Total 1,001 java developer job vacancies in Others category in Hong Kong

•Core Java 8+ and JUnit.

• Kafka, Oracle

• Spring Boot

• Maven

• Basic Linux shell scripting commands

• Java Messaging Concepts. (JMS, MQ),RTPM

• Relational Database concepts, SQL, joins, index, triggers etc.

• Web Services Rest, SOAP.

• Spring core concepts.

• Experience in SQL queries optimisation

• Familiarity with Intellij, Git, SonarQube/SonarLint

Secondary Skills (Good to Have)
•JBOSS (or any other application server knowledge).

• Java Server Faces, JPA, EJB knowledge.

• Able to write/understand complex SQL queries.

• Kafka

• React JS

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

•Core Java 8+ and JUnit.

• Kafka, Oracle

• Spring Boot

• Maven

• Basic Linux shell scripting commands

• Java Messaging Concepts. (JMS, MQ), RTPM

• Relational Database concepts, SQL, joins, index, triggers etc.

• Web Services Rest, SOAP.

• Spring core concepts.

• Experience in SQL queries optimisation

• Familiarity with Intellij, Git, SonarQube/SonarLint

Secondary Skills (Good to Have)
•JBOSS (or any other application server knowledge).

• Java Server Faces, JPA, EJB knowledge.

• Able to write/understand complex SQL queries.

• Kafka

• React JS

Responsibilities:

• Lead the design, development, and maintenance of scalable backend systems, microservices, and RESTful APIs.
• Collaborate with product managers and frontend teams to deliver fit-for-purpose digital solutions aligned with business and IT strategy.
• Ensure backend systems are secure, reliable, and optimised for performance.
• Drive technical discussions, make architectural decisions, and review code to ensure adherence to best practices and standards.
• Act as a mentor to junior developers, fostering a culture of continuous improvement and knowledge sharing.
• Manage system integrations across internal and third-party platforms
•  Contribute to DevOps processes and CI/CD pipelines to support rapid and safe software delivery.
• Document key design decisions, system workflows, and technical specifications.
• Support production systems, troubleshoot issues, and ensure uptime and resilience.

Requirements:    

•  Bachelor’s Degreein Computer Science, Engineering, or a related field.
•  4 years of hands-on backend development experience in enterprise or cloud-native applications.
•  Proficient in Java Spring Boot.
• Solid experience with microservices architecture, RESTful APIs, and message queues (e.g.Rabbit MQ).
• Expertise in database architecture and performance tuning across SQL, NoSQL, and Caching layers (e.g., PostgreSQL, MongoDB, Redis).
• Experience working with Angular in enterprise applications

Interested applicants, please Email , and look for

Jensen Fang Lifa

Recruit Express Pte Ltd

EA License No. 99C4599

EA Personnel Registration Number: R2197080

We regret that only shortlisted candidates will be contacted.

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

Job Summary

We are seeking a skilled and motivated Full Stack Web Developer to design, develop, and maintain scalable web applications. You will work across both front-end and back-end technologies, collaborating with cross-functional teams to deliver high-quality digital solutions.

Responsibilities

• Develop and maintain scalable web applications using modern front-end and back-end technologies to meet business needs
• Design responsive, user-friendly interfaces ensuring cross-browser compatibility for optimal user experience
• Build and integrate RESTful APIs and third-party services to extend application functionality
• Optimize application performance, scalability, and security to enhance system reliability and user trust
• Troubleshoot, debug, and upgrade existing systems to maintain operational efficiency
• Collaborate with designers, product managers, and developers to define and implement new features that align with product goals
• Write clean, maintainable, and well-documented code to support future development and team collaboration
• Participate in code reviews and contribute to establishing and maintaining best coding practices

Required competencies and certifications

• Proven experience as a Full Stack Developer or in a similar role
• Proficiency in front-end technologies such as HTML, CSS, JavaScript, React, Angular, or Vue.js
• Experience with back-end technologies including Node.js, Python, Java, or PHP
• Familiarity with databases like MySQL, PostgreSQL, or MongoDB
• Knowledge of version control systems such as Git
• Understanding of web security practices and performance optimization

