Total 10 java developer job vacancies in Engineering category

Responsibilities:

• Design, develop, and maintain backend services and APIs for global products using Java.
• Build a high-performance, highly available, and secure backend system to provide robust support for BigPay Fiat business operations.
• Engage in and improve the whole lifecycle of service, from inception and design, through to deployment, operation, and refinement.
• Develop and maintain tools, re-designing capacity planning infrastructure for greater scalability.
• Troubleshooting, diagnosing, fixing software issues, and ensuring data security, and end-to-end system architecture.

Responsibilities:

• Minimum of 7 years of experience in software development and architecture.
• Strong expertise in Java and backend frameworks (e.g., Spring Boot, RESTful APIs)
• Experience with databases (SQL and/or NoSQL), messaging systems (e.g., Kafka, RabbitMQ), and microservices architecture
• In-depth understanding of Linux and computer networks.
• Experience in profiling, benchmarking and optimizing ML applications
• Middleware:
• Java code development experience, preferably Apache open source project developers
• Experience in high availability, high performance, and resource optimization.

Job Responsibilities

- Responsible for the design, development, testing, and maintenance of enterprise-level backend systems, reporting modules, and data platforms

- Perform system analysis, technical design, and feature implementation based on business requirements

- Responsible for Java backend service development and database business logic implementation

- Responsible for Oracle / OceanBase database development and optimization, including:

• Stored Procedures
• Packages
• Triggers
• Functions

- Optimize SQL queries and database performance to improve overall system stability and response efficiency

- Participate in RESTful API development and third-party system integration

- Use MongoDB, ClickHouse, and related technologies to support big data queries and analysis

- Responsible for system troubleshooting, performance tuning, and production environment support

- Configure, build, and test system-related technical components

- Collaborate with product, frontend, and other technical teams to ensure smooth project delivery

- Participate in relevant technical research and system optimization work according to project needs

Job Requirements

Technical Skills

- Proficient in Java SE / Java EE and object-oriented programming (OOP)

- Familiar with enterprise-level development using Spring Boot / Spring Framework

- Familiar with MVC architecture design

- Experience with MyBatis / iBatis development

- Solid experience in SQL performance optimization

- Proficient in Oracle database optimization and stored procedure development

- Experience in multithreaded development and system performance tuning

- Familiar with RESTful API design and system integration patterns

- Familiar with version control tools such as SVN / Git

- Experience with MongoDB, ClickHouse, or big data platforms is preferred

- Familiarity with Linux environment operations and deployment is preferred

- Familiarity with AI-assisted development tools such as Cursor, Claude Code, GitHub Copilot, etc. is preferred

- Experience developing systems for finance, government, or large enterprises

- Experience with microservices architecture development

- Experience with Docker, CI/CD, or cloud deployment

- Experience with high-performance data processing or real-time data analysis

- Experience in system architecture design is preferred

- Experience leading development teams or projects is a plus

Personal Attributes

- Good analytical and problem-solving skills

- Careful and detail-oriented, with a strong focus on code quality and system stability

- Able to handle high-concurrency and large-scale data scenarios

- Good teamwork and communication skills

- Proactive, responsible, and highly accountable

Qualifications

- Bachelor’s degree or above in Computer Science, Software Engineering, Information Technology, or a related field

- At least 4–5 years of Java backend development experience

- Experience developing large-scale enterprise systems or high-concurrency systems is preferred

Language Requirements

- Good English communication skills

- Fluency in spoken and written Chinese is essential, as the role requires frequent liaison with Chinese-speaking counterparts and stakeholders, and the preparation, review and handling of Chinese-language work materials.


