Java Core Software Engineer

Join our dynamic engineering team at NCS in Singapore as a Software Engineer specializing in Java Core. We are looking for a meticulous and analytical professional who will design, develop, and maintain high-performance Java applications. You will adhere to best practices in software architecture and ensure top-notch code quality while collaborating with cro…

Join Speechify as a Senior Software Engineer, where you will play a pivotal role in enhancing our core experiences. You will collaborate with a dynamic team to develop innovative software solutions that improve user engagement and satisfaction. If you are a passionate engineer with a knack for problem-solving and a desire to impact millions of users, we invite you to apply!

Join us as a Core Java Developer, where you will play a key role in designing, developing, and maintaining robust backend applications tailored for the banking sector. Leveraging Core Java, Spring Framework, and Spring Boot, you will work within a microservices architecture to build and integrate RESTful APIs and event-driven services utilizing Kafka, ensuring support for high-volume banking transactions and systems. Your expertise will help in developing, deploying, and managing microservices in containerized environments using Docker and Kubernetes. Collaboration with business analysts, architects, and cross-functional teams will be essential to deliver secure and high-performance solutions that meet stringent banking requirements. You will also be responsible for ensuring code quality through unit testing, code reviews, performance optimization, and adherence to enterprise development standards.

Virtu Financial is a premier financial services firm that harnesses state-of-the-art technology to provide liquidity across global markets and deliver innovative, transparent trading solutions to our valued clients. As a prominent market maker, Virtu ensures deep liquidity that contributes to the efficiency of markets worldwide. Our proficiency in market structure, extensive diversification, and advanced execution technology empower us to offer competitive bids and offers across more than 19,000 securities, spanning over 235 venues in 36 countries. The Role:Join our dynamic Software Development team, where you will play a pivotal role in creating sophisticated trading tools that enable the operation of high-performance systems utilized in financial marketplaces globally. The Core Developer position emphasizes the design and development of our trading system’s core order management protocol, overseeing internal messaging processes and establishing connectivity with external trading destinations.

About SonarSource At SonarSource, we are at the forefront of agent-centric software development, pioneering advancements in AI-driven code review and verification. Our mission is to tackle a vital challenge: ensuring that software created by AI-assisted developers and autonomous agents is dependable, secure, and maintainable.We seamlessly integrate with leading technologies like Claude Code, Codex, Cursor, GitHub Copilot, Gemini, and Devin, empowering over 75% of Fortune 100 companies to develop reliable and compliant software. With Sonar, clients experience a 44% reduction in outage reports attributed to AI-generated code.We believe that code verification is the crucial element missing in the Agent-Centric Development Cycle (AC/DC). Major industry players such as Nvidia, ServiceNow, Booking.com, Goldman Sachs, AstraZeneca, and Ford rely on us for independent, explainable, and consistent review and governance of their AI-generated code through our innovative products, including:SonarQube: The premier AI code review and verification platform.SonarQube Foundation Agent: Leading the charge in agent-based software repair.SonarSweep & Sonar Context Augmentation: Delivering enterprise-level context and constraints for agent effectiveness.Our teams are distributed across key global hubs, including Austin, Bochum, Dubai, Geneva, London, Singapore, Tokyo, and Washington D.C. We embody a culture we call CODE:Committed to our customers and community.Obsessed with quality.Deliberate in our decisions.Effective as one team.With over $400M in revenue and a trajectory of profitable growth, we are constructing the backbone of the AI software revolution. If you are eager to make a significant impact, thrive in a fast-paced environment, and wish to work at the leading edge of AI, we would love to connect with you. Position Overview As a vital member of our engineering teams, you will play a pivotal role in enhancing SonarQube Cloud and SonarQube Server, ensuring they are the best tools for Code Quality and Security. Your contributions will involve developing new features that deliver high-quality products and services, empowering our users to write superior software.