Preferred competencies and qualifications

• Experience with cloud platforms such as AWS, Azure, or Google Cloud
• Familiarity with DevOps practices and CI/CD pipelines
• Experience with containerization tools like Docker
• Knowledge of Agile/Scrum methodologies

Our esteemed client in the IT industry is seeking a Senior Frontend Engineer to join their dynamic team:

• Employment Type: 1-year renewable contract
• Position: Senior Frontend Engineer  
• Location: Novena
• Working Hours: Monday to Friday, 8.30am to 6pm (Hybrid Working Arrangements)
• Salary Package: Up to $7,200 + Bonus + Medical Benefits

Job Responsibilities:

• Design, develop, and maintain responsive web applications with a focus on geospatial solutions and modern web technologies.
• Develop and maintain frontend components for web applications using modern JavaScript frameworks (Next.js, Leaflet.js, etc)
• Implement responsive and cross-browser compatible user interfaces
• Integrate frontend applications (AWS services, external systems) with RESTful APIs and backend services
• Collaborate with development teams using Agile methodologies
• Optimize applications for scalability, observability, and cost-efficiency in an AWS cloud-native environment.
• Apply security best practices and ensure compliance with AWS security standards
• Ensure code quality through testing and code reviews

Job Requirements:

• Degree in Computer Science, Software Engineering, IT, or related disciplines.
• Highly proficient in jQuery, HTML5, CSS3, WebGL, and Node.js.
• Strong experience with the React.js framework.
• Proven experience integrating RESTful APIs.
• Solid expertise in cross-browser development and compatibility.
• Experience with open-source geospatial libraries/solutions (e.g., Leaflet.js, Mapbox JS, Cesium) is an advantage.
• Experience working with databases such as PostgreSQL/PostGIS or MongoDB is preferred.
• Familiarity with cloud platforms and containerization tools (e.g., Docker) is preferred.
• Experience with AWS services is a plus.
• Understanding of modern development workflows and tools (e.g., Git, CI/CD practices).

Ready to apply? Here’s how: 

• Click the APPLY button, or 
• Email your resume (in MS Word or PDF format) to adelin@intuitrecruitment.com. Include the job title in your email subject line for prompt processing. 

Only shortlisted candidates will be notified. 

By submitting your application, you consent to the collection and use of your personal data under Personal Data Protection Act (PDPA). 

Adelin Chong | EA Personnel Reg No.: R1875641 

Intuit Recruitment Pte Ltd | EA License No.: 25C2793 

Our esteemed client in the IT industry is seeking a Technical Architect (OutSystems /Low-Code Platform) to join their dynamic team:

• Employment Type: 1-year renewable contract
• Position: Technical Lead (OutSystems / Low-Code Platform)
• Location: Pasir Panjang
• Working Hours: Monday to Friday, 8.30am to 6pm (Hybrid Working Arrangements)
• Salary Package: Up to $9,700 + Bonus + Medical Benefits

Job Responsibilities:

• Lead technical design, system architecture, and integration strategy across platforms
• Ensure application scalability, performance, security, and code quality standards
• Provide technical leadership, mentorship, and governance to the development team
• Define and implement best practices for software development, testing, and deployment
• Collaborate with business stakeholders, designers, and engineers to translate requirements into scalable technical solutions
• Drive architecture decisions across full-stack applications, including frontend, backend, and data layers
• Oversee system integrations and API design within a microservices-based architecture
• Support adoption and integration of low-code/no-code platforms (e.g. OutSystems) within enterprise environments

Job Requirements:

• At least 7 years of full-stack development experience, with strong hands-on experience in OutSystems development and architecture
• Familiar with Agile methodologies and system integration
• Proven experience designing scalable systems and leading technical design
• Experience leading or mentoring developers
• OutSystems certifications would be an advantage.
• Experience with microservices, API design, and DevOps practices
• Exposure to low-code/no-code platforms and modern frontend frameworks
• Interest or experience in AI/ML or emerging technologies

Ready to apply? Here’s how: 

• Click the APPLY button, or 
• Email your resume (in MS Word or PDF format) to adelin@intuitrecruitment.com. Include the job title in your email subject line for prompt processing. 

