
We are looking for an experienced Java Developer with strong proficiency in Kafka and MongoDB to join our dynamic team. The ideal candidate will have a solid background in designing and developing high-performance, scalable, and reliable applications in a microservices architecture. You will be responsible for building real-time data processing systems, integrating various services, and ensuring smooth data flow across systems.
Key Responsibilities:
- Design, develop, and maintain scalable Java applications with a focus on performance and reliability.
- Build and maintain Kafka-based real-time data pipelines for handling high-volume, low-latency data.
- Work with MongoDB to design and optimize database schemas and queries for high throughput and availability.
- Collaborate with cross-functional teams to define, design, and implement new features and improvements.
- Troubleshoot and resolve issues related to system performance, scalability, and reliability.
- Ensure software quality through best practices, including testing, code reviews, and continuous integration.
- Implement and maintain security best practices in both code and data handling.
- Participate in agile development cycles, including sprint planning, daily standups, and retrospectives.
Required Skills & Qualifications:
- 7+ years of experience in Java development, with a strong understanding of core Java concepts (J2EE, multithreading, etc.).
- Hands-on experience with Apache Kafka, including setting up brokers, producers, consumers, and understanding Kafka Streams.
- Proficient in working with MongoDB for designing efficient data models, indexing, and optimizing queries.
- Experience with microservices architecture and RESTful APIs.
- Familiarity with containerization technologies like Docker and orchestration tools like Kubernetes is a plus.
- Strong understanding of distributed systems, message-driven architectures, and event streaming.
- Familiarity with version control systems like Git.
- Excellent problem-solving skills, with the ability to debug and optimize code for high-performance systems.
- Experience with CI/CD pipelines and automated testing.

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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Job Description:
- Develop, and maintain Java applications using Core Java, Spring framework, JDBC, and threading concepts.
- Strong understanding of the Spring framework and its various modules.
- Experience with JDBC for database connectivity and manipulation
- Utilize database management systems to store and retrieve data efficiently.
- Proficiency in Core Java8 and thorough understanding of threading concepts and concurrent programming.
- Experience in in working with relational and nosql databases.
- Basic understanding of cloud platforms such as Azure and GCP and gain experience on DevOps practices is added advantage.
- Knowledge of containerization technologies (e.g., Docker, Kubernetes)
- Perform debugging and troubleshooting of applications using log analysis techniques.
- Understand multi-service flow and integration between components.
- Handle large-scale data processing tasks efficiently and effectively.
- Hands on experience using Spark is an added advantage.
- Good problem-solving and analytical abilities.
- Collaborate with cross-functional teams to identify and solve complex technical problems.
- Knowledge of Agile methodologies such as Scrum or Kanban
- Stay updated with the latest technologies and industry trends to improve development processes continuously and methodologies.
Mandatory Skills - 4 years in Nodejs, JavaScript, Express.js, MongoDB, Data Structures, Algorithms
"Expertise in Node.js Web frameworks like Meteor, Express, and Kraken.JS
Expertise in building highly scalable web services using Node.js, Create REST API with the help of Node middleware
Deep understanding of REST and API design
Experience designing APIs for consistency, simplicity, and extensibility.
Expertise with JavaScript testing frameworks like Jasmine, Quit, Mocha, Sinnon and Chai.
Expertise with building tools like Web pack, gulp, and grunt.
Integration of various application components
Experience in various phases of the Software Development Life Cycle (SDLC) such as requirements
analysis, design, and implementation in an agile environment, etc.
● Design and deliver scalable web services, APIs, and backend data modules.
Understand requirements and develop reusable code using design patterns &
component architecture and write unit test cases.
● Collaborate with product management and engineering teams to elicit &
understand their requirements & challenges and develop potential solutions
● Stay current with the latest tools, technology ideas, and methodologies; share
knowledge by clearly articulating results and ideas to key decision-makers.