岗位职责

- 负责企业级后台系统、报表模块及数据平台的设计、开发、测试与维护

- 根据业务需求进行系统分析、技术设计及功能实现

- 负责 Java 后端服务开发及数据库业务逻辑实现

- 负责 Oracle / OceanBase 数据库开发与优化，包括:

• Stored Procedure
• Package
• Trigger
• Function

- 优化 SQL 查询及数据库性能，提升系统整体稳定性与响应效率

- 参与 RESTful API 开发及第三方系统整合

- 使用 MongoDB、ClickHouse 及相关技术支持大数据查询与分析

- 负责系统问题排查、性能调优及生产环境支持

- 配置、构建及测试系统相关技术组件

- 与产品、前端及其他技术团队协作，确保项目顺利交付

- 根据项目需求参与相关技术研究与系统优化工作

职位要求:

技术能力

- 精通 Java SE / Java EE 及面向对象编程（OOP）

- 熟悉 Spring Boot / Spring Framework 企业级开发

- 熟悉 MVC 架构设计

- 具备 MyBatis / iBatis 开发经验

- 扎实的 SQL 性能优化经验

- 精通 Oracle 数据库优化及存储过程开发

- 具备多线程开发及系统性能调优经验

- 熟悉 RESTful API 设计与系统整合模式

- 熟悉 SVN / Git 等版本控制工具

- 有 MongoDB、ClickHouse 或大数据平台经验者优先

- 熟悉 Linux 环境操作及部署者优先

- 熟悉 AI 辅助开发工具（如 Cursor、Claude Code、GitHub Copilot 等）者优先

加分项

- 有金融、政府或大型企业系统开发经验

- 有微服务架构（Microservices）开发经验

- 有 Docker、CI/CD 或云端部署经验

- 有高性能数据处理或实时数据分析经验

- 有系统架构设计经验者优先

- 有带领开发团队或项目经验者更佳

个人能力

- 具备良好的分析与问题解决能力

- 工作认真细致，注重代码质量与系统稳定性

- 能够处理高并发及大规模数据场景

- 具备良好的团队合作与沟通能力

- 工作积极主动，责任感强

任职资格

- 计算机科学、软件工程、信息技术或相关专业本科及以上学历

- 至少 4–5 年 Java 后端开发经验

- 具备大型企业系统或高并发系统开发经验者优先

语言要求

- 具备良好的英语沟通能力

- 能使用普通话沟通者优先，以便与华语客户及合作伙伴进行日常交流


Lumina Advisory & Global Search Pte Ltd | 25C3262

Joyce Yeo | R1218489

Key Responsibilities

[Backend & Platform Development]

• Design, develop, and maintain backend services and microservices architecture

• Support integration between systems, databases, and messaging platforms

• Improve system performance, scalability, stability, and operational efficiency

• Participate in troubleshooting, optimization, and production support

• Work with APIs, asynchronous messaging systems, and multi-database environments

[AI & Automation Support]

• Support AI-assisted engineering and automation initiatives

• Participate in workflow automation, testing automation, and engineering productivity improvements

• Explore AI development tools and automation platforms to improve development efficiency

• Support engineering best practices for AI-assisted development workflows

[Engineering Collaboration]

• Work closely with product, engineering, and infrastructure teams

• Participate in code reviews, testing, CI/CD, and system improvement initiatives

• Support technical delivery, implementation, and rollout activities

Requirements

[Technical Skills]

• Minimum 3 years of hands-on Java backend development experience

• Familiar with microservices architecture and distributed systems

• Experience or exposure to Redis, Kafka, MySQL / Oracle, and ClickHouse

• Familiar with API integration and backend system development

• Basic understanding of system performance optimization and troubleshooting

• Experience with CI/CD or code review practices is an advantage

[AI & Automation Interest]

• Interest in AI-assisted development, automation workflows, or engineering productivity tools

• Willingness to learn AI engineering and automation technologies

• Exposure to AI coding tools or automation platforms is a plus

[Soft Skills]

• Good teamwork skills

• Strong problem-solving mindset

• Willingness to learn and adapt in a fast-paced technology environment

• Fluency in spoken and written Chinese is essential, as the role requires frequent liaison with Chinese-speaking counterparts and stakeholders, and the preparation, review and handling of Chinese-language work materials

