Top Software Engineer Jobs in Singapore

Lead design and build of high-performance distributed data infrastructure and AI enablement platforms. Optimize systems internals and JVM performance, implement lakehouse and real-time streaming, develop scalable vector indexing and AI knowledge platform, own SDLC for petabyte-scale systems across global regions, drive engineering best practices, and mentor mid-level engineers.

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 and build cloud cost management and security/access platforms: billing and cost-attribution pipelines, self-serve cost dashboards, anomaly detection, cost-optimization and automated rightsizing, and Just-In-Time access and credential management for production cloud and CI/CD environments.

Design, build, and operate the citizen‑developer platform and workflow infrastructure. Create self‑serve tooling, secure SDLC guardrails, Temporal‑based workflows, Kubernetes/GitOps foundations, and documentation. Partner with application teams, run on‑call and incident response, and improve developer experience and platform reliability at scale.

Own end-to-end design and development of scalable payment and treasury systems, shape APIs and architecture, drive production excellence, and collaborate cross-functionally to build customer-facing fintech solutions and AI-enabled automation.

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.

Build and maintain Airwallex's iOS app: design and implement enterprise iOS applications and libraries, define requirements with product and business teams, own full-cycle product development, refactor for maintainability and extensibility, integrate data protection and regulatory best practices, and ensure high test coverage and CI/CD automation.

Lead design and implementation of a next-gen billing platform: analyze requirements, design architecture, develop core components on a microservice framework, ensure high concurrency/availability, introduce new technologies, and build/manage the technical team and coding standards.

Lead architecture, development, and operation of Airwallex's data and AI platforms. Drive company-wide data platform strategy, build scalable multi-region data pipelines, promote best practices, mentor engineers, and enable data-driven decision making and AI readiness across the organization.

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.

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, 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.

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.

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, 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.

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.

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.

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 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.