Senior Growth Platform Engineer (Go/TS, ML)

Polymarket; United States; On-site; USD 150,000 - 190,000; Full time

Benefits offered by this job

Competitive salary & equity

Unlimited PTO

Full Health, Vision, & Dental coverage

401k match

Hardware setup: new MacBook Pro, big显示

Job summary

Polymarket is expanding its Growth Engineering team. We seek a Sr. Staff Engineer who will own data infrastructure, analytics pipelines, and end-to-end growth features using Go and TypeScript. You’ll design and ship ML-powered experiments, guide technical direction, and work with a high-autonomy, high-impact team.

You’ll write production-grade code daily, collaborate across analytics, martech, and product, and help scale our marketplace data systems to support massive user growth.

Qualifications

• 10+ years of experience spanning full-stack development, data and analytics infrastructure, and martech systems.
• Production-level expertise in Golang and TypeScript. You write both regularly and know where each one has edges.
• A track record of designing analytics and data pipelines that teams rely on in production, not side projects or internal dashboards nobody checks.
• Hands‑on experience building and shipping ML systems. You've taken models past experimentation and into production.
• Strong systems thinking and the judgment to make architectural calls between refactor and rewrite, talking through real trade‑offs rather than defaulting to a preference.
• Fluency with AI‑assisted development. You use these tools every day and you're faster and more accurate because of it.
• Experience setting technical direction for a growth or data team, with high‑stakes calls made under ambiguity and limited oversight.
• (Plus) Prior experience on a marketplace, fintech, or consumer product with meaningful user scale.
• (Plus) Familiarity with prediction markets, financial products, or real‑time data systems.
• (Plus) People management experience. You don't need it for this role, but it’s useful context.

Responsibilities

• Build and maintain Go-based data pipelines that power growth analytics, from event ingestion to reliable reporting that the team actually trusts.
• Audit existing martech integrations, identify what's underperforming or redundant, and replace or retire tooling with clear-eyed judgment.
• Architect and ship experimentation infrastructure that lets the team run clean A/B tests, measure results accurately, and move fast without breaking measurement.
• Ship full-stack growth features in Go and TypeScript, owning the work from backend service to frontend implementation without handing off.
• Bring ML where it adds real value, including personalization, predictive modeling, and experiment analysis, and build those systems into production, not just prototypes.
• Review experiment designs and code from other growth engineers, raising the quality of what ships and how the team thinks about building.
• Use AI tools daily and seriously, applying them to accelerate your own output and set a higher bar for how the team works.

Skills

Golang

TypeScript

Data pipelines

ML systems

Analytics/martech

Full-stack Go/TS

Experimentation infra

AI-assisted development

Architectural decisions

Marketplace/fintech experience

Tools

Go

TypeScript

Job description

Polymarket is expanding its Growth Engineering team. We seek a Sr. Staff Engineer who will own data infrastructure, analytics pipelines, and end-to-end growth features using Go and TypeScript. You’ll design and ship ML-powered experiments, guide technical direction, and work with a high-autonomy, high-impact team.

You’ll write production-grade code daily, collaborate across analytics, martech, and product, and help scale our marketplace data systems to support massive user growth.