Senior Full-Stack Engineer: AI‑Driven Web & Architecture

DTU — Technical University of Denmark; København; Hybrid; DKK 750,000 - 950,000; Full time

Benefits offered by this job

Company pension

Health insurance

Job summary

Signifly in Copenhagen is seeking a senior full‑stack engineer to join our Tech team. You’ll shape digital products with a stack centered on TypeScript, Next.js and React, extending into backend services and AI-driven features.

You’ll work across Signifly's Copenhagen, Montreal, London and Toronto offices, tackling challenging client projects and driving agentic engineering. You’ll lead by example on craft, code quality and best practices, while exploring new AI tools to ship faster and smarter.

Qualifications

• Solid experience as a senior full-stack developer with modern TS/Next.js/React and backend work.
• Hands-on experience with AI-assisted and agentic development and related tools.
• Ability to propose smart technical solutions addressing real-world client problems.

Responsibilities

• Shape, build, and improve digital products end to end from frontend to backend and integrations.
• Inspire adoption of agentic engineering and share learnings with the team.
• Build AI-powered features and agentic systems into client products.
• Take technical ownership on client projects including architecture decisions.
• Lead by example on development practices and cross-team collaboration.
• Stay ahead of trends and bring them into the team to deliver top services.
• Support Signifly's various teams with deep tech knowledge.

Skills

Full-stack development

TypeScript

Next.js/React

Backend APIs

AI-assisted development

Agentic tools

Tools

Claude Code

Job description

Signifly in Copenhagen is seeking a senior full‑stack engineer to join our Tech team. You’ll shape digital products with a stack centered on TypeScript, Next.js and React, extending into backend services and AI-driven features.

You’ll work across Signifly's Copenhagen, Montreal, London and Toronto offices, tackling challenging client projects and driving agentic engineering. You’ll lead by example on craft, code quality and best practices, while exploring new AI tools to ship faster and smarter.