Job Title: Senior Software Engineer Job Type: Contractor (~15 hrs a week) Location: Remote Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems.
Performance Engineer
United States
$100 – $130/hr
May 23, 2026
Job description
Join a leading AI lab’s GenAI team focused on advancing large language model infrastructure, systems optimization, and AI performance engineering.
This opportunity is seeking experienced Performance Engineers with strong expertise in:
- Systems programming
- Runtime optimization
- Compiler-related performance topics
- Low-level infrastructure optimization
The role centers around improving AI training and inference infrastructure through hands-on technical work involving C++, Python, and Rust.
This is a W-2 employment position through Cincinnatus LLC, with placement opportunities supporting a leading AI laboratory.
Key Responsibilities
Guide research and engineering teams on:
- Systems optimization
- Runtime performance
- Compiler engineering
- AI infrastructure efficiency
Design technically challenging performance engineering tasks across multiple systems domains
Write structured and accurate solutions for:
- Performance optimization problems
- Systems engineering scenarios
- Runtime efficiency challenges
Evaluate engineering tasks and provide clear written technical feedback
Develop:
- Evaluation rubrics
- Systems design guidelines
- Performance benchmarking frameworks
for AI-related workloads.
- Collaborate with subject matter experts to maintain:
- Technical accuracy
- Consistency
- Data quality
Required Qualifications
Minimum 2 years of professional experience in:
- Performance engineering
- Systems programming
- Low-level optimization
Deep expertise in at least one of:
- C++
- Python
- Rust
Working familiarity across the remaining languages is strongly preferred
Proven track record of measurable production performance improvements such as:
- Latency reduction
- Throughput optimization
- Memory footprint reduction
Demonstrated professional growth and career progression
Ability to reliably contribute at least:
- 30 hours/week
- Weekday availability required
Strong written communication and technical explanation skills
Employment Details
- W-2 employment through Cincinnatus LLC
- Full-time contingent engagement
- 40-hour weekly commitment
- No conflicting engagements permitted during the contract
About Cincinnatus LLC
Cincinnatus LLC is an enterprise staffing company partnering with leading technology organizations to source and employ highly skilled professionals for contract and contingent roles.
The company serves as the employer of record and provides:
- W-2 employment
- Payroll
- Benefits
- Compliance support
while placing professionals directly into high-impact technology initiatives.
Equal Opportunity
Cincinnatus LLC is an equal opportunity employer and considers qualified applicants regardless of protected characteristics or status.
Apply now
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Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based.
Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based.
Collaborate with autonomous AI coding agents, evaluate AI-generated code, and help improve agentic software engineering workflows for next-generation AI systems.