
Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency clientfacing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.
Please find the attached study material.
Data structure and Algorithms-
1. Basic Strings, Array and Mathematical based problems.
2. Sliding window problems
3. Problems solved using HashMap, Set and Stack.

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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Core Responsibilities:
- Design, develop, and maintain backend services and APIs using Python or Golang.
- Write high-quality, testable, and maintainable code with a focus on performance and scalability.
- Implement automated tests and contribute to CI/CD pipelines.
- Collaborate with product, QA, and DevOps teams for end-to-end feature delivery.
- Troubleshoot production issues and provide timely resolutions.
- Participate in design and architecture discussions to improve system efficiency.
- Contribute to improving development processes, coding standards, and best practices.
Experience and Expertise:
- 1-2 years of experience in backend development with Python or Golang.
- Solid understanding of RESTful APIs, microservices, and distributed systems.
- Strong knowledge of data structures, algorithms, and OOPS principles.
- Hands-on experience with relational and/or NoSQL databases.
- Familiarity with Linux development, Docker, and basic cloud concepts (AWS/GCP/Azure).
- Proficiency with Git and version control workflows.
- Familiarity with AI-powered development tools or exposure to projects involving large language models (LLMs) is a plus.
Skills:
- Strong analytical and debugging skills with the ability to solve complex problems.
- Good communication and collaboration skills across teams.
- Ability to work independently with minimal supervision while being a strong team player.
- Growth mindset – eagerness to learn new technologies and improve continuously.
- Experience with one of the major relational databases (MySQL, Oracle, Postgres) and NoSQL databases (Mongo DB, Cassandra, Dynamo DB or such)
- Expert object-oriented programming experience using Java
- Experience with Frontend technologies (React.js, Angular, JavaScript or Ruby-on-Rails)
- Experience in messaging protocol like MQTT and messaging middleware like ActiveMQ, RabbitMQ and/or Kafka
- Require experience and Strong understanding of entire Software Development Life Cycle (SDLC), Agile (Scrum), Software design/architecture process, CI/CD processes, unit testing & Test-Driven Development (TDD)
- Experience with web services (consuming or creating) with REST, MQTT, Web Sockets
- Experience with containerized environment Dockers, Rocket and Container orchestrator such as Kubernetes, Docker Swam, etc
- Experience managing Cloud infrastructure (resources and service) in AWS, Azure and/or GCP
- Strong knowledge of SOA, object-oriented programming, design patterns, multi-threaded application development
- Experience in reporting and analytics, queuing and real-time streaming systems
- Experience developing, maintaining, and innovating large scale, consumer facing web or mobile applications
- Git or similar distributed SCM tools experience
- Experience with open-source technologies (if no practical work experience w/ Big Data, or cutting-edge frontend technology, prototyping and/or researching the up and coming technology and solutions)
- Expertise in software design and development.
- Proficiency with at least one Object Oriented language(e. g. Java)
- Experience with building high-performance, highly available and scalable distributed systems
- Experience with API Design, ability to architect and implement an intuitive customer and third-party integration story.
- Developing and installing software solutions.
- Designing, implementing and delivering high-quality Software projects in JAVA, SQL / Oracle, J2EE and other JAVA technologies.
- Participate in detailed level in design, coding, code walk-through, peer code reviews and unit testing, System Testing, UAT, Demos, POCs, installation, maintenance of Software modules.
- Software prototype.
- System Architecture.
- Software Design Document.
- User interfaces to be developed as per UX guidelines Code files ensuring coding guidelines followed.
- Code review artifacts during peer code review.
- Test plan and Test Cases.
- Installation/Deployment document Release Document.
- Technical Documentation
1 Bachelor’s / Masters’ degree from a reputed university
2 Technical certifications in Java is a good to have. Other programming certifications and
experience e.g., Python or C# is a plus.
3 Years of experience: 4-7 years for Senior Developer and 0-3 years for Developer
Technical Competencies
1 Hands on experience in writing software applications, in particular server side and backend
applications. Web development expertise is a plus.
2 Software development expertise
• Server technologies – Java based application development. Familiarity with various
Java based development frameworks. Spring development experience is a plus.
• Database technologies - Knowledge and familiarity with SQL. Experience with MySQL
as well as NoSQL databases such as MongoDB is a plus.
• Cloud technologies – Experience in building applications on cloud platforms,
especially on MS Azure, including familiarity with Cloud APIs, is a plus.
• Web technologies – Experience building web applications with JavaScript, CSS,
HTML, and expertise with frameworks such as Angular, Express, Node and others
3 Experience in agile software development and development in sprints
●Work closely with Principal Engineers to design, implement and deploy applications that impact
Rupeek’s business with an emphasis on Mobile, Payments, Core Platform and Analytics.
●Drive the architecture and design of large-scale, multi-tiered, distributed software applications, tools,
systems and services using object-oriented design, distributed programming, Java and C/C++.
●Gather business and functional requirements from external and/or internal customers and end-users,
and translate requirements into technical specifications to build robust, scalable, supportable solutions
that work well between a range of complex systems.
●Serve as technical lead throughout the full development lifecycle, end-to-end, from scoping, planning,
conception, design, implementation and testing, to documentation, delivery and maintenance.
●Provide design reviews for other engineers, including feedback on architecture and design issues, as
well as integration, performance and scalability.
●Manage engineers on multiple technical projects and ensure schedules, milestones, and priorities are
compatible with technology and business goals.
- 3+ to 6 years of hands-on coding experience in Java preferably Version 8
- Building RESTFUL services using Spring boot, Spring WS, etc
- Hands on experience in Microservices
- Data-Layer Development: MySQL, NoSQL, ORM








