Demo

Senior Backend Software Engineer

OSI Engineering
Cupertino, CA Contractor
POSTED ON 4/18/2026
AVAILABLE BEFORE 5/17/2026

A globally leading consumer device company headquartered in Cupertino, CA is looking for a Senior Backend Software Engineer to join their team!

Responsibilities:

  • Convert raw data into format acceptable by training jobs on GCP and AWS
  • Leverage internal and open-sourced training modules.
  • Leverage internal and open-sourced inference stack to generate inferences with fine-tuned LLMs on massive amounts of data, for pre-train and post-training
  • Have the ability to efficiently process and filter very large amounts of data, often times messy .
  • Scalable web services backend and APIs to support data access and data inspection tools


Minimum Qualifications:

  • BS in Computer Science or Equivalent
  • 10 years of programming experience in Python. Extensive experiences in concurrency and parallelism, functional programming, decorators. Familiarity in other programming languages (Java/GoLang/Rust/Swift)
  • Proficient in REST API, Redis, VectorDB or other large scale data storage systems
  • Solid foundational programming skills (algorithms, data structures, OOP, etc)
  • Experience designing, writing, reviewing, testing and delivering software for applications and systems at scale
  • Familiarity with streaming-processing (Kafka) and variety of build tools (Jenkins, Maven, Docker, Gradle) preferred.
  • Experience providing architecture and design guidance preferred.


Type: Contract

Duration: 3 months with extension

Work Location: Cupertino, CA (hybrid)

Pay Rate: $77.00 - $92.00/ph (DOE)

Salary : $77 - $92

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