{"id":3185977,"url":"https://alion.io/job/sparq-contractor-senior-lead-flutterdart-mobile-engineer","title":"(Contractor) Senior Lead Flutter/Dart Mobile Engineer","company":{"id":2107477,"name":"Sparq","domain":"teamsparq.com","url":"https://alion.io/company/teamsparq","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":49,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Mobile","role_family":"Mobile","seniority":"lead","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":137000,"max_usd":268000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":43},"experience_years_min":null,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Claude","optional":false},{"name":"Claude Code","optional":false},{"name":"Dart","optional":false},{"name":"Flutter","optional":false},{"name":"Offline-First","optional":false},{"name":"State Management","optional":false}],"status":"live","first_seen_at":"2026-10-23T19:39:45Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-10-26T04:56:10Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"At Sparq, we help companies solve the right problems-not just build more technology.\nWe’re a modern product engineering partner blending strategy, craftsmanship, and speed to help organizations modernize confidently in the age of AI. From data ecosystems to digital products and AI acceleration, we turn complexity into clarity and ideas into impact.\nIf you’re driven to build what’s next, lead with empathy, and deliver excellence without ego, you’ll feel right at home at Sparq.\nC2C is not available\nMust be authorized to work in the U.S. without sponsorship\nA Day in the Life:\nDesign, develop, and maintain production-grade mobile applications using Flutter and Dart, with a focus on reliability, performance, and offline functionality.\nLead the development of a shared offline package that supports local caching, queued operations, background synchronization, and connectivity state management.\nIntegrate shared offline capabilities into Workforce Tools and WFHQ, ensuring consistent functionality and data handling across both applications.\nImplement local data persistence and background synchronization strategies that allow applications to function reliably during intermittent or extended periods of lost connectivity.\nDevelop offline-first conflict resolution strategies to manage data synchronization, maintain data integrity, and address discrepancies between locally stored and server-side information.\nBuild intuitive data-age indicators and safeguards that prevent users from performing unsafe actions when application data is stale or connectivity is limited.\nLeverage hands-on experience with Claude and Claude Code to support mobile development, troubleshooting, code optimization, and testing activities.\nDevelop and execute comprehensive unit and integration tests covering offline functionality, application restarts, synchronization recovery, and extended offline scenarios.\nValidate application performance and reliability across various devices and operating system versions, identifying and resolving compatibility issues.\nProvide technical leadership through code reviews, troubleshooting, and collaboration with engineering teams to deliver scalable, maintainable mobile solutions.\nWhat it takes:\nConsultative approach and problem solving skills to successfully align digital solutions with long-term business goals of the client\nHands-on experience using AI tools to enhance daily work, or a strong desire to do so, including a willingness to experiment, learn, and champion AI adoption within your role\nClaude Certified Developer or Architect highly preferred; possible opportunity to obtain as a Sparq colleague\nCommitment to understanding and exceeding client expectations\nAbility to perform project oversight and execution of deliverables\nFlexibility to adapt within a high-growth organization\nAbility to lead, mentor and motivate those around them\nHunger for continuous learning and professional development\nIntellectual curiosity to provide creative solutions\nFull understanding of the software development life cycle\nAbility to positively impact fellow colleagues through effective leadership, presentations, coaching, etc. \nDesire to work in a team environment\nGood interpersonal, written and verbal communication skills\nRegardless of your specific role, we seek individuals who are excited to explore, adopt, and evangelize AI tools and methodologies. If you have experience in AI or a proven track record of rapidly learning and mentoring others on emerging tech, you’ll fit right in.\nEqual Employment Opportunity Policy: Sparq is proud to offer equal employment opportunity without regard to age, color, disability, gender, gender identity, genetic information, marital status, military status, national origin, race, religion, sexual orientation, veteran status, or any other legally protected characteristic.\nWe are committed to providing equal employment opportunities and believe in an inclusive workplace. 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