Java developer

We're looking for a high-energy Java engineer to design and implement scalable microservices using Spring Boot. You'll collaborate across teams to deliver clean, efficient, and high-performance backend services.

🛠️ Key Responsibilities

• Design, develop, and maintain RESTful services and microservices using Spring Boot
• Utilize OOP, Java Collections, Exception Handling, and method overloading/overriding in modern coding practices
• Build and optimize multithreaded systems (Threads, synchronization, wait(), notify(), yield()) for performance and scalability
• Write unit and integration tests (JUnit, Mockito, Spring Test) to ensure code quality
• Collaborate with cross-functional teams (QA, DevOps, Product) through code reviews and feature planning
• Diagnose and resolve performance bottlenecksJVM tuning, SQL/caching optimizations
• Adhere to coding standards, best practices, and participate in peer code review

🎯 Required Skills & Experience

• Strong Java fundamentals: OOP, Collections, Generics, Exception Handling
• Concurrency mastery: multithreading, synchronization primitives (wait(), notify(), yield())
• Spring Boot: solid experience building, testing, deploying REST APIs
• Microservices: design, inter-service communication, stateless service patterns
• Testing frameworks: JUnit, Mockito, Spring Test
• Performance tuning: profiling, optimization with JVM settings and database queries
• Tools & practices: Git, Maven/Gradle, CI/CD pipelines, Docker/Kubernetes (plus)
• Soft skills: strong problem-solving, collaboration, and effective communication

Experience in Backend

Experience in Java ,Spring boot

Experience in Microservices

Experience in Data structure ,Algorithm

• Experience in managing medium to large scale application project from beginning to end, with skills in requirement study and functional/detail design, QA, testing, and software change/version control management is advantageous

• Expertise in application development, and familiar with C#, Asp.net, jQuery, Webservice (REST/SOAP), Microservice, WCF
• Basic Equities Trading product knowledge is expected
• Familiarity with Equities/trade processing experience is an advantage
• Strong analytical and problem-solving skill is a must
• Ability to work under pressure, handle multiple tasks and work to tight deadlines.
• High sense of ownership of task assigned, deliver applications with high quality and efficiency.
• Good communication, inter-personnel skills is required
• Team player with strong interpersonal and communications skills
• Looking for 4 – 8 years’ experience in .NET

Java - SSE/ Senior Developer

Singapore

Company Profile: Nucleus Software has been providing Products and Services to various Global and Regional Financial institutions, from past 36 years. As a pioneer IT Service provider, Nucleus carry deep banking domain expertise and experience on latest technological trends. Nucleus’s developed platforms powers the operations of more than 150 institutions in 50 countries, supporting multiple business veritcals, accessible through Mobile and internet channels

JOB ROLE & RESPONSIBILITIES

• Develop & support application through all stages of the project life cycle, including Design, Construction, Testing support and Warranty support
  
  
• Having experience in Java 1.6 and above, JEE, Spring, Struts,microservices ORM and Oracle.
  
  
• Good understanding of Design Principles and Object-Oriented Programming
  
  
• Develop Low level design documents
  
  
• Responsible for Coding, Developing Test cases using Junits, Unit Testing
  
  
• Adhering the schedule and scope of the project
  
  
• Ensure to follow the Technology and Process standards set for the project
  
  
• Produce high quality technical delivering for the customer
  
  
• Interact with project lead to review technical deliverables
  
  
  

Key deliverables

• Design and Develop Programs with high quality and agreed processes, within the planned schedule
  
  
• Review Unit Test Cases with Project Lead
  
  
• Design, Develop and Unit Test
  
  
• Technical Design documents (LLD)
  
  
• Support throughout testing, implementation and warranty phases
  
  

Desired for the Position:

• Hands on experience in Designing and Developing web applications using Java EE platforms (Spring, Struts, EJB), ORM and Oracle Database)
  
  
• Strong background of Object-oriented analysis and design using common design patterns
  
  
• Profound insight of Java and JEE internals (Class loading, Memory Management, Transaction management etc)
  
  
• Good knowledge of Relational Databases (Oracle) and PL/SQL
  
  
• Carries good analytical and communication skills

Location: Base: Chennai , Bangalore and Noida, Projects-Singapore

Package: upto 17 L

Experience: 5 yrs

• Programming Language: Java, J2EE
• Framework: Spring MVC, Spring Security, Hibernate, JMS
• Strong knowledge in any one Relational Databases (Mysql / Oracle/ SQL Server).
• Operating System: Windows & Linux.
• Configuration Management: GIT
• Tools & Utilities: STS / Eclipse / IntelliJ / NetBeans.Web/Application Server: Jboss.
• Excellent hands-on experience and knowledge of SQL.
• Strong experience in Web services (SOAP and RESTFUL).
•  Should have expertise in Design Patterns, Transactions, Multi-threading concepts.
• Experience using Maven.
•  Knowledge of data structure

• Deliver entire application life cycle - concept, design, build and test complex web applications.
•  Gather requirements around functionality and translate those requirements into elegant functional and technical solutions.
•  Collaborate with cross-functional teams to define, design, and ship new features.
• Unit-test code for robustness, including corner cases, usability, and general reliability.
•  Perform bug fixing and ensure acceptable application performance.
• Continuously upgrade knowledge on technology changes, evaluate impact to application, and implement changes to ensure minimal latency in application availability to users.
•  Work closely with project/product managers while effectively working across multiple projects and delivering to deadlines.
• Mentor the team members on the nuances of technology and implement best practices within the team.

• Independently own one or more multiple modules, which includes: requirement analysis, design, development, maintenance & support
• Write extensive, efficient code to address complex modules and that handles interaction between multiple components. 
• Rapidly iterate to add new functionalities and solves complex problems with simple and intuitive solutions
• Produce architecture with clean interfaces, that are efficient and scalable
• Participate and contribute to architectural discussions
• Perform design and code reviews
• Perform technical feasibility and trade off studies & guides others to perform these studies
• Solve production issues. Investigate and provide solutions to minimize the business impact due to outage
• Continuously improve performance metrics of modules you own.
• Actively mentor and develop junior developers in all software development practices
• Participate in the hiring process (referrals, interviews, attending recruiting events or writing blogs)
• Onboard and mentors new team members, helps shape the culture of the team