
Job Title: Java Developer
Location: Mumbai
Job Type: Full-Time
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 Java and Java EE (Enterprise Edition).
- Strong understanding of Object-Oriented Programming (OOP) concepts.
- Experience with Spring Framework (Spring Boot, Spring MVC) and Hibernate.
- Familiarity with RESTful API design and development.
- Knowledge of SQL and database management systems like MySQL, PostgreSQL, or Oracle.
- Experience with version control systems like Git.
- Familiarity with build tools like Maven or Gradle.
- Solid understanding of application security, data protection, and performance optimization.

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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We are seeking a highly skilled and experienced Senior Java Developer with 5+ years of hands-on experience in Java-based application development. The ideal candidate should be adept at designing scalable systems, optimizing performance, and leading development efforts in collaboration with cross-functional teams. This is a full-time, on-site position for candidates currently residing in Mumbai and available to join within 15 days.
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- Lead end-to-end design, development, and deployment of Java applications
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- Implement microservices architecture and containerized deployments
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- Collaborate with DevOps for CI/CD and production deployments
- Guide junior developers and conduct knowledge-sharing sessions
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- Languages & Frameworks:
- Core Java, J2EE
- Spring Framework (Spring Boot, Spring MVC, Spring Security)
- Hibernate / JPA
- Apache Maven / Gradle
- API Development & Integration:
- RESTful APIs, JSON, Swagger/OpenAPI
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- JUnit, Mockito
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We are looking for Advance Java developers who want to help us design cutting edge scalable products to meet our rapidly growing business. We are building out a team and looking for multiple levels but you should have at least 6+ years of programming experience.
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Software Development Engineer (III) @ REBEL FOODS
We are surrounded by the world's leading consumer companies led by technology - Amazon for retail, Airbnb for hospitality, Uber for mobility, Netflix and Spotify for entertainment, etc. Food & Beverage is the only consumer sector where large players are still traditional restaurant companies. At Rebel Foods, we are challenging this status quo as we are building the world's most valuable restaurant company on the internet, superfast. The opportunity for us is immense due to the exponential growth in the food delivery business worldwide which has helped us build 'The World's Largest Internet Restaurant Company' in the last few years. Rebel Foods current presence in 7 countries (India, Indonesia, UAE, UK, Malaysia, Singapore, Bangladesh) with 15 + brands and 3500+ internet restaurants has been built on a simple system - The Rebel Operating Model. While for us it is still Day 1, we know we are in the middle of a revolution towards creating never seen before customer-first experiences. We bring you a once-in-a-lifetime opportunity to disrupt the 500-year-old industry with technology at its core.
We urge you to refer to the below to understand how we are changing the restaurant industry before applying at Rebel Foods.
https://jaydeep-barman.medium.com/why-is-rebel-foods-hiring-super-talented-engineers-b88586223ebe">Link
https://jaydeep-barman.medium.com/how-to-build-1000-restaurants-in-24-months-the-rebel-method-cb5b0cea4dc8">Link 1
https://medium.com/faasos-story/winning-the-last-frontier-for-consumer-internet-5f2a659c43db">Link 2
https://medium.com/faasos-story/a-unique-take-on-food-tech-dcef8c51ba41">Link 3
An opportunity to revolutionize the restaurant industry
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- Willing to challenge the status quo and innovate
- Obsessed with quality, performance and frugality
- Willing to take complete responsibility and ownership of results
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We believe in empowering and growing people to perform the best at their job functions. We follow outcome-oriented, fail-fast iterative & collaborative culture to move fast in building tech solutions. Rebel is not a usual workplace. The following slides will give you a sense of our culture, how Rebel conducts itself and who will be the best fit for our company. We suggest you go through it before making up your mind.
https://www.slideshare.net/">Link 4
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We are looking for a Java/Full stack Developer with experience in building high-performing, scalable, enterprise-grade applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Java developer responsibilities include designing, developing and delivering high-volume, low-latency applications for mission-critical systems.
Experience : 2+ years
Location : Work from Home (full time)
Notice Period : 0 to 30 days ( Immediate joiners are preferred)
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(This role encompassing both API engineering using Java stack and web development. Experience in designing, developing, testing and successfully deploying critical and complex projects.)
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Contribute in all phases of the development lifecycle
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Write well designed, testable, efficient code
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Ensure designs are in compliance with specifications
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Prepare and produce releases of software components
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Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
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Build reusable code and libraries for future use
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Java background with a minimum of 2 years experience in Java technologies.
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Experience in designing and developing application backend using frameworks like Spring Boot, Spring MVC, Jersey, JPA, Hibernate, SQL, Linux, JSON, XML, OAuth etc.
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Add on : Experience with frontend technologies like CSS,HTML,Javascript, NodeJS/Express, Angular, React, ExtJS, Vue is preferred
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Experience with both SQL and NoSQL database systems and writing SQL queries
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Strong experience building, designing, and consuming Restful web services.
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Exposure of Cloud Infrastructure - AWS and Alibaba Cloud
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Excellent understanding of ORM and Database concepts
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Experience with developing unit test code using JUNIT, Power Mock/EasyMock/Mockito etc.
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Experience with Git, Maven and CI/CD pipelines to deploy on Cloud applications
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Experience & knowledge on Micro services Architecture and API development using Java, spring, Spring Boot
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Experienced in roles conducting requirements gathering, writing user stories, creating application design and using design patterns
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Good knowledge on credentials/secrets management and data encryption techniques
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Good knowledge on coding standards, design patterns, unit testing.
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Good hands - on BitBucket/Github is preferred.
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- Solid experience in Golang is a must.
- Solid understanding of Apache Products.
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Good analytical and coding skill.
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- 2+ years of experience in Technology background and start-up environment.
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- Basic understanding of front-end technologies, such as HTML5, JQuery and CSS3
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- Excellent judgment/decision making, conflict resolution, leadership and motivational skills.
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