
Job Description:
- Location - Bangalore / Mumbai
- Notice period - Immediate to serving up to - oct 1st week
- Exp. - must be 5 -12 yrs
- Experience in Core Java 5.0 and above, CXF, Spring.
- Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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 client-facing applications.
- Good Experience into Microservices , Data structures , Oops , Algorithms, multithreading etc
- Good development experience with RDBMS, preferably Sybase database.
- Good knowledge of multi-threading and high-volume server-side development.
- Experience in sales and trading platforms in investment banking/capital markets.
- Basic working knowledge of Unix/Linux.
- Experience into High /Low level designing.
- Excellent problem solving and coding skills in Java.
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.

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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ey Responsibilities:
- Design, develop, and maintain microservices using Java (Spring Boot).
- Implement RESTful APIs and ensure integration with front-end and third-party services.
- Work with AWS services such as EC2, ECS, Lambda, S3, RDS, API Gateway, CloudWatch, etc.
- Utilize CI/CD pipelines (Jenkins / GitHub Actions / AWS CodePipeline) for deployment automation.
- Implement security, scalability, and high availability best practices in microservice architecture.
- Collaborate with DevOps, QA, and Product teams to deliver robust solutions.
- Monitor and troubleshoot production issues using AWS CloudWatch / ELK / Prometheus & Grafana.
- Participate in code reviews, design discussions, and agile ceremonies.
Required Skills & Qualifications:
- Strong proficiency in Java 8+, Spring Boot, Spring Cloud, and RESTful APIs.
- Solid understanding of microservices architecture and service discovery / communication patterns (Eureka, Feign, Ribbon, etc.).
- Hands-on experience with AWS Cloud (ECS, Lambda, API Gateway, RDS, DynamoDB, S3, CloudFormation).
- Experience with Docker and Kubernetes for containerization and orchestration.
- Proficient in RDBMS / NoSQL databases (MySQL, PostgreSQL, MongoDB).
- Familiar with CI/CD pipelines, Git, and DevOps best practices.
- Knowledge of message brokers (Kafka, RabbitMQ, SQS) is a plus.
- Strong debugging, problem-solving, and analytical skills.
- Experience in Core Java, CXF, Spring.
- Experience in spring boot, microservices.
- Extensive experience in developing enterprise-scale n-tier applications for the financial domain. 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 client-facing applications.
- Good development experience with RDBMS, preferably Sybase database
- Good knowledge of multi-threading and high volume server side development
- Experience in sales and trading platforms in investment banking/capital markets
- Basic working knowledge of Unix/Linux
- Excellent problem solving and coding skills in Java
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
Job Description
Key Responsibilities
- API & Service Development:
- Build RESTful and GraphQL APIs for e-commerce, order management, inventory, pricing, and promotions.
- Database Management:
- Design efficient schemas and optimize performance across SQL and NoSQL data stores.
- Integration Development:
- Implement and maintain integrations with ERP (SAP B1, ERPNext), CRM, logistics, and third-party systems.
- System Performance & Reliability:
- Write scalable, secure, and high-performance code to support real-time retail operations.
- Collaboration:
- Work closely with frontend, DevOps, and product teams to ship new features end-to-end.
- Testing & Deployment:
- Contribute to CI/CD pipelines, automated testing, and observability improvements.
- Continuous Improvement:
- Participate in architecture discussions and propose improvements to scalability and code quality.
Requirements
Required Skills & Experience
- 3–5 years of hands-on backend development experience in Node.js, Python, or Java.
- Strong understanding of microservices, REST APIs, and event-driven architectures.
- Experience with databases such as MySQL/PostgreSQL (SQL) and MongoDB/Redis (NoSQL).
- Hands-on experience with AWS / GCP and containerization (Docker, Kubernetes).
- Familiarity with Git, CI/CD, and code review workflows.
- Good understanding of API security, data protection, and authentication frameworks.
- Strong problem-solving skills and attention to detail.
Nice to Have
- Experience in e-commerce or omnichannel retail platforms.
- Exposure to ERP / OMS / WMS integrations.
- Familiarity with GraphQL, Serverless, or Kafka / RabbitMQ.
- Understanding of multi-brand or multi-country architecture challenges.
