Reaktor Innovations Oy logo

Mobile Developer

Job Overview

Location

Helsinki

Job Type

Full-time

Category

Mobile Developer

Date Posted

February 26, 2026

Full Job Description

đź“‹ Description

  • • Are you a seasoned Mobile Developer with a passion for crafting exceptional user experiences and a knack for solving intricate technical puzzles? Reaktor Innovations Oy, a renowned award-winning tech community, is actively seeking an experienced Mobile Developer to become an integral part of our dynamic Gaming & Entertainment Business Unit in Helsinki. If you excel in the fast-paced world of mobile development, relish collaborating within multidisciplinary teams to tackle complex challenges, and are driven by curiosity in a low-hierarchy, collaborative environment, then this opportunity might be the perfect launchpad for your next career move.
  • • As a key member of our Gaming & Entertainment Business Unit, you will play a pivotal role in supporting our esteemed clients within this vibrant and ever-evolving industry. Your responsibilities will extend beyond mere coding; you will be a strategic partner, contributing to the entire lifecycle of mobile application development. This includes the hands-on development of native mobile applications for both iOS and Android platforms, ensuring they are robust, performant, and visually stunning. You will engage directly with clients and stakeholders, a crucial aspect of your role, to meticulously clarify ambiguous requirements and translate them into elegant technical solutions within a supportive team setting.
  • • Beyond implementation, you will actively contribute to critical architectural decisions, shaping the long-term technical direction of projects. Your involvement will span the entire project continuum, from initial discovery and concepting phases through to iterative delivery, demonstrating a commitment to building not just features, but complete, well-architected solutions. We value a holistic approach, and you will occasionally be encouraged to contribute beyond the mobile domain, leveraging your full-stack thinking capabilities when the project's needs and your expertise align, fostering a truly integrated development process.
  • • A core tenet of this role is a profound sense of ownership. You will embody a testing ownership mindset, taking full responsibility for the development cycle. This means not only implementing features with precision but also rigorously ensuring that all delivered functionalities are defect-free and seamlessly shipped to end-users. Your expertise will also be vital in production app monitoring and troubleshooting, ensuring the stability and reliability of applications post-launch. We also place a high value on aesthetic excellence, and you will have the opportunity to work closely with Motion Designers, contributing to the creation of polished animations that elevate the user experience.
  • • Reaktor's ethos is built on adaptability and continuous learning. For two decades, we have cultivated a culture that fosters the qualities and capabilities needed to adapt, react, and support change, ensuring Reaktor remains resilient in a fast-paced environment while prioritizing the well-being of our people. This role offers you the unique ability to significantly impact how you work. In collaboration with your team and the client, you will have the autonomy to choose the most effective approaches, technologies, and methodologies for any given situation. You will be immersed in a supportive community, surrounded by experienced and considerate colleagues who are genuinely invested in your success. We champion a sustainable work-life balance, offering comprehensive support for your life outside of work, including practical benefits like moving day assistance, car-sharing options, sick child care services, and even office space for private events.
  • • Professional growth is paramount at Reaktor. In addition to the day-to-day challenges and learning opportunities inherent in client projects, we provide extensive resources for your development. These include internal training courses, engaging community events, and informal yet insightful 15-minute coffee breaks dedicated to discussing the latest hot topics in tech and design. Furthermore, you'll have the chance to participate in more in-depth, academy-like studies, such as our Cloud Academy, to deepen your expertise. Our vibrant culture also extends to over 300 hobby clubs, ranging from winter swimming and running to knitting and archery, fostering connections and shared interests outside of work hours, many of which are actively supported by Reaktor.
  • • Reaktor is deeply committed to diversity, equity, and inclusion. We strive to create an environment that embraces and values every employee for their unique identity. We strongly encourage applicants from all backgrounds to apply, recognizing that individuals from underrepresented communities may hesitate to apply if they don't meet every single requirement. If you find yourself contemplating whether to apply, we urge you to submit your application anyway – you might just be the exceptional candidate we are seeking. Learn more about our DEI initiatives at https://www.reaktor.com/dei.
  • • If you are ready to contribute your mobile development expertise to a forward-thinking company that values innovation, collaboration, and employee well-being, we encourage you to connect with us. We are eager to hear from you and explore how you can become a valuable part of the Reaktor Innovations Oy family.

🎯 Requirements

  • • Approximately 8 years of professional experience in mobile development, demonstrating deep expertise in both iOS and Android ecosystems.
  • • Solid practical experience with Swift, UIKit, Reactive Programming, Java, and Kotlin.
  • • Experience with production app monitoring and troubleshooting, coupled with a strong testing ownership mindset.
  • • Experience engaging with multiple stakeholders to solve challenging, ambiguous problems, and fluent verbal and written English communication skills.

🏖️ Benefits

  • • The ability to significantly impact how you work, choosing approaches, technologies, and methodologies in collaboration with clients and your team.
  • • A supportive community with experienced and considerate colleagues invested in your success.
  • • A sustainable work-life balance with practical support for daily life outside of work (e.g., moving day, car share, sick child care, private event space).
  • • Opportunities for professional growth through internal training, community events, academy-like studies, and informal tech discussions.

Skills & Technologies

Java
Swift
Kotlin
Flutter
iOS
Mobile
Remote

Ready to Apply?

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About Reaktor Innovations Oy

Reaktor is a technology consulting company that helps businesses transform through digital innovation. They specialize in creating custom software solutions, digital strategies, and user experiences. Their services span across various industries, including retail, finance, and public sector, enabling clients to leverage cutting-edge technologies like AI, cloud computing, and data analytics. Reaktor focuses on building long-term partnerships, delivering tangible business value, and fostering a culture of continuous learning and experimentation. They are known for their agile methodologies and a strong emphasis on talent development, aiming to be a catalyst for their clients' digital evolution and competitive advantage in the modern marketplace.

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