exposure to RAG, tool-calling, and embeddings.

Qualifications

• 7+ years building production-grade backend systems.
• Ability to design reliable, scalable systems with security in mind.
• Experience with LLM-powered architectures (RAG, tool-calling, agents) or eagerness to learn.
• Comfort in a startup, willingness to make and revisit decisions.
• Experience with async and distributed workloads.

Responsibilities

• Design and build the APIs and services our products run on.
• Work on the AI plumbing: retrieval, orchestration, tool-calling, response streaming, and the evals that tell us whether the output is any good.
• Keep async and distributed work reliable: document ingestion, embeddings, and long-running jobs on Redis.
• Build integrations with the systems clients already use, like email and document stores, and ensure they hold up under load.
• Take data security and isolation seriously, since clients hand us confidential material.

Skills

Python

Backend development

Tools

FastAPI

PostgreSQL

SQL

Redis

Job description

Newcode.ai is seeking an experienced backend engineer to own the API and data pipelines that power our AI features in production Oslo. You will design and run the orchestration between our product and language models, handling retrieval over large document sets, streaming results, and long-running jobs with reliability.

The role focuses on robust, secure, scalable backend systems, with exposure to RAG, tool-calling, and embeddings.