
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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We are looking for a Python Backend Developer to design, build, and maintain scalable backend services and APIs. The role involves working with modern Python frameworks, databases (SQL and NoSQL), and building well-tested, production-grade systems.
You will collaborate closely with frontend developers, AI/ML engineers, and system architects to deliver reliable and high-performance backend solutions.
Key Responsibilities
- Design, develop, and maintain backend services using Python
- Build and maintain RESTful APIs using FastAPI
- Design efficient data models and queries using MongoDB and SQL databases (PostgreSQL/MySQL)
- Ensure high performance, security, and scalability of backend systems
- Write unit tests, integration tests, and API tests to ensure code reliability
- Debug, troubleshoot, and resolve production issues
- Follow clean code practices, documentation, and version control workflows
- Participate in code reviews and contribute to technical discussions
- Work closely with cross-functional teams to translate requirements into technical solutions
Required Skills & Qualifications
Technical Skills
- Strong proficiency in Python
- Hands-on experience with FastAPI
- Experience with MongoDB (schema design, indexing, aggregation)
- Solid understanding of SQL databases and relational data modelling
- Experience writing and maintaining automated tests
- Unit testing (e.g., pytest)
- API testing
- Understanding of REST API design principles
- Familiarity with Git and collaborative development workflows
Good to Have
- Experience with async programming in Python (async/await)
- Knowledge of ORMs/ODMs (SQLAlchemy, Tortoise, Motor, etc.)
- Basic understanding of authentication & authorisation (JWT, OAuth)
- Exposure to Docker / containerised environments
- Experience working in Agile/Scrum teams
What We Value
- Strong problem-solving and debugging skills
- Attention to detail and commitment to quality
- Ability to write testable, maintainable, and well-documented code
- Ownership mindset and willingness to learn
- Teamwork
What We Offer
- Opportunity to work on real-world, production systems
- Technically challenging problems and ownership of components
- Collaborative engineering culture
according to our company’s needs. You will be responsible for planning, developing,
testing, improving and maintaining new and existing databases to help users retrieve
data effectively. As part of our IT team, you will work closely with developers to ensure
system consistency. You will also collaborate with administrators and clients to
provide technical support and identify new requirements. Communication and
organization skills are keys for this position, along with a problem-solution attitude.
You get to work with some of the best minds in the industry at a place where
opportunity lurks everywhere and in everything.
Your responsibilities are as follows.
• Working cross functional teams to develop robust solutions aligned with the
business needs
• Maintaining communication, providing regular updates to the development
team ensuring solutions provided are fit for purpose
• Training other developers in the team on best practices and technologies
• Troubleshooting issues in the production environment understanding the root
cause and developing robust solutions
• Developing, implement, maintain and solutions that are both reliable and
scalable
• Capture data analysis requirements effectively and represent them formerly
and visually through our data models.
• Maintaining effective database performance by identifying and resolving
production and application development problems
• Optimise the integration and installation of new releases
• Monitoring system performance, test, troubleshoot and integrating new
features
• Proactively recommending solutions to improve new and existing database
systems
• Providing database support by coding utilities, resolving user questions and
problems
• Ensuring compliance to database implementation procedures
• Performing code and design reviews as per the code review process
• Installing and organising information systems to guarantee company
functionality
• Preparing accurate documentation and reports
• Migration of data from legacy systems to new solutions
• Stakeholders’ analysis of our current clients, company operations and
applications, and programming requirements
• Collaborate with functional teams across the business to deliver end-to-end
products, features enabling enhanced performance
Required Qualifications:
We are looking for individuals who are curious, excited about learning, and navigating
through the uncertainties and complexities that are associated with a growing
company. Some qualifications that we think would help you thrive in this role are:
• Minimum 8 Years of experience as a Database Administrator
• Strong knowledge of data structures and database systems
• In depth expertise and hands on experience with MySQL/MariaDB Database
Management System
• In depth expertise and hands on experience in database design, data
maintenance, database security, data analysis and mining
• Hands-on experience with at least one web-hosting platform such as Microsoft
Azure, AWS (Amazon Web Services) etc.