Requirements
● 3-6 years of strong experience in developing highly scalable backend and
middle tier. BS/MS in Computer Science or equivalent from premier institutes
Strong in problem-solving, data structures, and algorithm design. Strong
experience in system architecture, Web services development, highly scalable
distributed applications.
● Good in large data systems such as Hadoop, Map Reduce, NoSQL Cassandra, etc.. Fluency in Java, Spring, Hibernate, J2EE, REST Services Ability to deliver code
quickly from given scenarios in a fast-paced start-up environment.
● Attention to detail. Strong communication and collaboration skills.
Key roles:
· Develop backend application with clean code practices foe the application
· Collaborate with frontend developers to integrate user-facing elements with server side logic
· Troubleshoot and debug application
· Gather and address technical and design requirements
· Build reusable code and libraries for future user-facing
· Communicate with other third-party team for collaborations
Skillset:
· Core Java - Hands on experience with Jdk 11 and above
· Experience with code hosting and collaboration tools like Bitbucket/Github/GitLab
· Microservice architecture - Rest API calls, inter-service exception handling
· Non-relational DB - MongoDB basic DB commands to insert, update, delete, find records and Indexing
· Springboot framework - Spring Data JPA, ORM
· Event driven architecture - Kafka
· Tools like Postman, Jenkins, Doppler, IDE, MongoDB atlas
Qualifications:
· UG: B.Tech/B.E. in Any Specialization, B.Sc in Any Specialization, BCA in Any Specialization
· PG: Any Postgraduate
Location - Pune/ Mumbai/ Bangalore
Education
Degree, Postgraduate in Computer Science or related field (or equivalent industry experience)
Experience
- Minimum 5 years of coding experience in NodeJS, JavaScript and Databases.
- At least 1 year hands-on in TypeScript .
- Hands-on experience in performance tuning, debugging, monitoring
Technical Skills
- Excellent knowledge developing scalable and highly-available Restful APIs using NodeJS technologies
- Practical experience with GraphQL.
- Experience in working with AWS platform and its core services like Lambda, Cloud Watch, Cloud Formation, CDK, SQS, S3 etc., or its equivalent Azure services
- Hands-on working experience in front-end applications development with HTML, CSS, Node JS with strong working experience in backend technologies Java, TypeScript and JavaScript programming languages.
- Understanding of containerization, experienced in Dockers , Kubernetes.
- Exposed to API gateway integrations like 3Scale.
- Understanding of Single-Sign-on or token-based authentication (Rest, JWT, oAuth)
- Experience on DevOps ways of working with good understanding on CI/CD and actively involved in solving, troubleshooting issues in distributed services ecosystem
- Hands on experience with both SQL and No-SQL databases.
- More than 3 years proven experience in developing high volume scalable cloud solutions utilizing platforms like Amazon AWS or Microsoft Azure.
- Possess expert knowledge of task/message queues include but not limited to: AWS, Microsoft Azure, Pushpin and Kafka
Functional Skills
- Experience in following best Coding, Security, Unit testing and Documentation standards and practices Experience in Banking, Financial and Fintech experience in an enterprise environment preferred
- Experience in Agile methodology.
- Ensure quality of technical and application architecture and design of systems across the organization.
- Effectively research and benchmark technology against other best in class technologies.
Soft Skills
- Able to influence multiple teams on technical considerations, increasing their productivity and effectiveness, by sharing deep knowledge and experience.
- Self-motivator and self-starter, Ability to own and drive things without supervision and works collaboratively with the teams across the organization.
- Have excellent soft skills and interpersonal skills to interact and present the ideas to Senior and Executive management
Areas of responsibilities:
Involvement in the full software development life cycle within broadly defined parameters and providing
software solutions keeping into consideration the software quality needs
Design and defining the interaction between the different component pieces
Write efficient code based on brief given by team lead.
Fast prototyping of proof-of concept features / application based on brief.
