Software Engineer V - Senior Mobile Systems Engineer

Spectraforce Technologies
United States, California, Burlingame
Sep 09, 2026
Job Title: Software Engineer V - Senior Mobile Systems Engineer Duration: 06 Months (Possible extension) Location: Burlingame, Sunnyvale, MPK (CA) or NYC, NY Summary: The client is looking for a Senior Mobile Systems Engineer with client-server experiences Must-Have HARD Skills: Mobile - Experience building mobile products in Kotlin/Swift with distributed backends Concurrency & Async - Experience in multithreaded, event-driven systems System Engineering - Architecture design, performance optimization, system reliability improvements Nice-to-have Skills: Wearables - Experience building wearable products (glasses, watches, MR headsets, etc) C++/Rust: Proficient system programming in either programming language AI/ML Engineering - LLM prompt tuning, evaluation, tool calling, and agent workflows Years of Experience: 10+ years 7+ with NTH skills, open to considering Key Projects/Day-to-Day Responsibilities: Proficient in Kotlin or Swift, async programming Design and implement software systems spanning wearable devices, IOS/Android mobile applications, and distributed backend services Strong understanding of memory management, resource ownership, race conditions and deadlock preventions Debug race conditions, thread-safety issues, and complex concurrency issues Optimize CPU, memory, latency and system reliabilities Verbal and written comms skills Interview Process: How many rounds of interviews: 2 rounds Types of Interviews: behavioral, technical, presentation, etc. (45 mins each Mainly technical and some behavioral) Are there any immediate disqualifiers or red flags that stand out: Short tenure - less than 1 year