Top Software Engineer Jobs in Singapore

Design, implement, and operate production-grade search and streaming infrastructure. Build low-latency, high-throughput ingestion pipelines (Flink/Kafka/Postgres), collaborate with product and global teams, perform code/design reviews, and troubleshoot distributed system performance and resilience.

Design and implement Android applications and libraries, collaborate with product and finance stakeholders to define requirements, own full-cycle development, refactor for maintainability, and ensure secure, reliable, testable mobile solutions.

Design, build, and operate backend services for card issuing, transaction processing, and settlement. Develop scalable, resilient distributed systems and RESTful APIs. Ensure reliability through monitoring, alerting, on-call participation, and performance tuning. Write well-tested code, participate in design reviews, mentor peers, and collaborate with product and regional stakeholders.

Design, build, and maintain scalable Java/Kotlin microservices and event-driven systems for high-throughput global growth initiatives. Collaborate with data scientists and product teams to create data pipelines and analytics, enable A/B testing and feature toggles, improve observability and performance, and ensure secure, compliant backend solutions while mentoring peers.

Design, develop, and enhance payment and transaction systems on a microservice platform. Build high-concurrency, high-availability services using Java/Kotlin, mentor engineers, experiment with new technologies, and improve architecture for risk and fraud detection.

Design, develop, and maintain APIs and checkout features for global payments. Build reliable, high-availability payment processing systems, troubleshoot production issues, optimize critical components, and collaborate with cross‑functional teams and financial partners to ensure seamless merchant integrations and user experiences.

Build and scale backend ledger and reconciliation systems for financial data and transactions. Collaborate with product, design, and engineering to deliver secure, scalable features. Implement data integrity checks, follow security best practices, and use data-driven feedback to evolve product requirements while working closely with finance stakeholders.

Lead technical direction and hands‑on implementation of Airwallex's real‑time risk and fraud detection platform. Design distributed, low‑latency systems; own end‑to‑end delivery; write production Java/Spring Boot code; integrate ML models and feature stores; ensure observability, reliability, and operational excellence; mentor engineers and collaborate across product, data, SRE, and security teams.

Design, build, and operate core transaction risk microservices in Kotlin/Java. Deliver high-concurrency, highly available distributed systems, improve observability, evaluate graph/streaming/ML/LLM technologies, mentor engineers, and participate in on-call incident response to detect and prevent fraud at scale.

Build and maintain Airwallex's 3DS card authentication infrastructure and payment APIs. Design, develop, and operate reliable services, collaborate with global teams and financial partners, troubleshoot production issues, and own critical components of the online payment processing flow.

Design and build Airwallex's global edge infrastructure: API gateway, CDN, DNS routing, and perimeter security. Implement security-as-code, rate-limiting, WAF rules, bot-detection, self-service tooling, and reliability improvements. Collaborate with product, platform, and security teams and ship high-throughput, low-latency services.

Design and build multi-tenant, high-scale backend systems for embedded finance. Own cross-domain features, architect enterprise integrations, collaborate with product and sales, and measure and optimize performance, reliability, and customer-facing solutions.

Design, implement, and deliver production-grade, low-latency streaming ingestion and search platform features. Build and optimize large-scale distributed systems (streaming, storage, partitioning, resilience). Collaborate with product and global engineering teams, perform design/code/performance reviews, translate business requirements into robust engineering solutions, and maintain platform reliability and scalability.

Design and build scalable, high-availability microservices (Java/Kotlin) to support global onboarding and KYC integrations. Collaborate with data, product, and frontend teams to create event-driven data pipelines, define SLOs, improve observability, and ensure secure, compliant systems for customer onboarding and identity verification.

Design and build scalable backend infrastructure for global payments: optimize API gateways, routing, search, notifications, workflows; solve distributed systems challenges, evaluate new technologies, and improve developer experience and performance at scale.

Senior backend engineer for the Onboarding team building scalable, high-availability microservices in Java/Kotlin. Design data pipelines and event-driven architectures, enable analytics and growth initiatives, support A/B testing and feature toggles, and ensure security and regulatory compliance. Collaborate with cross-functional teams, participate in architecture and code reviews, and mentor teammates to improve system reliability and onboarding performance.

Lead architecture and development of backend systems for card products, drive cross-team technical initiatives, own service lifecycle, ensure scalable, secure, high-performance designs, establish best practices, and mentor engineers.

Design and build developer-facing products: APIs, developer portal, docs, and analytics pipelines. Collaborate across product, engineering, and support to improve onboarding and scale. Contribute open-source tools, external services, and incorporate AI to elevate developer experience.

Lead a Singapore-based team to design, build, and maintain scalable data infrastructure and self-service developer tooling. Implement robust, maintainable systems, ensure quality through testing and troubleshooting, collaborate cross-functionally, and mentor engineers while staying current with emerging technologies.

Lead architecture and implementation of Airwallex's edge networking stack (API gateway, CDN, DNS, global accelerators). Define border security (DDoS, WAF, rate limiting), build policy-driven API route management, enforce governance, enable hybrid/multi-cloud traffic engineering, and ensure global-scale reliability and QoS for critical payment and auth paths.

Design, build, and maintain scalable microservices for high‑traffic growth funnels. Collaborate with product, design, and data teams to enable data‑driven experiments, A/B testing, analytics pipelines, and observability. Ensure secure, fault‑tolerant, cloud‑native architectures and mentor peers to improve quality and performance.

Design and implement backend and frontend components for global treasury and payment products using Kotlin/Java or ReactJS. Collaborate with product managers and designers, empathize with customers, and use data to measure and optimize product performance. Contribute to scaling Airwallex's payment infrastructure and shipping high-quality features.

The Principal Software Engineer will lead technical integrity and operational support for Mastercard's RTP platform, focusing on high-impact design, performance improvements, and complex troubleshooting.

Partner with clients to design, build, and deploy production-grade, cloud-native applications that integrate AI and data. Rapidly prototype, iterate, and productionise solutions, collaborate with product and AI teams, and act as a trusted technical advisor while delivering end-to-end solutions.

The iOS Engineer will develop scalable iOS applications, optimize code, lead prototypes, oversee app deployment, and mentor junior engineers.