Join Airwallex as an Engineering Lead in Core BankingAt Airwallex, we are redefining the way global businesses manage their finances. As a unified payments and financial platform, we empower over 200,000 companies worldwide—ranging from Brex to SHEIN—with integrated solutions for business accounts, payments, treasury management, and more.Founded in Melbourne, our team consists of over 2,000 innovative professionals across 26 global offices. With a valuation of US$8 billion and support from leading investors like T. Rowe Price and Visa, we are at the forefront of transforming the global payments landscape. If you are ready to undertake challenging and impactful work, we want you on our team.Our Core ValuesWe seek builders with entrepreneurial spirit who are eager to make a significant impact and take ownership of their work. You bring expertise and critical thinking, motivated by our mission and operating principles. You thrive in a fast-paced environment, demonstrate curiosity, and make data-driven decisions that balance speed with thoroughness.With a humble and collaborative attitude, you will turn innovative ideas into tangible products and drive projects through to completion. You embrace AI to enhance your work and solve problems efficiently. Here, you will face complex challenges alongside exceptional colleagues while advancing your career in the future of global banking. If this resonates with you, let’s innovate together.The Core Banking TeamOur Core Banking Platform team plays a pivotal role in supporting Airwallex's global operations, ensuring smooth client wallet transactions and accurate ledger management. Based in Singapore, our agile team develops a high-performance, multi-currency wallet platform that fuels the growth of Airwallex's offerings, including global transfers, payment processing, card issuance, and lending solutions. Together, we not only create impactful products but also enhance our operational processes for greater efficiency.Your ResponsibilitiesLead and Mentor: Provide guidance and support to a talented team of engineers, promoting collaboration and high performance.Design and Develop: Architect and implement scalable solutions for our Core Banking platform.Drive Innovation: Foster a culture of continuous improvement and innovation within the team.

Activate Interactive Pte Ltd seeks a Senior Software Engineer with deep experience in Java and Kotlin. This position is based in Singapore and centers on building new solutions and refining current products. Key responsibilities Partner with cross-functional teams to deliver software projects from concept to launch Shape architectural choices and guide technical direction Lead the development of new features using Java and Kotlin Enhance existing products and handle ongoing maintenance tasks Requirements Solid track record in software development with both Java and Kotlin Experience working within an agile team Strong collaboration skills and the ability to communicate technical concepts clearly Proactive approach to taking initiative and moving projects ahead Team culture The team values open collaboration and a commitment to continuous improvement. Colleagues support each other's growth and focus on achieving results together in a lively workplace.

Join Wise as a Java Software Engineer, where you will be part of a dynamic team committed to building innovative financial solutions. We seek a talented individual who is not only proficient in Java but is also fluent in Japanese, enabling effective communication within our international team.Your primary responsibilities will include designing, developing, and maintaining high-quality software applications, collaborating with cross-functional teams, and ensuring optimal performance of our systems. If you are passionate about technology and eager to contribute to a mission-driven company, this is the perfect opportunity for you!

Join our innovative team at ncs3 as a Software Engineer specializing in Java. In this role, you will have the opportunity to develop and maintain high-quality software solutions that meet the needs of our clients. Your contributions will directly impact our projects and enhance our service offerings.

Join Wise as a Senior Software Engineer I specializing in Java, where you will play a pivotal role in developing innovative software solutions that enhance our global financial services. At Wise, we aim to make money transfer faster and more affordable for everyone.In this role, you will leverage your expertise to design, implement, and optimize backend systems while collaborating with cross-functional teams to deliver high-quality software. Your ability to solve complex challenges and deliver robust solutions will be crucial to our mission of providing seamless financial services.

Join our innovative team at ncs3 as a Software Engineer specializing in Java and SQL. In this pivotal role, you will contribute to the development of robust software solutions that drive efficiency and effectiveness across various sectors.

Role Overview ncs3 is hiring a Senior Software Engineer with a focus on Java in Singapore. This role centers on building and supporting software that addresses real user needs. What You Will Do Design, develop, and maintain software solutions using Java Work closely with colleagues from different functions to deliver reliable applications Contribute ideas to improve product quality and user experience Location Based in Singapore

