
Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location - Senior Backend Developer – Java (with Python Exposure)- Mumbai
Experience - 4 to 10 years
Kindly revert over mail if you are interested.
Java Developer – Job Description
We are seeking a Senior Backend Developer with strong expertise in Java (Spring Boot) and working knowledge of Python. In this role, Java will be your primary development language, with Python used for scripting, automation, or selected service modules. You’ll be part of a collaborative backend team building scalable and high-performance systems.
Key Responsibilities
- Design and develop robust backend services and APIs primarily using Java (Spring Boot)
- Contribute to Python-based components where needed for automation, scripting, or lightweight services
- Build, integrate, and optimize RESTful APIs and microservices
- Work with relational and NoSQL databases
- Write unit and integration tests (JUnit, PyTest)
- Collaborate closely with DevOps, QA, and product teams
- Participate in architecture reviews and design discussions
- Help maintain code quality, organization, and automation
Required Skills & Qualifications
- 4 to 10 years of hands-on Java development experience
- Strong experience with Spring Boot, JPA/Hibernate, and REST APIs
- At least 1–2 years of hands-on experience with Python (e.g., for scripting, automation, or small services)
- Familiarity with Python frameworks like Flask or FastAPI is a plus
- Experience with SQL/NoSQL databases (e.g., PostgreSQL, MongoDB)
- Good understanding of OOP, design patterns, and software engineering best practices
- Familiarity with Docker, Git, and CI/CD pipelines

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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Desireable skills
3+ years of experience as a Back-end developer
In-depth understanding of the entire web development process (design, development, and
deployment)
Hands-on experience with Java, Springboot and Hibernate
Working knowledge in SQL
Familiarity with Agile methodology of development process
Problem-solving attitude
About the Company:
We are a Series A funded Indonesian online group buying platform that helps people connect with like minded people who want to buy the same item/product at a discounted price. The team is spread across India and Indonesia, and is led by experienced founders who have founded, set-up, scaled and exited businesses across India and Indonesia. We have raised our first round of funding, and are growing extremely fast. We are actively looking for Full Stack developers to join our team.
Job Duties and Responsibilities
We are looking for an experienced full-stack engineer to implement both back-end and front-end software solutions to serve both internal and external customers. The position entails working in an agile team to develop Java- and React-based projects that support our system.
- Design, implement and test full-stack solutions using Java, Spring and React
- Design robust spring system that can support 2-5mil users.
- Work alongside other team members to integrate various components into finished product
- Work closely with product owner to create stories
- Continuously create new and interactive features that would help to improve user experience and user engagement.
- Assist with troubleshooting of issues as needed
- Participate in the design and architecture of software solutions
- Assist in developing and maintaining continuous integration pipelines
Salary range : 15 lpa - 30 lpa or more depending on candidate experience.
Skills required :
You will be best qualified if you have experience with several (not all) of the following:
- JAVA
- Python (Flask and Django)
- Spring/Spring Boot
- React
- Hibernate
- Linux
- REST
- Kafka
- Mysql
- AWS
- ELK Stack (Elasticsearch)
- CI/CD Pipelines
Qualifications:
- 2+ years of experience in Java based technologies
- 1+ years of experience in Python
- Experience in designing databases and system architecture
- 1+ years of experience in Front end technologies like HTML, CSS, JavaScript and ReactJs
Why join us?
- You will get to work with an experienced team who has worked in multiple startups.
- Experimenting is the name of the game. And POCs are the snacks that fuel them.
- Grow with us. It is a family
- Gain exposure to two of the fastest growing markets in the world - South East Asia and Social Commerce
Responsibilities:
- Participation in the requirements analysis, design, development and testing of applications.
- The candidate is expected to write code himself/herself.
- The candidate is expected to write high level code, code review, unit testing and deployment.
- Practical application of design principles with a focus on the user experience, usability, template designs, cross browser issues and client server concepts.
- Contributes to the development of project estimates, scheduling, and deliverables.
- Works closely with QA team to determine testing requirements to ensure full coverage and best quality of product.
- There is also the opportunity to mentor and guide junior team members in excelling their jobs.
Requirements:
- BE/B. Tech. Computer Science or MCA from a reputed University.
- 3.5 - 6.5 Years of experience in software development, with emphasis on JAVA/J2EE Server side programming.
