Senior Backend Engineer, ISV (Product Infrastructure)
Polymarket
Senior Backend Engineer, ISV (Product Infrastructure) at Polymarket is a full time role based in New York, NY, United States. It was published on 24 July 2026 and was open at last check.
| Role | Senior Backend Engineer, ISV (Product Infrastructure) |
|---|---|
| Company | Polymarket |
| Location | New York, NY, United States |
| Employment type | Full Time |
| Published | 24 July 2026 |
| Status | Open at last check |
About Polymarket
Polymarket is the world's largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs. Built as a peer-to-peer marketplace with no centralized “house,” Polymarket aggregates diverse opinions into transparent, market-based probabilities that reflect collective expectations about the future.
We’re growing fast: both in volume ($21B traded in 2025) and in adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media, powered by fast, reliable, and deeply technical market infrastructure.
About the role
Polymarket is looking for a backend/product engineer to own the core domain APIs and data models that power our consumer-facing product.
You’ll work at the intersection of backend infrastructure and product, shipping the primitives that frontend, mobile, and product teams build on top of — with high ownership and a strong bias toward execution.
What you’ll do
- Design core domain APIs: Build and evolve the APIs and data models that underpin Polymarket’s consumer product at scale.
- Build real-time infrastructure: Develop gRPC/Connect services and real-time streaming systems (e.g., WebSocket-to-gRPC-stream migrations) alongside event and notification infrastructure.
- Ship end-user features: Partner directly with frontend, mobile, and product teams to deliver features like personalization, search, and live data feeds.
- Unify fragmented systems: Consolidate fragmented services and APIs into cleaner, reusable primitives that speed up future feature development.
- Balance debt and delivery: Pragmatically balance technical-debt cleanup with shipping new product surface area under tight deadlines.
- Collaborate cross-functionally: Work closely with engineers across product, infra, and data to ensure tight integration with the broader platform.
What we’re looking for
- Backend/product engineering experience designing and evolving domain APIs and data models for a consumer-facing product at scale.
- Hands-on experience with gRPC/Connect and real-time streaming (e.g., WebSocket-to-gRPC-stream migrations) and event/notification infrastructure.
- Track record partnering directly with frontend, mobile, and product teams to ship end-user features.
- Experience unifying fragmented services and APIs into cleaner, reusable primitives.
- Pragmatic judgment for balancing technical-debt cleanup with shipping new product surface area under P0 deadlines.
- (Plus) Experience at a high-growth consumer product company or marketplace.
- (Plus) Experience deploying systems in cloud environments (AWS/GCP) and using containers.
Benefits
- Competitive salary & equity
- Unlimited PTO
- Full Health, Vision, & Dental coverage
- 401k match
- Hardware setup — new MacBook Pro, big display, & accessories
Create your free OnJob profile to apply — we'll take you to Polymarket's application after sign-up. · Posted 24 Jul 2026.
Senior Backend Engineer, ISV (Product Infrastructure) at Polymarket — questions answered
What does the Senior Backend Engineer, ISV (Product Infrastructure) role at Polymarket pay?
Polymarket does not publish a salary on this Senior Backend Engineer, ISV (Product Infrastructure) listing, so OnJob shows no figure for it rather than an estimate. For what this role pays across the market, the OnJob salary guides aggregate the live listings that do disclose pay.
Where is the Senior Backend Engineer, ISV (Product Infrastructure) role at Polymarket based?
Polymarket lists this Senior Backend Engineer, ISV (Product Infrastructure) role in New York, NY, United States, advertised as full time work at that location. Larger employers sometimes cover several sites under one city name, so confirm the exact office with Polymarket before you apply.
Is the Senior Backend Engineer, ISV (Product Infrastructure) role at Polymarket still open?
The Senior Backend Engineer, ISV (Product Infrastructure) posting at Polymarket was open at OnJob's last check of the employer's careers page, having been published on 24 July 2026. OnJob re-checks source listings on each build and marks a role closed once it disappears, but listings can close without notice, so the employer's own page is the final word.
How do you apply for the Senior Backend Engineer, ISV (Product Infrastructure) role at Polymarket?
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