Software Engineer V - Senior Mobile Systems Engineer

Burlingame, CA
Date Posted:08-Sep-2026
Work Type:On-Site
Job Number:497434

Job Description

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 

Applicant Notices & Disclaimers
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At SPECTRAFORCE, we are committed to maintaining a workplace that ensures fair compensation and wage transparency in adherence with all applicable state and local laws. This position's pay range is $85.00/hr$95.00/hr.