Senior Full-Stack Engineer: Greenfield AI Platform (Nordics)

Epicz Lab AB; Town of Sweden (NY); On-site; USD 150,000 - 230,000; Full time

Job summary

Epicz Lab AB is seeking a senior engineer to build an industrial AI platform from scratch, owning data models, backend services, APIs, AI integration and frontend. This tech-lead‑leaning IC role sets technical patterns for the team and directly shapes product strategy and customer value.

You will work on a modern stack including Next.js, TypeScript, PostgreSQL, and cloud-native tooling, delivering scalable, secure multi‑tenant solutions with evaluated governance and high craftsmanship.

Qualifications

• Five or more years in professional software engineering with senior ownership of systems.
• Track record architecting and shipping complex production web apps.
• Strong TypeScript with React and Next.js on the frontend and Node on the backend.
• Solid PostgreSQL, SQL and ORM skills (Drizzle, Prisma or similar).
• Hands-on experience deploying AI/ML/LLMs in production (RAG, extraction, agentic flows).
• Comfort with cloud-native development and CI/CD (Azure, Vercel, Neon).
• The judgment to set technical direction and the communication skills to lead.

Responsibilities

• Build the platform end to end across data, backend, APIs, AI and frontend.
• Design core systems: LLM-based extraction, entity resolution and LLM-powered query surfaces.
• Architect for scale across AI inference, ingestion pipelines and secure multi-tenant interactions.
• Put LLMs and ML models into production using agentic flows, RAG and extraction.
• Set the technical bar: patterns, code quality, testing and CI/CD that the team builds on.
• Mentor by example and shape the engineering culture.
• Partner with product, design and AI teams, and keep performance and technical debt in check.

Skills

TypeScript

React

Next.js

Node.js

PostgreSQL

SQL

ORMs

AI/ML/LLMs production

CI/CD

Cloud-native

Technical leadership

Tools

Vercel

GitHub Actions

Drizzle ORM

Prisma

Neon

Azure

Dagster

Python

Job description

Epicz Lab AB is seeking a senior engineer to build an industrial AI platform from scratch, owning data models, backend services, APIs, AI integration and frontend. This tech-lead‑leaning IC role sets technical patterns for the team and directly shapes product strategy and customer value.

You will work on a modern stack including Next.js, TypeScript, PostgreSQL, and cloud-native tooling, delivering scalable, secure multi‑tenant solutions with evaluated governance and high craftsmanship.