Preferred Qualifications

• Bachelor’s Degree in Computer Science, Software Engineering, Information Technology, or related field

• Equivalent practical experience will also be considered

主要職責

後端平台與系統開發

- 負責後端服務及微服務架構的設計、開發與維護

- 參與系統、資料庫及訊息平台之間的整合工作

- 優化系統效能、擴展性、穩定性及整體運維效率

- 協助處理系統問題排查、效能調校及生產環境支援

- 參與 API、非同步訊息處理及多資料庫環境相關開發工作

AI 與自動化工程支援

- 支援 AI 輔助開發及工程自動化相關項目

- 參與工作流程自動化、測試自動化及開發效率提升工作

- 探索並應用 AI 開發工具及自動化平台，以提升團隊研發效率

- 協助建立與 AI 輔助開發相關的工程規範及最佳實踐

團隊協作與技術交付

- 與產品、工程及基礎設施團隊緊密合作，推動項目落地

- 參與 Code Review、測試、CI/CD 流程及系統優化工作

- 支援系統實施、上線部署及相關技術交付工作

職位要求

技術能力

- 至少 3 年 Java 後端開發經驗

- 熟悉微服務架構及分散式系統設計概念

- 具備或接觸過 Redis、Kafka、MySQL / Oracle、ClickHouse 等技術

- 熟悉 API 整合及後端系統開發流程

- 具備基本系統效能優化、問題分析及故障排查能力

- 具備 CI/CD 或 Code Review 經驗者尤佳

AI 與自動化相關興趣

- 對 AI 輔助開發、自動化流程或工程效率工具具備興趣

- 願意學習 AI 工程及自動化相關技術

- 曾接觸 AI Coding Tool 或自動化平台者尤佳

個人特質

- 具備良好的團隊合作精神

- 具備良好的問題分析與解決能力

- 能夠適應快速發展的科技環境，並持續學習與成長

- 須具備流利的中文聽說讀寫能力，因本職位需經常與中文溝通之合作方及持份者聯繫，並需撰寫、審閱及處理中文工作文件

優先條件

- 具備計算機科學、軟體工程、資訊科技或相關專業本科或以上學歷

- 具備同等實務經驗者亦可考慮

Lumina Advisory & Global Search Pte Ltd | 25C3262

Joyce Yeo | R1218489

Key Responsibilities

• Design and develop scalable applications using Java, Spring Boot, and microservices architecture
• Create high-level and low-level technical designs based on business requirements
• Perform impact analysis for new features and system changes
• Lead requirements gathering and translate them into technical solutions
• Provide technical leadership and guidance to team members
• Conduct code reviews and resolve production issues
• Collaborate with stakeholders to define and refine system solutions
• Contribute to system integration and performance optimization
• Support deployment, troubleshooting, and continuous improvement of applications

Requirements

• Bachelor’s degree in Computer Science, IT, or related field
• 5+ years of experience in backend application development
• Strong proficiency in:

• Java, Spring Boot, Spring MVC, Hibernate, JPA Microservices and event-driven architecture

• Experience with database technologies: Oracle, MSSQL, or MongoDB
• Hands-on experience with cloud platforms (AWS or Azure)
• Strong knowledge of system design (HLD/LLD) and architecture principles
• Experience in technical leadership / mentoring
• Familiarity with Docker, Kubernetes, Kafka
• Strong problem-solving and communication skills

• Frontend exposure (Angular, JavaScript, HTML, CSS)
• Experience in CI/CD tools and DevOps practices
• Knowledge of version control (Git, SVN)
• Experience in large-scale enterprise or government systems
• Familiarity with Linux environments

• Experience in insurance, tax, or public sector systems
• Exposure to domain-driven design (DDD)
• Experience working in Agile environments

Interested candidate please click "APPLY" to begin your job search journey.

