
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
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We are looking forward to hiring a committed
Java Developer with experience in building high-performing, scalable, enterprise-grade applications. You will be part of our Engineering team that works on mission-critical applications. You will be managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Location = Pune
You are required to:
Contributing in all phases of the development lifecycle.
Write well designed, testable & efficient code.
Ensure designs comply with specifications.
Prepare and produce releases of software components.
Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
Our Current Stack
Backend: Spring (JAVA), Laravel (PHP), MySQL, NoSQL, NGINX Plus.
Frontend: Angular 5+ Ngrx/store 5
Infrastructure: Google cloud platform (App engine, CloudSQL, BigQuery, PubSub, Firebase Hosting), Scrapy Cloud, Pusher.io (websockets), Getstream.io, Filestack, Postmark app, AS2 Gateway, Google Cloud Endpoints Framework, MongoDB, Algolia, Memcache
Tools: Gitlab, Postman app, JIRA.
Technical Skills required
JAVA, SPRING OR SPRING BOOT, DATA STRUCTURES & ALGORITHMS, HIBERNATE, MYSQL, MONGODB and NOSQL
What Makes You Eligible?
LOOKING FOR CANDIDATES FROM PUNE LOCATION ONLY.
B. Tech degree ONLY ( FIRST CLASS GRADE IN FINAL YEAR 60 % OR ABOVE ONLY).
Experience in the same role of almost 1-2 years.
Experience with connecting backend and frontend services.
Exposure to consuming data through different interfaces (Web API's/Socket/ REST/ RESTFUL/ JSON/ XML).
Proficiency in Data Structures and Algorithms.
Understanding of web markup, including HTML 5 CSS.
Understanding of client-side scripting and JavaScript frameworks.
Ability to write clean, reusable and well documented code.
Proficient understanding of code versioning tools, such as Git.
Knowledge of API authentication techniques (Token, JWT, OAuth2) - desirable but not mandatory. (Experience with API Design will be a plus)
Fair spoken and written English Flexibility - Things change around here. FAST!
Other Inter-personal skills like self-motivation, persistency, patience and eagerness to learn and work independently.
- Understand the requirement and convert that into API design.
- Write the code independently
- Unit testing and bug fixing
- Write code with standards and conventions and follow best practices.
- Know how to engineer a full-fledged system and not just write code to make things work.
- Knowledge of agile methodologies, scrum.
- Should be able to guide juniors.
- Communication with clients for requirement understanding.
- Code Merging and deployment
Required Skills:
- REST APIs in Spring Boot and Spring Framework
- MySQL Database, complex SQL queries (like joining multiple tables)
- Spring Security, JWT Tokens
- Third party Integration
- Unix basic commands
- Apache Tomcat, Deployment of War in Unix environment.
- Jira or any other Issue/Task tracking systems.
Qualification:
BE \ B.Tech \ MCA |
Requirement:
1. Node Js min 2 yrs exp.
2. Database - MONGO, SQL, etc. min 2yrs experience with these.
3. Caching - REDIS, MEMCACHED etc
4. Message Queues - RABBIT MQ, Kafka, etc.
Location: Delhi (Work from office).
Package : Upto 12 LPA
Backend Architect:
Technology: node js, DynamoDB / Mongo DB
Roles:
- Design & implement Backend Services.
- Able to redesign the architecture.
- Designing & implementation of application in MVC & Microservice.
- 9+ years of experience developing service-based applications using Node.js.
- Expert-level skills in developing web applications using JavaScript, CSS and HTML5.
- Experience working on teams that practice BDD (Business Driven Development).
- Understanding of micro-service architecture and RESTful API integration patterns.
- Experience using Node.js for automation and leveraging NPM for package management
- Solid Object Oriented design experience, and creating and leveraging design patterns.
- Experience working in a DevOps/Continuous Delivery environment and associated toolsets (i.e. Jenkins, Puppet etc.)
Desired/Preferred Qualifications :
- Bachelor's degree or equivalent experience
- Strong problem solving and conceptual thinking abilities
- Desire to work in a collaborative, fast-paced, start-up like environment
- Experience leveraging node.js frameworks such as Express.
- Experience with distributed source control management, i.e. Git
Java Developers
Exp: 3-5 years
Joining: 15-30 days
Skillset: Java, Microservices, Spring, Springboot, Hibernate
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.
system performance.
Experience with JSP & Servlet.
Experience with open source frameworks/libraries like Spring, Hibernate, Struts, JUnit etc.
Experience with MVC frameworks like Spring MVC, Struts, JSF etc.
Experience with XML and webservices (SOAP/REST).
Experience with application Servers like Web logic, WebSphere and Jboss.
Experience with JavaScript, Jquery, AJAX, CSS, HTML.
Knowledge of Messaging (JMS,MDB etc.) is a plus.
Knowledge of build tools like Maven and ANT is a plus.
Good understanding of object oriented methodologies and design principles.
Knowledge of the PTC/Servigistics/Click Commerce/Xelus “Service Depot
Management/SL/Repairs and Returns/XDR” application is a plus.
Experience working with large amounts of data.
Able to work with and participate within a small multicultural professional team.
Understanding of performance profiling / tuning.
Familiar with Agile methodologies/tools.
Experience with SQL.
Experience in analysis, design, coding, and implementation of enterprise Java web
applications.
General understanding of scalability and high-availability systems.
Excellent communication/documentation skills
Ability to work effectively under pressure with constantly changing priorities and deadlines
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
Work on the development backend systems for our first product
Build reliable, secure and performant backend systems
Drive test coverage and continuous delivery automation within the team
Requirements
3-5 years of software development experience
Strong computer science fundamentals
Good knowledge of Java ecosystem
Can write code that is readable, maintainable and performant
Good understanding of relational databases, transactions, entity-relationship modeling
Comfortable writing multi-threaded programs
Desired Skills and Experience
Java,J2EE,Spring,Struts



