Senior Full-Stack Engineer: AI-Powered Web

Signifly; København; On-site; DKK 900,000 - 1,200,000; Full time

Benefits offered by this job

Yearly team trip (paid)

Catered lunch

Drinks on Fridays

Office in Vesterbro

Paid equipment

In-office massage

Conferences travel

Health insurance

Job summary

Signifly is seeking a Senior Software Engineer to join our Tech team in Copenhagen. You'll work as a senior full-stack developer, shaping how we build with AI across client digital products and internal tooling.

In this role you'll own architecture decisions, write robust TypeScript/Next.js/React code, and collaborate with teams across our Copenhagen, Montreal, London and Toronto offices to deliver high-quality software that scales with client needs.

Qualifications

• Solid experience as a senior full-stack developer
• Strong with TypeScript, Next.js and React
• Backend development (Node.js, APIs, databases)
• Hands-on AI-assisted/agentic development experience
• Experience building AI-native APIs

Responsibilities

• Shape, build and improve digital products end to end across frontend and backend
• Lead technical ownership: architecture decisions and direction
• Mentor teammates and promote good engineering practices
• Collaborate with global teams across multiple offices
• Adopt agentic engineering practices and push AI-powered features

Job description

Signifly is seeking a Senior Software Engineer to join our Tech team in Copenhagen. You'll work as a senior full-stack developer, shaping how we build with AI across client digital products and internal tooling.

In this role you'll own architecture decisions, write robust TypeScript/Next.js/React code, and collaborate with teams across our Copenhagen, Montreal, London and Toronto offices to deliver high-quality software that scales with client needs.