Technical Solutions Engineer

Responsibilities: — Own the accuracy, completeness, and clarity of Polygon’s API and integration documentation, keeping it current as the platform evolves — Build quickstarts, sample code, and reference architectures to enable developers, including those using AI coding tools, to integrate independently — Serve as the primary technical resource in sales conversations alongside Business Development and throughout partner integrations, documenting reusable solutions — Lead signed partners through requirements intake, provisioning following KYB and KYC approval, sandbox testing, webhook configuration, and go-live validation in partnership with Integration Delivery — Develop deep expertise across ramps and bank rails, wallets and accounts, custodial and non-custodial flows, virtual accounts, deposit addresses, cross-chain movement, and webhooks — Build sample applications and demo environments to support Business Development and Sales — Identify gaps in the API and integration experience and provide clear, prioritized recommendations for Product and Engineering — Use AI and internal tooling to streamline onboarding, provisioning, and frontline support Requirements: — Hands-on experience with US payments, including ACH, RTP, wire transfers, card networks, or equivalent rails, and a working understanding of settlement and reconciliation — Experience in one of the following: leading customer API integrations from kickoff to production at a payments, fintech, or financial infrastructure company; owning API documentation, SDKs, or developer support at an API-first payments company — Strong API and troubleshooting skills, including reading logs, debugging webhooks, and reasoning through authentication and retry behavior, with tools such as Postman, Bruno, or Datadog — Excellent technical writing skills with the ability to document complex systems clearly for external developers — Regular use of AI tools to build, document, and automate work — Comfort operating in a fast-moving environment where the platform and documentation are actively evolving Benefits: — Experience with stablecoins or digital assets, particularly wallets and onchain settlement is a plus — Experience at an early-stage company, building processes or programs from the ground up is a plus — Coding ability to build demo applications is a plus — Experience with documentation platforms such as Mintlify is a plus — Familiarity with KYB and KYC tooling is a plus