Who we are looking for

Are you a builder who loves to own projects from architecture to deployment, blending modern web tech with the power of AI?

 Relevant experiences

• Deep, hands-on experience with modern web stacks, specifically React/Next.js and Node.js/TypeScript (preferably with NestJS).

• Proven ability to design, architect, and own scalable and robust software solutions.

• Experience with cloud infrastructure (e.g., AWS, GCP, Azure) and CI/CD principles.

• Comfortable and effective in direct client communication for project planning and technical strategy.

• Must have legal eligibility to work in Denmark.

 Nice to Have

• Previous experience working in a fast-paced digital agency environment.

• Familiarity with other technologies like PHP, .NET, WordPress, or Shopify.

• A strong, demonstrable interest or background in integrating AI/LLM technologies.

• Ambitious, self-motivated, and thrives on taking ownership.

• A pragmatic approach to balancing code quality with consistent, day-to-day delivery.

About the job

We're looking for a hands-on Tech Lead to join our team in Copenhagen. You will be at the forefront of our technical projects, owning everything from architecture to execution. This is a pivotal role where you'll blend modern web technologies, cloud infrastructure, and innovative AI/LLM integrations to deliver outstanding digital solutions for our clients.

• Lead the architectural design and technical execution of projects using React/Next.js and Node.js/NestJS.

• Develop and integrate cutting-edge AI/LLM solutions into client projects.

• Engage directly with clients to define project scope, requirements, and technical strategy.

• Ensure high standards for code quality, scalability, and performance through hands-on development and code reviews.

• Manage cloud infrastructure and deployment pipelines to ensure robust and consistent delivery.

 The Role: Architect, Builder, Leader

As our Tech Lead, you won't be stuck in meetings or managing from a distance. This is a hands-on role for a true builder who loves to be in the code, architecting robust systems, and seeing them through to launch. You will be the technical authority on your projects, responsible for making key architectural decisions and ensuring your team delivers high-quality, scalable solutions day in and day out.

You’ll build and lead modern web products end-to-end using Next.js/React on the frontend and NestJS (Node.js/TypeScript) on the backend, backed by PostgreSQL and a pragmatic cloud platform (Docker + CI/CD + observability).

A core part of the role is delivering AI-powered features: designing retrieval and tool-based workflows, implementing a reusable LLM gateway (model routing, prompt versioning, evals, and monitoring), and shipping reliable, measurable LLM integrations.

You’ll work directly with clients to translate business needs into technical blueprints, guide delivery, and ensure solutions are secure, maintainable, and create real-world impact.

Your Technical Toolkit

We're seeking a specific blend of technical expertise and practical experience.

💻 Modern JavaScript Mastery

Deep, hands-on expertise in React/Next.js for the frontend and Node.js/TypeScript (especially with NestJS) for the backend.

🏗️ Architectural Ownership

You've designed, built, and maintained scalable, resilient systems from the ground up.

☁️ Cloud & DevOps

Proficiency in managing cloud infrastructure and CI/CD pipelines to support daily delivery.

🤖 AI & LLM Interest

A genuine curiosity and, ideally, practical experience in integrating AI/LLM technologies.

🤝 Client-Facing Skills

Excellent communication skills and the ability to confidently lead technical discussions with clients.

✨ Bonus Points

Experience in an agency setting and familiarity with platforms like PHP, .NET, WordPress, or Shopify is a big plus.

Why Gneis?

Join a team where your work makes a tangible difference.

🚀 Impactful Projects

Work on diverse and challenging projects for a range of clients, from strategy to final product.

🧠 Innovation at the Core

Leverage cutting-edge technologies, especially Generative AI, to solve complex problems.

🙌 Autonomy and Ownership

We trust our leads to own their work, make decisions, and drive projects forward.

🤝 Co-Creation Culture

Work side-by-side with clients and a passionate internal team in a collaborative, fast-paced environment.

🇩🇰 Copenhagen Hub

Be part of our dynamic team based in the heart of Copenhagen.