Software Engineer - Application Services

10% of Europe’s CO₂ emissions are caused by residential heating and energy bills are out of control. Aira is here to change that. With our intelligent Aira Heat Pump at the heart, we’re making the switch to clean energy-tech easier and more affordable. Helping Europe turn off gas and slashing energy costs one home at a time. Founded in 2022, and with 1000+ employees and counting, Aira is driving the clean energy revolution by providing homes with modern clean energy-tech solutions such as solar power, battery storage solutions and heat pumps. With a state-of-the-art production facility in Poland, an HQ in Stockholm, Sweden, and hubs across the UK, Germany and Italy, Aira is well on track to install clean energy-tech into 5 million homes by 2034. About The Role Join our expanding Engagement area and play a key role in the Application Services team as a Software Engineer (in-house, full-time), creating, expanding, and maintaining web and mobile apps that create an exceptional Aira experience. The Application Services team's focus is on creating world-class product-driven software for both our customers—end users of Aira’s green energy tech—and our internal users, such as Aira heat pump installers. On one hand, these apps need to be clean, easy to use and intuitive to enable effortless UX. However, at the same time, they must integrate, distribute, and efficiently manage multi-channel live data points (including IoT) and offer them internally via APIs to enable Aira product readiness in daily operations and support customers in making informed energy decisions. This is a Software Engineer role, back-end heavy, with front-end sense & experience needed to be involved in technical discussions to push the product development forward. What is the role about?

• Writing, maintaining and enhancing clean, scalable code including thorough testing
• Using Kotlin to design, implement and maintain back-end services that serve the app and distribute the data in microservice architecture
• Building real-time streaming data pipelines and real-time streaming applications with Kafka
• Collaborating with other Aira Engagement teams (Connectivity, IoT), and implementing integrations with e.g., external energy tariffs providers and upcoming projects related to expanding Aira green tech solutions portfolio
• Demonstrating expertise in system architecture, (relational and non-relational) database design, AWS cloud operations as well as building and integrating APIs
• Actively engaging in ongoing discussions regarding design and device lifecycles
• Applying Agile methodologies and collaborating in cross-functional teams
• Optional: Contributing to the implementation of app features using Flutter, including handling user accounts, providing, and supporting integrations with Identity Providers for both installers and customers

What are we looking for?

• Mid to Senior profile with 5+ years of experience in Software Engineer role (back-end heavy)
• Proficiency in Kotlin, Java Spring Boot, AWS, Kafka is preferable, but we are flexible - e.g. experience in Go, Node.JS or Java for back-end is sufficient too.
• Experience in product-driven development, microservices, building & integrating APIs, system architecture, database design, and software development principles
• Right seniority and mindset to take on responsibility, and ownership and enable mission-critical discussions
• Availability and openness to work from the office - currently we aim at 4 days a week on-site model
• Front-end proficiency in Flutter.

What's in it for you?

• Gain hands-on experience in a fast-growing scale-up, with a supportive and inclusive culture, and career advancement opportunities.
• Collaborate with diverse teams across international markets and launch products globally.
• Develop and grow personally and professionally in an entrepreneurial-minded environment.
• Thrive in a dynamic, solution-oriented culture, tackling challenges and driving meaningful solutions that make a positive impact on the world.
• Influence the company's success, with a visible impact on product development and market growth.
• Enjoy working in our brand new office. Conveniently located near public transport, with Sankt Eriksplan subway station just a few minutes walk away.

Aira leads in the next generation of Energy. We are driven by our belief that the power of diversity fuels innovation. We welcome individuals from all backgrounds, cultures, and perspectives to join our team, united in our mission to create a better future for society and the planet.