
Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore/Mumbai 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 consulting. Required Skills: • Exp. - 3 to 8 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. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Key Responsibilities:
- Design and develop backend components and sub-systems for large-scale platforms under guidance from senior engineers.
- Contribute to building and evolving the next-generation customer data platform.
- Write clean, efficient, and well-tested code with a focus on scalability and performance.
- Explore and experiment with modern technologies—especially open-source frameworks—
- and build small prototypes or proof-of-concepts.
- Use AI-assisted development tools to accelerate coding, testing, debugging, and learning while adhering to engineering best practices.
- Participate in code reviews, design discussions, and continuous improvement of the platform.
Qualifications:
- 0–2 years of experience (or strong academic/project background) in backend development with Java.
- Good fundamentals in algorithms, data structures, and basic performance optimizations.
- Bachelor’s or Master’s degree in Computer Science or IT (B.E / B.Tech / M.Tech / M.S) from premier institutes.
Technical Skill Set:
- Strong aptitude and analytical skills with emphasis on problem solving and clean coding.
- Working knowledge of SQL and NoSQL databases.
- Familiarity with unit testing frameworks and writing testable code is a plus.
- Basic understanding of distributed systems, messaging, or streaming platforms is a bonus.
AI-Assisted Engineering (LLM-Era Skills):
- Familiarity with modern AI coding tools such as Cursor, Claude Code, Codex, Windsurf, Opencode, or similar.
- Ability to use AI tools for code generation, refactoring, test creation, and learning new systems responsibly.
- Willingness to learn how to combine human judgment with AI assistance for high-quality engineering outcomes.
Soft Skills & Nice to Have
- Appreciation for technology and its ability to create real business value, especially in data and marketing platforms.
- Clear written and verbal communication skills.
- Strong ownership mindset and ability to execute in fast-paced environments.
- Prior internship or startup experience is a plus.
Person should have strong knowledge in -
1. Core Java,
2. JSP
3. Spring Framework,
4. Spring Boot,
5. SOAP and REST Webservices
6. Application Security.
Person should have 4 to 6 Years of work experience in Java and the above-mentioned related technology.
Person should have good Oracle Database knowledge and have good communication skills.
Having work experience in BFSI domain will added advantage
Person needs to work from Mumbai location and also available to join the office
- Experience: 1+ yrs - 3yrs
- Key Skills:
- Expert Proficiency in anyone the below programming language - Java, Node JS, PHP or GoLang
- Expert Computer Science fundamentals like Data Structures, Algorithms, Time Complexity, and others
- Strong Microservices, REST API, Git source control, CI/CD, and other latest technology trends
- Strong System Design, DB Design proficiency
- Strong knowledge in Design Patterns, best software development practices
- Good exposure to working in Open Source stack, E-Commerce, or Fintech domain.
Radisys Corporation, a global leader in open telecom solutions, enables service providers to drive disruption with new open architecture business models. Our innovative technology solutions leverage open reference architectures and standards, combined with open software and hardware, to power business transformation for the telecom industry. Our services organization delivers systems integration expertise necessary to solve complex deployment challenges for communications and content providers.
Job Overview :
We are looking for a Lead Engineer - Java with a strong background in Java development and hands-on experience with J2EE, Springboot, Kubernetes, Microservices, NoSQL, and SQL. As a Lead Engineer, you will be responsible for designing and developing high-quality software solutions and ensuring the successful delivery of projects. role with 7 to 10 years of experience, based in Bangalore, Karnataka, India. This position is a full-time role with excellent growth opportunities.
Qualifications and Skills :
- Bachelor's or master's degree in Computer Science or a related field
- Strong knowledge of Core Java, J2EE, and Springboot frameworks
- Hands-on experience with Kubernetes and microservices architecture
- Experience with NoSQL and SQL databases
- Proficient in troubleshooting and debugging complex system issues
- Experience in Enterprise Applications
- Excellent communication and leadership skills
- Ability to work in a fast-paced and collaborative environment
- Strong problem-solving and analytical skills
Roles and Responsibilities :
- Work closely with product management and cross-functional teams to define requirements and deliverables
- Design scalable and high-performance applications using Java, J2EE, and Springboot
- Develop and maintain microservices using Kubernetes and containerization
- Design and implement data models using NoSQL and SQL databases
- Ensure the quality and performance of software through code reviews and testing
- Collaborate with stakeholders to identify and resolve technical issues
- Stay up-to-date with the latest industry trends and technologies
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 3 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large-scale social or location-based app.
B.Tech./ BE - Computer, IT, Electronics only
Required Skills:
- 3+ year of experience in Development in JAVA technology and springboot
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka
- Any Caching Mechanism
- Good at problem solving
Good to Have Skills:
- 3+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
- must have experience in Java, Spring Boot, Microservices , Kafka, API
- Developing applications that demand high availability and concurrency.
- Good understanding of DevOps concepts and processes
- Ability to write structured and well documented code
- Good knowledge of working with third-party dependencies and debugging dependency conflicts.
- Knowledge of Unit Testing and Build tools.
- Team Leading & Mentoring for Senior Developers
- Retail domain experience is added advantage.
2. Demonstrable abilities to optimize code. Strong analytical skills for effective problem solving
3. Experience in Java Spring, Hibernate, Github. Spring boot optional
Job Summary
Require a java developer having 2+ years of experience especially in Spring and Hibernate
Job Type: Full-time
Responsibilities and Duties
Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
- Contribute in all phases of the development lifecycle
- Write 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
Key Skills
JEE, JPA2 , Hibernate
Required Experience and Qualifications
Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
- Experience with test-driven development
Job Type: Full-time
- 2+ years of experience in Java Development with sound knowledge of core Java
- Should have strong hands on experience with developing web applications using Servlets and JSP, Spring, Hibernate, Web Services, HTML, JavaScript
- Should have experience of working on Tomcat/Glassfish
- Experience of Google App Engine or AWS will be added advantage
- Strong knowledge of OOAD
- Comfortable working on Linux/Unix
- Good communication skills and good organization
- Willingness to work in a team environment, as well as
- Willingness to learn new
Responsibilities:
- Write production quality code in Java, J2EE, and Spring
- Adhere to software development and source control processes, git is added Advantage
- Design, build, configure, test, and document production quality software on an iterative
- Participate in design and implementation of new software.
- Work closely with users, technical leads, project managers, and other cross-functional development
- Execute on the provided design. Active coding in key technologies is required for this development position and includes: Java/J2EE, Tomcat, Web Services, REST, and spring, Hibernate/Ibatis, XML, UNIX and
- As part of the software development process you will need to create, review, and maintain all required technical documentation related to assigned software to ensure supportability and reuse.
- This individual must develop software using disciplined software development processes, adhering to team/company standards and software best practice guidelines, and corporate policies.






