Senior Software Developer

About The Role
Harvia has just entered the new era —
the digital sauna experience
— by building intelligent digital products, connected IoT devices, a powerful cloud ecosystem and integrating with wearables.

Harvia Finland Oy is looking for a
Senior Software Developer / Software Architect
to join Harvia's new
AI-native software development team in Finland
.

You will be a founding member of a small, high-impact team that defines how we build, operate, and evolve digital sauna experiences — from connected devices to mobile apps, integrating with wearables and cloud platforms.

This is not traditional software development. We are building the future of development itself — using
AI agents, LLMs, and automation tools
to code, test, deploy, and learn faster than ever before.

What You'll Do

• Architect, design, and implement modern digital solutions for Harvia's connected sauna ecosystem and develop the sauna control devices software.
• Drive adoption and orchestrate AI-native development workflows (e.g., code-generation agents, AI-assisted architecture planning, automated testing, and deployment).
• Collaborate with our in-house developers in Finland, Germany and the USA, and with our external development partners in Finland and other countries.
• Work closely with the Head of Digital & Devices (Perttu Rönkkö) to shape product roadmaps and technical direction.
• Mentor and support junior developers in AI-assisted development practices.
• Define how AI will transform Harvia's software engineering culture.

Our technology stack

• Frontend: React/React Native, Typescript, REST & GraphQL, Web/Android/iOS, Playwright UI test automation
• Backend: AWS, serverless/AWS Lambda, containers, , Typescript, Python, REST & GraphQL APIs, Github Actions based CI&CD, Serverless & Terraform
• Device/firmware: FreeRTOS & embedded Linux, C/C++/Rust/Python, ESP32/STM32/NXP i.MX

Your Background

• 5+ years of experience in software engineering (cloud, web, mobile, or IoT).
• Experience designing scalable cloud architectures (AWS, Azure, or GCP).
• Solid understanding of modern frameworks , React, TypeScript, Python, or similar).
• Experience and deep interest in AI-assisted development, LLM APIs, prompt engineering, or agentic workflows.
• Familiarity with API development and integration — ideally with cloud or IoT systems.
• A growth mindset and curiosity for applying AI to real-world engineering challenges.
• Fluent in English and/or Finnish.

Why Join Harvia?

• Shape the future of wellness through digital innovation.
• Join a global wellness leader with a growing digital and AI innovation agenda.
• Be part of a new AI-native software team at its inception and work with modern tools and freedom to experiment.
• Work on meaningful products that connect technology, health, and wellbeing.
• Collaborate with top developers and partners worldwide.
• Competitive salary, hybrid flexibility, and growth opportunities in a global brand.

This position is primarily based in the Helsinki metropolitan area or the Jyväskylä region. We also offer the flexibility to work partially remotely.

Interested in joining Team Harvia?
Please submit your application by December 17th, 2025 using the provided link. Include your resume, desired salary, and a brief description of why you are the ideal candidate for this position.

If you have any questions about the role, contact Head of Digital & Devices Perttu Rönkkö at or

About Harvia
Harvia is one of the leading companies operating in the sauna market globally. Harvia's brands and product portfolio are well known in the market, and the company's comprehensive product portfolio strives to meet the needs of the international sauna market of both private and professional customers.
Harvia's revenue totaled EUR 175.2 million in 2024. Harvia Group employs approximately 700 professionals in Finland, United States, Germany, Romania, China and Hong Kong, Austria, Italy, and Sweden. The company is headquartered in Muurame, Finland, adjacent to its largest sauna and sauna component manufacturing facility.