{"id":123915,"url":"https://alion.io/job/sigma-software-group-android-developer-construction-tech-2","title":"Android Developer (Construction Tech)","company":{"id":6266,"name":"Sigma Software Group","domain":"sigma.software","url":"https://alion.io/company/sigma-software-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Warsaw, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":33000,"max_usd":78000,"period":"year","method":"role_seniority_country_cell","sample_n":12},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Android SDK","optional":false},{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Dependency Injection","optional":false},{"name":"GitHub","optional":false},{"name":"Java","optional":false},{"name":"Jetpack Compose","optional":false},{"name":"JUnit","optional":false},{"name":"Kotlin","optional":false},{"name":"Kotlin Coroutines","optional":false},{"name":"Mockito","optional":false},{"name":"MVVM","optional":false},{"name":"Retrofit","optional":false}],"status":"live","first_seen_at":"2026-08-25T10:13:19Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-16T21:25:09Z","board_verified":true,"closed_at":null,"days_open":52,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":52},"description":"Company Description\nJoin a product-focused team developing modern mobile solutions used daily by hundreds of thousands of users across construction sites worldwide. We are looking for a Middle Android Developer who is passionate about scalable mobile applications, clean architecture, and modern Android technologies.\nWe at Sigma Software collaborate closely with a sustainable European Customer headquartered in Sweden to build digital products that improve workforce management, operational efficiency, and worker safety. You will become part of a mature engineering environment with strong technical expertise and close integration into the Customer’s organization.\nThis is an opportunity to work on long-term product development, contribute to business-critical solutions integrating software and hardware technologies, and grow alongside experienced Middle and Senior engineers.\nCUSTOMER\nOur Customer is a sustainable European product company headquartered in Sweden that develops digital solutions for workforce and construction site management. The company focuses on improving operational efficiency and worker safety through connected mobile applications and smart physical devices. Sigma Software engineers work as an integrated part of the Customer’s agile product organization.\nPROJECT\nThe project focuses on building mobile and web products for workforce presence tracking and access management on construction sites worldwide. The platform combines software products with physical devices, allowing users to register entrances and exits, remotely unlock doors, and interact with construction machinery directly from mobile applications.\nThe product is business-critical and continues to scale rapidly, serving hundreds of thousands of active users daily. The engineering team follows modern Android development practices with a strong focus on maintainability, scalability, and continuous improvement.\n Design, develop, and maintain Android applications using Kotlin and Jetpack Compose\nParticipate in architecture discussions and technical decision-making\nRefactor, optimize, and modernize existing Android codebases\nImplement scalable and maintainable features following Clean Architecture principles\nTroubleshoot and resolve application issues and performance bottlenecks\nIntegrate native Android capabilities including NFC, Bluetooth, and Camera SDKs\nCollaborate with cross-functional teams including iOS engineers, QA specialists, backend developers, and product stakeholders\nParticipate in all phases of the software development lifecycle\nContribute to code quality initiatives, peer reviews, and continuous improvement processes\nSupport CI/CD and engineering automation initiatives\n 3+ years of commercial experience in Android development\nGood knowledge of Kotlin and modern Android development practices\nHands-on experience with Jetpack Compose, Coroutines, Flow, Retrofit, and Android SDK\nExperience with MVVM and Clean Architecture approaches\nSolid understanding of software engineering fundamentals, including OOP, algorithms, data structures, and design patterns\nExperience with dependency injection and unit testing tools such as Mockito and JUnit\nStrong analytical and problem-solving skills\nAbility to take ownership of features and drive their development independently.\nStrong communication and collaboration skills\nIntermediate or higher English level\nBachelor’s degree in Computer Science, Computer Engineering, or equivalent practical experience\nWILL BE A PLUS\nExperience with Java, XML, and Android Data Binding\nExperience modernizing legacy Android applications\nMigration experience from XML-based UI to Jetpack Compose\nExperience transitioning legacy navigation approaches to Navigation Compose\nExperience with CI/CD pipelines and release automation\nScripting and process automation experience\nExperience using AI-assisted engineering tools in development workflows\nPortfolio of published Android applications on Google Play or GitHub\n PERSONAL PROFILE\nProactive and ownership-driven mindset\nStrong collaboration and communication skills\nAttention to code quality and maintainability\nAbility to work effectively in agile distributed teams\nInterest in modern mobile technologies and continuous improve","description_format":"text","description_chars":4238,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[{"language":"English","level":"All 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