Etsy

Senior Software Engineer I, Decision Systems

Brooklyn, New York · Senior · Full-time

Sponsorship not specified$164k-$193kDetected 4 days ago

TypeScriptPHPBackend DevelopmentCode ReviewSQLRESTMachine LearningA/B TestingLeadershipCollaboration

About the role

Company Description Etsy is the global marketplace for unique and creative goods.
As an Etsy Inc. employee, whether a team member of Etsy or Depop, you will tackle unique, meaningful, and large-scale problems alongside passionate coworkers, all the while making a rewarding impact and Keeping Commerce Human.
Salary Range: $164,000.00 - $193,000.00 What's the role?

Lead projects aligned to your squad's objectives in the Trust & Safety space.
Design and build decisioning services and pipelines that combine rules, model outputs, and human feedback into high throughput, low-latency systems.
Collaborate across Risk, Operations, and other engineering teams to build for the external users who experience the outcomes of these decisions.
Decision Systems sits within Etsy's Detection & Enforcement vertical, partnering closely with ML Engineering and Operations teams to build and evolve the systems that enact decisions at scale.
Highly collaborative and cross-functional, building strong relationships with PMs, data scientists, analysts, and operations partners to align on risk strategies and enforcement behavior.
As a Senior Engineer, your day-to-day involves a mix of technical leadership, hands-on implementation, and cross-functional collaboration focused on building robust and secure enforcement systems.
Design and build decision systems
Implement and evolve services that evaluate signals, scores, and rules to produce consistent enforcement outcomes (e.g., holds, reviews, limitations).
Collaborate across teams
Partner with Ops, Analytics, ML and Product to clarify requirements, align on tradeoffs, and share impact.

$164,000.00 - $193,000.00
In addition to salary, you will also be eligible for an equity package, an annual performance bonus, and our competitive benefits that support you and your family as part of your total rewards package at Etsy.

You are proficient in at least one backend language such as PHP, a frontend language like Typescript, and a query language like SQL - and you're comfortable learning the rest of our stack as needed.

Purposeful, focused on protecting the marketplace while minimizing unnecessary friction for trustworthy buyers and sellers.
Data-informed, using logs, metrics, and feedback from Ops to iterate on controls and improve decision quality over time.
Mentor and elevate others
Mentor other engineers via pairing, code reviews, and sharing context.
Help others break down problems and reason about risk tradeoffs.
Of course, this is just a sample of the kinds of work this role will require! You should assume that your role will encompass other tasks, too, and that your job duties and responsibilities may change from time to time at Etsy's discretion, or otherwise applicable with local law.
If, due to a disability, you need an accommodation during any part of the application or interview process, please let your recruiter know.

While Etsy supports visa sponsorship, sponsorship opportunities may be limited to certain roles and skills.

This listing is sourced directly from Etsy's careers page and normalized into a canonical job model.