
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.
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Build distributed, highly available, and fault-tolerant applications using Java, Spring, Kafka, and other technologies
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Build, deploy, release, and support applications in the early stages
Skills
Must have
Overall 10+ years of experience as a Java Developer
Core Java 10+ years
Good hands-on coding skills
Must have experience in investment banking-related projects
Should have working experience in Trading life cycle project
Spring framework 5+ years
Kafka or other messaging
Knowledge of key APIs: JPA, JTA, CDI, etc.
Knowledge of various design and architectural patterns
Understanding of microservices architecture
Containerization solutions (e.g. Docker, Kubernetes, OpenShift)
Building tools (e.g. Maven, Gradle)
Version Control (e.g. Git)
Continuous Integration systems (e.g. TeamCity, Jenkins)
Experience in the finance industry and work with the Fintech community
Experience 8+ Yrs.
Bangalore work from office
1. Bachelor's degree or above, computer or related major, more than 5 years of Java EE development experience.
2. Have a solid foundation in JAVA, have strong OOP and OOD development ideas, and be familiar with various design patterns. Have strong coding skills, have business design experience, and be able to solve more complex technical problems.
3. Proficient in using mainstream JAVA open-source frameworks, such as Spring, Spring boot, Spring cloud, myBatis, etc.
4. Familiar with MySql, capable of database design and optimization, familiar with redis caching technology, familiar with message middleware, and ElasticSearch.
5. Familiar with distributed development and application scenarios of distributed components
6. Have some experience in concurrent processing and be familiar with performance optimization
7. Have strong learning ability, communication ability, teamwork ability and independent problem-solving ability, high sense of responsibility, and be able to withstand greater work pressure. Able to guide junior engineers and specialists to complete simple business development work.
Note: Kindly apply only if your open to Work from Office Bangalore and available to join immediate to 10 days.
Interested candidates connect @Bhavani P on the LinkedIn
or message your number/ id on the cut short chat.
- Working knowledge of XML, JAVA, REST, SOAP etc
- Basic knowledge of SQL, including the ability to author ad-hoc database queries.
- Is comfortable writing code in Ruby, Python, JavaScript, and Java and enjoys learning new languages and technologies.
- Has experience integratingĀ APIs (major plus)
- Experienced integrating RESTful APIs into web applications (a plus)
- Is experienced with Github or the likes.
- Should have worked on Payment Gateway Applications.
- Has a technical degree in Computer Science, Engineering or Mathematics (MBA is an asset)
- Technical Product/Software certifications an asset
- Has 3 to 5 years of experience in a similar client-facing role
- Has previous experience in a traditional software engineering or Implementation role.
- Has strong analytical and debugging skills.
- Experienced with Salesforce is a plus
- Solution-driven, able to grasp new concepts quickly and efficiently, able to work alone or in a team, able to work with no supervision and under pressure
- Excels in a collaborative and cross-functional environment.
- Demonstrates professional communication skills on technical and business-related subjects
- Experience working with payment gateways a major plus including ecommerce and Retail Experience with continuous integration and test-driven development methodologies a plus
- Excellent time management, organization, and planning skills are essential
- Flexibility to travel as required to meet with clients
- Ability to comprehend and translate complex technical issues and apply to business solutions
- Demonstrate ability to articulate complex technical terms or processes into business language
- Ability to synthesize technical information and apply to business solutions
- Able to set priorities, influence others, and manage customer and partner expectations
- Demonstrated success in customer and partner relationship management
- You are motivated, think outside of the box, and understand the purpose of process and procedures
Java, Java8, Springboot, Microservices, core java, j2ee, JAVA, Springboot
backend, core java, java8, micro services
Looking candidated from service base or service division of any company.
