Java Developer

We are looking for an experienced Java Support Engineer with 4+ years of hands-on experience in supporting and maintaining Java/Spring Boot-based applications. The ideal candidate will be responsible for production support, debugging issues, and ensuring smooth application performance.

Key Responsibilities:

• Provide L2/L3 support for Java/Spring Boot applications in production and non-production environments.
• Perform incident analysis, root cause identification, and apply quick fixes or permanent solutions.
• Handle application deployments, environment monitoring, and performance tuning.
• Collaborate with development, DevOps, and database teams to resolve technical issues.
• Write and debug SQL queries, manage data fixes, and ensure database integrity.
• Use monitoring tools like Splunk, Kibana, or ELK Stack for issue investigation.
• Prepare documentation for recurring issues and maintain knowledge base.

Technical Skills:

• Strong in Core Java, Spring Boot, RESTful APIs
• Good knowledge of SQL / PL-SQL (Oracle / MySQL / PostgreSQL)
• Familiar with Linux/Unix commands and Shell scripting
• Exposure to microservices architecture and CI/CD tools (Jenkins, Maven)
• Hands-on experience with application monitoring and log analysis tools
• Knowledge of cloud (AWS / Azure) environments is a plus

Soft Skills:

• Strong problem-solving and analytical mindset
• Good communication and teamwork skills
• Ability to work under pressure and handle on-call support if required

Wissen Technology is now hiring for a Java Developer

Location : Bangalore (The candidate must be based in Bangalore, as an in-person interview is a mandatory part of the selection process)

Notice Period: Immediate to Serving Notice Period & Up to 30 Days max

Skills: Hands-on experience in Core Java, Spring Boot, Microservices, Algorithms, Data Structure and SQL

Note: Bachelor's or Master's degree from a top-tier college or university is must.

Key Responsibilities:

• Design, develop, and test low-latency, high-volume client-facing applications.
• Develop and maintain enterprise-scale, n-tier applications for the investment banking/capital markets domain.
• Implement microservices-based solutions using Spring Boot and other modern frameworks.
• Work extensively with Core Java 5.0 and above, Spring Framework, and CXF
• Optimize applications for multi-threading and high-performance server-side development
• Collaborate with cross-functional teams to design and implement scalable, secure, and efficient solutions
• Work with RDBMS (preferably Sybase) to handle large-scale data processing.
• Develop and maintain applications on Unix/Linux environments
• Utilize enterprise application design patterns to build robust and scalable solutions.
• Troubleshoot and resolve complex technical issues while ensuring application stability and performance.

Required Skills & Experience:

• 1 to 6 years of hands-on experience in Java development
• Strong knowledge of microservices architecture and cloud-based deployment.
• Expertise in Spring Framework, Spring Boot, and CXF
• Experience in developing and optimizing applications for high-volume, multi-threaded environments
• Solid understanding of financial domain applications, sales, and trading platforms
• Proficiency in working with relational databases (Sybase preferred)
• Familiarity with Unix/Linux environments and shell scripting.
• Strong analytical, problem-solving, and communication skills.
• Ability to articulate and present design ideas effectively.
• Education: Bachelor's or Master's degree from a top-tier college or university is must.

• Create, maintain, test, and fix back-end infrastructure, including databases, data integration, API, core application logic, and other processes that need to be done behind the curtain. Since the job responsibilities can be performed remotely, we simply want our back-end developer to analyze user needs and improve user experience according.
• proficient in server-side development and optimization of data, including database creation and management and debugging
• Integrate data from various back-end services and databases
• Create and maintain software documentation
• Create user-friendly and intuitive interfaces
• Create and analyze reliable and secure back-end functionality
• Maintain, expand, and scale designed database
• Collaborate with front-end developers and web designers to match visual design intent.
• Design RESTful APIs
• Experience working with relational database like mysql/oracle, Mangodb

Responsibilities

• Understand existing business operations tool used by customer support and business teams.
• Work with Engineering Manager to upgrade the system to improve system stability and response times.
• Independently lead design and implement new features as per business requirements provided by Product Management team.
• Develop elegant, modular and maintainable solutions. Document all design, operations steps for knowledge sharing purposes.
• Guide junior team members on feature implementation and provide relevant training on existing modules.

Must-know Technologies

• Java EE
• Java Server Facelets (JSF)
• Java Persistence API (JPA), Hibernate
• SQL
• HTML, CSS, JavaScript
• Payara/GlassFish/similar application server environments

Preferred Skills

• 2-8 years of overall experience in software design and development.
• Ability to analyze existing application, implement new features and re-architect the application in case of inefficiencies.
• Strong object-oriented skills and ability to apply design patterns.
• Experience mentoring junior engineers on development, code review, project planning.

• Strong experience in Java Development
• Deep expertise and hands-on experience with Web Applications
• Expertise in Java, Spring Boot is an added advantage.
• Experience in Microservices
• Hands-on design experience with Web Services (REST, SOAP, etc ..).
• Strong grasp of security principles.

Nice to Have

• Spring Zuul
• Kafka
• cryptography and certificates

Abilities:

• Developer with  strong ability to develop web applications using Java
• Should be able to Code, design, and implement
• Maintain code integrity and organization

General Accountabilities/Job Responsibilities

• Participation in the requirements analysis, design, development and testing of applications.
• The candidate is expected to write code himself/herself.
• The candidate is expected to write high level code, code review, unit testing and deployment.
• Practical application of design principles with a focus on the user experience, usability, template
• designs, cross browser issues and client server concepts.
• Contributes to the development of project estimates, scheduling, and deliverables.
• Works closely with QA team to determine testing requirements to ensure full coverage and best
• quality of product.
• There is also the opportunity to mentor and guide junior team members in excelling their jobs.

Job Specifications

• BE/B. Tech. Computer Science or MCA from a reputed University.
• 3 -12 Years of experience in software development, with emphasis on JAVA/J2EE Server side programming.
• Hands on experience in Core Java, Multithreading, RMI, Socket programing,
• JDBC, NIO, webservices and Design patterns.
• Should have Knowledge of distributed system, distributed caching, messaging frameworks,
• ESB etc.
• Knowledge of Linux operating system and PostgreSQL/MySQL/MongoDB/Cassandra database is essential.
• Additionally, knowledge of HBase, Hadoop and Hive are desirable.
• Familiarity with message queue systems and AMQP and Kafka is desirable.
• Should have experience as a participant in Agile methodologies.
• Should have excellent written and verbal communication skills and presentation skills.
• This is not a Fullstack requirement, we are purely looking out for Backend resources.