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Reaktor's tech community is looking for an experienced Senior Native Mobile Developer to join our Gaming & Entertainment Business Unit in Helsinki. If you thrive in native mobile development, enjoy solving complex challenges in multidisciplinary teams, and are curious to work in a low-hierarchy environment, you might just be what we’re looking for. You will join our Gaming & Entertainment Business Unit , where you will support clients in this domain across both iOS and Android native mobile development. Your Daily Tasks May Include Developing native mobile applications for both iOS and Android Building polished mobile UI experiences, including high-performance animations Working on mobile SDKs, integrations, analytics, ads, or attribution frameworks depending on the client project Collaborating with clients and stakeholders to clarify requirements, autonomously driving initiatives across the client organization and guiding technical and business teams in selecting the right technologies for their needs. Contributing to architectural decisions and long-term technical direction Participating in discovery, concepting, and iterative delivery — not just implementation Taking ownership of testing, debugging, monitoring, troubleshooting, and production quality Occasionally contributing beyond mobile when the project benefits from backend, API, or cloud infrastructure understanding To Thrive In This Position, You’ll Need Must-haves Strong experience in native iOS development using Swift and/or Objective-C Strong experience in native Android development using Kotlin and/or Java A testing ownership mindset - you take responsibility for the full development cycle, from implementation to ensuring features are defect-free and shipped to users Experience with production app monitoring and troubleshooting Experience engaging with multiple stakeholders to solve challenging, ambiguous problems Fluent verbal and written English to collaborate in an international environment We notice that it usually takes several years of professional experience to build this level of depth across both mobile ecosystems. Nice-to-haves Experience with SwiftUI and/or Jetpack Compose Experience with reactive programming Experience with Flutter Experience with C++ Familiarity with backend development, APIs, databases, or cloud infrastructure Interest in building polished animations and working closely with Motion Designers Finnish language skills Adaptability Willingness to work in a hybrid setup. This means balancing office, client premises, and remote work. Why join us? For two decades, we’ve been developing qualities and capabilities for adapting, reacting, and supporting change – building Reaktor to hold up in a fast-paced environment while ensuring the well-being of our people. While Working At Reaktor, We’ll Provide You With The ability to impact how you work. Together with the client, your team chooses the approach, technologies, and methodologies you think will work best in any given situation A community with as much support as your heart desires A team that’s not only experienced but considerate as well – they all want you to succeed A sustainable work-life balance and support for your daily life outside of work. (e.g., free moving day, Reaktor car share, sick child care services, office space to use for your private events, etc.) An opportunity to grow as a professional. In addition to the day-to-day work, we offer internal training courses, community events, and 15-minute coffee breaks to discuss hot topics in tech and design A possibility to take part in more extended academy-like studies like Cloud Academy 300+ hobby clubs, from winter swimming and running to knitting and archery, that bring people together outside of (and sometimes inside) office hours. Many of these are supported by Reaktor Diversity, equity, and inclusion Together, we are committed to making Reaktor an environment that embraces and values all of our employees for the whole of who they are. We encourage applicants from all backgrounds to apply, knowing that studies show that members of underrepresented communities don’t apply for jobs unless they fully satisfy all of the requirements. If you're thinking twice about applying for this reason, we invite you to send us your application anyway. You could be just the person we're looking for. Read more about our DEI work here. Interested? Drop us a line – We'll be happy to hear from you!
Here's where they are and how to stand out in your next interview.
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That number includes positions in India (9,577), Poland (3,429), the United States (1,753), Singapore (787), and Brazil (779). If you're looking to move or work remotely, check which countries match your goals — then filter WorkMundi by location to see what's actually hiring near you.
Most developer ads you'll see are written in English: 18,397 of the 24,795. That doesn't tell you whether the job itself requires you to speak English or work in English daily, so read each posting carefully. Don't assume the language of the ad matches the language of the team.
The employers posting the most developer roles are Link Group (369 jobs), Upvanta (257), jobgether (226), and OfferZen (212). If you're applying to any of these, research their hiring patterns. They move fast and post often, which means they're either scaling hard or replacing people who didn't fit.
In your interview, expect this: 'Walk me through the last time you had to debug something that took you more than an hour. What was it, what did you try first, and what would you do differently?' Hiring managers ask this to see if you think systematically or just try random fixes. Have a real example ready with specifics.