Minimum Qualificationā:
- Hands-on working on Java ( {Language understanding - Java 8, Lambdas, Collections, popular frameworks & libraries}, JVM, GC tuning, performance tuning)
- Worked on REST frameworks/libraries like Spring MVC, Spring Boot, Dropwizard, REST Express etc
- Worked on Relational data stores viz. MySQL, Oracle or Postgres
- Worked on Non-relational data stores viz. Cassandra, HBase, Couchbase, MongoDB etc
- Worked on caching infra viz. Redis, Memcached, Aerospike, Riak etc
- Worked on Queueing infra viz. Kafka, RabbitMQ, ActiveMQ etc
- The ideal candidate must have experience in enterprise application design, system performance and scalability
- 5+ year experience in web services, distributed systems, and highly available and scalable applications.
- Strong object-oriented programming skills in Java
- Very good knowledge of Core Java and J2EE and should have worked on high availability, low latency platforms.
- Ability to question status quo and identify bad design/code patterns which can impact performance and maintainability of the code.
- Excellent understanding of system design and design patterns.
- Previous experience with the Agile methodology.
- Experience in developing robust RESTful services is desirable.
- Have very good communication skills
- Have strong experience in the Spring framework.
- Good experience in SQL/Oracle
- BS degree in computer science or related fields. MS degree desired
BiddanoĀ is seeking for an analytical, result driven, multi-skilled candidateĀ for design for the position of Backend Developer. He/She will be responsible forĀ 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.
Ā The ideal candidate will have strong personal accountability for results, strong commitment to teamwork in support of the company's success, adherence to ethical business practices, and comfort operating in a start-up environment with an ability to prioritize and drive actions to closure.
a start-up environment with an ability to prioritize and drive actions to closure.
Backend Developer
Responsibilities:
- Participate in the entire application lifecycle, focusing on coding and debugging
- Write clean code to develop functional REST APIs Using Django/Python or NodeJs
- Troubleshoot and debug applications
- Perform unit test cases to optimize performance
- Manage cutting-edge technologies to improve legacy applications
- Collaborate with Front-end developers to integrate user-facing elements with server side logic
- Gather and address technical and design requirements
- Provide training and support to internal teams
- Build reusable code and libraries for future use
- Liaise with developers, designers and system administrators to identify new features
- Follow emerging technologies
Skills Required:
- Proven work experience as a Back-end developer
- In-depth understanding of the entire web development process (design, development and deployment)
- Hands on experience with programming languages like Python (Required), typescript(Required),Ā Java.
- Working knowledge of CMS framework
- Familiarity with back-end languages (e.g. HTML, JavaScript and CSS)
- Excellent analytical and time management skills
- Backend:
- Django/DjangoREST, Python (Prefered) or NodeJs.Ā
- Good experience of microservices.Ā
- Hosting and Deployment Solutions:
- Good understanding of AWS which includes(All required):
- Good expertise in Linux.
- EC2 instance management.
- Scalability (Horizontal or Vertical) which includes autoscaling.
- Proper use of S3 for static file management.Ā
- SNS or AWS email service.
- AWS resource cost optimization.Ā
- Proper knowledge of Load Balancers.
- Teamwork skills with a problem-solving attitude
Experience :
- Minimum 4-7 years ofĀ experience as a Backend DeveloperĀ
- B.tech Computer Science, Engineering or similar relevant field
Java Developer
Responsibilities
ā Design and development of RESTful Web Services.
ā Hands on database experience (Oracle / PostgreSQL / MySQL / SQL Server).
ā Hands on experience with developing web applications leveraging Spring Framework.
ā Hands on experience with developing microservices leveraging Spring Boot.
ā Knowledge in Application Server Tomcat.
ā Continuous Integration tools (Jenkins).
ā Ability to communicate effectively in English, with good verbal and written skills.
ā Strong believer and follower of SDLC principles with an emphasis on Quality & Standards
based
ā development.
What we need
ā 7+ years of experience in Java/J2EE technologies
ā Core Java
ā Spring Framework
ā Spring DI, Spring AOP, Autowiring
ā Spring Boot, Kafka
ā Spring ORM / Spring Data JPA
ā Willing to learn technology/domain on demand basis
ā Good team interactions.









