Top Backend Developer Jobs in Singapore

Design, build, and operate high-performance Java backend services and distributed financial systems. Responsibilities include developing Spring and Spring Boot APIs, optimizing latency and asynchronous processing, integrating financial platforms, implementing messaging and event-driven flows, conducting performance testing, and maintaining code quality through testing, reviews, and CI/CD. The role also involves shaping wealth-management capabilities integrated with e-banking, ensuring security, auditability, reliability, and end-to-end ownership across the software lifecycle.

Lead security architecture for scalable, highly available backend systems. Design and optimize traffic risk-control, anti-fraud, and account-security platforms; conduct architecture reviews; improve system stability and security under high concurrency; and collaborate with product, business, and engineering teams to deliver mission-critical security capabilities.

Develop backend blockchain functionality for Cardax DEX on the Cardano blockchain. Write and maintain smart contracts in Plutarch and Haskell that define the constraints and conditions for decentralized token exchange without a central entity.

Develop and maintain large-scale backend infrastructure and distributed software systems. Responsibilities include architecture upgrades, performance tuning, incident troubleshooting, system refactoring, and writing clean, maintainable Java code. The role also guides junior engineers, shares technical knowledge, and collaborates across teams.

Design and lead backend application architecture and development for spot trading systems. Responsibilities include coding in Java, integrating databases and messaging middleware, debugging, testing, maintenance, migration, documentation, stakeholder collaboration, technical support, and mentoring junior developers. The role emphasizes distributed systems, enterprise application standards, and scalable architecture within a global blockchain ecosystem.

Designs and owns architecture for Live Sports and Discover APIs, develops highly available and scalable backend systems, and creates low-latency solutions for millions of customers. The role leads strategic projects, mentors engineers, establishes engineering best practices, collaborates cross-functionally, and leverages AI to improve development quality and productivity.

Design, build, and operate Java backend services, REST APIs, compliance capabilities, and analytics products. Develop blockchain data pipelines, model relational and NoSQL data, optimize queries, and improve production reliability, observability, and performance. Translate regulatory requirements into technical solutions while collaborating with compliance and product specialists. The role may also involve AWS infrastructure, Kafka, crypto integrations, and AI-assisted development tools.

Develop and optimize Java backend systems, contribute to scalable and fault-tolerant architecture, solve high-concurrency technical challenges, and participate throughout the software development lifecycle. Responsibilities include design, coding, refactoring, testing, deployment, monitoring, collaboration, and knowledge sharing.

Build and maintain scalable backend platforms, APIs, and infrastructure across Singapore and Australia. Lead software delivery from architecture and design through deployment and maintenance, improve code quality and development processes, and collaborate cross-functionally to deliver customer-focused products. Drive innovation, system reliability, security, scalability, and operational efficiency while supporting product and business growth.

Design, build, and operate highly reliable, scalable, event-driven systems for card issuing, transactions, and settlement. Lead architecture, drive platform improvements, ensure operational readiness, mentor senior engineers, and influence cross-team technical direction.

Design, build, and maintain scalable, secure backend services for card issuance and spend management. Own end-to-end feature delivery, contribute to architecture, write reliable testable code, ensure observability and API quality, collaborate cross-functionally, and mentor other 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.

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 design and implementation of a next-generation billing platform. Architect and develop microservice components, ensure high concurrency, availability and performance, collaborate with product and cross-functional teams, introduce new technologies, and build/manage the technical team and coding standards.

Build and operate backend services for global liquidity management, safeguarding, investments and cash data. Design scalable microservices, event-driven pipelines, APIs and persistence layers. Ensure correctness, observability, testing, controls, reconciliation and compliance. Collaborate with cross-functional stakeholders, participate in on-call rotation, and deliver end-to-end features from design to production.

Develop and maintain high-performance C# backend services, APIs, and financial platforms. Integrate financial systems and third-party services, optimize performance, ensure security and data integrity, troubleshoot development and production issues, and support releases and change management. Participate in Agile planning and ceremonies, conduct code reviews, testing, and CI/CD activities, and provide post-implementation support across global teams.

Lead design and implementation of production-grade stablecoin infrastructure: key management, transaction signing, gas fee handling, mint/burn/transfer lifecycle, multi-chain ledgering, and integration with FX and payment systems. Collaborate across product, infrastructure, and compliance to deliver secure, auditable services.

Design, develop, and maintain high-performance, secure Java backend services and APIs. Ensure reliability, scalability, and cost-efficiency across microservices, databases, messaging systems, and capacity planning. Troubleshoot, profile, benchmark, and optimize systems (including ML applications) and collaborate with Kazakhstan stakeholders.

Own and evolve an evaluation platform for AI systems, including automated regression analysis, quality gates, data governance, security, reusable SDKs, workflow APIs, observability, and reliability tooling. Build secure, auditable access patterns with PII masking and least-privilege controls. Apply machine learning and LLM techniques to replace brittle rules, while operating distributed systems and data infrastructure at scale.

Build and operate scalable backend services and APIs for an AI-driven legal platform. Responsibilities include asynchronous message-queue processing, document data pipelines, PostgreSQL schema and query optimization, authentication and authorization, search and vector storage integration, observability, automated testing, CI pipelines, technical design, production support, and on-call participation.

Develop and maintain backend services using Java, microservices, Spring Boot, REST APIs, AWS, and Kubernetes. Apply object-oriented programming, test-driven development, JUnit, build automation, and CI/CD practices. Collaborate with a leading client and communicate effectively with technical and business stakeholders. Candidates must be based in Singapore and able to start within four weeks.

Design and build AI agent applications, optimize retrieval systems, collaborate with teams, and explore new AI intelligence forms.

The Backend Software Engineer will develop and maintain backend systems for data processing related to coffee farming, utilizing Python and PostgreSQL. Responsibilities include feature development, problem-solving, and adapting systems to regulatory changes while ensuring system resilience.

As a Senior Software Engineer, you'll design and maintain backend systems for DNA sequencing instruments, develop APIs, and enhance engineering practices while mentoring junior staff.

Lead backend architecture and build scalable, high-concurrency services and APIs (Node.js) powering web and mobile. Own components end-to-end, manage CI/CD and infrastructure (IaC, containers, cloud), improve reliability, and collaborate with PM/design to deliver core features like live interactions and checkout.