Only shortlisted candidates will be notified. 

By submitting your application, you consent to the collection and use of your personal data under Personal Data Protection Act (PDPA). 

Adelin Chong | EA Personnel Reg No.: R1875641 

Intuit Recruitment Pte Ltd | EA License No.: 25C2793 

Responsibilities

·       Implementing Python based full stack application instances; analyse the impact on current/new system, research problems and design and implement optimal solutions.

• Follow all the Change Management and Engineering Review processes. Ensure changes are completed according to the project and/or release schedule.
• Ensure that the systems built conform to the requirements, principles and models that support the solution architecture overall roadmap.
• Communicate effectively with external and internal teams on technical delivery and system maintenance.

·       Enforce technical quality in all aspects of project delivery, with Waterfall/Agile best practices and methods such as Scrum, CI/CD DevOps Practices, Test Driven Development, while adhering to SDM guidelines.

Skills/Requirement

• At least 10+ years of experience in technical hands-on experience on development and implementation 
• A bachelor’s in computer science, Computer Engineering, Information Systems, or any related field with strong education in web technologies.
• Technical lead in Python based full stack applications.
• Experience in supporting implementing large-scale, highly available applications or large project implementation.
• Strong experience with Python/Django based backend and high-end frontend frameworks.
• Experience with Waterfall/Agile best practices and methods such as Scrum, Continuous Integration, Test Driven Development 
• Good interpersonal and communication skills, both verbal and written.
• Solid experience in solutioning and system design
• Experience in designing and implementing integration with MQ, microservices and high-volume batch processing.
• Strong experience in unit testing concepts and implementation for python & JavaScript components 
• Solid experience in object-oriented design techniques, UML, and object modelling
• Experience with a variety of source control and development

Interested candidates, who wish to apply for the above position, please send in your resume to: kellyitsg@persolapac.com

PERSOL Singapore Pte Ltd EA License No. 01C4394 EA Reg No: R23118975 (ABDUL RAHMAN ANSARI RAJA)

We regret to inform you that only shortlisted candidates will be contacted.

**********************************

This is in partnership with Employment and Employability Institute Pte Ltd (“e2i”). e2i is the empowering network for workers and employers seeking employment and employability solutions. e2i serves as a bridge between workers and employers, connecting with workers to offer job security through job-matching, career guidance and skills upgrading services, and partnering employers to address their manpower needs through recruitment, training, and job redesign solutions. e2i is a tripartite initiative of the National Trades Union Congress set up to support nation-wide manpower and skills upgrading initiatives. By applying for this role, you consent to e2i’s PDPA.

By sending us your personal data and curriculum vitae (CV), you are deemed to consent to PERSOL Singapore Pte Ltd and its affiliates to collect, use and disclose your personal data for the purposes set out in the Privacy Policy available at https://www.persolapac.com.sg/policies. You acknowledge that you have read, understood, and agree with the Privacy Policy.

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- Possess a degree in Computer Science, Information Technology, or related field.
- 3 to 7 years of hands-on software development experience in Java and/or Kotlin.
- Good written and verbal communication skills.
- Agile, fast learner and able to adapt to changes.

** not for android application

- Experience in TypeScript, React, C#, MSSQL

Main Responsibilities 

• Participate in design, implementation, and validation of mobile SDK and application in accordance with institutionalized processes and delivery standards. 
• Participate in the design and development of mobile SDKs. 
• Contribute to the improvement of existing technology platform/baseline and development methodology through prototyping and patent proposal. 
• Troubleshoot and SL3 support for our customer. 

