
Greetings from Wissen Technology!
We are hiring Java Developers for Mumbai location.
Exp - 4 - 8 years
Location - Mumbai (Goregaon) - Hybrid
Notice Period - immediate or serving notice period only
Interview Process - Initial rounds virtual + Final round F2F
Software Engineer/Senior Software Engineer/Lead Engineer-Java
· Experience in Core Java 5.0 and above, Data Structures, OOPS, Multithreading, Algorithms, Collections, Unix/Linux
· Possess good architectural knowledge and be aware of enterprise application design patterns.
· Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
· Good development experience with RDBMS
· Good knowledge of multi-threading and high volume server side development
Basic working knowledge of Unix/Linux
· Excellent problem solving and coding skills in Java
· Strong interpersonal, communication and analytical skills.
· Should have the ability to express their design ideas and thoughts.
Job Brief-
· Understand product requirements and come up with solution approaches
· Build and enhance large scale domain centric applications
· Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines

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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Job Description
Role: Java Developer
Location: PAN India
Experience:4+ Years
Required Skills -
- 3+ years Java development experience
- Spring Boot framework expertise (MANDATORY)
- Microservices architecture design & implementation (MANDATORY)
- Hibernate/JPA for database operations (MANDATORY)
- RESTful API development (MANDATORY)
- Database design and optimization (MANDATORY)
- Container technologies (Docker/Kubernetes)
- Cloud platforms experience (AWS/Azure)
- CI/CD pipeline implementation
- Code review and quality assurance
- Problem-solving and debugging skills
- Agile/Scrum methodology
- Version control systems (Git)
Shift timings : Afternoon
Job Summary
We are seeking an experienced Senior Java Developer with strong expertise in legacy system migration, server management, and deployment. The candidate will be responsible for maintaining, enhancing, and migrating an existing Java/JSF (PrimeFaces), EJB, REST API, and SQL Server-based application to a modern Spring Boot architecture. The role involves ensuring smooth production deployments, troubleshooting server issues, and optimizing the existing infrastructure.
Key Responsibilities
● Maintain & Enhance the existing Java, JSF (PrimeFaces), EJB, REST API, andSQL Server application.
● Migrate the legacy system to Spring Boot while ensuring minimal downtime.
● Manage deployments using Ansible, GlassFish/Payara, and deployer.sh scripts.
● Optimize and troubleshoot server performance (Apache, Payara, GlassFish).
● Handle XML file generation, email integrations, and REST API maintenance.
● Database management (SQL Server) including query optimization and schema updates.
● Collaborate with teams to ensure smooth transitions during migration.
● Automate CI/CD pipelines using Maven, Ansible, and shell scripts.
● Document migration steps, deployment processes, and system architecture.
Required Skills & Qualifications
● 8+ years of hands-on experience with Java, JSF (PrimeFaces), EJB, and REST APIs.
● Strong expertise in Spring Boot (migration experience from legacy Java is a must).
● Experience with Payara/GlassFish server management and deployment.
● Proficient in Apache, Ansible, and shell scripting (deployer.sh).
● Solid knowledge of SQL Server (queries, stored procedures, optimization).
● Familiarity with XML processing, email integrations, and Maven builds.
● Experience in production deployments, server troubleshooting, and performance tuning.
● Ability to work independently and lead migration efforts.
Preferred Skills
● Knowledge of microservices architecture (helpful for modernization).
● Familiarity with cloud platforms (AWS/Azure) is a plus.
Job Summary:
As a Java Spring Boot Developer, you will play a key role in designing, developing, and maintaining robust backend services and APIs. With 2.5+ years of experience, including knowledge in Kotlin, you will work alongside a cross-functional team to build scalable and performant systems.
Key Responsibilities:
- Design, develop, and maintain efficient, reusable, and reliable Java and Kotlin code
- Build and consume RESTful APIs and microservices using Spring Boot
- Ensure the best possible performance, quality, and responsiveness of applications
- Collaborate with product managers, QA engineers, and DevOps for end-to-end delivery
- Troubleshoot and resolve performance bottlenecks, bugs, and technical issues
- Participate in code reviews, knowledge sharing, and continuous improvement
Required Skills & Qualifications:
- 2.5+ years of experience with Java and Spring Boot
- Strong understanding of RESTful APIs, MVC, and microservices architecture
- Experience with relational and NoSQL databases
- Proficiency with Git and Agile/Scrum methodologies
Preferred Skills:
- Familiarity with Docker, Kubernetes, and CI/CD tools
- Exposure to cloud platforms such as AWS or Azure
- Experience with unit testing and test automation frameworks
- Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience)
- Proven 2 to 12 years of professional experience in Node.js development
- Strong proficiency in JavaScript, including ES6+ syntax
- Expertise in designing and developing RESTful APIs and microservices architecture
- Experience with popular Node.js frameworks such as Express.js, Nest.js, or Hapi.js
- Experience in modern front-end technologies (e.g., HTML, CSS, JavaScript frameworks like React, Angular, or Vue.js)
- Solid understanding of asynchronous programming, event-driven architecture, and design patterns
- Extensive knowledge of database systems, both SQL and NoSQL (e.g., MongoDB, PostgreSQL, MySQL)
- Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform
- Familiarity with containerization technologies (e.g., Docker, Kubernetes)
We are a technology company, at a stage where we are moving fast ahead. We have been enabling enterprises to derive the value of Data Science and technology. At Lumiq, we are thinking every day about how to use the latest technology and concepts to build products which can help our customers and enterprises in all aspects of their businesses.
