
We are seeking a skilled Java Developer with 5+ years of experience in Java, Camunda, Apache Camel, Kafka, and Apache Karaf. The ideal candidate should have expertise in workflow automation, message-driven architectures, and enterprise integration patterns. Strong problem-solving skills and hands-on experience in microservices and event-driven systems are required.

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Java Developer – Job Description
Wissen Technology is now hiring a Java Developer with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL.
We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team.
A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consultancy.
Required Skills:
• Exp. - 4 to 9 years.
• Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low latency client facing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development.
• Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.
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
- Understand the fundamentals of Software Engineering, such as Data Structures, Algorithms, Design Patterns
- Ability to write Java applications using Spring, Springboot or any other microservices frameworks
- Experience in the development of REST applications, in Java or Kotlin
- Capable of writing effective APIs
- Solid knowledge of JVM fundamentals such as classloading, memory management, garbage collection
- Demonstrated experience in platform API design and development
- Knowledge on microservice and event-driven architecture
- Experience in working with version control frameworks such as Git (preferable), SVN
- Experience with NoSQL databases (MongoDB or Cassandra) & Relational Databases
- Solid understanding of TDD & Agile principles such as CI / CD, with a proven track record of implementing solutions centred around those concepts
- Excellent communication, collaboration, reporting, analytical and problem solving skills
About Company
Helical Insight an open source Business Intelligence tool from Helical IT Solutions Pvt. Ltd, based out of Hyderabad, is looking for a product engineer having strong knowledge on Java. Helical Insight has more than 50+ clients from various sectors. It has been awarded the most promising company in the Business Intelligence space. We are looking for rockstar developers to join our product team.
Job Brief
We are looking for some good candidates with the below-mentioned skill set. We are open to really good candidates with a knack to learn & with the right attitude, even if they don't fulfill the entire criterion mentioned below.
Skill set and Qualification required
Mandatory Experience/knowledge with
- Java , J2EE, Junit
- Servlets , JSP
- SQL
- Spring Framework, Hibernate
- Data Structure, Design Patterns, Multi-threading
- JSON
- Apache Tomcat Web Server
- Problem Solving and Algorithms.
Nice to have
- Knowledge in Business Intelligence and Data Warehousing Knowledge, Database knowledge, Machine Learning.
Work Experience: 2-4 Years
Education: BE/ BTech/ MTech/ MS in Computer Science, or equivalent preferred.
- Mandatory skills: Spring boot, Hibernate, Microservice
- Strong Java skills including Java 8 features
- Good understanding of Microservices-based architecture and the related ecosystem
- Exposure to MS SQL Server, Sybase etc. and NoSQL databases like MongoDB is also preferred.
- Great OO skills, including strong design patterns knowledge
- Strong knowledge of software best practices, like Test-Driven Development (TDD) and
- Continuous Integration (CI)
- Strong Knowledge of Data Structures & Algorithms
- Experience in working with data-driven RESTful APIs using web frameworks like SpringBoot,etc.
- Should be able to do data modeling
- Good understanding of ORMs like Hibernate, JPA, etc.
- Strong debugging skills
- Familiarity with architectural/ design patterns
- Advanced knowledge of Agile methodology.
Department: Information Systems
Reports to: Tech Lead - Regulatory Reporting IT, Product Control IT & Reference Data IT Internal Development & Support
About the Department: Information Systems
The Information Systems Department (‘ISD’) provides a full range of state of the art technology services to all departments within Mizuho International plc in London. This includes teams servicing the client-facing business units, Operations, Finance and Risk departments.
The department utilises modern delivery methodologies & techniques including Agile, Containerisation & Continuous integration.
Each team has resources to provide project management, analysis, software development, package implementation, systems integration services and application support and is expected to contribute to the change.
Primary Responsibilities
Summary
Within Regulatory Reporting, Reference Data & Product Control IT team, the developer will work towards enhancing and supporting our newly delivered financial data reference data platform, GoldenSource. This requires involvement in development and post production support project life cycle. This role will expose the individual to all business areas, including front office, settlements, custody and accounting.
This role will also involve providing 3rd Line support for any implemented solutions including incident, problem, and defect management
Specific Responsibilities
Design and development of the instrument reference data module
Conduct systems testing and support user acceptance testing
Dealing with day-to-day production problems and maintenance. This may require working shifts and/or being on-call out of normal working hours.
Adhering to Mizuho International development standards and procedures, including change control
Person Specification
Essential
Knowledge of the GoldenSource product
Experience in implementing and supporting the GoldenSource product in a financial institution
Minimum five years’ experience in Java and J2EE
Experience in using object oriented methodologies
Desirable
A broad understanding of Fixed Income, Equity and/or Futures processing through investment banking experience
Experience in using TDD/BDD agile methodology
Technical Knowledge/Skills
Essential
Experience with Publish/Subscribe messaging paradigms, distributed transaction processing based on JTA/JTS
Experience with installing, configuring and monitoring JBoss
GoldenSource Security master module
GoldenSource Customer & Counterparty module
UNIX skills in particular Linux
Excellent relational database skills, preferably ORACLE
Experience of using automated testing tools such as JUnit and mocking libraries such as jMock
Experience of working with XML based technologies such as XSLT
Desirable
Experience of Subversion, Ant, Maven and CI frameworks such as Bamboo.
