
- Java, J2EE
- Microservices
- Spring Boot
- JPA, REST API, JSON, JWT, OAuth, Spring Security, Swagger
- Oracle / MySQL / Postgres DB
- Angular / React / React Native
- JIRA, Bitbucket
Must-Have -
- Excellent knowledge of Core Java and Spring
- Strong experience in REST API and web services
- Experience in Oracle / Mysql / Postgres DB
- Should be efficient with Java J2EE and related technologies
- Should have very good communication skills and analytical skills.
- Should have good knowledge in Software Development Life Cycle and Agile methodologies.
- Good knowledge of current / emerging technologies and trends
- Good analytical and problem-solving skills
- Excellent written and verbal communication skills. High levels of initiative and creativity
- Good communication skills with all stakeholders, good team player with the ability to mentor juniors
Good to Have:
- Knowledge in Banking Domain
- Full-stack developers with knowledge and understanding of Javascript and associated technologies like React, Angular, HTML5, CSS will have an advantage.

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Job Title: Java Developer
Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills: • Exp. - 5 to 14 years.
• 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.
Key Responsibilities/Duties:
· Develops and enhances software applications through coding and testing.
· Writing well designed, testable, efficient code
· Involves in code reviews and training.
· Contributing in all phases of the development lifecycle
· Delivers highest quality software by creating unit test plans and testing code thoroughly.
· Adept with the tools, applications, and processes used for software development.
· Implements solutions as designed in technical documentation specification and coding standards.
· Creates project documentations and coordinates technical issues.
· Knows the business rules and concepts, software specifications and designs provided by the technical lead and apply them in completing the assigned task.
Qualification: Bachelors or Master’s degree in Computer Science or Engineering.
• Excellent interpersonal/communication skills, both verbal and written •
• 7+ years of experience in Java/Node.js, REST/Graph QL, Redis on AWS Fargate • Design and develop high quality back-end code (Node.js/Go/JAVA) • Excellent in one or more Go, Java, Node.js skills • In-depth knowledge of Restful / GraphQL API, JSON.
• Experience with CI/CD and tools like Git, Bitbucket and Jenkins.
• Solid understanding of relational databases (e.g., Postgres, MySQL) and experience in NoSQL (e.g., Graph DB, MongoDB, DynamoDB).
• Developing new software applications, features, and distributed services that support a high-scale web application
• Experience working in a fast-paced environment; continuous deployment, test-driven development, agile methodologies
• Stay current with the latest back-end technologies and best practices and share your findings with the team
• Help evolve our backend stack and mentor our other developers when it comes to patterns and best practices
• Work as part of an agile team across a variety of application domains
• Write structured, tested, readable and maintainable code • Participate in code reviews to ensure code quality and distributed knowledge
• Ability to contribute to each step of the product development process (ideation, implementation, and release)
• Experience with performance tuning, profiling, and debugging applications
· 3+ years of Java backed application development and implementation experience.
· Minimum of one year of experience in Cloud, AWS Engineering & Development .
· Demonstrated knowledge of Distributed and Scalable systems.
· Experience on AWS Services is a big plus, such as EC2, ECS, ECR, Lambda, Elastic Cache, API Gateway.
· Knowledge about API design standards, patterns and best-practices especially Swagger and OpenAPI 3.0, REST, SOAP, MQ, JSON, Microservices etc.
· Java Microservices, RESTful Web Services.
· Spring Boot, Spring Cloud, Hibernate.
· JMS, queues, JBoss/Wildfly.
· Tools - JUnit, Easymock, Mockito, Docker, Kubernetes, Teraform.
- Contribute to architectural and design discussions.
- Design, Develop & Unit test features in the product.
- Ensure smooth and timely communication with both the internal and external stakeholders.
- Participate in estimations and ensure timely delivery of the features.
- Conduct peer reviews and ensure the quality of committed code.
Essential Experience And Skill-Set You Should Have
- Should have at least 2-4 years of experience in software development.
- Should have at least 2 years of hands-on experience in Java as a programming language.
- Should be well versed with Java 8 or above.
- Strong foundation in computer science, with strong competencies in Data Structures, algorithms, and their space-time complexities.
- Expertise in developing and consuming RESTful, micro-services using Spring Framework.
- Expertise with Spring data persistence frameworks such as JPA, -Repositories, Entities, Entity Manager etc.
- Exposure to Spring Cloud Frameworks such as Discovery, Config, Spring Cloud Gateway, Ribbon.
- Good to have knowledge on other Spring Frameworks such as Spring Security, Spring AOP.
- Must be proficient with the Linux commands.
- Strong debugging and troubleshooting expertise
- Good working knowledge of Relational and Non-Relational Databases.
- Sound understanding of Agile Software Development Processes like Scrum & Kanban.
- Deep practical knowledge of Domain Driven Design approach to software design.
- Experience writing and maintaining Unit and Integration tests.
Additional Desirable Qualifications
- Good to have knowledge on Java reactive framework.
- Understanding of CI/CD (Jenkins, Maven, Docker, Kubernetes).
- Knowledge on message queueing frameworks like RabbitMQ / ActiveMQ/ Kafka will be add-on.
- Identity & Security Domain Knowledge covering OAuth2, OpenId - Connect, Digital Signatures & Certificates.
- Domain knowledge of Ed-tech industry will be a plus
Required Soft Skills
- A self-starter attitude, the ability to work independently and in a group, demonstrated initiative, and good writing/briefing skills are great to have.
- Should be good at analytical thinking and breaking down large problems into solvable chunks.
- Demonstrated the ability to think creatively and come up with ideas/thoughts with significant business/ organizational impact.
- Ability to quickly adapt to changing technological trends.
Qualifications
- 4+ years of software development experience in Java 8. Knowledge of Java 9.
- Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing, distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion & Loosely Coupled Micro Services
- Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
- Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
- Experience with Multithreading, Concurrent Package and Concurrent APIs
- Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
- Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
- Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on experience with Spring.
- Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
- Experience of writing Junit test cases using Mockito / Powermock frameworks. Should have practical experience with Maven/Gradle and knowledge of version control systems like Git/SVN etc.
- Good communication skills and ability to work with global teams to define and deliver on projects. Sound understanding/experience in software development process, test-driven development.
- 4+ years of software development experience in Java 8. Knowledge of Java9.
- Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing, distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion & Loosely Coupled Micro Services
- Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
- Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
- Experience with Multithreading, Concurrent Package and Concurrent APIs
- Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
- Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
- Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on experience with Spring.
- Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
- Experience of writing Junit test cases using Mockito / Powermock frameworks. Should have practical experience with Maven/Gradle and knowledge of version control systems like Git/SVN etc.
- Good communication skills and ability to work with global teams to define and deliver on projects. Sound understanding/experience in software development process, test-driven development.
Additional Information
- Gender-Neutral Policy
- 18 paid holidays throughout the year for NCR/BLR (22 For Mumbai)
- Generous parental leave and new parent transition program
- Flexible work arrangements
- Employee Assistance Programs to help you in wellness and well being
Primary Location: Pune
Description:
Responsibilities -
● The candidate is expected to lead one of the key business areas end to end. This is pure
hands on role but he/she may need to mentor junior person in the team.
● Requirement gathering with business and get this prioritized in the sprint cycle.
● Come up with Project Architecture design and get the same approved from Tech Review
committee.
● Ensure quality and timely delivery.
Technical and Professional Requirements-
Required Tech Skills
● Very Strong fundamental of OOPs programming
● Very Strong at Java fundamentals, Multithreading, Streams
● Good understanding of Data Structure
● Good knowledge of any distributed caching /computing framework/tools
● Good at SQL query/optimization
Nice To Have (willing to learn)
● AWS Lambda (Serverless), Redis, Kinesis , Big Data , Sparx , spring boot , NoSQL
database , React Js, JMS/SQS , AWS Cloud, nodejs, python
● Well versed with latest technology stack on server side programming
● Good to have business knowledge of Loan management.