We create Data oriented enterprise applications. The applications must be scalable and robust. This position creates the exact kind of enterprise applications which are easy to configure and manage from the end-user perspective. The integration with all the different services and APIs plays an important part in the whole architecture.
Eligibility
Experience and Qualification
- 2-5 Years of experience with Drools/Kofax Workflow.
- Java Microservices: 2-3 years Spring Boot, Spring Integration or Batch.
- Working knowledge of Databases
- Design and develop high-volume, low-latency applications for critical systems, delivering high-availability and performance.
- Write well designed testable, efficient code, and ensure that the designs comply with specifications.
- Bachelor's Degree in Computer Science or equivalent
Must Have Skills
- Java
- Drools
- Any Relational Database
- GIT
Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment and maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen doctor-patient relationship and enhance the in-clinic experience.
As the Java Programmer, you will be responsible for developing cutting edge health-tech applications that include high scale transaction processing, intelligent bot based programs and data analytics.
What you will do:
- Building components for the company's advanced health tech platform using Java, Solr, SpringBoot, DialogFlow
- Communicating effectively in a cross-functional product development team and present ideas and solutions effectively
- Participating in technical planning and requirements gathering phases including design, code, test, troubleshoot, and document engineering software applications
- Developing the Code as per the requirements
- Working with product team and constructing the tech roadmap
- Designing, building and scaling the company's backend microservices
- Maintaining code integrity and organization
- Applying all quality requirements to make the code production ready
- Developing and deploying new features to facilitate related procedures and tools if necessary
- Developing documentation related to technical aspects and to facilitate current support, development, upgrades, or migrations
- Designing and building efficient, reusable, and reliable Java code
- Pro actively catching and fixing bugs, and providing support for the back end services
- Managing servers and infrastructure by keeping the lights on and refining the deployment architecture
What you need to have:
- Expert at hands on programming in JAVA and J2EE
- Must be from Product based companies (Should have developed Web Apps)
- Proven expertise in Java interfaces with MongoDB (or similar noSQL databases) as well as relational databases (mySQL, Postgres etc)
- Key contributor in atleast one 6+ months development project involving SpringBoot and Hibernate
- Strong understanding of application server infrastructure
- Good working knowledge of Maven based build systems
- Good understanding of build and deployment pipelines that involve ANT and Jenkins
- Proficient understanding of code versioning tools, such as Git or SVN
- Good knowledge of working on Rest APIs, Webservices
- Excellent problem-solving skills
- Hands on experience with Lucene/Solr
- Familiarity with DiagFlow based chat bot building
- Knowledge of NLP
- Learnt AI/ML systems
- Excellent interpersonal skills and the ability to build good working relationships.
- Must be self-motivated to prioritize and manage workload and meet critical project milestones and deadlines.
- Able to effectively collaborate with a team as well as take initiative and work independently to solve problems

About the Company
Based in California’s Silicon Valley, WebShar is focused on enabling innovative teams to bring their ideas to life. WebShar provides software development consulting services to innovative companies around the world. Through years of cutting edge technical expertise, the WebShar team utilizes their extensive knowledge of modern software development methodologies to help companies create innovative software solutions.
About the Job Role
Skills
Primary
- Java, J2EE, Spring MVC
- Hibernate or other ORM
- Web technology and security, REST framework
- Any one UI technology and ready to learn a new one.
- Database knowledge (MySQL, Oracle, Postgres)
- Unit testing frameworks
- Version Control (Eg., Git)
Good To Have
- Microservices architecture implementation using docker and kubernetes
- Web technologies like HTML, CSS and Javascript
- Python, Shell Scripting
Key Responsibilities
- Identify and analyze user requirements
- Prioritize, assign and execute tasks throughout the software development life cycle
- Document development phases
- Design database architecture
- Develop Java EE applications
- Write well-designed, efficient code
- Review, test and debug team members’ code
- Schedule product releases with internal teams
- Ensure our applications are secure and up-to-date
- Stay up-to-date on emerging technologies
Requirements
- 6 to 8 years of work experience as a Senior Java Developer or similar role
- Experience designing, building and testing Java EE applications
- In-depth knowledge of popular Java frameworks like Spring MVC
- Experience with Object-Oriented Design (OOD)
- Good delegation and time management skills
- Problem-solving abilities
- BSc in Computer Science, Engineering or relevant field
Qualification & Experience:
- Bachelor of Engineering, preferably in Computer Science/or related fields or Masters, from a premier college
- 2 to 6 years overall software development experience
- Proven hands-on Software Development experience
- Ability to work with an agile mindset
- Having a polyglot mindset to think beyond one programming language/framework to choose the right tech stack for the right problem and exhibit learnability to pick up new technologies
- Proven working experience in Java development/Python development with reasonable exposure to Python/Java respectively or willingness to learn Python/Java
- Hands on experience in designing and developing applications using Java EE platforms/Python Frameworks
- Object Oriented analysis and design using common design patterns
- Good Understanding of Data Structures & Algorithms
- Hands on multi-threading
- Experience in the Relational Databases, SQL and ORM technologies (e.g. JDBC, JPA2, Hibernate, Django ORM)
- Experience with test-driven development









