Sr. java Developer

JOB DESCRIPTION:

Location: bangalore

Mode of Work : 3 days from Office

DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API

• Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
• Implement and integrate APIs using Spring Framework and Apache CXF.
• Build microservices-based architecture for scalable and distributed systems.
• Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
• Optimize performance through efficient multithreading, memory management, and algorithm design.
• Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
• Work with RDBMS (preferably Sybase) for backend data integration.
• Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
• Work in Unix/Linux environments for deployment and troubleshooting.

Required Skills & Experience:

• 3– 8 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
• Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
• Proven experience with Spring, CXF, and REST/SOAP web services.
• Solid understanding of microservices architecture and distributed systems.
• Experience working with Sybase or other relational databases.
• Expertise in multithreading, concurrency, and high-throughput server-side development.
• Exposure to capital markets, sales & trading platforms, or similar financial services applications.
• Good working knowledge of Unix/Linux environments.
• Experience in solution architecture and design documentation is a strong plus.
• Strong problem-solving skills, analytical thinking, and a proactive attitude.
• Excellent communication and interpersonal skills to work effectively with global teams.

Preferred Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• Previous experience in investment banking, capital markets, or financial technology domains

Company Name – Wissen Technology

Group of companies in India – Wissen Technology & Wissen Infotech

Work Location - Senior Backend Developer – Java (with Python Exposure)- Mumbai

Experience - 4 to 10 years

Kindly revert over mail if you are interested.

Java Developer – Job Description

We are seeking a Senior Backend Developer with strong expertise in Java (Spring Boot) and working knowledge of Python. In this role, Java will be your primary development language, with Python used for scripting, automation, or selected service modules. You’ll be part of a collaborative backend team building scalable and high-performance systems.

Key Responsibilities

• Design and develop robust backend services and APIs primarily using Java (Spring Boot)
• Contribute to Python-based components where needed for automation, scripting, or lightweight services
• Build, integrate, and optimize RESTful APIs and microservices
• Work with relational and NoSQL databases
• Write unit and integration tests (JUnit, PyTest)
• Collaborate closely with DevOps, QA, and product teams
• Participate in architecture reviews and design discussions
• Help maintain code quality, organization, and automation

Required Skills & Qualifications

• 4 to 10 years of hands-on Java development experience
• Strong experience with Spring Boot, JPA/Hibernate, and REST APIs
• At least 1–2 years of hands-on experience with Python (e.g., for scripting, automation, or small services)
• Familiarity with Python frameworks like Flask or FastAPI is a plus
• Experience with SQL/NoSQL databases (e.g., PostgreSQL, MongoDB)
• Good understanding of OOP, design patterns, and software engineering best practices
• Familiarity with Docker, Git, and CI/CD pipelines

Position Requirements

• Expert in front-end development using Javascript, CSS, and Java.

• Hands-on experience in Java, J2EE, Hibernate, Springboot.

• Deep knowledge & working experience with Database, JSP, Javascript frameworks.

Technical Skills

• 4 years of experience in the software industry experience.

• Strong self-initiative to strive for both personal & technical excellence.

• Coordinate efforts across the Product development team and Business Analyst team.

• Strong business and data analysis skills.

• Should be strong on coordinating with onshore resources on the development.

Responsibilities

- Software Engineering

- Design and develop highly scalable, available, reliable, secure and fault tolerant systems with minimal

guidance for a market leader in the logistics industry

- Partner with team members on functional and nonfunctional requirements and spread design

philosophy, goals and improve the code quality across the team

- Research new technologies and tools that enable building the next generation of our services

- Provide technology leadership to the team and foster engineering excellence

- Product Delivery

- Partner with product managers to define and execute on the feature roadmap

- Translate business requirements into scalable and extensible design

- Coordinate with various cross functional teams on planning and execution

- Maintaining automated build / test / deployment environments

Qualifications

- Software Engineering

- Should have at least 4 years of hands on experience in designing, developing, testing and deploying

applications on Java, Ruby, Kotlin, Python, Node or Go for large scale applications

- Deep knowledge of one of the programming language they have experience in

- Proficient in OOP and Design Patterns, experience with functional programming would be a plus

- Data modelling experience in Relational Databases

- Ability to design and implement low latency RESTful services

- Product Delivery

- Ability to scope, review and refine user stories for technical completeness and to alleviate dependency

risks.

