Java Developer

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

• Work with product managers to understand product requirements and make them live.
• Ownership of end to end development

• Startup mindset of getting things done and focussing on business goals
• Proven problem solving skills
• 3+ years Hands on experience in designing and developing applications using server side technology (Java, Spring Boot / Node.js, Express)
• Excellent knowledge of Relational Databases, SQL and ORM technologies
• Good knowledge of design patterns
• Proficiency in REST architecture
• Experience with test-driven development
• Experience with Git/CI/CD/Gradle/Maven
• Inclination towards writing quality and performant code

• Experience in Agile development
• Performance tuning, testing, refactoring and automation
• Experience working with AWS Cloud and Devops technologies (terraform , cloudformation, ansible)
• Experience running a production environment
•  

Role / Purpose - Lead Developer - API and Microservices

Must have a strong hands-on development track record building integration utilizing a variety of integration products, tools, protocols, technologies, and patterns.

• Must have an in-depth understanding of SOA/EAI/ESB concepts, SOA Governance, Event-Driven Architecture, message-based architectures, file sharing, and exchange platforms, data virtualization and caching strategies, J2EE design patterns, frameworks
• Should possess experience with at least one of middleware technologies (Application Servers, BPMS, BRMS, ESB & Message Brokers), Programming languages (e.g. Java/J2EE, JavaScript, COBOL, C), Operating Systems (e.g. Windows, Linux, MVS), and Databases (DB2, MySQL, No SQL Databases like MongoDB, Cassandra, Hadoop, etc.)
• Must have experience implementing API Service architectures (SOAP, REST) using any of the market-leading API Management tools such as Apigee and frameworks such as Spring Boot for Microservices
• Should have Advanced skills in implementing API Service architectures (SOAP, REST) using any of the market-leading API Management tools such as Apigee or similar frameworks such as Spring Boot for Microservices 
• Appetite to manage large-scale projects and multiple tracks
•  Experience and knowhow of the e-commerce domain and retail experience are preferred

Responsibilities

1. Writing clean, high-quality, high-performance, maintainable code
2. Develop and support software including applications, database integration, interfaces, and new functionality enhancements
3. Coordinate cross-functionally to insure project meets business objectives and compliance standards
4. Support test and deployment of new products and features
5. Participate in code reviews

Skills & Qualifications

• 4-12 years of experience in Java Development.

• Excellent verbal and written English communication is a must. You may have to interact with clients directly.

• Technology agnostic approach is a must. Ready to adopt new technology and a faster learning curve.

• Writing scalable, maintainable and reusable code.

• Keen interest in SAAS based products and mobile applications.

• Experience working with Distributed Systems

• Java, Spring Boot, Microservices, API Design Experience with Event-Driven Architecture, Multithreading

• Kafka iOS Experience with Event Sourcing Reactive and Functional

• Programming Strong understanding of best practices for creating/working with Microservices

• Experience implementing Message Brokers and Messaging subsystems(experience working with Kafka a strong plus)

• Be open-minded, creative, and self-critical; be collaborative and communicative

• Have experience with and curiosity about agile and lean philosophies

• Experience working with small teams to ship products to market

• Have experience developing full-service consumer, employee and business applications

• Language agnostic and experienced polyglot Passion for Working Software and SOLID principles

• Experience with designing and refactoring complex systems

• Experience with Test-Driven Development (TDD) Interest in working in a pair-programming environment Deep understanding of design patterns and applying them in production environments

• Passion for enabling team members

• Java 8 or Java 11. Both are LTS. The project will be on Java11

• Spring Boot

• Git

• SQL

• AWS and AWS Aurora

• Microservices

• Multithreading

Perks

• Flexible time schedule.
• Work from home or work from anywhere.
• Health insurance.
• Team building activities.
• Training and conference tickets.

Minimum of 4+ years of experience in Java development

• Experience delivering Services (REST, SOAP) and Web applications in Micro services architecture
• Experience developing and deploying Java solutions to cloud
• Experience in Spring Boot and components of Spring framework
• Experience in a JavaScript framework such as Angular or React
• Experience in TDD using Junit or similar frameworks

·       Experience in Design Patterns and service oriented architectural principles, Data structures and Algorithms.

·       Individual should be an active participant in the product design and code reviews for self and team and can competently review any aspect of their product or major sub-system.

·       Experience in SQL, Unix skills.

·       Good communication Skill

• 4 to 6 years plus experience in having implemented Hybris Commerce Solution.
• Working experience in Java, Spring, and Hibernate is a must
• Working experience of customizing Hybris Accelerators
• Proficient in Hybris core concepts and commerce concepts including, but not limited to, Hybris PCM Data Modeling, Endeca/SOLR, WCMS/ Customer Experience Manager, Cockpits, Cron jobs, internationalization, personalization, security concepts, and REST.
• Proficient in the catalog, order management, promotions, B2B commerce.
• Should have experience in handling multi/Omni-channel architecture through related Hybris Channel management modules.
• Good understanding of integration patterns/methodologies of Hybris with Organic SEO Search, Faceted Search, and Commerce Search.
• Should have exposure on the continuous integration build tools and code quality tools
• Working experience of Integration with external services such as payment gateways, Order management solution using Web services such as REST and SOAP
• Working experience of SOLR Search Engine is a plus

Idea Clan is an Internet Marketing company that works with a lot of global ecommerce, Social Media and performance marketing clients. We own an Influencer network called Viral Sparks. We work with huge brands like twentytwowords.com, ranker, diply, littlethings.com, boredometherapy, providr etc. We are a Certified GOLD partner with Microsoft and an expert at CPA (Cost per action) marketing solutions. Everyone that works at IdeaClan is family. And we grow as one.

We are looking for a Java developer responsible for building Java applications. This includes anything between complex groups of back-end services and their client-end (desktop and mobile) counterparts. Your primary responsibility will be to design and develop these applications, and to coordinate with the rest of the team working on different layers of the infrastructure. Thus, a commitment to collaborative problem solving, sophisticated design, and product quality is essential.

- Translate application storyboards and use cases into functional applications

- Design, build, and maintain efficient, reusable, and reliable Java code

- Ensure the best possible performance, quality, and responsiveness of the applications

- Identify bottlenecks and bugs, and devise solutions to these problems

- Help maintain code quality, organization, and automatization

- Proficient in Java, with a good knowledge of its ecosystems

- Proficient in Springboot, Hibernate, RabbitMQ

- Solid understanding of object-oriented programming

- Familiar with various design and architectural patterns

- Skill for writing reusable Java libraries

- Knowledge of concurrency patterns in Java

- Familiarity with concepts of MVC, JDBC, and RESTful, GraphQL

- Experience with popular web application frameworks, such as Play and Spark

- Knack for writing clean, readable Java code

- Experience with both external and embedded databases

- Understanding fundamental design principles behind a scalable application

- Basic understanding of the class loading mechanism in Java

- Creating database schemas that represent and support business processes

- Basic understanding of JVM, its limitations, weaknesses, and workarounds

- Implementing automated testing platforms and unit tests

- Proficient understanding of code versioning tools, such as Git

- Familiarity with build tools such as Ant, Maven, and Gradle

- Familiarity with continuous integration