Software Engineer V -SeniorMobile Systems Engineer

Spectraforce Technologies, Inc.; Burlingame (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Spectraforce Technologies, Inc. seeks aSenior Mobile Systems Engineer to lead mobile product development across iOS/Android and distributed backends. The role focuses on Kotlin/Swift, concurrency, and system-wide performance optimizations, with emphasis on memory management and reliability.

Experience with wearable integrations and AOSP is a plus. Ideal candidates will have extensive hands-on architecture design skills, strong problem-solving abilities, and excellent communication.

Qualifications

• Must have mobile experience in Kotlin/Swift with distributed backends.
• Strong concurrency/async programming capabilities.
• Expertise in system design, performance and reliability.
• Experience with memory management and race conditions.
• AOSP experience is a plus.

Responsibilities

• Design and implement software across wearable devices, iOS/Android apps, and distributed backend services.
• Improve memory usage, latency, and system reliability.
• Debug race conditions and thread-safety issues.
• Collaborate with teams and communicate clearly, both verbally and in writing.
• Optimize CPU/memory usage and performance in complex systems.

Skills

Kotlin/Swift

Async/Concurrency

System design

Memory management

AOSP

Communication skills

C++/Rust

Tools

Distributed backends

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
• Experience with AOSP is great.

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