Senior Java Developer at Wissen Technology · Mumbai · 5 - 10 years · Profitable · Posted 13 Sep 2026

Experience in Core Java, Spring Boot.
• Experience in microservices.
• Extensive experience in developing enterprise-scale systems for global organization. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should be able to analyze, design, develop and test complex, low-latency client-facing applications.
• Good development experience with RDBMS in SQL Server, Postgres, Oracle or DB2
• Good knowledge of multi-threading
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Java
• Strong interpersonal, communication and analytical skills.
• Should be able to express their design ideas and thoughts

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.
Connect with the team
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Design, develop, test, and maintain scalable backend applications using Java.
Develop and maintain RESTful APIs and backend services.
Work with Spring Boot, Spring MVC, and related Java frameworks.
Design and optimize database queries and data models.
Integrate applications with internal and third-party APIs/services.
Write clean, maintainable, reusable, and well-documented code.
Troubleshoot production issues and identify root causes.
Improve application performance, reliability, security, and scalability.
Participate in code reviews and follow software engineering best practices.
Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions.
Contribute to application architecture and technical design decisions.
Must have
Experience in the Core Java development
Good understanding of Object Oriented Design, Design Patterns and data structure algorithms
Experience in Multi-threading, Hashmaps, Collection arrays
Experience in Java collections
Experience in developing applications using Spring Boot
Proficient in building Micro Services with Java 1.8 or higher, J2EE, Spring, Spring Boot.
Proficient with No SQL and Relational Databases
Hands on experience in Unit testing frameworks like Junit / Mockito OR TDD
JOB DESCRIPTION
Experience: 4-9 years
Wissen Technology is now hiring for a Java Developer - Bangalore 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. 4-9 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.
Total Experience: 2+ years
Mode Of Hire: Permanent
Required Skills Set (Mandatory): Object Oriented Programming, data structures, algorithms, software design, and database systems.
Desired Skills (Good if you have): Springboot, ElasticSearch, MongoDB, MySQL, Redis, Crawling/ Web Scraping, Programming languages(Java, Python, C, C++)
Job Responsibilities
- Collaborate with Managers and other Engineers to help define, scope, and implement high-quality features that solve critical user needs.
- Break down requirements into architecture and deliver code, while keeping operational issues in mind.
- The ability to own end-to-end responsibility right from the requirement to release.
- Write clear documentation so that other engineers can jump in and get things done.
- Actively participate in design and code reviews.
- Help take Tracxn to the next level as a world-class engineering team
Job Requirements
- Experience with building backend services. Strong algorithm and CS skills.
- Experience designing and implementing large‐scale distributed systems.
- Experience with multiple programming languages (Java, Python) and data stores (MongoDB, MySQL, Redis, etc)
- Proven ability to work in a fast-paced, agile, and in ownership, and results-oriented culture.
- Strong problem-solving and analytical skills.
Culture
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
About Tracxn
Tracxn (Tracxn.com) is a Bangalore-based product company providing a research and deal sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals working around the startup ecosystem. We are a team of 800+ working professionals serving customers across the globe. Our clients include Funds like Andreessen Horowitz, Matrix Partners, GGV Capital, and Large Corporations such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team
Tracxn's Technology team is 50+ members strong and growing. The technology team is subdivided into multiple smaller teams, each of which owns one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure where almost everyone is actively involved in technical development and design activities. We have a team-centric culture where the ownership and responsibility of a feature or module lie with a team as compared to an individual.
We work on an array of technologies, including but not limited to Spring, Elastic Stack, Kafka, Mongo, MySQL, Redis, ReactJS, Next.js, Node, AWS Lambda, Ansible, etc.
We value ownership, continuous learning, consistency, and discipline as a team.
Job Summary:
We are seeking highly skilled Java Developers with hands-on experience in developing
enterprise-scale applications, preferably within the financial services domain. The role
requires expertise in Core Java, Microservices, and high-performance server-side
development.
Key Responsibilities:
• Design, develop, and maintain enterprise-scale n-tier applications in the financial
domain.
• Develop complex, low-latency, client-facing applications with a focus on performance
and scalability.
• Work with Microservices architecture, Data Structures, OOPs, Algorithms, and
Multithreading.
• Perform high-level and low-level design for critical applications.
• Collaborate with cross-functional teams to define, design, and deliver new features.
• Ensure best practices in coding, architecture, and application performance.
Requirements:
• Strong experience in Core Java 5.0 and above, Spring, and CXF.
• Extensive experience in enterprise application design patterns and architecture.
• Strong development experience with RDBMS (preferably Sybase).
Experience: 7+ years
Location: Mumbai
Mode of Work: Hybrid
• Hands-on expertise in multithreading and high-volume server-side applications.
• Experience in sales and trading platforms in investment banking/capital markets.
• Basic working knowledge of Unix/Linux.
• Excellent problem-solving and coding skills in Java.
• Strong interpersonal, communication, and analytical skills.
• Ability to express design ideas and collaborate effectively with teams
Experience: 3-5 years
Wissen Technology is now hiring for a Java Developer (with Azure) - Bangalore 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. - 3-5 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.
JOB DESCRIPTION
Experience: 3-9 years
Wissen Technology is now hiring for a Java Developer - Bangalore 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. - 3-9 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.
JOB DESCRIPTION
Experience: 4+ years
Wissen Technology is now hiring for a Java Developer - Bangalore 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. 4+ 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.
Eligibility:
- Only IIT / NIT graduates
- Immediate joiners preferred
Mandatory Skills:
- Strong experience in Core Java
- Spring Boot & Microservices
- REST APIs
- SQL / Relational Databases
- Data Structures & Algorithms
- Strong problem-solving skills
- Experience in designing scalable backend applications
Good to Have:
- Cloud (AWS/Azure/GCP)
- Kafka / Messaging Systems
- Docker & Kubernetes
Interested candidates who meet the above criteria can share their updated resume along with:
- Total Experience
- Current CTC
- Expected CTC
- Notice Period
- Current Location
Urgent Requirement 🔥
👉 Java Backend with AWS
👉 Java Backend with React, Spring Boot, Microservices
Exp: 3+ Yrs
Loc: Chennai, Bangalore, Hyderabad
Immediate Joiners Preferred!






