Senior Full-Stack Engineer — AI-Driven Ad Platform

AgentMaMa; Stockholms kommun; On-site; SEK 900,000 - 1,300,000; Full time

Job summary

AgentMaMa is building AI agents that audit and optimize e-commerce advertising. We ship fast on a modern, strictly-typed stack and offer ownership from Prisma schema to React components, delivering features to customers within days.

You will design and implement end-to-end features in TypeScript across backend and frontend, extend integration workers, and work on AI-driven decisioning with multiple model providers while keeping data pipelines healthy.

Qualifications

• 5+ years building production web apps with TypeScript on server and client.
• Strong PostgreSQL instincts, schema design and migrations.
• Experience with event-driven architectures and queues.
• Habit of writing tests to move fast.
• Pragmatic product sense: ship focused features.

Responsibilities

• Design and build features across our TypeScript monorepo — tRPC procedures and NestJS services on the backend, React on the frontend.
• Extend our integration workers that sync campaign, product, and analytics data from Google and Meta APIs via Cloud Pub/Sub pipelines.
• Work on the AI audit agent: prompt design, rule evaluation, and the plumbing that turns LLM output into reliable, deduplicated actions — across multiple model providers, not just one.
• Help productionize our in-house prediction models: wiring their output into the rule engine and keeping training data and evaluation pipelines healthy.
• Evolve the data model in PostgreSQL/Prisma and keep migrations, multi-tenancy, and role-based access clean as the product grows.
• Own quality: write Jest tests alongside your code, review PRs, and help keep our CI/CD pipeline to Cloud Run fast and boring.

Skills

TypeScript

Testing

Product sense

Pragmatic mindset

Team collaboration

Problem solving

Tools

NestJS

React

PostgreSQL

Pub/Sub

Docker

Job description

AgentMaMa is building AI agents that audit and optimize e-commerce advertising. We ship fast on a modern, strictly-typed stack and offer ownership from Prisma schema to React components, delivering features to customers within days.

You will design and implement end-to-end features in TypeScript across backend and frontend, extend integration workers, and work on AI-driven decisioning with multiple model providers while keeping data pipelines healthy.