Technical Solutions Engineer

Polygon Labs; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Polygon Labs is building a leading fintech infrastructure for onchain payments and the Polygon Open Money Stack. We are seeking a Technical Solutions Engineer to own the developer experience and API integration journey for partners, including documentation, sample code, and go-live support.

Reporting to the VP, Account Management & Support, you will enable partners to integrate with Polygon with minimal direct assistance, working across Engineering, Product, and Sales to improve the

Qualifications

• Hands-on experience with US payments (ACH, RTP, wires, card networks) and settlement/reconciliation.
• Experience leading API integrations from kickoff to production at payments/fintech infra company.
• Owning API documentation, SDKs, or developer support at an API-first payments company.
• Strong API troubleshooting and log-reading skills, understanding auth and retry behavior with tools like Postman/Datadog.
• Excellent technical writing to document complex systems for external developers.
• Regular use of AI tools to build, document, and automate work.
• Comfort operating in a fast-moving environment where platform and docs evolve.

Responsibilities

• Own API and integration documentation accuracy and updates.
• Build quickstarts, sample code, and reference architectures for developers (including AI tooling users).
• Serve as the primary technical resource in sales conversations alongside Business Development.
• Lead signed partners through requirements intake, provisioning after KYB/KYC, sandbox testing, webhook config, and go-live validation.
• Develop deep platform knowledge across ramps/bank rails, wallets/accounts, custodial flows, and webhooks.
• Create demos and enablement environments to support Business Development and Sales.
• Provide product feedback to close API gaps with clear recommendations.
• Use AI and internal tooling to streamline onboarding, provisioning, and frontline support.

Skills

US payments experience

API integrations leadership

API documentation ownership

API troubleshooting

Technical writing

AI tooling usage

Fast-moving environment

Tools

Postman

Bruno

Datadog

Mintlify

Job description

About Polygon Labs

Polygon Labs is a global blockchain payments company building and operating infrastructure to move money instantly, reliably, and at internet scale, with the mission to move all money onchain. It is building the Polygon Open Money Stack, an open and integrated stack of services and technologies to instantly and reliably move money anywhere, and put it to work. Its infrastructure has facilitated trillions of dollars in onchain value transfer and supported millions of transactions daily for some of the globe's largest banks, fintechs, enterprises, and consumer applications.

About the Role

As fintechs and financial institutions integrate the Polygon Open Money Stack, the quality of the integration experience increasingly shapes how quickly partners reach production. Polygon operates as a US-regulated payments platform, licensed in 48 states through 37 money transmitter licenses and 11 exemptions, and our partner base is growing.

Today, many partner integration questions are routed to Engineering. This slows product development and leads to the same questions being answered repeatedly. The Technical Solutions Engineer will own the technical experience of building on Polygon: API and integration documentation, the integration path, technical support during the sales process, and bringing signed partners to production.

Our standard is a best-in‑class developer experience in payments, where a capable developer, including one working with AI coding tools, can integrate with minimal direct support.

This is a senior individual contributor role reporting to the VP, Account Management & Support.

Responsibilities

• API and integration documentation: Own the accuracy, completeness, and clarity of Polygon’s API and integration documentation, and keep it current as the platform evolves.

• Self‑serve integration: Build quickstarts, sample code, and reference architectures that enable developers, including those using AI coding tools, to integrate independently.

• Technical expertise: Serve as the primary technical resource in sales conversations alongside Business Development and throughout partner integrations, then document solutions so they’re reusable.

• Partner go‑live: 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.

• Platform knowledge: 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.

• Demos and enablement: Build sample applications and demo environments that support Business Development and Sales.

• Product feedback: Identify gaps in the API and integration experience, and turn them into clear, prioritized recommendations for Product and Engineering.

• Automation: 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, 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

Preferred Qualifications

• Experience with stablecoins or digital assets, particularly wallets and onchain settlement

• Experience at an early‑stage company, building processes or programs from the ground up

• Enough coding ability to build demo applications

• Experience with documentation platforms such as Mintlify

• Familiarity with KYB and KYC tooling

Why Join

Cross‑border payments remain slow, expensive, and opaque. Polygon is bringing regulated fiat access, wallets, and onchain settlement together into one integrated stack, and partners are building on it today. In this role, you’ll work closely with Product, Engineering, and Business Development leadership and set the standard for how partners integrate with Polygon.