
š§ Ā Job Description: Senior Java Developer (8+ Years Experience)
Location:Ā Mumbai, India
Employment Type:Ā Full-time, Hybrid mode of working
Company:Ā Wissen Technology
Website:Ā www.wissen.com
š About Wissen Technology
Wissen Technology is a specialized technology consulting firm delivering cutting-edge solutions to global leaders in Banking & Finance, Telecom, and Healthcare. Established in 2015 and part of the Wissen Group (founded in 2000), Wissen has scaled rapidly with impressive impact and recognition.
- š Offices in US, UK, India, Australia, Mexico, and Canada
- š„ 1700+ Wissen Technology professionals; part of a 4500-strong Wissen Group
- š Great Place to WorkĀ® Certified
- š§ Featured as a Top 20 AI/ML Vendor (CIO Insider, 2020)
- š Achieved 400% revenue growth in 5 years (with zero external funding)
- š¼ Delivered $1B+ worth of projects to 50+ Fortune 500 companies
Learn more about our work and thought leadership:
šĀ Articles by WissenĀ | š¼Ā LinkedIn
About the Role
We are seeking an experiencedĀ Senior Java DeveloperĀ with 8+ years of hands-on expertise in building scalable, high-performance applications. The ideal candidate will have strong fundamentals inĀ Java, OOPS, Multithreading, Spring concepts, and SQL, and will play a key role in designing, developing, and optimizing enterprise-grade solutions.
Key Responsibilities
- Design, develop, and maintain complex applications usingĀ Core JavaĀ andĀ Spring frameworks
- Apply advancedĀ Object-Oriented Programming (OOPS)Ā principles to deliver clean, modular, and reusable code
- Implement and optimizeĀ multithreaded applicationsĀ for high-performance systems
- Work withĀ SQL databasesĀ for efficient data modeling, query optimization, and integration
- Collaborate with cross-functional teams to gather requirements and translate them into technical solutions
- Conduct code reviews, troubleshoot issues, and ensure adherence to best practices
- Mentor junior developers and contribute to technical knowledge sharing within the team
- Ensure application scalability, performance tuning, and security compliance
Required Skills & Qualifications
- Bachelorās/Masterās degree in Computer Science, Engineering, or related field
- 8+ years of professional experience inĀ Java development
- Strong expertise inĀ Core Java, OOPS, and Multithreading
- Hands-on experience withĀ Spring conceptsĀ (Spring Core, Spring MVC, Spring Boot preferred)
- Proficiency inĀ SQLĀ and database design (MySQL, Oracle, PostgreSQL, etc.)
- Solid understanding of software development life cycle (SDLC) and Agile methodologies
- Strong analytical, problem-solving, and communication skills
š Why Wissen?
Join a company that combines start-up agility with enterprise stability. Work alongside some of the brightest minds from institutions like MIT, Wharton, IITs, IIMs, and NITs. Be part of mission-critical projects for Fortune 500 giants, and grow in a culture that invests in your future.

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 WorkĀ®. 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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Job Title:Ā Java Developer
Location: Mumbai
Job Type:Ā Full-TimeĀ
Experience Level: 4- 8 years
Job Overview:
We are looking for a highly skilled Java Developer to join our development team. As a Java Developer, you will be responsible for designing, developing, and maintaining robust Java applications that meet high standards of performance and reliability. The ideal candidate will have strong analytical skills, excellent problem-solving capabilities, and a deep understanding of Java and its ecosystem.
Key Responsibilities:
- Design, develop, and maintain reliable Java applications.
- Collaborate with cross-functional teams to analyze requirements and translate them into technical solutions.
- Write clean, efficient, and scalable code.
- Develop and integrate APIs and web services.
- Conduct software analysis, testing, and debugging.
- Optimize application performance, scalability, and security.
- Participate in code reviews and contribute to best practices.
Required Skills:
- Proficiency in JavaĀ and Java EEĀ (Enterprise Edition).
- Strong understanding of Object-Oriented Programming (OOP)Ā concepts.
- Experience with Spring FrameworkĀ (Spring Boot, Spring MVC) and Hibernate.
- Familiarity with RESTful APIĀ design and development.
- Knowledge of SQLĀ and database management systems like MySQL, PostgreSQL, or Oracle.
- Experience with version control systems like Git.
- Familiarity with build tools like MavenĀ or Gradle.
- Solid understanding of application security, data protection, and performance optimization.
Java Developer Requirements
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Minimum 7 to 15years of experience in Java/J2EE
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Outstanding skills in Java Struts, JSP, Hibernate
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Capability to understand DB design, SQL queries
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Experience in JavaScript, JQuery, JSON and AJAX
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Strong Object Oriented Analysis and Design skills
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Knowledge in source version control such as GIT
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Understanding on Agile methodologies
No of Opening: 7
Location: Chennai/Madurai (WFO)
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Degree in Computer Science or related field.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Experience with user interface design, database structures, and statistical analyses.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Analytical mind-set and good problem-solving skills.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Excellent written and verbal communication.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Good organizational skills.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Ability to work as part of a team.
Ā·Ā Ā Ā Ā Ā Ā Ā Ā Attention to detail.
