Senior Android Developer

CompanyNestAI is a European AI lab for defence delivering the adaptive operating system for modern battlefield operations. We develop adaptive intelligence for unmanned and command systems: AI that continuously learns from operational data and adapts to changing conditions.NestOS is our open, modular, and interoperable platform that enables this at scale and keeps capability evolution under sovereign European control. Founded in 2025 by Peter Sarlin, whose previous company Silo AI became Europe's largest AI acquisition, NestAI brings together over 200 engineers and scientists and partners with leading European defence forces and industry. Role DescriptionJoin the NestAI Edge Software team developing an Android application for planning and controlling unmanned systems. Your primary focus will be building a reliable and understandable operator experience across the application. You will also help integrate fleet and asset management capabilities. This is a hands-on product engineering role for mobile devices. Day-to-day ResponsibilitiesDevelop and maintain features across supported Android environments.Build clear and reliable workflows for mission planning, control, monitoring, and accessing media, images and video streams.Integrate situational-awareness data and device information from supporting services.Handle connectivity problems, delayed information, and partial failures clearly for the operator.Review code, mentor developers, and validate behavior with development and test partners. Qualifications & ExperienceStrong Android development experience with Kotlin. Additional experience with C++, Python, or Go is a plus.Experience with mobile architecture, state management, asynchronous work, and testing.Experience integrating mobile applications with networked devices or backend services is valuable.Experience building reliable user interfaces for complex or mission-critical systems is valuable.Clear technical communication and pragmatic quality practices.Resilience to work with complicated 3rd party dependencies. Why join NestAIAt NestAI, you’ll build meaningful, real-world technology as part of a world-class team of engineers, scientists, and experienced professionals. You’ll work on systems where reliability genuinely matters, contribute to Europe’s security and resilience, and solve problems that demand depth, trust, and craftsmanship. If you want to build with purpose - and with leading experts in the field - you’ve come to the right place. Perks & BenefitsWe offer a growing set of practical benefits to support your work and wellbeing, day to day: Occupational healthcare (currently provided by Mehiläinen)Epassi Flex benefit (sports, culture, commuting, wellbeing)Lunch benefit (25% tax-free coverage)Auntie (mental wellbeing services)Regular team lunches and all-hands eventsYour choice of Mac or PCHoliday allowance (50% of holiday salary)Phone benefit according to company policy (subscription and device) We are continuously developing and expanding our benefits as we grow. PracticalitiesEmployment is subject to applicable security screening (including SUPO, where required).NestAI is an equal opportunity employer. We consider all applicants based on their skills, experience, and potential.We are currently unable to provide visa sponsorship or international relocation support for this position. Candidates must already be based in Finland or in the EU and have a valid work permit for this region at the time of application.