“Make every logistics journey your best one yet” - QuincusThe Company.Established in 2014, Quincus is an innovative B2B supply chain operating SaaS platform located in Singapore. We tackle the pressing challenges of today’s global supply chain using cutting-edge technology. By leveraging AI and machine learning, we have transformed the logistics process into a fully digitized and optimized experience, providing our customers with complete transparency of their supply chain.Founded by visionary entrepreneurs with over a decade of experience in technology, Quincus is spearheaded by Chief Product Officer Katherina-Olivia Lacey, who is driving a technological revolution while championing women in the supply chain sector. Our CEO, Jonathan E. Savoir, was recognized in Forbes' 30 Under 30 Asia List in 2020 and actively participates on the boards of several startups.The Opportunity.As our company continues to expand, we are seeking a skilled Senior Java Engineer to enhance our team and elevate our products to new heights. The Engineer will engage in multiple stages of the application development lifecycle, from initial concept and design to testing and deployment.Your day-to-day responsibilities will include:· Designing, developing, and maintaining code that aligns with requirements set forth by the product team.· Writing integration tests for API endpoints.· Utilizing AWS cloud components to develop and enhance Java-based web applications.· Advising on solution architecture by evaluating the pros and cons of custom development versus other alternatives.Who you are:· Over 7 years of relevant experience in the software development and deployment lifecycle.· In-depth knowledge of core Java (versions 8 and above), Java Spring Boot, and Postgres DB.· Familiarity with event-driven systems (e.g., RabbitMQ); knowledge of Kafka is preferred.· Hands-on experience in writing unit tests and Spring integration tests.· Proficiency in REST API implementation and versioning.· Strong understanding of GitOps; knowledge of trunk-based development is a plus.· Proficient in using version control systems; experience with Bitbucket is preferred.· Collaborative experience in a multinational, distributed, and cross-functional team environment.· A team player who is receptive to giving and receiving feedback.· Ability to work independently on most tasks while knowing when to seek assistance.· Comfortable working in an agile environment, with practical experience in agile/scrum methodologies.· Experience with service-to-service API integrations.Great to have:

Join Assurity Trusted Solutions (ATS), a proud subsidiary of the Government Technology Agency (GovTech), as we continue to set benchmarks in the digital and cybersecurity landscape. Over the past decade, ATS has established itself as a trusted partner, delivering a vast array of products and services including operational, governance, and assurance solutions. Our commitment to fostering trust and collaboration enables us to effectively address cyber risks and enhance security measures through strategic alliances with GovTech, governmental bodies, and commercial partners.Key Responsibilities:Software Development & Architecture:Lead the comprehensive design and development of robust, scalable full-stack applications.Uphold coding standards, design principles, and industry best practices.Engage in the complete software development lifecycle, from initial design through to testing and deployment.Cross-functional Collaboration:Collaborate with project managers, UX/UI designers, and other stakeholders to accurately gather requirements and define project scopes.Work alongside development teams to integrate solutions and enhance system functionalities.Facilitate technical discussions, providing insights on best practices in Java and React development.Documentation & Quality Assurance:Maintain thorough documentation for software designs, APIs, and user manuals.Conduct code reviews to ensure adherence to quality assurance standards.Execute comprehensive testing of the application, including unit and integration tests.Mentorship:Guide and mentor junior developers, sharing your expertise and fostering a culture of continuous improvement.

Join xcellink as a Software Engineer, where you will play a crucial role in the design and development of innovative devices for an integrated e-payment Fare Collection System. Your expertise will guide you through the entire software development lifecycle, from requirement definition to design, development, and rigorous testing.Key responsibilities include:Designing and building advanced applications for the Ubuntu platform.Collaborating with cross-functional teams to define, design, and implement new features.Unit testing code to ensure robustness, covering edge cases, usability, and reliability.Addressing bugs and enhancing application performance.Preparing and submitting necessary documentation throughout the software development lifecycle, including Business Rules, Software Requirement Specifications, Software Architecture Documents, Design Specifications, Interface Specifications, Source Codes, Testing Specifications, and Operation and Maintenance Manuals.Liaising with stakeholders to address requirements, design, and testing issues.

Join Binance, a premier global blockchain ecosystem that powers the world’s largest cryptocurrency exchange by trading volume and user count. With a trusted network of over 300 million users across more than 100 countries, we are renowned for our exceptional security, transparency in user funds, rapid trading engine performance, and extensive liquidity. Our diverse offerings encompass trading, finance, education, research, payments, institutional services, Web3 functionalities, and beyond. By harnessing the potential of digital assets and blockchain technology, we strive to create an inclusive financial environment that enhances the freedom of money and broadens financial access for individuals worldwide.Become a part of the Exchange Service team at Binance, where we cater to over 250 million registered users globally. As passionate software engineers, we focus on developing and maintaining our core trading platform to ensure smooth and efficient operations. Our contributions reinforce Binance as the preferred platform for cryptocurrency enthusiasts around the globe.Our Margin Technology team is actively seeking a skilled Java Engineer to collaborate on innovative greenfield projects related to margin trading. Here, your expertise will drive forward-thinking solutions and create a meaningful impact in the crypto space.