By sending us your personal data and curriculum vitae (CV), you are deemed to consent to PERSOL Tech Services 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.persoloutsourcing.com/policies. You acknowledge that you have read, understood, and agree with the Privacy Policy.

PERSOL Tech Services Pte Ltd

UEN No. 202233837K

Key Responsibilities

• Develop and maintain scalable web applications and backend services using Java and JavaScript-based technologies.
• Build RESTful APIs and microservices using Spring Boot and Node.js.
• Design responsive user interfaces using React.js and TypeScript.
• Work with SQL and NoSQL databases such as PostgreSQL, MongoDB, and ElasticSearch.
• Collaborate in an Agile development environment with cross-functional teams including DevOps, QA, and Product.
• Implement CI/CD pipelines and participate in DevOps practices using Docker and related tools.
• Ensure software quality through unit testing, code reviews, and automated testing.
• Troubleshoot issues and optimize application performance.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Strong proficiency in Java and JavaScript, with experience in Spring Boot, Node.js, and React.js.
• Proficient in TypeScript, MongoDB, and SQL/NoSQL databases.
• Familiarity with Docker, ElasticSearch, and DevOps concepts.
• Experience working in an Agile/Scrum environment.
• Good understanding of system design, APIs, and microservices architecture.
• Strong analytical and problem-solving skills.

Preferred Qualifications

• Experience with cloud platforms (e.g., AWS, Azure, GCP).
• Familiarity with CI/CD tools and infrastructure as code.
• Knowledge of security best practices and performance tuning.

Location: Central

(EA Reg No: 20C0312)

Please email a copy of your detailed resume to kayla@talentsis.com.sg for immediate processing.

Only shortlisted candidates will be notified.

Key Responsibilities

• Develop and maintain scalable web applications and backend services using Java and JavaScript-based technologies.
• Build RESTful APIs and microservices using Spring Boot and Node.js.
• Design responsive user interfaces using React.js and TypeScript.
• Work with SQL and NoSQL databases such as PostgreSQL, MongoDB, and ElasticSearch.
• Collaborate in an Agile development environment with cross-functional teams including DevOps, QA, and Product.
• Implement CI/CD pipelines and participate in DevOps practices using Docker and related tools.
• Ensure software quality through unit testing, code reviews, and automated testing.
• Troubleshoot issues and optimize application performance.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Strong proficiency in Java and JavaScript, with experience in Spring Boot, Node.js, and React.js.
• Proficient in TypeScript, MongoDB, and SQL/NoSQL databases.
• Familiarity with Docker, ElasticSearch, and DevOps concepts.
• Experience working in an Agile/Scrum environment.
• Good understanding of system design, APIs, and microservices architecture.
• Strong analytical and problem-solving skills.

Preferred Qualifications

• Experience with cloud platforms (e.g., AWS, Azure, GCP).
• Familiarity with CI/CD tools and infrastructure as code.
• Knowledge of security best practices and performance tuning.

Location: Central

(EA Reg No: 20C0312)

Please email a copy of your detailed resume to qianyu@talentsis.com.sg for immediate processing.

Only shortlisted candidates will be notified.

Role:

• Communicate highly technical issues to non-technical audience.
• Earn good reputation of being technically strong in the organization by help solving problems others struggle
• Development and delivery with Java, EJB, Spring Boot, MySQL, Oracle and IBM MQ.
• Understand business / system requirements and translate them into technical solutions that are scalable, stable and fit for purpose.
• Ensure adherence to the bank standards (including code, security and performance).
• The role provides exposures to Wealth Management systems.
• Passionate about technologies and building robust and scalable Java Systems.
• Analysis, design coding, and implementation of complex and custom-built applications.
• Work collaboratively with team to achieve goals.
• Experience working in Agile methodologies, such as Scrum, and/or Extreme programming.
• Experience in following in following best practices like Test-Driven Development (TDD) and continuous Integration (CI)
• Investigate and resolve production issues to help maintain a stable production environment; remain cool and effective in crisis.
• Analyse requirements, estimate efforts, plan timeline, manage progress.
• Ensure awareness, involvement and support from the key stakeholders and participants by building strong project teams and maintaining robust communication on the project status throughout its life cycle
• Drive and review technical and architectural design, enforce architectural guidelines and challenge status quo.

