
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. - 4 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:
Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen hassuccessfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers 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. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

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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Job Description
The ideal candidate will possess expertise in Core Java (at least Java 8), Spring framework, JDBC, threading, database management, and cloud platforms such as Azure and GCP. The candidate should also have strong debugging skills, the ability to understand multi-service flow, experience with large data processing, and excellent problem-solving abilities.
JD:
- Develop, and maintain Java applications using Core Java, Spring framework, JDBC, and threading concepts.
- Strong understanding of the Spring framework and its various modules.
- Experience with JDBC for database connectivity and manipulation
- Utilize database management systems to store and retrieve data efficiently.
- Proficiency in Core Java8 and thorough understanding of threading concepts and concurrent programming.
- Experience in in working with relational and nosql databases.
- Basic understanding of cloud platforms such as Azure and GCP and gain experience on DevOps practices is added advantage.
- Knowledge of containerization technologies (e.g., Docker, Kubernetes)
- Perform debugging and troubleshooting of applications using log analysis techniques.
- Understand multi-service flow and integration between components.
- Handle large-scale data processing tasks efficiently and effectively.
- Hands on experience using Spark is an added advantage.
- Good problem-solving and analytical abilities.
- Collaborate with cross-functional teams to identify and solve complex technical problems.
- Knowledge of Agile methodologies such as Scrum or Kanban
- Stay updated with the latest technologies and industry trends to improve development processes continuously and methodologies.
Experienced with Java, Spring Boot, Micro services architecture.
Have basic understanding for AWS, GitHub, Kafka or Any messaging queue SQL, Postgres, Oracle, Kubernetes, Data structure
The shift hours for this role is as follows: 2pm-11pm OR 3pm- 12am IST.
Role Overview:
Java Backend Developer, will be responsible for developing components of a Healthcare Interface Engine. This includes working on EHR connectors, data transformations, and scalable APIs, while collaborating with the architect to deliver secure and high performance workflows
Responsibilities:
- Build EHR connectors for inbound/outbound data (Epic, Athena, Cerner, etc.).
- Implement HL7 v2, FHIR R4, and X12 EDI transaction flows.
- Design, build, and maintain REST APIs for interoperability services. Handle transformations between JSON, XML, HL7 v2, and EDI. Implement queuing, retries, and error handling logic.
- Collaborate with architect on scalable and secure workflows. Troubleshoot, debug, and resolve technical issues across the stack, ensuring optimal performance and reliability.
- Stay current with emerging technologies and advocate for continuous improvement within the team.
Requirements & Skills:
- Strong in Java / Spring Boot and Spring Integration
- RESTful API development & security (OAuth2, JWT)
- Messaging systems (Kafka / RabbitMQ etc)
- SQL/NoSQL databases (Postgres, Redis etc)
- Proven experience in any high-level programming languages like Java (Preferably)
- Strong knowledge of data structure, algorithms and coding
- Experience with any Messaging technologies like Kafka or Rab-bitMQ, etc.
- Proven experience in database technologies like NoSQL
- Hands-on experience with Spring, Spring Security, Spring boot, and Hibernate framework.
- Working knowledge of developing Restful Micro services.
- Strong analytical, problem-solving skills.
- Attend team meetings to discuss projects, brainstorm ideas, and put forward solutions to any issues.
- Ability to understand the Platform/domain of the business in detail & Ability to multi-task.
- Good communication and organizational skill
- Experience: 1+ yrs - 3yrs
- Key Skills:
- Expert Proficiency in anyone the below programming language - Java, Node JS, PHP or GoLang
- Expert Computer Science fundamentals like Data Structures, Algorithms, Time Complexity, and others
- Strong Microservices, REST API, Git source control, CI/CD, and other latest technology trends
- Strong System Design, DB Design proficiency
- Strong knowledge in Design Patterns, best software development practices
- Good exposure to working in Open Source stack, E-Commerce, or Fintech domain.
Java Developer Requirements
· Minimum 7 to 15years of experience in Java/J2EE
· Outstanding skills in Java Struts, JSP, Hibernate
· Capability to understand DB design, SQL queries
· Experience in JavaScript, JQuery, JSON and AJAX
· Strong Object Oriented Analysis and Design skills
· Knowledge in source version control such as GIT
· Understanding on Agile methodologies
No of Opening: 7
Location: Chennai/Madurai (WFO)
· Degree in Computer Science or related field.
