
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.
Connect with the team
Similar jobs
Product Development Using Java, Microservices, SpringBoot
Experience with RestFUL API's.
-Experience as a Technical / Enterprise Architect with strong knowledge of technologies / paradigms such as AI/ML, Micro-services, REST APIs, using MEAN /MERN & MongoDB
-Experience in defining and implementing and managing Cloud infrastructure
-Experience in setting up Architecture and technology vision and adoption of technology advancements into product delivery
-Should have worked with key technology partners in architecting various solutions
-Developing, Training, and mentoring in-house & outsourced Engineering teams
-Setting best practices across coding process
-Experience in establishing Enterprise technology standards and architecture review board for governance of Technology & Architectural changes and roadmap
-Define the complete technical infrastructure environment
-Maintain current knowledge of all relevant technology developments and seek opportunities to deploy new technologies that benefit the client
-Create architecture scope, definition, construction, and execution
-Provide technical leadership to project resources and the client to meet project deadlines and ensure that project objectives are met
-Provide technical leadership to project resources and the client to meet project deadlines and ensure that project objectives are met
-Ability to work with cross functional teams and articulate the technology vision and drive adoption across the Unit
Requirements:
-Experience in Fintech and B2C SaaS applications
-Proven experience as a Technical Architect or Project Manager
-Hands-on experience with software development and system administration
-Understanding of strategic IT solutions
-Experience in project management and service-oriented architecture (SOA)
-Knowledge of selected coding languages (PHP, Python)
-Familiarity with various operating systems (eg Windows, UNIX) and databases (eg MongoDB / MySQL)
-Ability to articulate technical solutions & ROI associated to multiple stakeholders such as Product engineering teams, business leaders, CXOs etc
-Organizational and leadership skills
-BSc/BA in Computer Science, Engineering or a related field
-Experience with Product-centric Organizations
SaaS (Mandatory)and Java, Spring boot, Azure is good go
Skills Required:
· Strong application development and design experience in highly Scalable enterprise JAVA/J2EE systems.
· Strong experience in complex application design, ability to provide solutions, design Concepts, design patterns.
· Strong understanding of Java best practices, system scalability, and performance tuning.
· Expertise in Spring (MVC, CORE, Boot, JDBC).
· Strong Knowledge of Restful services, XML, JSON are required.
· Having knowledge in Hadoop/Bigdata/ETL/Reporting systems is a plus.
2. Responsible for doing customer API integrations and other integrations required to onboard new e-commerce marketplaces, logistic providers, ERP and accounting systems. 3. Responsible to write code for API integrations, perform debugging tasks, do application tests, do configuration and code reviews to ensure the product is satisfactory.
The candidate would provide the firms SASS platform with ongoing technical support. This support includes responding to customer issues, providing updated software that solves bug issues, and working with the customer service team.
Roles and Responsibility:
∙ Develop functional and fast-responsive web applications, using markup languages. ∙ Maintain websites.
∙ Elaborate mobile-based and web-based features.
∙ Troubleshoot apps for bugs.
∙ Fix bugs if necessary and improve usability.
∙ Improve apps for maximum speed.
∙ Troubleshoot UI and improve its performance accordingly.
∙ Employ the latest technology in order to re-built legacy apps.
∙ Integrate UI elements with server-side ones.
∙ Detect and fulfill front-end and back-end requirements.
∙ Perform training and support activities.
∙ Develop reusable code.
∙ Write comprehensive manuals, guides, and documents.
∙ Compile prototype and quality mockups.
∙ Make sure that high-quality graphic standards are met.
(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.
- Understand the fundamentals of Software Engineering, such as Data Structures, Algorithms, Design Patterns
- Ability to write Java applications using Spring, Springboot or any other microservices frameworks
- Experience in the development of REST applications, in Java or Kotlin
- Capable of writing effective APIs
- Solid knowledge of JVM fundamentals such as classloading, memory management, garbage collection
- Demonstrated experience in platform API design and development
- Knowledge on microservice and event-driven architecture
- Experience in working with version control frameworks such as Git (preferable), SVN
- Experience with NoSQL databases (MongoDB or Cassandra) & Relational Databases
- Solid understanding of TDD & Agile principles such as CI / CD, with a proven track record of implementing solutions centred around those concepts
- Excellent communication, collaboration, reporting, analytical and problem solving skills
At Rizzle, we are building the World's #1 Short Videos Platform and are working towards building a team that is
deeply motivated to make that happen. Rizzle is a community for people to talk, react, perform, or create a new
show. Talk about life, relationships, ideas big and small, anything at all - Rizzle is the short video platform you've
been waiting for!
We're passionate about connecting people in interactive ways, the way life should be. We're obsessed about
building positive communities and providing people the right tools to keep interactions positive and are dual-
homed in San Francisco and Hyderabad (India).
Responsibilities:
• Work on an agile engineering team writing maintainable and scalable code for software components and
influencing team decisions.
• Collaborate with stakeholders to imagine, design, develop, test, and launch software.
• Capable of independently clarifying technical requirements, assessing development estimates and
applying a broad range of design approaches.
• Review code of other team members and provide constructive direction.
• Drive continuous improvement of software quality and maintainability of products/features.
• Continuous learning of technology trends, tools, and approaches, including sharing this knowledge with
your team.
• Mentor and lead developers by cultivating curiosity and deep technical understanding.
Requirements:
• Experience contributing to the architecture and design (architecture, design patterns, reliability and
scaling) of new and current systems
• A Bachelor's degree in Computer Science or equivalent combination of technical education and work
experience;
• 3 to 6 years of Software Development experience;
• Experience designing highly interactive web applications with performance, scalability, accessibility,
usability, design, and security in mind. If you don't have all of these, that's ok.
• Strong coding skills
• Solid software development background including design patterns, data structures, test driven
development.
• Experience with distributed systems, algorithms, and relational and no-sql databases.
• Familiar with building complex web applications.
• Software development experience in building highly scalable applications.
• Any previous experience in working with Node.js, Redis, FFMPEG, MongoDB, ElasticSearch, Cassandra,
Kafka or AWS is a plus.
Why choose Us?
• Enjoy a start-up culture where you learn and grow along with the organization. We know when to
work hard and play hard!
• We value your time-off, so we have an unlimited leavespolicy
• We also keep you covered in terms of a health insurance
• You wear what you are most comfortable in (Yes! You heard it right); lunch is on us (Everyday!) and
you also enjoy the liberty to choose your workinghours
Join us if you want to work with a flat and collaborative team and contribute to learnings of the team. We want to
learn from you too!
What you can expect in the interview process:
• Initial screening with HR
• Technical Interview I
• Technical Interview II
• HR Discussion








