Senior Mobile App Developer (iOS/Android)

Aira Group AB

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 1200+ 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, and 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 As a Senior Flutter Developer in the Engagement Team, you will build the tools that enable our field teams to deliver smooth installations and exceptional service. You'll be part of one of our cross-functional teams working primarily with the mobile application that installers and service technicians use. In practice, this means building tools for commissioning and servicing the full range of Aira's clean energy systems — heat pumps, solar panels, batteries, and inverters, as well as managing software updates and helping technicians troubleshoot in the field. As a Senior Flutter developer, you will: Own and ship features across iOS and Android from a single Flutter codebase Partner with UX design to craft interfaces built for real field conditions, used by technicians on-site, often under time pressure Work tightly with the in-field teams to optimize the commissioning experience. Build reliable device integrations over Bluetooth, Wi-Fi, and Thread - connecting technicians directly to the hardware they're installing and servicing Make pragmatic decisions about when to prioritize speed and when to focus on long-term scalability Contribute to architectural decisions that support our rapid growth and international expansion What you bring to the team: Solid experience with product-driven software development and agile environments 5+ years of mobile development experience Flutter experience preferred, React Native considered. Experience building and consuming REST APIs and integrating third-party SDKs Familiarity with state management patterns such as Bloc or Riverpod, and an appreciation for testable code Comfort working with structured data contracts and binary protocols — we use Protobuf for communication between the app and our edge devices We would also appreciate if you have experience with or knowledge of some of the following: Hands-on experience with device communication protocols such as Bluetooth LE, Wi-Fi, or Thread Familiarity with embedded Linux environments or edge computing. The devices our app talks to run a Rust application on Linux hardware Experience with event-driven architectures or message brokers such as Kafka A track record of thriving in rapid-growth environments (start-ups, scale-ups, or new projects). What is in it for you? Develop and grow in a fast-growing scale-up with a supportive and inclusive culture. Contribute to something measurable. Every smooth commissioning enables a more environmentally sustainable Europe. See your work in action in the real world. The app you build is used by technicians installing clean energy systems in people's homes across Europe every day. Collaborate with colleagues across the full value chain, from R&D in Sweden and manufacturing in Poland to installation teams on the ground in the UK, Germany, and Italy. Enjoy the flexibility of our hybrid work model, with our office centrally located in Stockholm near Sankt Eriksplan and Odenplan. We interview on a rolling basis throughout the summer, with the majority of interviews taking place in August. At Aira, we champion next-generation energy as well as diversity and inclusion. We firmly believe that a diverse workforce fosters innovation and creativity, enhancing our ability to serve customers and communities effectively. We welcome individuals from all backgrounds, cultures and perspectives to join our team. Our commitment is to uphold equality and inclusivity, fostering a collaborative environment where everyone can thrive and contribute to a better future for our people and the planet.

Rebtel Networks AB

What will you do? As a Senior Android Engineer at Rebtel, you will be part of our Frontend team, helping modernize and evolve the Rebtel Android app. We are in the middle of migrating from Java to Kotlin and Jetpack Compose while continuously shipping product features to a global user base. You’ll work in a small, empowered team where your technical decisions matter. This role is a mix of building new features, refactoring legacy code, collaborating cross-functionally, and shaping the future of our Android platform. Areas of ownership: Drive the migration from Java to a modern Kotlin + Compose stack Refactor code that slows us down and proactively pay down tech debt Build and modernize Android features using Kotlin and Jetpack Compose Contribute to architecture decisions (MVVM/MVI, Coroutines, platform improvements) Collaborate closely with iOS, Web, Product, Design, and QA to ship the right solutions Improve tooling, testing practices, and CI/CD where needed Maintain and improve the overall health of the Android platform Requirements: You are an excellent communicator and collaborator. We work in English, but you will hear many languages in our Stockholm office 5+ years of experience building Android applications Strong knowledge of Kotlin (and solid Java understanding) Experience with modern Android architecture (Jetpack Compose, Coroutines, MVVM/MVI) Proven ability to work independently and ship high-quality code You are an excellent communicator and collaborator. We work in English, but you will hear many languages in our Stockholm office You care about the code you leave behind — you ship features without cutting corners You prefer simple, pragmatic solutions over clever complexity Experience migrating legacy Android codebases to modern stacks Experience with mobile CI/CD, testing, or DevOps practices is a plus It's a plus with experience with collaborating across platforms (iOS/Web) Why Rebtel? When you join Rebtel, you become part of a global team, bringing together diverse minds from every corner of the world. Our headquarter is nestled in Stockholm and here we strike a balance between dedicated work and more relaxed activities. Every Friday the unmistakable aroma of freshly popped popcorn fills the air, but our celebrations encompass everything from minor and major common accomplishments to cinnamon bun day. At Rebtel, you are the most important asset and we strive to provide a comprehensive package of benefits and perks that enhance your well-being and work experience. Here are some of the things you can expect from us: Pension Plan Health Checkups, Influenza shots and Private Medical Insurance Dental Insurance Occupational insurance Wellness allowance (5,000 SEK) Discount on gym memberships Bonus program Extra parental pay 30 days annual vacation Monday breakfasts Relocation Support, if you're joining us from afar, we'll assist you in making a smooth transition. Rebtel is an international workplace, and at the office, we speak English; therefore, high English proficiency is required. We are committed to being an LGBTQIA+ safe workplace, a place where individuals can be open about who they are without fear of discrimination or harassment. We are Rebtel. We come from all around the world to create products for anyone who has crossed a border. We believe in equal opportunity and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