· Experience with user interface design, database structures, and statistical analyses.
· Analytical mind-set and good problem-solving skills.
· Excellent written and verbal communication.
· Good organizational skills.
· Ability to work as part of a team.
· Attention to detail.
- Designing scalable systems for high load.
- Defining and improving the development processes which includes implementation and Quality Assurance as well
- Architecting complex scalable systems with a keen eye towards performance, security and availability while also taking on a super hands-on role towards implementation
- Spearheading all inbound and outbound API integrations to build the most robust and scalable integration platform in the B2B Retail space.
- Working on interesting technical challenges in a product centric and open-source driven environment.
- Using open source as much as possible, and blogging about cool things that you learnt and built.
What you need to have:
- B.Tech /B.E.; Any Graduation
- Strong relational DB experience preferred
- Must be very much in touch with backend coding and want to do it everyday
- Our stack is primarily built around Node (Loopback), Mongo and ElasticSearch.
- Deep familiarity with Git and basic working knowledge of DevOps (Server and DB config, Docker, Kubernetes etc) is strongly preferred.
- Deep knowledge of NodeJS, PHP, MongoDB and MySQL.
- The role requires a good knowledge of Algorithmic Design and Architecture, Data structures, OOPS Concepts, serverless architectures and complex problem solving skills.
- You will help set a very high bar on code quality.
- We have started the transition towards micro services, one of your core responsibilities is ensure micro services are used wherever it makes sense
1. Demonstrable problem solving, analytical skills.
2. Ability to program (at Beginner or Advanced Beginner level in one or more programming
language like Java, C#, Python, JavaScript etc.).
3. Ability to think through a problem at conceptual level and propose solutions.
4. Excellent verbal and written communication skills.
5. Keen desire to learn, stretch and a never-give-up attitude.
6. Very strong interpersonal skills and an easy-going personality.
7. Highly proactive, result-oriented and team player.
8. Ability to stay current with new technology.
Roles and Responsibilities
1. Engineering graduates passing in 2022 starting to kick start their career in technology.
2. Ideal candidate should have hand-on interest in programming and some experience in
writing software applications. If you have a GitHub profile, please provide link to your work.
Nice to have internship / college project.
3. Knowledge of one or more programming language to write fully executable and functional
code is very desirable. Knowledge of databases is also desirable. Both these may be at a
Beginner or Advanced Beginner level.
4. You should be focused, enthusiastic, motivated, and have a desire to progress by learning,
executing and experimenting.
• Strong in Core Java (collections, multithreading, class loading, memory management,
transaction management etc.)
• Senior Java Developers using Java, J2EE, Spring, and Hibernate to develop web based
applications for enterprises; accessed from personal computers and mobile devices
• Candidate should have sound understanding of Object-Oriented Programming and Design
concepts
• Candidate should have sound knowledge of Spring and Hibernate
• Candidate should be able to recommend appropriate frameworks, libraries, design and
• develop web applications based upon a set of requirements
Mandatory Skills:
• Extensive knowledge in Object Oriented Programming and Design
• Extensive knowledge of Java, Spring, Spring Boot, Spring MVC
• Extensive knowledge in ORM frameworks such as Hibernate, MyBatis
• Extensive knowledge in design, creation and consumption of RESTful API
• Extensive knowledge in automated unit testing using JUnit, EasyMock, PowerMock, Mockito
• Thorough orientation towards Code reviews, Coding standards, Design Standards and Code
• Documentation
• Knowledge in design patterns
• Proactive approach to identify alternatives for a given problem statement
• Should have worked on enterprise class applications
• Should have worked in Agile environment
• Excellent oral and written communication skills
For Company Details please click the link below
www.multibank.com
Languages: Strong in Java v1.6 (v1.8, nice to have), good in SQL (for any relational database)
Framework: Spring Boot or Spring MVC Tools: Hibernate (or iBatis) for database, maven (or gradle) build tool Database: Any relational database experience (oracle, postgresql, sql server, mysql, etc) Web server/application server: Any server experience (tomcat, jboss, jetty, etc) Source code versioning: GitHub (or apache SVN) IDE: Eclipse (or anything else) Development platform: Windows or Linux Cloud platform: AWS (or any cloud platform) (optional)