Requirements

• Minimum of 8 years of Software development experience
• Minimum of Bachelors degree in Computer Science or similar relevant education background.
• Strong banking or financial services industry experience is mandatory
  Skills requirements
• Core Java 8+ and JUnit.
• Spring Boot
• Strong computer science knowledge (algorithms, data structures, object-oriented design)
• TDD. Able to write acceptance test.
• Maven & Basic Linux shell scripting commands
• Java Messaging Concepts. (JMS, MQ)
• 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
• JBOSS (or any other application server knowledge).
• Java Server Faces, JPA, EJB knowledge.
• Kafka
• React JS

Key Responsibilities

• Develop and maintain scalable web applications and backend services using Java and JavaScript-based technologies.
• Build RESTful APIs and microservices using Spring Boot and Node.js.
• Design responsive user interfaces using React.js and TypeScript.
• Work with SQL and NoSQL databases such as PostgreSQL, MongoDB, and ElasticSearch.
• Collaborate in an Agile development environment with cross-functional teams including DevOps, QA, and Product.
• Implement CI/CD pipelines and participate in DevOps practices using Docker and related tools.
• Ensure software quality through unit testing, code reviews, and automated testing.
• Troubleshoot issues and optimize application performance.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Strong proficiency in Java and JavaScript, with experience in Spring Boot, Node.js, and React.js.
• Proficient in TypeScript, MongoDB, and SQL/NoSQL databases.
• Familiarity with Docker, ElasticSearch, and DevOps concepts.
• Experience working in an Agile/Scrum environment.
• Good understanding of system design, APIs, and microservices architecture.
• Strong analytical and problem-solving skills.

Preferred Qualifications

• Experience with cloud platforms (e.g., AWS, Azure, GCP).
• Familiarity with CI/CD tools and infrastructure as code.
• Knowledge of security best practices and performance tuning.

Location: Central

(EA Reg No: 20C0312)

Please email a copy of your detailed resume to kayla@talentsis.com.sg for immediate processing.

Only shortlisted candidates will be notified.

SENIOR BACKEND ENGINEER

Responsibility

The Backend Engineer is responsible for designing, developing, and maintaining scalable and secure backend services that power digital products. The role requires expertise in software engineering principles, modern development practices, and cloud-native architecture. Engineers must work in an agile, DevOps-driven environment, ensuring high software quality, reliability, and security.

a)    Collaborate with Business Analysts(BA) and Product Managers to refine user stories and translate them into technical requirements.

b)    Work with Quality Assurance (QA)engineers to ensure automated test coverage and proactively fix bugs and defects.

c)     Partner with DevOps teams to automate build, deployment, and monitoring pipelines.

d)    Develop and maintain scalable, high-performance APIs and backend services in a cloud-native environment.

e)    Implement modern software development practices, including TDD, pair programming, and CI/CD.

f)      Conduct code reviews, enforce security best practices, and ensure software craftsmanship standards.

g)    Design     and     document     system     architecture,         ensuring compliance with government security and regulatory standards.

h)    Excellent written and verbal communication skills to pitch ideas and influence stakeholders.

i)       End to end experience working with product team to build products.

j)       Ability to work effectively and independently under pressure and prioritize effectively to meet tight deadlines.

k)      Computer science, product management related degrees or diplomas are a plus.

l)       Optimize and improve backend systems for scalability, observability, and reliability.

m)   Where applicable, contribute to blockchain and smart contract development.

