Senior AI-Driven Full-Stack Engineer

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

Benefits offered by this job

Team trip

Catered lunches

Drinks on Fridays

Modern office

Equipment provided

In-office massage

Conference trips

Pension and health insurance

Career progression

Exchange program

Job summary

Signifly is seeking a Senior Software Engineer to join our Tech team in Copenhagen and help shape how we build with AI. You will work as a senior full-stack engineer on diverse client projects, using TypeScript, Next.js and React at the core, with backend services and integrations as needed.

You will contribute to AI-powered features, agentic development, and maintain strong fundamentals in architecture, code quality and judgment while collaborating across offices in Copenhagen, Montreal, London

Qualifications

• Solid experience as a senior full-stack developer with modern TypeScript and Next.js/React.
• Hands-on experience with AI-assisted and agentic development and APIs.
• Ability to own architecture decisions and drive technical direction.

Responsibilities

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

Skills

Full-stack development

TypeScript

Next.js/React

Node.js

APIs

Databases

AI-assisted development

Agentic development

Claude Code

Tools

Claude Code

Job description

Signifly is seeking a Senior Software Engineer to join our Tech team in Copenhagen and help shape how we build with AI. You will work as a senior full-stack engineer on diverse client projects, using TypeScript, Next.js and React at the core, with backend services and integrations as needed.

You will contribute to AI-powered features, agentic development, and maintain strong fundamentals in architecture, code quality and judgment while collaborating across offices in Copenhagen, Montreal, London