Software Engineer, UI

Job Title

Software Engineer, UI

Overview

You’ll own the UI that keeps Kelluu’s autonomous airship operations running. The internal platform is used by everyone from ground crew to mission commanders. You’ll shape the roadmap, build new capabilities, and make the system intuitive so that operators can focus on what matters.

About Kelluu

We are turning the real world into a digital one, with accuracy down to the smallest detail. Kelluu is a Finnish deep-tech company, headquartered in Joensuu with offices in Helsinki and Tampere. We’ve just closed our Series A, and the team is growing fast. Our technology is flight-proven and operational, with both defence and civilian applications.

Why this role exists

Kelluu’s operations are scaling — more airships, more missions, more users relying on our internal platform. We need someone to understand operator needs and build an interface that’s intuitive enough to let our operations grow without adding complexity.

What you’ll own

• Develop Kelluu’s flight operations UI — the platform that every mission depends on.
• Redesign and build the UI to enable a single mission commander to manage multiple airships.
• Enable faster launch sequences and quicker problem resolution through better tooling.
• Map operator needs into a roadmap and translate into deliverables.
• Move the UI toward autonomy and intuitive design that reduces cognitive load.
• Own the technical direction of the UI and grow into leading the team that builds it.

Team & Culture

Work with the operations team and engineering. Collaboration with airship operators and system builders. The team values knowledge sharing and trust. Potential to build and lead a growing UI team.

What success looks like

• 3 months: Build relationships, understand domain, contribute to architecture discussions.
• 6 months: Communicate roadmap priorities, break down initiatives, plan hiring.
• 12 months: Deep UI architecture expertise, autonomous collaboration, mentoring.

What we’re looking for

• Strong frontend skills with Vue or React; ability to work across the stack with Django and Python.
• Experience with AI-assisted development workflows and tools like RabbitMQ.
• Experience building high-reliability systems.
• Excellent communication and ability to work in a fast-moving environment.
• Fluent English, both written and spoken.

Nice to have

• Frontend testing experience.
• Interest in aerospace or defence domain.
• Experience working directly with end users to shape product decisions.

What you get

• Opportunity to own a product that shapes autonomous airship operations.
• Grow into a team lead role as the company scales.
• Work at the intersection of AI, autonomy, and aerospace.

Practical details

• Salary: 4800-5500 €/month
• Benefits: Healthcare, Lunch benefit, Culture, wellbeing benefit, Phone
• Flexible, distributed work; location in Finland (Joensuu / Helsinki / Tampere)
• Start date: As soon as possible
• Reports to: FCS and RF Lead Systems Engineer

Application

Apply by 14.5.2026. Include your CV and application. Direct applications only. For questions, contact Jaakko Rantala at jaakko.rantala@kelluu.com or +358 50 403 8374.