Performance Engineer (C++, Python, Rust)

Engineering • W-2 Contingent • Remote (US) • $100-$130/hr

JobHub by NeonLabs, in partnership with Cincinnatus LLC, is seeking experienced Performance Engineers with expertise in C++, Python, and Rust to support a leading AI lab building next-generation large language models and GenAI infrastructure.

This role focuses on low-level systems optimization, runtime performance, profiling, and performance-critical engineering workflows that directly impact advanced AI training and inference systems. You'll work alongside elite engineering and research teams helping improve the systems powering frontier AI models.

⚙️ What You'll Do

The Performance Engineer (C++, Python, Rust) role is a remote contract position paying $100-$130/hr. It suits experienced professionals who want flexible, project-based AI work reviewed on a rolling basis. You collaborate directly with client teams on real deliverables that help train and evaluate next-generation AI systems, with no long-term commitment required.

• Work with engineering and research teams to improve AI infrastructure and model performance.
• Design and solve advanced systems programming and performance engineering tasks.
• Evaluate technical solutions and provide detailed written feedback.
• Develop evaluation frameworks for profiling, benchmarking, memory optimization, and runtime analysis.
• Help improve AI training data quality related to systems engineering and low-level optimization.
• Collaborate with domain experts to ensure technical consistency and accuracy.

🧠 Ideal Qualifications

• 2+ years of professional experience in performance engineering, systems programming, or low-level optimization.
• Deep hands-on expertise in C++ for performance-critical systems.
• Strong Python experience for profiling, tooling, benchmarking, or automation workflows.
• Rust experience in systems-level or safety-critical environments is a strong plus.
• Proven track record improving latency, throughput, memory efficiency, or runtime performance in production systems.
• Strong written communication and technical reasoning skills.
• Demonstrable career progression and hands-on engineering experience.

🔬 Bonus Experience

• Compiler engineering or runtime optimization.
• Profiling and benchmarking large-scale systems.
• AI infrastructure or distributed systems experience.
• Performance analysis for inference or training workloads.
• Systems-level tooling or optimization frameworks.

💡 What Makes This Role Unique

• Work directly with one of the world's leading AI labs.
• Help improve the infrastructure behind frontier AI systems.
• High-impact engineering work tied directly to next-generation GenAI development.
• Opportunity to shape how AI systems reason about systems programming and optimization.

💰 Engagement Details

• Pay: $100-$130/hour (USD)
• Employment Type: W-2 Contingent Role | Remote
• Location Requirement: United States 🇺🇸
• Schedule: Minimum 30+ hours/week during weekdays
• Employer of Record: Cincinnatus LLC
• Placement: Embedded within a leading AI lab team

📋 Application Process

• Submit your resume via the apply button below.
• Qualified candidates may move through technical evaluation and onboarding quickly.
• Candidates should be available for reliable weekday collaboration.