Software Engineer, Applied AI

Mercor

$150K — $180K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Strong backend engineering fundamentals in a modern language (Python, Go, Rust, etc.)
  • Experience with model training and inference
  • Solid grounding in statistical analysis and experimental design for measuring model performance and improvements
  • Familiarity with evaluation methods for large language models
  • Comfortable working through ambiguity and shipping iteratively

Responsibilities

  • Partner closely with frontier AI labs to understand data and evaluation needs
  • Build and operate scalable data pipelines for post-training workflows
  • Design and build scalable systems for synthetic data generation and data quality
  • Prototype new data types, benchmarks, and evaluation frameworks
  • Lead technical discussions with customers

Benefits

  • Bi-annual performance bonus structure
  • Generous equity grant vested over 4 years
  • Up to $15k relocation bonus
  • $10K proximity bonus (if living within 0.5 miles of the office)
  • $1.5K monthly stipend for meals
  • Free Equinox membership
  • $200 monthly laundry reimbursement
  • $200 monthly personal wellness reimbursement
  • Health, dental, and vision insurance
Full Job Description
About the Role

As a Software Engineer on Applied AI, you'll build, deploy, and operate systems that sit directly between frontier AI research and data delivery.

This is a high-ownership, deeply technical role. You'll work through ill-defined problems, prototype quickly with researchers and customers, and take systems from early experiments to reliable, scalable production. You'll own projects end-to-end: spanning requirements gathering, creating data creation pipelines, and improving model-adjacent infrastructure, while partnering closely with frontier AI labs and Mercor's internal teams to ship high-impact applied AI solutions.

What You'll Do
  • Partner closely with frontier AI labs to understand their data, post-training, and evaluation needs
  • Build and operate scalable data pipelines for post-training workflows and model evaluations
  • Design and build scalable systems for synthetic data generation and data quality, and work directly with customers to understand requirements and develop technical solutions
  • Prototype new data types, benchmarks, and evaluation frameworks
  • Lead technical discussions with customers


What Makes This Role Different
  • Direct frontier exposure. You'll work closely with researchers at leading AI labs, building infrastructure that directly accelerates cutting-edge research.
  • Coding + customer work. This role blends deep technical execution with customer interaction. Engineers who enjoy both building and communicating tend to thrive.


Day-to-Day
  • Fast-moving, high-ownership environment
  • Technically demanding, collaborative work
  • "Building the plane while flying it"
  • In-person culture at our new New York office at One World Trade Center
  • Aligned with frontier research timelines


What We're Looking For
  • Strong backend engineering fundamentals in a modern language (Python, Go, Rust, etc.)
  • Experience with model training and inference
  • Strong grounding in statistical analysis and experimental design for measuring model performance and improvements
  • Familiarity with evaluation methods for large language models
  • Comfort working through ambiguity and shipping iteratively


You're likely someone who
  • Enjoys ownership and customer-facing problem solving
  • Thinks entrepreneurially and moves quickly
  • Balances speed with engineering rigor
  • Communicates clearly with technical and non-technical users


Why Engineers Join
  • Direct exposure to frontier AI research
  • Real ownership and visible impact
  • Technical depth paired with human interaction
  • Fast feedback loops and high leverage
  • There are very few roles that combine this level of technical rigor, customer proximity, and research exposure.


Benefits
  • Bi-annual performance bonus structure
  • Generous equity grant vested over 4 years
  • Up to $15k Relocation bonus
  • $10K proximity bonus (if you live within 0.5 miles of our office)
  • $1.5K monthly stipend for meals
  • Free Equinox membership
  • $200 monthly laundry reimbursement
  • $200 monthly personal wellness reimbursement
  • Health, Dental, Vision insurance

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