Experience and Skills Needed

Technical Skills:

a)     Degree or Diploma in Computer Science, Computer or Electronics Engineering, Information Technology, or related disciplines.

b)    Experience with Git and modern branching workflows (GitFlow, trunk-based development).

c)     Proficiency in modern backend programming languages such as: Shell Scripting, Java, Python, Golang, Node.js.

d)    Experience with cloud platforms (AWS, Azure, Google Cloud).

e)       Familiarity with microservices architecture and event-driven patterns is a plus(Kafka, RabbitMQ).

f)      Hands-on experience with containerization and orchestration tools (Docker, Kubernetes).

g)      Experience with CI/CD pipelines(ex. GitHub Actions, GitLab CI,).

h)       Knowledge of database technologies (ex. PostgreSQL, MySQL, MongoDB, DynamoDB, Redis).

i)       Experience with observability tools (Prometheus, OpenTelemetry, Grafana, ELK stack).

j)      Experience with Infrastructure as Code (IaC) tools (Terraform, CloudFormation).

k)       Experience with API documentation tools such as Swagger.

Software Engineering Practices:

a)     Experience working in Agile Software Delivery Life cycle and Practices(ex: Scrum, Kanban) with strong collaboration skills.

b)    Knowledge of Extreme Programming (XP) practices such as TDD, pair programming, continuous refactoring.

c)      Strong understanding of test automation frameworks (example: JUnit, PyTest ).

d)    Adherence to software craftsmanship principles, ensuring clean, maintainable, and efficient code.

Bonus Experience (Added Advantage):

a)     Experience working with government digital services and authentication mechanisms (SingPass, CorpPass).

b)     Experience with API gateways and service meshes(Kong, Istio, Apigee).

c)     Experience with serverless computing (AWS Lambda, Azure Functions).

Key Responsibilities

• Provide L2/L3 application and production support for business-critical applications.
• Monitor application performance and system health using industry-standard monitoring tools.
• Investigate, troubleshoot, and resolve production incidents within agreed service levels.
• Perform root cause analysis and implement preventive measures to minimize recurring issues.
• Work closely with development, infrastructure, database, and business teams to ensure smooth system operations.
• Support application deployments, releases, and change management activities.
• Analyse application logs, API transactions, and database records to identify and resolve issues.
• Manage incidents, service requests, and problem tickets through ITIL-based processes.
• Participate in on-call support and production maintenance activities as required.
• Assist with user acceptance testing (UAT), production verification, and post-release support.
• Maintain technical documentation, support procedures, and operational runbooks.

Requirements

• 7+ years of experience in Software Development with extensive experience in Java, Microservices architecture, API and ServiceNow.
• Minimum 3+ years of experience in Banking domain
• Hands-on expertise in Linux (commands, system operations)
• Good experience in Grafana and Figma designs
• Strong scripting skills experience in Shell, Python and Jython
• Experience with Monitoring Tools: Dynatrace, Splunk
• Experience in ITIL processes including Incident, Problem, and Change Management.
• Strong expertise in SQL and database troubleshooting (query optimization, performance tuning, and data analysis for incident resolution)
• Strong experience in incident management and distributed systems support , excellent troubleshooting and problem-solving skills & automation of operational tasks
• Working experience of Java (1.8+)
• Hands-on experience with Linux/Unix environments.
• Experience in AWS cloud services and cloud-based application support.
• Experience with monitoring and observability tools such as Grafana and ServiceNow.
• Strong troubleshooting and Root Cause Analysis skills.
• Experience with application monitoring, alert management, and operational support.
• Understanding of Agile and Scrum methodologies.
• Exposure to UAT coordination and stakeholder management.
• Experience working in high-availability production environments.
• Excellent communication, analytical, and problem-solving skills.
• Ability to work effectively with cross-functional and geographically distributed teams.
• Support onboarding and guidance of junior team members
• Knowledge of additional programming languages like C, C++, Go, Perl, Ruby
• Experience with performance testing tools (e.g., BlazeMeter)
• Exposure to payments or real-time transaction systems
• Understanding of DevOps and automation practices