• Architecture: Knowledge of data structures and an eye for architecture.
• Strong coding/debugging abilities: You have advanced knowledge of at least one
programming language, and are happy to learn more. Either Go or Java
• Distributed Systems: Experience building distributed systems at scale.
• Fast learner:
• A team player:
• Design and business acumen
Basic Qualifications
• 8 years of experience profeciency in Java or Go language and in handling large data systems
• Proficiency in Spark and related big data handling architectures• Proficiency in SQL


Product Developer Competencies required: 1.5+ Years of Software Development Experience. 2.Deep knowledge in either one of the following set a)Core Java, Multi Threading, Spring, Security, JVM Troubleshooting, Build Automation, Scripting. b)Spring MVC, Multi Threading,JSP, Servlets, AJAX, HTML5,JQuery, Angular JS, JavaFX, Web Security. 3.Having knowledge or experience about below is plus a)SOAP, Restful Webservices, NoSQL, Messaging System, Distributed In-Memory DataGrid , ExtJS, JavaFX 4.Able to adopt and understand new technologies and utilize them efficiently 5.Passionate about code quality and readability 6.Basic experience and knowledge of UNIX 7.Excellent communication skills - essential to effective collaboration within the team and our clients across the globe. 8.Computer Science Degree or Technical equivalent, MS a plus

