Software Engineer, Applied AI (Staff+)

The role

You will build and evolve an agent harness including agent loops, tools, skills, and memory. You will also design customer-facing experiences and build scalable, high-performance systems.

What you will do

• Build and evolve our agent harness: the agent loop, tools, skills, and memory.
• Build agentic workflows that automate complex, multi-step processes.
• Design sophisticated customer-facing experiences.
• Improve quality, cost and latency through evals, simulation environments and experiments.
• Build reliable, scalable, high-performance systems with strong observability, metrics, and operational practices.
• Lead technical design, mentor other engineers, and help establish engineering best practices.
• Contribute to building a world-class engineering team through recruiting and knowledge-sharing.

Required qualifications

• 7+ years building production software
• Recent hands-on experience shipping LLM-powered products or agents
• Able to clearly communicate reasoning and decisions to technical and nontechnical teammates
• Have grown and mentored early career engineers

Benefits

• Competitive salary
• Meaningful early equity
• Health insurance (medical, dental, vision)
• 3 weeks of PTO
• 11 paid company holidays plus a winter holiday break
• 3 months of paid family leave
• Wednesdays work from home
• Regular team dinners, events, offsites, and retreats
• 401k plan
• Commuter and lunch stipend

About the company

Lightfield is reimagining CRM as a world model of a business. The team previously built Tome and has raised more than $70M from Andreessen Horowitz, Coatue, Maverick Ventures, and Greylock.