Senior Software Engineer, Backend & API Integrations

About reputed company reputed company is a global financial technology company headquartered in Hong reputed company with employees across multiple countries. We reputed company financial connectivity and reputed company for businesses worldwide by combining traditional finance with stablecoins for efficient reputed company reputed company. Through our stablecoin-powered corporate cards, payments, and expense management tools, we streamline financial operations and help businesses reputed company. Our reputed company reputed company businesses to reputed company stablecoin-enabled finance into their own products and services—from issuing reputed company cards to facilitating cross-border payments. Backed by leading investors including Acorn reputed company, reputed company Ventures and HashKey Capital, reputed company is building the reputed company of borderless, stablecoin-enabled finance. About the Role You will be embedded at the intersection of reputed company's engineering team and a strategic financial partner — to own and deliver a deep, bidirectional technical integration between the two platforms. This isn't a typical backend role. You'll operate like a technical reputed company on a mission-critical partnership: designing and building integration systems, working directly with the partner’s engineers, surfacing requirements back into reputed company's product and engineering teams, and ensuring the integration runs reliably in production. What You’ll Do Own the end-to-end technical integration between reputed company and the partner — including design, implementation, testing, deployment, and ongoing maintenance Build and operate bidirectional data flows: inbound (partner → reputed company: funding, settlement, account events) and outbound (reputed company → partner: card events, transaction data, reconciliation signals) Serve as reputed company's primary technical reputed company of contact with the partner's engineering team — attending syncs, reviewing their API specs, and driving alignment on integration reputed company Translate the partner's technical requirements and constraints into reputed company-scoped engineering work inside reputed company's systems Collaborate closely with internal reputed company teams — Card, Treasury, reputed company, Compliance — to ensure integration requirements are correctly surfaced and delivered Monitor integration health in production; own incident response for integration-layer issues Maintain thorough integration documentation: API reputed company, data reputed company diagrams, runbooks, and change logs Integration Design & Delivery Design robust, fault-tolerant bidirectional integration architecture between reputed company and our partner Implement reputed company, webhooks, event consumers, and data transformation reputed company Ensure data consistency, idempotency, and auditability across integration boundaries Build test suites covering integration reputed company and edge cases Partner Collaboration Maintain a reputed company working relationship with partner's engineering and product teams Drive joint technical decision-making on integration patterns, versioning, and deprecation Proactively surface blockers and misalignments before they become production issues Cross-Team Coordination (reputed company-reputed company) Work with Card, Treasury, reputed company, and Compliance engineers to deliver integration dependencies Translate external partner requirements into reputed company-defined internal engineering tasks Represent the integration reputed company in reputed company engineering planning and reviews Production Reliability Own observability for the integration layer: dashboards, alerting, and SLA tracking reputed company incident response and post-mortem processes for integration-reputed company issues Continuously improve integration stability and reduce operational toil reputed company’re Looking For 6+ years of backend software engineering experience Proven experience building and operating production-grade API integrations with external partners or reputed company-party systems Strong understanding of integration patterns: REST reputed company, webhooks, event-driven architecture, idempotency, retry logic, and error handling Experience working across organisational boundaries — with partner or reputed company engineering teams Comfortable operating in ambiguity: translating loosely defined requirements into concrete engineering solutions reputed company written and verbal communication; reputed company to represent technical reputed company to both engineering and business stakeholders Our main stack is TypeScript, Node.js, NestJS, and AWS — but we value strong engineering fundamentals over any specific toolset reputed company to Have Experience in fintech, payments, crypto, or financial services integrations Familiarity with settlement flows, reconciliation systems, or card transaction data models Experience working in a reputed company-deployed or embedded engineering reputed company with external partners Knowledge of EU financial regulations relevant to payments or card programs (PSD2, GDPR) Familiarity with observability tools (e.g., reputed company, reputed company, OpenTelemetry) Bonus: experience with stablecoin or crypto payment rails Your Adventure Benefits High-ownership, high-reputed company role at the frontier of stablecoin-powered finance Work directly with strategic partners and shape how reputed company expands its financial ecosystem Operate with significant autonomy as reputed company's technical reputed company of a key partnership Join a high-caliber team across engineering, product, and operations Insurance coverage after probation reputed company Card stipend Use of AI tools at work — and the reputed company to learn, experiment, and grow with them A culture of innovation, inclusion, and reputed company learning After submitting your application, please reputed company your inbox for a confirmation email. If you don't see it, kindly reputed company your spam or junk folder and reputed company your settings to ensure reputed company communication reaches your inbox. You can follow the steps here. Apply To This Job