Senior Software Engineer – AI‑Driven Backend & Frontend

LeanLinking ApS; Aarhus; On-site; DKK 900,000 - 1,200,000; Full time

Benefits offered by this job

Competitive salary

Professional development

Lunch provided

Diverse, supportive team

Job summary

LeanLinking ApS, a small SaaS company in Aarhus, seeks a Senior Software Engineer to join the backend team and contribute across the stack with React TypeScript frontend. You will write production code daily, shape architecture, and mentor peers while expanding AI/LLM usage in our product and development workflow.

You will collaborate closely with .NET Core backend and React TypeScript frontend, building robust, scalable solutions, and evaluating client requests in meetings.

Qualifications

• Experience with .NET Core and React TypeScript in real projects.
• Hands-on with AI coding assistants in daily workflows.
• Ability to mentor and review code.
• Fluent in English, written and spoken.

Responsibilities

• Develop features across the stack, with backend focus.
• Use AI coding assistants in daily workflow.
• Use AI services to build smarter workflows.
• Maintain and evolve project context files for AI tooling.
• Prototype and test AI/LLM-driven concepts.
• Collaborate on technical and architectural decisions and mentor others.
• Participate in client meetings to scope requirements.

Skills

.NET Core

React TypeScript

Backend & Frontend

Mentoring

Tools

Claude Code

GitHub Copilot

Cursor

Codex

Job description

LeanLinking ApS, a small SaaS company in Aarhus, seeks a Senior Software Engineer to join the backend team and contribute across the stack with React TypeScript frontend. You will write production code daily, shape architecture, and mentor peers while expanding AI/LLM usage in our product and development workflow.

You will collaborate closely with .NET Core backend and React TypeScript frontend, building robust, scalable solutions, and evaluating client requests in meetings.