Top Java Developer Jobs in Singapore

Senior Java developer to build and maintain backend services for enterprise blockchain applications, integrate APIs with React/Vue front ends, design scalable solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams to adopt blockchain best practices.

Optimize blockchain node performance, design and implement core system plugins, collaborate across teams to integrate blockchain solutions, perform performance testing and debugging, and monitor emerging blockchain technologies.

Lead backend development and architecture for a centralized exchange (CEX). Design large-scale, real-time payment and matching systems, resolve critical technical issues, drive middleware and rule engine development, perform technical reviews, implement core architecture, and mentor developers to improve engineering processes and system reliability.

The role requires designing and developing J2EE Enterprise Solutions with a focus on Web API using REST, XML/JSON, and various application architectures.

The role involves Java application development in the financial industry, translating ACCESS programs to Java, performing business analysis, and managing SIT and UAT phases.

Seeking a Senior Java Developer with over 5 years in application development for the banking domain, skilled in Java, AngularJS, and various technologies.

The Java Backend Developer will design, develop, and maintain backend services and APIs, ensuring high performance, security, and scalability in financial applications. They will collaborate with teams, troubleshoot issues, and uphold code quality standards.

As a Senior Java Engineer, you will design, develop, and maintain applications, write integration tests, and collaborate in an agile team.

Lead design and development of scalable backend services using Java Spring Boot and AWS. Architect microservices and APIs, implement cloud-native and serverless solutions, design database schemas, maintain CI/CD, monitor performance, ensure security and compliance with Singapore government standards, mentor juniors, integrate SingPass/CorpPass, and troubleshoot production systems.

Design, develop, refactor, and optimize core backend components for high-concurrency, high-performance systems. Contribute to architecture, full lifecycle development, deployments, monitoring, and cross-team collaboration while researching and implementing scalable solutions.

Design, develop, refactor, and optimize backend system components. Build and maintain high-concurrency, high-performance, and highly available systems. Contribute to architecture, participate in full development lifecycle, research technical solutions, and collaborate with regional teams while sharing best practices.

Seeking a Principal Engineer with 10+ years of experience in Java and full-stack development. Responsible for leveraging strategic IT skills and knowledge in MSA, cloud services, and agile methodologies.

Responsible for designing, developing, and optimizing core system components. Involved in technical innovation, system architecture, and lifecycle participation while collaborating with teams.

Design and build highly available, high-concurrency payment backend systems for OKX Pay. Implement scan-to-pay, transaction processing, crypto/stablecoin on-chain flows, reconciliation, refunds, and robust state transitions. Ensure system stability, security of funds, observability, and drive incident resolution and architectural improvements.

Contribute to design, development, and maintenance of real-time risk control and decisioning services. Implement risk rules, scoring models, and feature pipelines for fraud, AML, and account security. Troubleshoot issues, write technical documentation, and collaborate with Risk Operations and CS teams to investigate cases and improve systems.

Develop, analyze, design, test, and implement application systems. Perform feasibility studies, estimate time/cost, provide user and operational support, recommend security and process improvements, consult with stakeholders, coach junior analysts, and ensure compliance with policies and risk controls.

The role involves leading development teams, coding in Java, reviewing technical solutions, and ensuring compliance in application delivery related to payments integration.

Design, develop, and optimize high-performance Java backend systems. Contribute to architecture, implement core modules, troubleshoot production issues, perform code reviews, and improve scalability, availability, and reliability of distributed financial or blockchain systems.

Design, develop, and maintain Java/Rust automated test frameworks for margin trading and risk systems. Plan and execute test strategies, manage test environments, perform functional, security, and performance testing, debug high-concurrency distributed systems, and collaborate with engineers and product teams to improve product quality.

Lead QA automation for Futures across web, desktop, and mobile: design and execute test plans, set up test environments, write automated tests, perform security and performance testing, root-cause analysis, and improve testing processes across the SDLC.

Early-career backend engineer role in the Binance Accelerator Program. Contribute to product development and maintenance, write and maintain interface documentation, troubleshoot QA issues, and assist customer service with problem resolution and classification for system improvements.

Design and build backend microservices for real-time fraud detection, transaction monitoring, and risk analysis. Integrate ML models and risk scoring engines, support scalable distributed systems, and leverage AI-assisted development and LLM/agent tools for risk automation.

Design and implement automated tests, perform manual backend investigations, reproduce and track defects, conduct root-cause analysis, document test scenarios, expand scripted coverage, and improve QA processes while collaborating with developers, product managers, and stakeholders.

Design, build, and maintain scalable, reliable Java-based backend systems through full software lifecycle. Work on distributed system design, databases (MySQL and NoSQL), messaging middleware, deployment automation, monitoring, performance optimization, and cross-team collaboration with comprehensive system documentation.

Senior QA Automation Engineer responsible for designing, building, and maintaining Rust/Java-based automated test frameworks. Participate across the SDLC to create test plans, execute black-/white-box, security, performance, and mobile testing, diagnose root causes, and improve testing processes. Collaborate with engineers, PMs, designers, and operations to ensure system reliability across web, desktop, and mobile platforms. Apply AI models in testing where applicable and coordinate with global stakeholders in English and Mandarin.