- Well versed in working with agile methodologies which includes phases such as design, development,

code review, testing and release management

- Ability to have worked in a CI/CD environment, with hands on experience with Git or any similar source

code management tools

- Product Maintenance

- Experience troubleshooting server performance issues such as memory tuning, GC tuning, resource leaks

etc

- Continuously refactor applications to ensure high quality design.

Key Responsibilities:   

• Should have hands-on experience with Java   

• Strong experience in Spring Boot, Micro Services   

• Should be well versed with Agile Development methodologies   

• Should have strong debugging and communication skill   

• Should participate in design discussions and provide application designs, architecture, timeline estimations   

• Problem-solving mind and attitude   

• Ability to interface well with externally facing departments and directly with customers   

• Effective communication skills – written, spoken, listening, and presentation   

• Great Team player and experience working with global teams and global organizations Genuine interest in learning and knowledge sharing   

Primary Skills:   

• 2 years of Spring Boot and Microservices.   

• 3+ years of experience in Core Java.   

• Proficiency with Spring Framework.   

• Innovate new approaches algorithms, libraries, tools, platforms, for relevant development areas   

• Strong programming skills in Core JAVA / J2EE expert level   

• Good at data structures, algorithms, problem-solving, and design patterns   

• Knowledge of Web Services, Spring, ORM Frameworks, Spring Boot, Spring Cloud Gateway, OAuth2.0, Spring Security, JWT, Eureka, Hystrix, Apache Cassandra   

• Should be well familiar with SQL/NO-SQL database   

• Knowledge of Spring Batch, Kubernetes, Docker is a plus point    

Collaborate with clients and internal teams to develop appropriate solutions

• Brainstorm with team members and prove the ability to think on the fly.

Requirements

• Core Java

• Spring Boot, Spring Rest, Spring Data

• Testing framework - Junit, Mockito

• Experience in deploying applications on one of public cloud preferably Microsoft Azure. (Other

- AWS or Google Cloud)

• Experience in one of messaging platform preferably Kafka (Other - Rabbitmq or Active MQ)

• Docker

• Kubernetes

• Others – Linux, Git, Maven, CI/CD pipeline

• Experience in working with Agile teams

Good To Have

• Git (6+ years of experience)

• Develop test cases, conduct SIT, load test, and tune the performance of systems to meet

acceptance criteria.

• Perform and manage stages of the SCRUM and participate in the systems review with Project

Lead/Manager.

• Experience in the development of cloud-native applications is an added advantage.

• Experience working in Agile teams

What We Offer

• National and International Business Trips (if there is an opportunity)

• Culture of Knowledge Sharing and Training

• Modern & lively working environment

• Opportunity to write books, participate in conferences

• International assignment

• 8+ Bachelor’s degree in Computer Science or equivalent combination of technical education and work experience;
• 7+ years of Software Development experience and at least 1+ years of experience in building and leading strong engineering teams
• Deep hands-on technical expertise on server side technologies.
• Solid software development background including design patterns, data structures, test driven development, experience in building microservices and highly scalable and performant applications.
• Excellent verbal and written communication skills, and effective stakeholder management, in cross functional teams.
• Managed a team of 5+ engineers, taking care of the delivery planning, resource alignments, prioritization, performance management(including managing appraisal cycles), and effective feedback for the team and individuals.
  
  

• Expert software implementation and automated testing
• Promoting development standards, code reviews, mentoring, knowledge sharing
• Improving our Agile methodology maturity
• Product and feature design, scrum story writing
• Build, release, and deployment automation
• Product support & troubleshooting

• Demonstrated experience as a Java
• Should have a deep understanding of Enterprise/Distributed Architecture patterns and should be able to demonstrate the relevant usage of the same
• Turn high-level project requirements into application-level architecture and collaborate with the team members to implement the solution
• Strong experience and knowledge in Spring boot framework and microservice architecture
• Solid demonstrated object-oriented software development experience with Java, SQL, Maven, relational/NoSQL databases, and testing frameworks
• Strong working experience with developing RESTful services
• Should have experience working on Application frameworks such as Spring, Spring Boot, AOP

• Ability to take up tasks independently and willing to be an individual contributor when required
• Working experience or knowledge of Scrum/Kanban and SAFe agile processes
• Should have an excellent communication skill (Verbal & Oral)