Senior AI Ads Experience Engineer — Remote

FDE Times; United States; Remote; USD 191,000 - 267,000; Full time

Benefits offered by this job

Comprehensive Healthcare Benefits and

401k Match

Family Planning Support

Gender‑Affirming Care

Mental Health & Coaching Benefits

Flexible Vacation & Reddit Global Days

Generous parental leave

Paid Volunteer time off

Job summary

Reddit's Ads team is seeking a Senior Software Engineer to build AI-powered advertiser experiences on the Agentic Ads Experience platform. You will own features end-to-end, from problem framing to rollout, with a strong emphasis on reliability and guardrails.

The role requires shipping production AI systems, collaborating across PM, Design, Data Science, and Sales/Ops, and communicating trade-offs clearly. Base salary range is $190,800–$267,100 USD with equity and benefits.

Qualifications

• 5+ years Shipping and operating production software systems.
• Hands-on experience building generative AI apps: structured outputs, tool calls, prompts, RAG.
• Strong enthusiasm for agents/LLMs with opinions on tools and evolving ecosystem.
• Solid fundamentals: APIs, distributed systems, queues, data stores, auth, retries, observability.
• Experience defining evals/metrics for AI systems and launch quality.
• Fluent with AI coding tools and code‑assistant workflows.
• Excellent communication for remote collaboration and explaining AI trade-offs.
• Proficient in languages: Python, Golang, Rust, Java, JavaScript (any).

Responsibilities

• Design, build, and ship advertiser-facing AI features end-to-end.
• Decide how to use generative AI: single-shot calls, workflows, or agent loops.
• Build for failure modes of LLMs: guardrails, retries, cost controls, tracing.
• Define offline/online evals and connect model metrics to outcomes.
• Ensure data isolation, permissioning, auditability, and policy compliance.
• Collaborate with PM, Design, Data Science, ML Platform, and Sales/Ops.
• Write design docs and communicate trade-offs to engineers and non‑engineers.

Skills

Generative AI

LLM calls

Prompt design

Distributed systems

Observability

Python

JavaScript

Tools

Docker

Job description

Reddit's Ads team is seeking a Senior Software Engineer to build AI-powered advertiser experiences on the Agentic Ads Experience platform. You will own features end-to-end, from problem framing to rollout, with a strong emphasis on reliability and guardrails.

The role requires shipping production AI systems, collaborating across PM, Design, Data Science, and Sales/Ops, and communicating trade-offs clearly. Base salary range is $190,800–$267,100 USD with equity and benefits.