Qualifications & Experience 

• Bachelor’s in Information Technology or relevant fields. 
• Minimum 3 to 5 years of experience developing Android apps using Kotlin is mandatory. 
• Strong knowledge of mobile development in Android, especially on relevant core platform technologies. 
• Proficient in Java, Kotlin technologies. 
• Experience with continuous integration and build automation Jenkins and Gradle. 
• Strong interest in mobile applications ecosystem. 
• Knowledge of OO design and programming skills. 
• Knowledge of unit testing and test automation. 
• Proficient in native development (Plus). 
• Knowledge on iOS (Plus). 
• Motivated self-starter, strong logical, creative problem-solving skills and excellent analytical skills. 
• Experience with Android Background Service and Location APIs (Preferred). 
• Experience with ESRI ArcGIS SDK (Preferred). 

What You Will Do

• Design, develop, and maintain software components across backend services and system-level modules
• Apply sound software architecture and system design principles to real-world problems
• Implement efficient algorithms and data structures with attention to performance and reliability
• Collaborate with product, robotics, and platform teams to translate requirements into technical solutions
• Debug, test, and improve existing systems to ensure robustness and scalability
• Contribute to technical discussions, design reviews, and code reviews

Requirements

• Bachelor’s or Master’s degree in Computer Science, Engineering or a related field
• Strong fundamentals in computer science, including algorithms, data structures, and system design
• Strong proficiency in C# and Python is preferred; working knowledge of C++ or Java is a plus
• Exposure to backend development; full-stack experience is a plus
• Ability to reason about software architecture, modularity, and maintainability
• A portfolio demonstrating your work (e.g. GitHub, personal website, or relevant projects)

Good to Have

• Experience with web frameworks, APIs, or distributed systems
• Familiarity with databases, cloud services, or containerized environments
• Prior exposure to robotics, automation, or industrial software systems
• Experience with AI-assisted development tools (e.g. Claude workflows, AI code assistants) to enhance developer productivity is advantageous.

Mandatory Skills

Required Backend Technical Skills

  - Strong proficiency in Java (Java 17+) with deep understanding of core concepts
  - Expert-level Spring Boot framework knowledge (Spring MVC, Spring Data, Spring Security, Spring Cloud)
  - Solid understanding of microservices architecture patterns and best practices
  - Experience with relational databases (Maria DB) and SQL optimization
  - Strong knowledge of RESTful API design principles
  - Experience with message queues (Kafka, IBM MQ, etc.)
  - Unit testing and integration testing (JUnit, Mockito, Karate)
  - Strong understanding of design patterns and SOLID principles

  Required Frontend Technical Skills

  - Expert-level Typescript React 18+ experience with deep understanding of hooks, context, and component lifecycle
  - Strong Redux and Redux Toolkit (RTK) proficiency for state management
  - RTK Query for efficient data fetching and caching
  - Micro Frontend (MFE) architecture design and implementation (Module Federation, Single-SPA, or similar)
  - Advanced HTML5 and semantic markup
  - Expert-level CSS3, including Flexbox, Grid, and responsive design
  - CSS-in-JS solutions (Styled Components, Emotion)
  - Modern JavaScript/TypeScript (ES6+)
  - Frontend build tools (Webpack, Vite, or similar)
  - Frontend testing frameworks (Jest, React Testing Library, Cypress, Playwright)
  - Performance optimization techniques (code splitting, lazy loading, memoization)

  Additional Technical Experience (Preferred)

  - TypeScript for type safety
  - Cloud platforms (PCF, AWS, OCP)
  - Containerization (Docker) and orchestration (Kubernetes)
  - CI/CD pipelines (Jenkins, GitLab CI, GitHub Actions)
  - Event-driven architecture
  - Design systems and component libraries (Storybook)
  - Monitoring and observability tools (Prometheus, Grafana, ELK stack, Sentry)
  - Performance profiling and optimization (Lighthouse, Web Vitals)