Job Title: Golang Developer
Location: Kolkata
Job Type: Full-time
Working Days: 5 Days (Rotational off)
About the Role:
We are seeking a skilled Golang Developer with experience in Golang, Node.js, WebSocket
communication, and API development. In this role, you will work closely with our development
team to design, develop, and maintain high-performance backend systems and real-time
applications.
Key Responsibilities:
Design, build, and maintain efficient, reusable, and reliable Golang code.
Develop scalable APIs and microservices.
Integrate and build real-time communication using WebSocket protocols.
Collaborate with frontend developers and other team members to establish objectives
and design more functional, cohesive systems.
Write clean, maintainable, and well-documented code.
Optimize applications for maximum performance, scalability, and security.
Participate in code reviews, contribute to team knowledge, and continuously improve
development processes.
Troubleshoot, debug, and upgrade existing systems.
Occasionally work with Node.js services and modules when needed.
Required Skills and Qualifications:
Min 3+ years of experience in backend development with Golang.
Solid understanding of Node.js and JavaScript/TypeScript.
Hands-on experience with WebSocket integration and real-time applications.
Strong knowledge of RESTful APIs, API design principles, and API documentation. Experience with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
Good understanding of concurrent programming and microservices architecture.
Familiarity with cloud platforms (AWS, GCP, Azure) is a plus.
Knowledge of containerization tools like Docker and Kubernetes is a plus.
Strong problem-solving skills, attention to detail, and a proactive attitude.
Role & Responsibilities:
- Handle multiple products/modules simultaneously, lead the team in development and support
- Lead development teams
- Daily updates to customers and Product Managers/Delivery Managers
- Participate in design discussions
- Design and Architect small modules
- Effort estimations for modules, subsystems or use cases.
- Learn new skills and mentor the new team members
- Champion best practices within the team, including code reviews
Work Experience & Skills:
- B.E/B.Tech or any relevant Masters degree from reputed college.
- Strong 5+ years of experience in Java, J2EE, Spring IOC, Spring Annotations, Spring JDBC, Jquery, Java script, HTML 5 and CSS
- Strong experience in Postgres or any SQL technology
- Experience with working on Tomcat, Apache, JBoss or any similar application server
- Should have 3+ years of experience in leading team.
- Good experience in JSON / RESTful API / Web Services.
- Experience in working on Agile methodology using Scrum and sprints
- Experience in using build tools, Maven, GIT, Bugzilla or similar tools.
- Experience in cloud technologies, Microservices and frameworks such as AWS or GPC, container technologies like Docker is a plus.
- Ability to adapt to new development environments, changing business requirements and learning new systems highly desired
- Experience in Microservices, SpringBoot and Angular is a plus.
- Experience with tuning deployed applications for scalability and performance.
- Good knowledge of deployment and scripting on Linux/Unix servers
- Strong technical documentation skills.
- Good oral and written communication skills
Position Responsibilities:
1. Design, implementation, and deployment of applications
2. Expert knowledge in performance, scalability, enterprise system architecture, and engineering best practices.
3. Functionally decompose complex problems into simple, straight-forward solutions.
4. Work extensively with cross-functional teams across.
5. Work with the business team and project managers to convert functional requirements into detailed technical specifications.
6. The ideal candidate will be a leader, builder, and operator. He/she should be able to operate in a very fast-paced environment where time to hit the market is supercritical.
Desired Candidate profile:
1. A Bachelor's/Master’s degree in Computer Science or equivalent combination of technical education from Elite College or institution and work experience.
2. 4+ years of Software Development experience.
3. Excellent object-oriented design and coding skills (Java, C++ on a UNIX or Linux platform).
4. Very strong software development background including design patterns, data structures, test-driven development.
5. Ability to design and implement systems end to end on your own while maintaining highest coding standards.
6. Excellent knowledge of design patterns and ability to reflect it in their code.
7. Ability to lead projects and mentor junior engineers on the same.
8. Mandatory work experience in skills sets: REST API, JDBC, RDBMS (PostgreSQL, MySQL)
9. Solid Experience with distributed (multi-tiered) systems, algorithms, and relational databases.
10. Software development experience in Servlet, JSP, Spring, AWS, S3, SQS, building web services and highly scalable applications or Google Cloud Suite.
11. Excellent verbal and written communication skills.
- 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