• Strong understanding of security principles and how they apply to web
applications
• Basic knowledge of networking, Desirable knowledge of business intelligence
• Desirable knowledge of data architectures related to data warehouse
implementations
• Strong interpersonal skills and a desire to work collaboratively to achieve
objectives
• Understanding of Agile methodologies
• Bachelor/Masters of CS/IT Engineering, BCA/MCA, B Sc/M Sc in CS/IT
Preferred Qualifications
• Sense of ownership and pride in your performance and its impact on company’s
success
• Critical thinker, Team player
• Excellent trouble-shooting and problem-solving skills
• Excellent analytical and Strong organisational skills
• Good time-management skills
• Great interpersonal and communication skills
Job Description:
We are looking for a skilled and enthusiastic Java Developer to join our development team. The ideal candidate should have solid experience in Java and should also be familiar with Kotlin for backend development. You’ll be responsible for designing, developing, and maintaining high-performance, scalable applications.
Key Responsibilities:
- Design, develop, and maintain efficient, reusable, and reliable Java code.
- Work on Kotlin-based backend applications as per project requirements.
- Develop RESTful APIs and backend services.
- Ensure the best possible performance, quality, and responsiveness of applications.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Identify bottlenecks and bugs, and devise solutions to these problems.
- Participate in code reviews and contribute to team knowledge sharing.
Job Description:
1) Good experience in Java
2) Hands-on experience in Spring boot
3) Hands-on experience in Microservices
Key Responsibilities:
- Rewrite existing APIs in NodeJS.
- Remodel the APIs into Micro services-based architecture.
- Implement a caching layer wherever possible.
- Optimize the API for high performance and scalability.
- Write unit tests for API Testing.
- Automate the code testing and deployment process.
Skills Required:
- At least 2 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
- Excellent hands-on experience using MySQL or any other SQL Database.
- Good knowledge of MongoDB or any other NoSQL Database.
- Good knowledge of Redis, its data types, and their use cases.
- Experience with graph-based databases like GraphQL and Neo4j.
- Experience developing and deploying REST APIs.
- Good knowledge of Unit Testing and available Test Frameworks.
- Good understanding of advanced JS libraries and frameworks.
- Experience with Web sockets, Service Workers, and Web Push Notifications.
- Familiar with NodeJS profiling tools.
- Proficient understanding of code versioning tools such as Git.
- Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
- Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
- Experience building a large scale social or location-based app.
-
Preferred Education & Experience:
-
Bachelor’s or master’s degree in Computer Engineering, Computer Science, Computer Applications, Mathematics, Statistics or related technical field or equivalent practical experience. Relevant experience of at least 3 years in lieu of above if from a different stream of education.
-
Well-versed in and 5+ years of hands-on demonstrable experience with:
▪ Object Oriented Modeling, Design, & Programming
▪ Microservices Architecture, API Design, & Implementation
▪ Relational, Document, & Graph Data Modeling, Design, & Implementation -
Well-versed in and hands-on demonstrable experience with:
▪ Stream & Batch Big Data Pipeline Processing
▪ Distributed Cloud Native Computing
▪ Serverless Computing & Cloud Functions -
5+ years of hands-on development experience in Java programming.
-
3+ years of hands-on development experience in one or more libraries & frameworks such as Spring Boot, Apache Camel, Akka, etc.;
extra points if you can demonstrate your knowledge with working examples.
2+ years of hands-on development experience in one or more Relational and NoSQL datastores such as Amazon S3, Amazon DocumentDB, Amazon Elasticsearch Service, Amazon Aurora, AWS DynamoDB, Amazon Athena, etc. -
2+ years of hands-on development experience in one or more technologies such as Amazon Simple Queue Service, Amazon Kinesis, Apache Kafka, AWS Lambda, AWS Batch, AWS Glue, AWS Step Functions, Amazon API Gateway, etc.