Develop and maintain new features on Java stack
Own the delivery of an entire piece of a system or application
Management and execution against project plans and delivery commitments
Work closely with the peers and Leads to develop the best technical design and approach for new product
development
Build software solutions for complex problems.
Compliance with build/release and configuration management process
Responsibility to develop unit test cases for his/her project module.
Execution of appropriate quality plans ,project plans ,test strategies and processes for development
activities in concern with business and project management effort
Desired Profile:
GoodunderstandingofObjectOrientedProgrammingConcepts,hands-onknowledgeonJavastack
(Spring/Hibernate)
Development across multiple browsers/platforms on Website
Good Understanding of SQL/NoSQL data stores
Fair Understanding of Responsive High Level Designs
Work experience in product/start-up company is a plus
Familiarity to MVC, SOA, RESTFull web services
Work with other teams and manage time across multiple projects and tasks in a deadline driven, team
environment
Good to have knowledge of Javascript (AngularJS/ReactJS)/HTML/CSS/JQuery front-end code across a
broad array of Interactive web
Understand agile methodology and instill best practices into the process.
Are you looking for a Senior Backend Engineer role in a high growth startup? Are you eager to learn and make a difference at work every day? If so, then read on.
At PlumQR, we work on revolutionizing the Food & Beverage industry with our cloud-based tech products. Millions of businesses across the world are switching for better, smarter & more hygienic products to reinvent their businesses. If you have what it takes to innovate & lead, we have just the right opportunity for you.
Requirements
- Minimum 3 years as a Senior Backend Engineer
- Strong software development experience in a SaaS product company
- Significant experience with NodeJS, React.js, React Native, MySQL, MongoDB, Java
- Cloud computing services (e.g. Google Cloud Platform)
- Strong problem-solving skills
- Ability to explain technical details to people inside the company
* Understanding of building architecture from product requirements.
* Experience of leading teams of developers to maximise performance.
* Knowledge of Multithreading, Thread Pooling, Background Jobs and Schedule Jobs with supporting tools and libraries.
* Working on Microservices based architecture using spring cloud, distributed application pattern and multiple data source management in the application.
* Working on Linux and Windows based OS and their command line tools.
* Working with unit testing frameworks.
* Object-Oriented development and Metaprogramming.
* Experience in working with the SQL Databases (MySQL or PostgreSQL) and No SQL. Databases (Cassandra or MongoDB).
* Knowledge of server configuration management and deployment techniques. Good to have experience in handling DevOps tools like Jenkins and containerization using Docker.
* Experience in working with different AWS cloud services.
Required Qualifications and Skills:
- 3-5 years of work experience in the development background, with at least 2 years experience in Java, Spring, Sprint Boot, Hibernate or JPA, MySQL, Oracle, Spring MVC.
- B.E. degree in Computer Science, Graduate in Software Engineering or equivalent
- Experience in Core JAVA, Spring, Spring Boot Frameworks.
- Experience with ORM's like Hibernate.
- Good knowledge of developing RESTful web services using Spring Boot, Java1.x,Servlet2.4, JSP2.0, JDBC3.0, Java Mail, Struts2.x, HTML, HTML5, Angular7+, JavaScript, JSF, Bootstrap2.x-3.x, JQuery & CSS 3.x, Maven 3.x, Apache Tomcat7
- Knowledge of Cloud AWS.
- Experience in any Messaging Queue e.g. Apache Kafka, ActiveMQ, etc.
- Experience on Web services with REST and SOAP.
- Experience working on tool set like Eclipse IDE, SQL clients.
- Experience using application server like Jboss, TomCat, Wildfly, glassfish.
- Experience in using tools like SOAP UI, POSTMAN
- Ability to write SQL queries to fetch data.
- Knowledge of Micro services, Redis Cache and Mongo DB (or any other NoSQL) is good to have
Strong experience in Core java technologies
Good experience in Restful Webservices
Good Experience in Database concepts.
Good Communication Skills & client/customer interaction experience.