Ā
designers set out to redefine the credit card for you - the consumer. The result is OneCard - a credit card reimagined
for the mobile generation. OneCard is India's best metal credit card built with full-stack tech. It is backed by the
principlesofsimplicity,transparency,andgivingbackcontroltotheuser.
The Engineering Challenge
āRe-imagingcredit andpayments fromFirstPrinciplesā
Payments is an interesting engineering challenge in itself with requirements of low latency, transactional guarantees,
security, and high scalability. When we add credit and engagement into the mix, the challenge becomes even more
interesting with underwriting and recommendation algorithms working on large data sets. We have eliminated the
current call center, sales agent, and SMS-based processes with a mobile app that puts thecustomers in complete control.
To stay agile, the entire stack is built on the cloud with moderntechnologies.
Checkoutourappshere:
OneCard(Bestcreditcardapp):www.getonecard.app
OneScore (Over 12 million downloads): www.onescore.app
JD - Sr. Software Engineer - Backend
FPL is hiring an experienced Backend Developer who is passionate about developing apps andloves to work in a fast
paced environment.
Desired Experience
3-5 years with technical hands-on experience in building large-scale B2C applications catering to millions of
users. Previous experience in building scalable products is a must
What you will do
⢠Be a part of our backend for frontend/ credit card processing engineering teams to build the best home-grown credit card
stack
⢠Partner with the product teams to understand the product features and specifications, translate them into high level and lowlevel design
⢠Work with frontend and backend developers to build out a customer-centric experience that will constantly evolve
⢠Respond to support team tickets as needed to resolve bugs and issues
⢠Participate in contributing ideas, updates, and product development areas to the team
Technical Expertise
⢠Strong insight into Java programming language (Class loading, Memory Management, Transactions, Executors, Lambdas
and Streams)
⢠Experience in distributed technologies, real-time, high throughput and low latency systems
⢠Hands-on prior experience with scalable Cloud based architectures
⢠Experience in one or more frameworks like Spring is a plus but not required
⢠Proficiency in data structures & algorithms
⢠Strong problem solving and analytical skills
⢠Any experience in payments is a plus
2. Responsible for doing customer API integrations and other integrations required to onboard new e-commerce marketplaces, logistic providers, ERP and accounting systems. 3. Responsible to write code for API integrations, perform debugging tasks, do application tests, do configuration and code reviews to ensure the product is satisfactory.
Ā The candidate would provide the firms SASS platform with ongoing technical support. This support includes responding to customer issues, providing updated software that solves bug issues, and working with the customer service team.
As Back end developer, we expect you to be motivated in solving real-life complex problems and create compelling experiences for our Resellers. Being a small company we have a culture of creative problem solving, intellectual design, fast-paced development, and passionate product delivery. Enhance or build Restful web services for our mobile app.
Ā
Responsibilities:
- Develop server-side components, REST APIs
- Assume ownership for existing and new modules including design, development, and unit testing for enhancements of existing modules and development of new modules.
- Analyse problems logically and exercise sound judgment in defining, evaluating, and solving difficult technical and operational problems where solutions may be of a precedent-establishing nature.
- Lead the design and architectural improvements
- Participate and collaborate with team members in design discussions, determines areas of complexity, potential risks to successful implementation, suggest enhancements to architecture, implement POCs, and enhance application.
- Reduce technical debt with quality coding
Ā
Requirements:
- A solid grounding in Computer Science fundamentals (based on a BS or MS in CS or related field) from IITs and Premier Engineering College.
- Excellent Object Orientation, coupled with excellent problem solving and debugging skills.
- Highly skilled at Java and related technologies, including Java Frameworks like Spring-boot or Drop wizard, RESTful web services, JSON, Servlet, JSP, MySQL, MongoDB, Kafka, AWS Solr.
- Must have hands-on experience in building scalable and secure back end systems.
- Have hands-on experience with systems that are asynchronous, RESTful and demand concurrency
- Good to have knowledge of best software engineering practices for all stages of the software development life cycle, including coding standards, code reviews, testing, deployment.
- 2+ years of experience building REST APIs with Java
- 1+ years of experience in maintaining REST APIs documentation.
- 2+ years of experience programming and delivering in a production environment
- Expertise working with data structures and algorithms
- Proficiency in object-oriented programming and experience applying modern design patterns.
Job Description
- Contribute in all phases of the development lifecycle
- Understand/learn the existing applications
- Provide support on IT Applications to customers
- Prepare and produce build release
- Strive for continuous improvement, developing well designed and efficient code
- Keep up with changes in technology and propose solutions
- Ensure defect free deliveries by actively participating in quality assurance
Education & Job Qualification
Ā
- Good academic qualifications
- Experience in developing web applications using Java, Spring, Hibernate, DWR, JSP
- Knowledge in Oracle Database concepts
- Sound knowledge in the following is a must
o Hibernate
o Spring
o Oracle & MongoDb
o HTML & CSS
o Javascript
o Jquery
o Angular 4
o Node JS
Knowledge of Japer Reports will be an added advantage - Good communication skills and be a good listener
- Problem solving skills
- Willingness to learn and do all development activities including quality assurance
- Team player
Ā
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