Building connectors using the GoldenSource product tools
Experience of software configuration management
Experience with integration/acceptance testing frameworks such as FitNesse
WebServices
Document database experience, preferably MongoDB
Experience of Javascript on the client and Node.js
Qualifications
Degree or equivalent.
Active participant in relevant forums/external working groups.
Key Behaviors/Competencies
Operational Effectiveness and Innovation: Achieving Quality Results:
Delivering Tasks – Silver
Problem Solving – Silver
Flexibility & Drive to Improve – Silver
Risk Awareness – Silver
Enhance product Scope:
Strategic Business Management – Silver
Business Awareness – Silver
People:
Leadership – Silver
Management – Silver
Communication – Silver
Ethics and Conduct Level 1 – Silver
Ethics and Conduct Level 2 – Silver
Client Centricity – Silver
Effective Collaboration:
Team Working in Your team – Silver
Team Working With Other Teams – Silver
Location: Sargasan, Gandhinagar
Experience – 3 to 5 years
Education –ME, BE in computer science , BCA & MCA
Salary Budget – Based on experience and interview ( normally 10% to 15% hike in current salary )
Job Description
We are looking for an analytical, results-driven Back-end Developer who will work with team members to troubleshoot and improve current back-end applications and processes. The Back-end Developer will use his or her understanding of programming languages and tools to analyze current codes and industry developments, formulate more efficient processes, solve problems, and create a more seamless experience for users. You should have excellent communication, computer, and project management skills.
To succeed as a Backend Developer, you should be focused on building a better, more efficient program and creating a better end-user experience. You should be knowledgeable, collaborative, and motivated.
Back-end Developer Responsibilities:
Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement.
Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
Developing ideas for new programs, products, or features by monitoring industry developments and trends.
Recording data and reporting it to proper parties, such as clients or leadership.
Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members.
Taking lead on projects, as needed.
Implement complex business application using Java (Spring Boot)
Build REST APIs that serve our frontend apps as well as other clients
Create scalable and distributed microservices
Rearchitect existing applications to move to a future-proof architecture
Streamline automated deployment and DevOps flow
Deploy on AWS
Back-end Developer Requirements:
Bachelor’s degree in computer programming, computer science, or a related field.
Design & development of J2EE applications using Java EE, Spring, hibernate & Linux
Should have exposure to multithreading and Concurrent Programming.
Extensive experience in application development using Java (Spring Boot and Spring REST)
Exposure to a microservices architecture
Exposure to RabbitMQ or Kafka is highly desirable
Experience in Hibernate or equivalent ORM Framework
Experience with CICD using Gitlab or AWS CodePipeline or AWS CodeDeploy
Familiarity with NoSQL Databases like MongoDB or Cassandra
Exposure to AWS is highly desirable
Exposure to Kubernetes is highly desirable
Strong understanding of the web development cycle and programming techniques and tools.
Focus on efficiency, user experience, and process improvement.
Excellent project and time management skills.
Strong problem solving and verbal and written communication skills.
Ability to work independently or with a group.
Willingness to sit at desk for extended periods.


Job Position: JAVA Software Engineer
Job Location: Bangalore
Experience: 2 to 12 years
Job Responsibilities:
• Responsible for developing Web Applications using J2EE components.
• Responsible for developing standalone applications using Core Java and JDBC.
Desired Qualification: BE / B.Tech / MCA / MSc in Computer Science or IT
Added advantage: Sun Certified Java Programmer (SCJP), Sun Certified Web Component Developer (SCWCD) certification
Desired Skills:
- Strong skills in JAVA programming languages and focus specially on the following areas Servlets, JSP, Web Services, Struts framework, JDBC/JPA/mybatis (ibatis)/Hibernate, Threads, Collections and Design Patterns.
- Strong skills in web technologies HTML 4/5, JQuery, AJAX, Java Script and CSS.
- Thorough understanding of Object Orientation.
- Above average skills in SQL with familiarity in any of the standard RDBMS – MySQL, MSSQL or Oracle.
- Must have good written and oral communication in English language.
- Must be completely hands-on and an individual contributor and a self-starter; must be able to complete assignments (suitable to his/her experience) with minimal assistance.
- Very good at Analytical and Logical skills.
- Solid understanding of the web development lifecycle.
- Ability to learn quickly and deliver software on time.
- You will be responsible for design, development and testing of Products
- Contributing in all phases of the development lifecycle
- Writing well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
- Some of the technologies you will be working on: Core Java, Solr, Hadoop, Spark, Elastic search, Clustering, Text Mining, NLP, Mahout and Lucene etc.



