
JOB DESCRIPTION:
Location: mumbai, bangalore, pune
Mode of Work : 3 days from Office
DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API
- Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
- Implement and integrate APIs using Spring Framework and Apache CXF.
- Build microservices-based architecture for scalable and distributed systems.
- Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
- Optimize performance through efficient multithreading, memory management, and algorithm design.
- Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
- Work with RDBMS (preferably Sybase) for backend data integration.
- Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
- Work in Unix/Linux environments for deployment and troubleshooting.
Required Skills & Experience:
- 3– 8 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
- Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
- Proven experience with Spring, CXF, and REST/SOAP web services.
- Solid understanding of microservices architecture and distributed systems.
- Experience working with Sybase or other relational databases.
- Expertise in multithreading, concurrency, and high-throughput server-side development.
- Exposure to capital markets, sales & trading platforms, or similar financial services applications.
- Good working knowledge of Unix/Linux environments.
- Experience in solution architecture and design documentation is a strong plus.
- Strong problem-solving skills, analytical thinking, and a proactive attitude.
- Excellent communication and interpersonal skills to work effectively with global teams.
Preferred Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
- Previous experience in investment banking, capital markets, or financial technology domains.
For more details:
Website: www.wissen.com
Wissen Thought leadership : https://www.wissen.com/articles/
LinkedIn: Wissen Technology

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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Hiring: Lead Java Developer | Bangalore / Mumbai | Immediate Joiners
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Location: Bangalore / Mumbai
Education:
- Only IIT / NIT Graduates
- B.E./B.Tech Mandatory
Mandatory Skills:
- Strong Core Java Experience
- BPMN (Business Process Model and Notation)
- Experience with AI-Powered Code Generation Tools (GitHub Copilot, Cursor, etc.)
- System Design & Architecture
- Strong Problem-Solving Skills
- Experience Leading Development Teams
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- 8+ years of hands-on experience in Java development
- Lead-level experience preferred
- Immediate joiners only
- Excellent communication and stakeholder management skills
We are seeking a highly skilled C++ Developer with 6–9 years of experience to design,
develop, and maintain high-performance software applications. The ideal candidate will
have a strong foundation in object-oriented programming, data structures, and
system-level programming, with a focus on delivering efficient and scalable
solutions.
Key Responsibilities:
Design, develop, and maintain robust and efficient applications using C++.
Write clean, maintainable, and optimized code following best practices.
Debug, troubleshoot, and resolve performance bottlenecks and issues.
Collaborate with cross-functional teams, including QA, DevOps, and Product
Management, to deliver high-quality software solutions.
Participate in code reviews and contribute to improving coding standards.
Prepare and maintain technical documentation for development processes and
modules.
Work on integrating software components and third-party libraries.
Optimize application performance and scalability for large-scale systems.
Required Skills and Qualifications:
6–9 years of hands-on development experience in C++.
Strong knowledge of object-oriented programming, STL, and design
patterns.
Experience with multithreading, memory management, and performance
tuning.
Familiarity with Linux/Unix environments and shell scripting.
Good understanding of network programming and socket-level communication.
Experience working with version control systems like Git.
Strong problem-solving and debugging skills.
Excellent communication and collaboration abilities.
Preferred Qualifications:
Experience with modern C++ standards (C++11/14/17 or later).
Knowledge of database systems such as MySQL, PostgreSQL, or NoSQL
databases.
Exposure to cloud platforms like AWS, Azure, or GCP.
Familiarity with CI/CD pipelines and DevOps tools.
Background in Agile/Scrum methodologies.
Job Description:
• 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.
⚠️ Important Note (Please Read Before Applying):
- Only candidates with 5–8 years of relevant experience should apply.
- Freshers or candidates with less than 5 years of experience – please do not apply.
- Only immediate joiners or candidates currently serving notice will be considered.
Job Title: Java Developer (5–8 Years)
Location: Bangalore (Hybrid Mode)
Experience: 5 to 8 years
Joining: Immediate / Notice Serving Only
About the Role:
We are looking for passionate and highly skilled Java Developers to join our dynamic team in Bangalore. The ideal candidate will have strong expertise in Java, Spring Boot, Collections, Multithreading, and Data Structures & Algorithms (DSA), with proven problem-solving abilities.