  Architecture & Design Skills

  - Microservices and Micro Frontend architecture patterns
  - API design and integration patterns
  - Distributed systems and caching strategies
  - Security best practices (OAuth, JWT, CORS, XSS, CSRF prevention)
  - Scalability and performance optimization
  - Domain-driven design (DDD)

  Soft Skills

  - Strong problem-solving and analytical thinking abilities across frontend and backend
  - Excellent communication skills for technical discussions and documentation
  - Ability to mentor and guide team members on both frontend and backend technologies
  - Self-motivated with ability to work independently and in teams
  - Strong ownership and accountability mindset
  - Comfortable context-switching between frontend and backend work
  - Ability to make pragmatic technical trade-offs

Preferred Skills

Nice to Have

  - Experience with agile/scrum methodologies
  - Contributions to open-source projects
  - Understanding of DevOps practices

Brief Job Description

Position Overview                                                                                                   
                                                                                                                       
  We are seeking highly skilled Senior Full Stack Developers with deep expertise in both Java Spring Boot backend and modern React frontend technologies. The ideal candidate will have strong technical fundamentals across the entire stack, proven ability to design scalable systems, and experience leading development efforts.             
 
  Key Responsibilities

  - Design, develop, and maintain full-stack applications using Java Spring Boot and React
  - Build and optimize RESTful APIs, microservices.
  - Implement and maintain Micro Frontend (MFE) architectures
  - Mentor junior and mid-level developers, conduct comprehensive code reviews
  - Drive best practices across the entire technology stack
  - Collaborate with cross-functional teams including DevOps, UX/UI designers, and product managers
  - Troubleshoot complex production issues spanning frontend and backend
  - Drive technical innovation and continuous improvement initiatives
  - Participate in system design discussions and contribute to technical roadmap

We are a fast-growing tech team building scalablemodern web applications and are looking for a Frontend Developer tojoin us. You will play a key role in delivering high-quality, performant, anduser-friendly interfaces in a collaborative product-driven environment.

This role is ideal for developers who enjoy working in afast-paced setting, writing clean and maintainable code, and growing alongsidean engineering team building real-world products.

Responsibilities

• Develop and maintain web applications using React.js and TypeScript
• Build reusable, scalable, and maintainable UI components
• Work with state management libraries such as Redux and/or Zustand
• Integrate REST APIs and handle asynchronous data flows
• Collaborate with backend engineers, designers, and product teams
• Participate in Agile/Scrum workflows
• Maintain clean project structure and frontend architecture best practices
• Debug, optimize performance, and improve user experience across devices

Requirements

• 1+ years of experience in frontend development
• Strong proficiency in React.js and TypeScript
• Solid understanding of JavaScript (ES6+), HTML5, CSS3
• Experience with state management (Redux, Zustand, or similar)
• Good understanding of React Hooks and functional components
• Experience consuming and integrating REST APIs
• Familiarity with scalable frontend architecture and folder structure
• Comfortable working in an Agile/Scrum environment

Additional Skills:

• Experience with UI frameworks (Tailwind CSS, MUI, Ant Design, etc.)
• Basic knowledge of testing (Jest / React Testing Library)
• Familiarity with CI/CD pipelines
• Performance optimization experience
• Good Git workflow practices (branching, PRs, code reviews)

Others:

• Working Hours: 5 Days Work Week / 8.30am to 5.30pm
• Location: West (Bukit Batok)

Why Join Us

• Fast-growing engineering environment with real product impact
• Opportunity to work on modern frontend systems and architecture
• Strong learning culture with mentorship and growth opportunities
• Exposure to full product lifecycle in a collaborative team

- Possess a degree in Computer Science, Information Technology, or related field.
- 3 to 7 years of hands-on software development experience in Python.
- Good written and verbal communication skills.
- Agile, fast learner and able to adapt to changes.

** not for android application

- Experience in TypeScript, React, C#, MSSQL