- Hands on experience in Core Java, Multithreading, RMI, Socket programing, JDBC, NIO, webservices and Design patterns.
- Should have Knowledge of distributed system, distributed caching, messaging frameworks ESB etc.
- Knowledge of Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database is essential.
- Additionally, knowledge of HBase, Hadoop and Hive are desirable.
- Familiarity with message queue systems and AMQP and Kafka is desirable.
- Should have experience as a participant in Agile methodologies.
- Should have excellent written and verbal communication skills and presentation skills.
Good Experience & Understanding of CRM & ERP processes & Design
- 3+ years of hands-on experience in ERPNext Platform and Frappe Framework, Python, JavaScript and MySQL/MariaDB
- Strong knowledge of configuration and customisation of the ERPNext platform
Must have,
- Fundamental of Python(Data types in python, scope of variable, asynchronous programming)
- Should be able to code in Python
- Basic Understanding of Database
- API designing
- Problem Solving skills
- Fundamentals of storage, caching
Good to have,
- AWS Knowledge,
- Python Framework(Django, Flask)
- Knowledge on Message Broker, Caching
- SQL and no-SQL database
2+ years of experience developing web applications using J2EE.
2+ years of experience in Spring Boot.
Good knowledge of MicroServices.
Expertise developing enterprise-level web applications and RESTful APIs using MicroServices, with demonstrable production-scale experience.
Working experience in Industry Standard protocols related API Security including OAuth is a must.
Demonstrate strong design and programming skills using JSON, Web Services, XML, XSLT, PL/SQL in Unix and Windows environments.
Strong Shell scripting experience
Passion to stay on top of the latest happenings in the tech world and an attitude to discuss and bring those into play.
Strong collaboration and communication skills within distributed project teams
Excellent written and verbal communication skills
The ideal candidate should be a self-motivated, multi-tasker, and demonstrated team player. You will be responsible for the production support of software products and coordinating with various teams for support. You should have outstanding communication and Team-Player skills.
Educational Qualification: BCA, MCA or BE/B.Tech (CS)
Must-know technologies: Java,
Good to know technologies: DMN tools
Experience: 02 Years - 05 Years
Skill Level: Good
Responsibilities:
- Contribute to Java development work as well as the latest Decision model and notation tools
-
Comply with coding standards and directions given by his direct manager Collaborate with an international and diverse team of Data Architects, Business Analysts, and Project Managers
-
Tasks will be assigned and after completion, code need to be committed and task assigned for review by Senior Java developer
-
Work with technology stakeholders to devise solutions that will fulfill business requirements and meet organizational strategic goals
-
Develop application functionality which meets business requirements with high quality within given deadlines - develop maintainable, well-documented application functionality with an eye toward standardization, common components, simplicity, performance, robustness and other attributes of enterprise-strength solutions
-
Thoroughly test all functionality - utilize detailed and thorough practices including negative testing, testing of boundary conditions, , and work collaboratively with business areas.
-
Support interfaces between the deployment of developed applications and the decommissioning of legacy applications
-
Support with the Development and Infrastructure Teams
-
Design, and develop scalable, high-performance, highly reliable and secure applications using waterfall and agile methodologies
-
Create reusable code
We are looking for an experienced Java Developer who will work closely with the
technical lead to identify and establish best practices in the company.
Requirements & Responsibilities :
● Design and develop features using Core Java, Spring Boot, and Hibernate
● Ability to design database schema, develop views and stored procedures
● Participate in user story grooming, design discussions and proposal of solutions
● Maintain existing software systems by identifying and correcting software defects
● Practice standard development process leveraging agile methodologies such as
SCRUM and TDD
● Review and analyze business requirements and provide technical feasibility and
estimates
● Manage development / support functions etc
● Excellent in OOPS concepts, system design
● Strong knowledge of Core Java, Spring, Hibernate and Microservices
● Hands-on experience in DB design, SQL, UI Technologies like HTML/CSS,
JavaScript, jQuery, etc.
● Good knowledge of design patterns
● Excellent knowledge of JSP, Servlets, WebServices, JUnit
● Experience in Agile software development
● Familiarity with JIRA, GIT, Maven
● Experience in working directly with a client
● Good knowledge in requirement gathering, analysis, and designing