Key Responsibilities:
- Design, develop, and maintain high-performance, scalable, and secure applications.
- Work with Spring Boot and related frameworks to build microservices-based solutions.
- Optimize code using Collections & Multithreading concepts for performance and reliability.
- Apply strong DSA and problem-solving skills to deliver efficient solutions.
- Collaborate with cross-functional teams to ensure timely delivery of high-quality software.
- Troubleshoot, debug, and resolve production issues efficiently.
Required Skills & Experience:
- 5–8 years of hands-on experience in Core Java and Spring Boot.
- Strong expertise in Collections, Multithreading, and Concurrency.
- Solid understanding of DSA, Algorithms, and System Design fundamentals.
- Experience in developing REST APIs and Microservices.
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- Opportunity to work on cutting-edge projects with modern architectures.
- Hybrid work setup in Bangalore.
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- Develops automated security and compliance capabilities in support of DevOps processes in a large-scale computing environment for the storage program within the firm.
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Providing technical expertise for every phase of the project lifecycle—from concept
development to solution design, implementation, optimization and support. Interacts
with a set of clients (client senior developers and architects) to create technology
specifications from business requirements for one of the modules within the project.
Prepares the technical design of the more complex technology components within the
module (one or more of client/web presentation tier, server tier, data access and data
model, integration component, package function customization).
Assists the architect in articulating the pros and cons of using a certain technology stack
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Drives the performance tuning, re-design and re-factoring for a module.
Contributes to designing and implementing the build, releases process as well as system
configuration and deployment characteristics of the application.
Required Tech Stack
2+ years of strong development skills in Java with JDK 1. 8 & above version &
Microservices with Spring boot/ Spring.
Should have strong acumen in Data Structures, Algorithms, problem-solving and Logical/
Analytical skills.
Thorough understanding of OOPS concepts, Design principles and implementation of
different type of Design patterns.
Sound understanding of concepts like Exceptional handling, Serialization/Deserialization
and Immutability concepts, etc.
Good fundamental knowledge in Enums, Collections, Annotations, Generics, Auto
boxing, etc. Experience with Multithreading, Concurrent Package and Concurrent APIs Basic
understanding of Java Memory Management (JMM) including garbage collections
concepts.
Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by,
aggregate functions, etc.)
Experience with at-least one NoSQL (Any of Cassandra/Couch base/Hadoop), Hands-on
experience with JMS
Hands-on experience in creating RESTful webservices and consuming webservices
Hands-on experience with Spring.
Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
Experience of writing Junit test cases using Mockito / Powermock frameworks.
Should have practical experience with Maven/Gradle and knowledge of version control
systems like Git/SVN etc.
Good communication skills and ability to work with global teams to define and deliver
on projects.
Sound understanding/experience in software development process, test-driven
development
About Client : Our client is an American company that develops, manufactures and sells solar micro-inverters, energy generation monitoring software and battery energy storage products
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- REST API with JSON, XML etc. for data transfer
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- Ability to develop both internal facing and external facing APIs using JWT and OAuth2.0
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- Good organizational skills and the ability to work on more than one project at a time
- Exceptional attention to detail and good communication skills
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- B.E/B.Tech in Computer Science from top tier college and >70% marks
- 70% or 7 CGPA throughout in education.
- Top 100 Engineering colleges only (NIRF ranking)
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- Experience with SQL + NoSQL (Preferably MongoDB)
- Experience with Amazon Web Services, JIRA, Confluence, GIT, Bitbucket
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- Excellent critical thinking and analytical problem-solving skills
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- Ability to communicate effectively and accurately
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- Highly skilled at facilitating and documenting requirements
- Working with Databases and Linux platform
- Understanding algorithms, databases and their space and time complexities
- Writing unit and integration tests with reasonable coverage of code and interfaces
- Solving complex and interesting problems
- Taking up a high level of ownership and commitment towards the business and product vision
What you need to have:
- Minimum 1-year experience
- Strong problem-solving skills
- Good understanding of data structures & algorithms and their space & time complexities
- Strong hands-on and practical working experience with at least one programming language: C/Java/C++/C#
- Excellent coding skills – should be able to convert the design into code fluently
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- B-Tech in Computer Science or equivalent from a reputed college
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- TDD is a plus