Join our innovative engineering team at Nagarro as a Principal Engineer specializing in Java Fullstack development. In this pivotal role, you will lead the design and implementation of cutting-edge software solutions that enhance our client's digital experiences. Collaborate with cross-functional teams to develop scalable, efficient, and high-quality software applications.

Role overview fuku is hiring a Java Engineer in Singapore to help build and scale real-time communication platforms for the banking sector. This role focuses on designing, optimizing, and scaling enterprise-grade systems using Java, microservices, cloud, and Kafka. The work involves architecture and high-impact engineering, not just maintenance. What you will do Design and build microservices that handle millions of real-time interactions daily across enterprise communication platforms. Lead complex system design, translating business needs into scalable and resilient architectures for distributed environments. Modernize legacy systems, troubleshoot production issues, and improve performance in high-throughput settings. Promote Test-Driven Development, implement CI/CD pipelines, and encourage clean architecture and best practices. Work closely with stakeholders, architects, and product teams to deliver solutions that align with technical and business goals. Requirements Experience with Java, Spring Boot, and microservices in production environments that require scalable distributed systems. Deep understanding of Kafka, messaging systems, event-driven architecture, and real-time data streaming at enterprise scale. Strong computer science fundamentals: algorithms, data structures, and object-oriented design, with hands-on application. Practical expertise with Docker, Kubernetes, CI/CD pipelines, and deploying cloud-native applications in complex production settings. Ability to independently resolve complex technical challenges, optimize system performance, and manage high-pressure production incidents. Platform details Centralized messaging platform integrating SMS, Email, Push notifications, and real-time chat for banking clients. Tech stack includes Spring WebFlux, Kafka Streams, Apache Camel, Kubernetes, and reactive architectures. Contribute to re-architecting legacy systems, building event-driven solutions, and shaping the future of digital banking communication. Hiring process Initial screening includes a rigorous Codility test; only highly skilled engineers move forward. Seeking established experts with strong fundamentals and real-world system design experience. Why join fuku? Work on engineering challenges at scale, not just feature delivery. Collaborate with experienced engineers and use modern technologies that stretch your skills. Directly influence the technical direction of a global banking communication platform. How to apply To apply, contact Naveen at naveen.vasudevan@Tangspac.com.

Join our dynamic team at fuku as a Java Kafka Integration Engineer!Your Role Will Involve:- Designing, developing, and maintaining microservices and backend APIs utilizing Java and Spring Boot.- Crafting clean, modular, and testable code adhering to enterprise standards.- Building RESTful services and integrating with both internal and external systems.- Developing and sustaining event-driven components using Kafka.- Designing Kafka topics, partitions, and consumer groups to guarantee high throughput and fault tolerance.- Troubleshooting Kafka production issues and optimizing producer and consumer performance.- Collaborating with Oracle to design schemas, create stored procedures, and optimize complex SQL queries.- Ensuring data integrity, performance tuning, and efficient query execution.- Supporting migration and data integration tasks as needed.

Role Overview fuku is hiring a Senior Java Developer to join the engineering team in Singapore. This role focuses on designing, building, and maintaining backend systems that support the company’s growth. The position offers the chance to work on impactful products in a collaborative setting. What You Will Do Design, develop, test, and maintain Java-based applications and backend services Build scalable, reliable, and maintainable systems that match business needs Work closely with product managers, designers, and engineers to improve product features Write clean, efficient, and well-documented code following engineering best practices Troubleshoot production issues and optimize system performance Participate in code reviews and technical design discussions Develop and integrate RESTful APIs and third-party services Support CI/CD workflows, automated testing, and deployment activities Requirements About 5 years of experience in Java development Strong skills in core Java, object-oriented programming, and software design principles Familiarity with Spring Boot or similar Java frameworks Experience working with relational databases such as MySQL or PostgreSQL Knowledge of REST APIs, Git, and the software development lifecycle Effective problem-solving and communication skills Comfort working as part of a collaborative team Preferred Qualifications Experience with cloud platforms (AWS, GCP, or Azure) Familiarity with Docker, Kubernetes, or microservices architecture Understanding of caching, messaging systems, or distributed systems Background in a product or platform environment Compensation and Benefits Monthly salary: SGD 10,000 to 15,000 Opportunities to solve meaningful engineering challenges Collaborative, growth-focused team culture Career development within a growing company