-
2+ years of hands-on development experience in one or more technologies such as AWS Developer Tools, AWS Management & Governance, AWS Networking and Content Delivery, AWS Security, Identity, and Compliance, etc.
-
Well-versed in Virtualization & Containerization; must demonstrate experience in technologies such as Kubernetes, Istio, Docker, OpenShift, Anthos, Oracle VirtualBox, Vagrant, etc.
-
Well-versed with demonstrable working experience with API Management, API Gateway, Service Mesh, Identity & Access Management, Data Protection & Encryption.
-
Hands-on experience with demonstrable working experience with DevOps tools and platforms viz., Jira, GIT, Jenkins, Code Quality & Security Plugins, Maven, Artifactory, Terraform, Ansible/Chef/Puppet, Spinnaker, etc.
-
Well-versed with Storage, Networks and Storage Networking basics which will enable you to work in a Cloud environment.
-
Experience : 5+Years
-
Job Location : Remote/Pune
Role Description :
- Good Understanding of Java 8 with proven hands-on skills
- Experience in Spring Framework - Spring Boot, Spring Data, Spring REST
- Experience in Spring Reactive
- Experience in Git, Gradle / Maven
- Practitioner of clean code and SOLID principles
- Able to test drive features
- Can debug code at ease and ensure quality code is produced
- Knowledge of design patterns
- Comfortable with agile practices, user stories and task breakdown
- Understands REST principles and Micro services
- Experienced with technologies such as
- Required Java, Spring Boot
- Good to have Maven, GIT, Swagger, PCF, Rabbit MQ
- Good API skills technology such as Rest Webservice
- Good foundation in data structures, algorithms and OO Design with rock solid programming skills
- Experienced on creating unit test using JUnit, Mockito or PowerMock
- Experienced on mark up language such as JSON and YML
- Experienced on using Quality and Security scan tools such as Sonar, Fortify and WebInspect
- Experienced on agile methodology
Counter (https://counter.app/) a young, ambitious investor-funded technology startup bringing innovative new ideas to age-old problems within the hospitality sector. Our product connects and creates a global community of makers in the hospitality space while offering an efficient, simple solution for all their property management needs. Our team has a collective experience of over 25 years in this sector and are determined to use this knowledge to create a product that we would love to use. We currently operate out of Berlin, Germany and Goa, India (yes, you read that right). You will be working alongside a dynamic, creative, analytical & collaborative team that is passionate about meaningful work and always treat each other with kindness and respect.
Job Description
We are looking for a NodeJS developer interested in building a web application. You will be responsible for architecting and building this application, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, we are looking for a strong team player who can find the balance between perfectionism and speed.
We are currently building most of our product using the MERN stack but fundamentally believe that any technology is merely a tool to serve a greater purpose of making our customers lives amazing.
Responsibilities
-
Build smooth and functional API endpoints in line with our product roadmap
-
Work on 3rd party integrations to strengthen the product functionality
-
Diagnose and fix bugs and performance bottlenecks.
-
Work with CI/CD and write automated tests to ensure the product is of the highest
quality
Skills
-
Strong written and verbal communication skills enabling a remote work culture within the organization
-
Knowledge of programming in NodeJS is a fundamental requirement. It would be really helpful if you could showcase a past project.
-
Experience with MongoDB/NoSQL databases is desirable
-
Proficiency with git is critical. Familiarity with Jira and Confluence is a plus
-
Comfortable working with third-party dependencies and debugging dependency
conflicts Deep understanding of efficient REST APIs
-
Experience with automated testing suites (jest, enzyme) would be desirable
-
Self-driven, an ability to learn fast, efficiently troubleshoot and independently deliver
results without constant supervision
Our product is currently live with active customers across the globe. Happy to assist with any queries and questions about the role