SwedQ AB

Providing Value & Impact - SwedQ. SwedQ is a consultancy company that has lately proven to have a unique model for those who want to grow, create a legacy, and take on challenges that both add and gain value. Year after year, we have managed to serve clients within a wide range of industries (intentionally excluding gambling and weaponry). During this time, we have also grown steadily, in revenue, in team size, and in the impact of our deliveries. We are now looking for a Senior iOS-developer who wants to be part of the company in a literal sense. That means taking on technical challenges, helping shape how we build things, and getting a portion of the company in the future. If you want to, you can also drive your own ideas forward and implement them with us. You’ll be working closely with skilled engineers, business-minded people, and clients with real demands. That makes it easy to influence decisions, create change, and build things that actually matter. What’s in it for you? The question goes back to you: what do you want? Some people value fixed salaries, pensions, and stability. Others want a bigger share of the upside and are willing to take some risk. Let’s talk that through. One thing is certain—we’ll make sure you find your “it,” whether that’s with us in-house or with our clients. We’ll shape the role to fit both your needs and ours. The good thing? You will be surrounded by people who are technically sharp, ambitious, and generous with what they know. That gives you plenty of room to both teach and learn. And beyond the code, you’ll be close to entrepreneurship, business discussions, and real decision-making. We know, it raises a lot of questions. That’s why we have interviews, right? Who are you: At least 5 years of hands-on experience building and maintaining native iOS applications in production Strong experience with Swift Solid experience with SwiftUI in real-world apps Proven ability to build mobile applications with high standards for quality, usability, and performance Experience working in agile, cross-functional teams together with designers, testers, backend developers, and product owners Strong understanding of app architecture, maintainability, and scalable ways of working over time Experience with Git and modern development workflows A genuine interest in creating excellent user experiences, not just shipping features Understanding of accessibility and a willingness to build solutions that work for more users Ability to take ownership and contribute to technical discussions, not just implementation Strong communication skills in Swedish and English Would be great if you had: Experience from apps with large user volumes or business-critical usage Experience improving app quality through testing, review culture, and better engineering practices Worked closely with design systems and product/design teams Experience mentoring other developers or raising the technical level of a team Familiarity with CI/CD, release flows, and App Store delivery Experience from regulated environments, public sector, mobility, fintech, or other complex domains SwedQ culture SwedQ began with siblings who brought in people they knew. Those people recommended friends, and from there, the company grew further through open head-hunting. Over time, we’ve built a diverse team with different backgrounds, experiences, and insights. We made sure to amplify this diversity by embracing independence and accountability while driving value-creating work. At the same time, we make sure to have fun—with epic football tournaments, unforgettable trips, and great dinners. Perks & Benefits Competitive salary—you decide your preferred salary model Budget to spend on health and gym Generous developer budget Monthly payments into your additional pension fund Private health insurance Private healthcare Office in the city – a stone’s throw from public transport and lunch restaurants Breakfast in the SwedQ office EVERYDAY Support for open-source projects and community engagement Kick-ass colleagues and mentors at every corner Company car (or car allowance) Benefits to make life easier—home cleaning, childcare, and more