Senior Full-Stack Engineer: Build AI-Driven Ad Platform

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

Job summary

AgentMaMa is hiring a senior engineer to design and build features across a TypeScript monorepo, connecting backend NestJS services with a React frontend. You will extend data pipelines from ad platforms and contribute to AI audit agents, while productionizing in-house prediction models and maintaining clean Prisma-based data models.

Join a small, fast-moving team reporting to the CTO, delivering end-to-end ownership from schema to customer impact.

Qualifications

• 5+ years building production web applications with strong TypeScript on both server and client.
• Solid relational database instincts — PostgreSQL, migrations, and query performance.
• Experience with event-driven or queue-based architectures (Pub/Sub, SQS, Kafka) and failure modes.
• Habit of testing and shipping features quickly through reliable tests (Jest).
• Pragmatic product sense; prefer delivering focused features over deep abstractions.

Responsibilities

• Design and build features across our TypeScript monorepo — tRPC procedures and NestJS services on the backend, React on the frontend.
• Extend integration workers that sync data from Google and Meta APIs via Cloud Pub/Sub pipelines.
• Work on the AI audit agent: prompt design, rule evaluation, and turning LLM output into reliable actions across providers.
• Help productionize in-house prediction models and wire output into the rule engine.
• Evolve the data model in PostgreSQL/Prisma, manage migrations, multi-tenancy, and access control.
• Own quality: write tests (Jest), review PRs, and maintain CI/CD to Cloud Run.

Skills

TypeScript (server & client)

PostgreSQL experience

Testing / Jest

Tools

NestJS

Fastify

tRPC

Zod

Prisma

PostgreSQL

Docker

GitHub Actions

pnpm

Job description

AgentMaMa is hiring a senior engineer to design and build features across a TypeScript monorepo, connecting backend NestJS services with a React frontend. You will extend data pipelines from ad platforms and contribute to AI audit agents, while productionizing in-house prediction models and maintaining clean Prisma-based data models.

Join a small, fast-moving team reporting to the CTO, delivering end-to-end ownership from schema to customer impact.