
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.

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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Requirements
• Extensive and expert programming experience in at least one general programming language (e. g. Java, C, C++) & tech stack to write maintainable, scalable, unit-tested code.
• Experience with multi-threading and concurrency programming.
• Extensive experience in object oriented design skills, knowledge of design patterns, and a huge passion and ability to design intuitive modules and class-level interfaces.
• Excellent coding skills - should be able to convert design into code fluently.
• Knowledge of Test Driven Development.
• Good understanding of databases (e. g. MySQL) and NoSQL (e. g. HBase, Elasticsearch, Aerospike etc).
• 4+ years of experience in the art of writing code and solving problems on a large scale.
• Open communicator who shares thoughts and opinions frequently, listens intently, and takes constructive feedback.
- Development of applications in Java including:
- Building data processing platforms.
- Developing micro-service-oriented applications.
- Interact with stakeholders of the applications being developed.
- Must have experience in Java JEE, Spring Framework, and Microservices
- Experience in SQL and JDBC
- Experience in build tools Maven, git
- Good to have experience in Cloud Platforms AWS, Azure is a plus
Experience: 2 to 8 Years
Job Description
- Technical Skills requirement : JAVA, Multithreading, OOPS, Data Structure, Karaf.
- Total experience required should be around 2 to 8 years.
Job Description :
- Strong development skills in Java JDK 1.7 or above.
- Knowledge of Java 8 features and Multithreading is a must-have.
- Should have a strong acumen in Data Structures, Algorithms, problem-solving and LogicalAnalytical skills.
- Thorough understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
- Sound understanding of concepts like Exceptional handling, SerializationDeserialization and Immutability concepts, 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.)


● Designing, code reviews, POCs on latest cutting-edge technologies building,
deploying highly scalable and robust cloud based intelligent solutions.
● Architect & Design, code high performance and scalable solutions that meet the needs of millions of customers.
● Implement cutting-edge models and algorithms that operate on massive amounts of data.
● Working on the REST framework
● Working on session-based and token-based authentication, Working on Celery
● Handling the payment gateway
● Work with Multi-threading, Data Structures, Algorithm, Design Patterns and develop robust high-performance and scalable applications.
● Writing scalable code using Python programming language.
● Developing back-end components.
Job Description
· Strong Core Java / C++ experience with Strong Handson Coding
· Excellent understanding of Logical ,Object-oriented design patterns, algorithms and data structures.
· Sound knowledge of application access methods including authentication mechanisms, API quota limits, as well as different endpoint REST, Java etc
· Strong exp in databases - not just a SQL Programmer but with knowledge of DB internals
· Sound knowledge of Cloud database available as service is plus (RDS, CloudSQL, Google BigQuery, Snowflake )
· Experience working in any cloud environment and microservices based architecture utilizing GCP, Kubernetes, Docker, CircleCI, Azure or similar technologies



Tech Stack: FE: ReractJS, Mobile Programming: React Native, BE: GoLang, Cloud: AWS
No.Of Positions: 10
At least 1-2 years of experience with Golang, over all IT Experience should be over 4 years. Independent Contributor role Have expertise in implementing micro services (using tools and technologies for messaging, RPC, containerization, etc.) Experience working with SQL/NoSQL databases, ability to write complex queries and optimize them Golang Libraries knowledge good to have: Gorm, Gin, Viper, AMQP, validator, etc
- Proven hands-on Software Development experience
- Proven working experience in Java development
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring boot , hibernate Framework
- Well versed in Core Java, OOPs concepts, collections, multi-threading, concurrency, lambdas, and streams.
- Hands-on knowledge of Spring Core, MVC, JPA, Security, transaction
- Working knowledge of REST API designing as well as development, using Spring.
- Exposure to Spring Boot, Docker, Kubernetes, OpenShift for the microservices environment.
- Savvy with SQL and database concepts.
- Ability to use frameworks like JUnit, Mockito, etc., for implementing unit testing.
- Sound understanding of code versioning tools, such as Git/bit bucket with Maven.
- Should have worked in a CI/CD environment with TeamCity/Jenkins.
Headquartered in Silicon Valley, Gupshup is a global leader in cloud messaging, enabling businesses to build engaging conversational experiences, seamlessly across 30+ messaging channels, using a globally available cloud API.
Gupshup handles over 4.5 billion messages per month and has processed over 225 billion messages, enabling over 36,000 businesses to engage nearly a billion users across channels including SMS, WhatsApp, Facebook Messenger, Twitter, WeChat, Viber, Slack, Android RCS, Mobile App and Mobile Web.
Gupshup offers a comprehensive product portfolio that includes an easy to use omni-channel messaging API, advanced bot building platform and mobile marketing tools. Gupshup has also forged strategic partnerships with Facebook, WhatsApp, Google and Cisco to offer innovative mobile messaging solutions with broad reach.
You could log on to https://www.gupshup.io/developer/home">https://www.gupshup.io/developer/home for more information.
Location: Mumbai (Goregaon East )
Roles and Responsibilities:
- Experienced in Java and associated technologies.
- Should have worked with highly scalable web applications
- Good debugging capability
- Should be able to search through logs on server and narrow down to root cause of functional issue from stack trace or performance issue from logs of latency of different components.
- Product development experience in agile environment will be a big plus though not mandatory.
- Highly Tech Savvy and hands-on. Good exposure into design patterns
- Good understanding of OOPS concepts.
- Experience of working with open source technology and tools.
Regards,
Tina Dsouza

