26 days ago
Remote, United StatesSenior / Staff+
H1B sponsor
Responsibilities
- Design and build APIs, SDKs, embedded components, and reusable platform modules for external developers.
- Create secure browser, iOS, and Android integration patterns using iframes, web views, and native applications.
- Own the developer journey from credential acquisition through live transaction completion, including sessions, authentication, quotes, payment methods, transaction state, and errors.
- Build reference applications, sandboxes, documentation, logging, and observability that improve developer adoption and reduce implementation support.
- Establish versioning, backward compatibility, migration, retry, idempotency, state-recovery, and graceful-degradation strategies for distributed payment flows.
- Operate and evolve payment-critical software while measuring integration success, reliability, API and SDK adoption, and developer experience.
Requirements
- Experience building APIs, SDKs, embedded components, or integration tooling used by third-party developers.
- Strong JavaScript and TypeScript fundamentals with production client-side or SDK infrastructure experience.
- Deep browser or mobile application knowledge, including sessions, storage, cross-origin communication, and embedded experiences.
- Experience with API and SDK design, versioning, backward compatibility, documentation, error design, and safe migrations.
- Distributed-systems experience handling duplicate, delayed, or out-of-order events and failing dependencies.
- Ability to turn complex platform capabilities into understandable, adoptable developer interfaces and own software through launch and production support.
- Preferred experience includes payment APIs, checkout SDKs, secure iframes, web views, postMessage, cross-platform SDKs, sandboxes, webhooks, idempotency, transaction state machines, authentication, identity, KYC, cryptocurrency, wallets, or digital assets.
- Familiarity with TypeScript, Node.js, React, GCP, PostgreSQL, Redis, and Kubernetes is preferred.
Benefits
- Competitive salary package, equity package, and performance-based equity bonus.
- Flexible time off, year-end company-wide recharge period, birthday leave, and enhanced parental leave.
- Fully remote or hybrid work from a nearby Moonbase, with location-specific commuter, cycling, or EV benefits where applicable.
- Pension contributions, private healthcare, Wellhub wellness membership, home-office setup allowance, and remote-working allowance.
- Enterprise access to Claude, ChatGPT, Gemini, and other AI tools.
- Lunch credit for office days, monthly product budget, zero-fee crypto transactions, and a $1,000 annual training budget.
- Employee referral program, High Potential Program, regular remote company offsites, and other development opportunities.
Categories
About MoonPay
MoonPay builds crypto payment infrastructure for consumers and businesses, offering fiat on- and off-ramps, stablecoin tools, and APIs/SDKs for checkout and wallets. Users can buy, sell, and transfer digital assets using cards, Apple Pay, PayPal, and Venmo, with built-in KYC/AML and licensing in the U.S., UK, EU, Canada, and Australia. Founded in 2018 and privately held, the company operates remotely and powers integrations for many Web3 and fintech products.