Role/ Responsibilities
- Design APIs, DB, Queues, monitoring for micro services.
- Writing, deploying and managing micro services.
- Migrate existing components into distributed micro service architecture.
- AWS Cloud / Google Cloud Platform (Manage Infrastructure).
- API integration with 3rd parties.
- Unit test cases, automation.
- Database optimisation.
- Design of highly concurrent backend architecture.
- Handling high traffic data.
Experience required:
- Sound fundamentails in software design.
- Must have worked on distributed and micro service architecture.
- Sound fundamentals on scale/ performance/ memory optimisation.
- Sound fundamentals of authentication, authorization, payment processes, data security.
- Must have experience in Spring / Spring boot.
- Good to have experience in Kafka / JMS / RabbitMQ / AWS Elastic queue.
- Good to have experience in Junit / mockito unit test cases.
- Good to have knowledge in Mysql (or any RDBMS).

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Wissen Technology is now hiring for Java Developer with hands on experience in Core Java, multithreading, algorithms, and data structure.
We are solving complex technical problems in the financial 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 highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
Experience - 3+.
Experience in Core Java 5.0 and above, CXF, Spring.
Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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 client-facing applications.
Good development experience with RDBMS, preferably Sybase database.
Good knowledge of multi-threading and high-volume server-side development.
Experience in sales and trading platforms in investment banking/capital markets.
Basic working knowledge of Unix/Linux.
Excellent problem solving and coding skills in Java.
Strong interpersonal, communication and analytical skills.
Should have the ability to express their design ideas and thoughts.
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 7 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 client facing 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 has successfully 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.
Job Summary:
We are looking for an experienced Java Developer with 4+years of hands-on experience to join our dynamic team. The ideal candidate will have a strong background in Java development, problem-solving skills, and the ability to work independently as well as part of a team. You will be responsible for designing, developing, and maintaining high-performance and scalable applications.
Key Responsibilities:
- Design, develop, test, and maintain Java-based applications.
- Write well-designed, efficient, and testable code following best software development practices.
- Troubleshoot and resolve technical issues during development and production support.
- Collaborate with cross-functional teams including QA, DevOps, and Product teams.
- Participate in code reviews and provide constructive feedback.
- Maintain proper documentation for code, processes, and configurations.
- Support deployment and post-deployment monitoring during night shift hours.
Required Skills:
- Strong programming skills in Java 8 or above.
- Experience with Spring Framework (Spring Boot, Spring MVC, etc.).
- Proficiency in RESTful APIs, Microservices Architecture, and Web Services.
- Familiarity with SQL and relational databases like MySQL, PostgreSQL, or Oracle.
- Hands-on experience with version control systems like Git.
- Understanding of Agile methodologies.
- Experience with build tools like Maven/Gradle.
- Knowledge of unit testing frameworks (JUnit/TestNG).
Preferred Skills (Good to Have):
- Experience with cloud platforms (AWS, Azure, or GCP).
- Familiarity with CI/CD pipelines.
- Basic understanding of frontend technologies like JavaScript, HTML, CSS.
-
Designing, implementing and maintaining Java-based applications
-
Contributing in all phases of the development lifecycle
-
Writing testable, scalable and efficient code
-
Test and debug new applications and updates
-
Maintain up to date code documentation
-
Participating in code reviews
Should have worked on Springboot and Hibernate
- Programming Language: Java, J2EE
- Framework: Spring MVC, Spring Security, Hibernate, JMS
- Strong knowledge in any one Relational Databases (Mysql / Oracle/ SQL Server).
- Operating System: Windows & Linux.
- Configuration Management: GIT
- Tools & Utilities: STS / Eclipse / IntelliJ / NetBeans.Web/Application Server: Jboss.
- Excellent hands-on experience and knowledge of SQL.
- Strong experience in Web services (SOAP and RESTFUL).
- Should have expertise in Design Patterns, Transactions, Multi-threading concepts.
- Experience using Maven.
- Knowledge of data structure
- Deliver entire application life cycle - concept, design, build and test complex web applications.
- Gather requirements around functionality and translate those requirements into elegant functional and technical solutions.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Unit-test code for robustness, including corner cases, usability, and general reliability.
- Perform bug fixing and ensure acceptable application performance.
- Continuously upgrade knowledge on technology changes, evaluate impact to application, and implement changes to ensure minimal latency in application availability to users.
