Reddit

Software Engineer, Agent Optimization & Evaluation

Reddit
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8 hours ago
Remote, United StatesSenior / Staff+
H1B sponsor

Base Salary

$110k - $325k/yr

Responsibilities

  • Design and build an optimization harness for evaluating, benchmarking, and improving AI agents across software engineering workflows.
  • Develop Reddit-specific evaluation environments for measuring agent performance on meaningful engineering tasks.
  • Build systems for offline replay, automated evaluation, synthetic task generation, regression detection, and human-in-the-loop feedback.
  • Design model routing and orchestration strategies optimized for quality, latency, reliability, and cost.
  • Define metrics and experimentation frameworks measuring developer productivity and engineering velocity.
  • Build tooling to analyze agent behavior, investigate failures, and accelerate iteration.
  • Partner with Platform Engineering, Infrastructure, and Developer Productivity teams to integrate agent capabilities into engineering workflows.
  • Help shape Reddit’s flexible, model-agnostic agent platform strategy.

Requirements

  • 5–12+ years of engineering experience.
  • Extensive experience building and shipping large-scale production software systems.
  • Experience designing evaluation, experimentation, benchmarking, or measurement systems for AI, search, developer platforms, or complex distributed systems.
  • Strong understanding of modern LLMs, AI agents, and the engineering systems required to deploy them effectively.
  • Experience optimizing systems across quality, latency, reliability, and cost.
  • Strong software engineering fundamentals and a commitment to production-quality systems.
  • Ability to work independently in ambiguous environments and drive technical direction for strategic initiatives.
  • Strong cross-functional collaboration skills across engineering, infrastructure, and platform organizations.

Benefits

  • Comprehensive healthcare benefits and income replacement programs.
  • 401(k) with employer match.
  • Global benefits supporting workspace, professional development, and caregiving.
  • Family planning support.
  • Gender-affirming care.
  • Mental health and coaching benefits.
  • Flexible vacation and paid volunteer time off.
  • Generous paid parental leave.
  • US-based employees receive medical, dental, and vision insurance and additional vacation and parental leave benefits.
  • The role may be eligible for restricted stock units and, depending on the position offered, commission.
  • The posting may span more than one career level.
  • Some interviews may be recorded, transcribed, and summarized by AI, with an option to opt out.
Reddit

About Reddit

5,001-10,000 employees

Reddit builds a social news and discussion platform organized into user-created forums (“subreddits”) for consumers, creators, and communities. It monetizes primarily through advertising tools for brands and self-serve advertisers, plus a Premium subscription; developers can access data via its API. Founded in 2005 and headquartered in San Francisco, Reddit became a public company on the NYSE in 2024 and hosts over 100,000 active communities.

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