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Senior Backend Software Engineer (Data and ML Innovation)

Senior Backend Software Engineer (Data and ML Innovation)

Hybrid

Cupertino, United states

$ 92 /hour

Senior

Freelance

19-12-2025

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Skills

Critical Thinking Python Java Swift Rust Docker Jenkins Active Listening Training Architecture Programming Organization AWS GCP Redis Maven Gradle Kafka

Job Specifications

A globally leading consumer device company headquartered in Cupertino, CA is looking for Senior Backend Software Engineer (Data and ML Innovation) to join their dynamic team! The vision for the AI/ML FM Data organization is to improve Foundation Models by leveraging data from a variety of sources: crawl, license, vendor and internal crowd-sourcing. As a Senior Software Engineer on the team, you will drive backend innovations, identify key opportunity areas where data can play a crucial role and experiment with various data augmentation strategies to improve model training efficiency and performance.

Job Responsibilities:

Training data pipeline development. Convert raw data into format acceptable by training jobs on GCP and AWS.
Leverage internal and open-sourced training modules.
Large scale inferences: 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
Data processing and data filtering: 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

Preferred Qualifications:

Familiarity with streaming-processing (Kafka).
Familiarity with a variety of build tools (Jenkins, Maven, Docker, Gradle)
Experience providing architecture and design guidance
A good communicator with clear and concise, active listening and empathy skills.
Are self-motivated and curious. Strive to continually learn on the job.
Have demonstrated creative and critical thinking with an innate drive to improve how things work. Have a high tolerance for ambiguity

Type: Contract

Duration: 3 months with extension

Work Location: Cupertino, CA (hybrid)

Pay range: $ 77.00 - $ 92.00 (DOE)

About the Company

OSI Engineering is a leading Technology Workforce Solutions provider across the globe. The company develops, implements and manages workforce solutions through every stage of the product lifecycle, from early application development through final production, delivering the highest-level technology outcomes. Our capabilities include managed service programs, contingent workforce services and recruitment process outsourcing (RPO) solutions. With a remarkable track record spanning over 25 years, OSI has successfully delivered ... Know more