- Work closely with project/product managers while effectively working across multiple projects and delivering to deadlines.
- Mentor the team members on the nuances of technology and implement best practices within the team.
Experience in Design Patterns, Design principles & memory Management.
- Strong understanding of data structures and algorithms
- Sound understanding of object-oriented programming and excellent software design skills.
- Good experience of SOA/Microservices/Restful services and development of N-tier J2EE / Java Springboot applications (API- s).
- Strong understanding of database design and SQL (mySql/mariaDB) development
- Should have experience in Apache Kafka, RabbitMQ, or other Queueing systems.
Delivery of High Quality, Scalable and Extensible systems, and applications on-time and on-budget.
-Adoption and Evolution of the software engineering practices and tools within the organization
- Keep in sync with the latest technology developments and open source offerings. - Collaborate with other technology and business teams within the organization to provide efficient robust solutions to the problems.
● J2EE with a good understanding of Servlets and JSP
● Experience in Spring Modules – Spring IOC and AOP, Spring Boot (version 2 plus), JDBC
● Expertise in design and development of various web and enterprise – level applications using Java/J2EE
technologies such as Spring, Hibernate, Rest services.
● Web Services (including SOAP, XML, XML Schema, JSON, and REST)
● Tools required: Maven,Eclipse, Github, and Swagger
● Good knowledge of SQL and Redis (NOSql)
● Ability to document requirements and specifications
● Proven work experience as a Software Engineer or Software Developer
● Ability to develop software in Java or any other OOPS languages
● Excellent knowledge of relational databases, SQL and ORM technologies (JPA2, Hibernate)
● Experience in developing Web Applications using at least one popular Web Framework (Spring)
● Experience with test-driven development
● Proficiency in software engineering tools
system performance.
Experience with JSP & Servlet.
Experience with open source frameworks/libraries like Spring, Hibernate, Struts, JUnit etc.
Experience with MVC frameworks like Spring MVC, Struts, JSF etc.
Experience with XML and webservices (SOAP/REST).
Experience with application Servers like Web logic, WebSphere and Jboss.
Experience with JavaScript, Jquery, AJAX, CSS, HTML.
Knowledge of Messaging (JMS,MDB etc.) is a plus.
Knowledge of build tools like Maven and ANT is a plus.
Good understanding of object oriented methodologies and design principles.
Knowledge of the PTC/Servigistics/Click Commerce/Xelus “Service Depot
Management/SL/Repairs and Returns/XDR” application is a plus.
Experience working with large amounts of data.
Able to work with and participate within a small multicultural professional team.
Understanding of performance profiling / tuning.
Familiar with Agile methodologies/tools.
Experience with SQL.
Experience in analysis, design, coding, and implementation of enterprise Java web
applications.
General understanding of scalability and high-availability systems.
Excellent communication/documentation skills
Ability to work effectively under pressure with constantly changing priorities and deadlines
As Back end developer, we expect you to be motivated in solving real-life complex problems and create compelling experiences for our Resellers. Being a small company we have a culture of creative problem solving, intellectual design, fast-paced development, and passionate product delivery. Enhance or build Restful web services for our mobile app.
Responsibilities:
- Develop server-side components, REST APIs
- Assume ownership for existing and new modules including design, development, and unit testing for enhancements of existing modules and development of new modules.
- Analyse problems logically and exercise sound judgment in defining, evaluating, and solving difficult technical and operational problems where solutions may be of a precedent-establishing nature.
- Lead the design and architectural improvements
- Participate and collaborate with team members in design discussions, determines areas of complexity, potential risks to successful implementation, suggest enhancements to architecture, implement POCs, and enhance application.
- Reduce technical debt with quality coding
Requirements:
- A solid grounding in Computer Science fundamentals (based on a BS or MS in CS or related field) from IITs and Premier Engineering College.
- Excellent Object Orientation, coupled with excellent problem solving and debugging skills.
- Highly skilled at Java and related technologies, including Java Frameworks like Spring-boot or Drop wizard, RESTful web services, JSON, Servlet, JSP, MySQL, MongoDB, Kafka, AWS Solr.
- Must have hands-on experience in building scalable and secure back end systems.
- Have hands-on experience with systems that are asynchronous, RESTful and demand concurrency
- Good to have knowledge of best software engineering practices for all stages of the software development life cycle, including coding standards, code reviews, testing, deployment.








