
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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- Apply object-oriented design (OOD) and GoF design patterns (Factory, Singleton, Strategy, Observer, etc.).
- Write clean, maintainable, and scalable code following best coding standards.
- Integrate applications with databases (SQL/NoSQL) and messaging systems (Kafka/RabbitMQ).
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Technical Skills Required
- ** Core Java 8+**, OOP, Collections, Multithreading
- ** Spring Boot**, Spring MVC, Spring Data JPA
- ** Spring Batch** (Job/Step configuration, Tasklets, Readers/Writers, partitioning)
- ** Microservices** (REST, API Gateway, service discovery, resilience patterns)
- ** Design Patterns** (Factory, Singleton, Adapter, Strategy, Builder, Observer, etc.)
- ** Databases:** MySQL/PostgreSQL/Oracle, MongoDB (optional)
- ** Messaging:** Kafka / RabbitMQ (preferred)
- ** Build tools:** Maven/Gradle
- ** CI/CD:** Jenkins, GitLab CI, or similar
- ** Cloud:** AWS / Azure / GCP (optional but preferred)
- ** Testing:** JUnit, Mockito
Weāre looking for a Java Backend Developer with strong experience in Spring Boot, AWS, and Microservices to join our growing team. If you're passionate about scalable backend systems and love working in a fast-paced environment, we want to hear from you!
What Youāll Bring:
- 4+ years of backend development experience
- Strong hands-on expertise in Core Java and Spring Boot
- Experience designing and developing Microservices architecture
- Solid working knowledge of AWS services
- Familiarity with RESTful APIs, version control (Git), and CI/CD
- Strong problem-solving and debugging skills
- Ability to work independently and in a collaborative team environment
- Immediate joiners are highly preferred
.Overall 5+ years of experience in application development using Java with creating and deploying microservices using the Spring Boot framework



⢠Strong experience in Maven.



⢠Good experience in unit(Junit) and integration testing.



⢠Experience in Microservices is a must.



Experience in designing and developing REST based services / Microservice development.



⢠Candidate should have good communication skills (written and verbal)



Excellent analytical and problem solving skills



Any one of these database Mongo, Maria, RMQ, Postgres, or other NoSQL servers



⢠Experience in AWS and CI/CD



5+ Years



Design, develop, and maintain robust, scalable, and secure backend services and APIs.



⢠Collaborate with frontend developers to integrate user-facing elements with server-side logic.



Write clean, efficient, and maintainable code following best practices and coding standards.



⢠Optimize performance and ensure high availability of backend services.



⢠Implement security measures to protect sensitive data and prevent vulnerabilities.



Design and manage databases, ensuring data integrity and efficient query performance.



Debug, troubleshoot, and resolve issues in production and development environments.



⢠Conduct code reviews and provide constructive feedback to team members.



Stay up-to-date with emerging backend technologies, frameworks, and best practices.



⢠Participate in Agile/Scrum ceremonies and contribute to sprint planning and estimations.
Ā
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- 4 to 10 years of industry experience in software engineering with at least 4 years in Video, Audio & Image processing and streaming technologies.
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Role: Java developer
Experience: 4+ years
Job description
ā Working experience on JAVA,Spring Boot. (on building web services?)
ā NOSQL DynamoDB knowledge is plus
ā Working experience in building micro services and distributed systems
ā Working experience on using messaging queues RabbitMQ/Kafka is plus
Ā
Job Description
Ā
Organizational Overview
Ā
It is a super app to digitize Indiaās 50M+ sales agents where they can get access to relevant products & services, receive training through interactive videos on āhow to sell, what to sell and whom to sellā, and earn money. For businesses, we help them save a huge effort in managing and training these agents and help them increase their reach to every nook and corner of the country.
India is a trust deficit market which cannot be accessed through Internet Marketing on Facebook and Google as the majority of the customers need training, push, motivation and a primer on why and how to use a product.
To solve this problem, traditional industries like BFSI, Telecom, Automobile, Real Estate etc. use 50M+ frontline sales executives to drive distribution. We believe that not just for these traditional industries but also for emerging companies in FinTech, EdTech etc these agents will play a pivotal role in accessing trust deficit customers.
They have grown to a Ā 100,000+ agent network across India (growing 50% MoM). One Code is funded by tier1 VCās and angels in India.
Ā
Role Overview
Summary of Role
As a part of the consumer products software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. You will be responsible for defining and developing software for tasks associated with the developing, designing and debugging of the software applications.
Ā
Responsibilities:
- Overlook development of all consumer products in JAVA
- Optimize components for maximum performance across a vast array of web-capable devices and browsers
- Focus on code maintainability and performance of application
- Provide technical advice and assists in solving programming problems
- Continuously create new and interactive features that would help to improve user experience and user engagement.
- Assist with troubleshooting of issues as needed
- Lead the design and architecture of software solutions
- Assist in developing and maintaining continuous integration pipelines
Ā
Required Skills for this Role:
- JAVA
- Spring/Spring Boot
- Hibernate
- Linux
- REST
- Kafka
- Mysql
- AWS
- ELK Stack (Elasticsearch)
- CI/CD Pipelines
- Team Leadership experience of at least 3 year
Ā
Qualifications:
- 2+ years of experience in Java based technologies
- Experience in designing databases and system architecture
- Experience in building products from scratch at well funded start-ups
Ā
Salary Range: Best in industry
Ā
Why join us?
- You will get to work with an experienced team who has worked in multiple startups.
- Experimenting is the name of the game. And POCs are the snacks that fuel them.
- Grow with us. It is a family
- Gain exposure to two of the fastest growing markets in the world - South East Asia and Social Commerce
Ā
- l IT experience delivering enterprise-scale applications or product implementations
- Ā experience working as a technical lead.
- Working Experience in ISO20022, SWIFT, Remittance
- Language & Frameworks: Java, Spring Boot, Spring, Any ORM
Note : This job is for immediate joining. Please apply ONLY IF you can join immediately.
Experience :- Junior role : 1 to 3 years/Senior : 5 to 7 Years
Industry: FinTech / BFSI
Functional Area: Core Platform Programming, Maintenance
Role Category: Programming & Design
Role: Software Developer
Employment Type: Permanent Job, Full Time
Overview:
We are looking to hire Java developers who are well versed with Spring Boot, Hibernate, and RDBMS such as MySQL.
As we continue to grow our apps and site, we are looking for somebody to join our Engineering team and help build out the next set of kick-ass features.
If selected, you get to be a part of a small but committed group of technologists who are trying to improve how events are ticketed and marketed in India.
About the role:
- 2+ years of experience on Java, Spring Boot, Hibernate in medium to large-scale projects
- Must have experience with at least some flavours of both SQL (MySQL, Postgres) and NoSQL (MongoDB, ElasticSearch, Redis, DynamoDB etc) datastores in production
- Must have experience with Kafka or similar message queue systems in production
- Stellar problem solving skills
- Hunger to learn new things and ability to grasp new concepts quickly
- Ability to move quickly without breaking things too much (we are dreamers)
- Ability to work under immense pressure which is balanced by a sense of responsibility and ownership
- Should be able to groom juniors and take them to the next level
Perks :
- You get to work at a fun filled atmosphere
- Have ample chances of learning leadership, mentor-ship skills
- A solid salary package along with chance to get ESOPsĀ
Salary Range : 6 LPA to 12 LPAĀ
(based on qualifications, experience and skills)









