Software Engineer I

We are looking for a Software Engineer to join the Kapacity.io team at EnergyHub!

Our team, made up of YC alumni (S21) and elite product and software talent, builds some of the most advanced flexibility solutions in the market.

Kapacity.io , previously backed by Y Combinator and acquired by EnergyHub in 2024, focuses on the European energy market, offering an energy management platform to energy companies, allowing them to connect residential heat pumps, EVs and batteries to a Virtual Power Plant.

EnergyHub is the leading residential Virtual Power Plant provider in North America, with over 2.5 million connected residential devices.

Virtual Power Plants (VPP) allow energy companies to adjust their customers’ power consumption to reduce grid congestion and benefit from price volatility.

VPPs reduce the need for peak power generation, reducing investment needs and carbon emissions of the grid.

Residential users are compensated for participation with reduced energy costs and/or direct compensation.

Join us in building high impact solutions for energy grid flexibility.

If you’re a growth minded individual who has a passion for tech and energy, this team is for you!

Here's what you'll do...

• Design, build, and maintain the software that sits at the core of Kapacity.io’s optimization products.
• Become a core contributor to our codebase, actively participating in work planning, retrospectives, and overall team improvement.
• Work directly with sales, translating business needs into viable technical solutions.

We use Go, React, Typescript, Python, Django, PostgreSQL and Docker.

We’re on AWS and communicate on Slack.

Here's what we're looking for...

• We’re seeking a Software Engineer with 2+ years of experience developing and deploying production-quality software with experience in UI / UX development.
• Experience with UI / UX Typescript, Javascript Go(lang), python, docker, AWS Relational Databases (Postgresql)

• Typescript, Javascript
• Go(lang), python, docker, AWS

• Adaptability and resilience when facing new, difficult and ambiguous challenges.
• Strong written and verbal communication skills in English.
• Ability to work regularly at our office in Helsinki. While we allow work remotely, we work together at the office to increase our speed and execution.
• While we allow work remotely, we work together at the office to increase our speed and execution.
• Other duties as assigned

Interest in energy, power markets and HVAC will help you on your journey with Kapacity.io .

What we offer you...

• Join an agile, growth-minded team led by ex-YC founders, backed by EnergyHub’s 200+ multinational workforce.
• We use Slack, Google, AWS, Zoom and Claude Code.
• An environment with a lot of responsibility and independence
• Thrive with ample career development opportunities while making a global impact.
• Enjoy a culture that prioritizes your daily well-being and work-life balance just as much as our social events.
• Join an agile, growth-minded team led by ex-YC founders, backed by EnergyHub’s 200+ multinational workforce.
• We use Slack, Google, AWS, Zoom, and modern AI tools.
• A fast-paced working environment with a lot of responsibility and independence
• Thrive with ample career development opportunities while making a global impact.
• Enjoy a culture that prioritizes your daily well-being and work-life balance just as much as our social events.
• Occupational healthcare provided in accordance with Finnish law.
• Annual leave in accordance with the Finnish Annual Holidays Act.
• Location: Helsinki, Finland (Weekly office presence required)

• Working Hours: In accordance with the Finnish Working Hours Act, typically 37.5–40 hours per week.
• Working Language: English* (Note: As an international organization with a multinational workforce and global client base, English is our primary working language; proficiency in Finnish or Swedish is not required for this role).
• Salary Range: € 4,000 to € 5,000 euros per month
• Application Process: Applications will be reviewed on a rolling basis.
• Data Controller & Rights: The data controllers for your personal data are EnergyHub. In accordance with the EU General Data Protection Regulation (GDPR), you have the right to access, rectify, or request the deletion of your personal data.
• Special Categories: Any diversity-related or demographic information, where collected, is strictly voluntary and processed in an anonymized format for statistical purposes, in accordance with applicable data protection laws.
• Data Retention: By submitting your application, you acknowledge that we may retain your application data for up to 12 months for recruitment record-keeping and to comply with labor laws and regulations.

Visit kapacity.io and energyhub.com to learn more.