Senior Software Engineer - Chat & Agent Systems

About this role

We’re looking for a strong software engineer with roughly 4–5 years of experience to play a central role in our chat team.

You’ll help shape the team’s technical direction, own the system design of day-to-day projects, maintain a high bar for engineering quality, and support junior developers through thoughtful design guidance and code reviews. This is a hands-on role for someone who combines strong programming fundamentals with practical experience building agentic systems.

## What you’ll do

• Own the technical design and delivery of chat-team projects.
• Shape engineering priorities, standards, and day-to-day technical decisions.
• Turn product requirements into simple, maintainable system designs.
• Write production Python and remain closely involved in implementation.
• Design clear abstractions that reduce complexity without over-engineering.
• Review pull requests for correctness, maintainability, test coverage, and overall design quality.
• Help junior developers strengthen their programming and system-design judgment.
• Diagnose production issues across application code, agent workflows, prompts, models, data, and infrastructure.
• Improve the reliability, observability, latency, and cost of our chat systems.
• Take initiative in making the team more AI-native by improving how we use coding agents throughout the development lifecycle.
• Mentor other engineers in effective agentic coding workflows, including planning, implementation, testing, debugging, and code review.

## What we’re looking for

• Approximately 4–5 years of professional software engineering experience.
• Strong proficiency in Python, including writing idiomatic, typed, testable, and maintainable production code.
• Strong programming fundamentals and consistently sound engineering judgment.
• Experience designing, delivering, and operating production systems.
• An ability to create useful abstractions while keeping systems simple and understandable.
• Strong knowledge of API desig...