JAVA/J2EE ENGINEER / SR ENGINEER

We are solving complex technical problems in the financial industry and need talentedsoftware engineers to join our mission and be a part of a global software development team. As a Java Full Stack Developer, you will be responsible for designing, developing, and maintaining enterprise applications using Java and Angular. You will collaborate with cross-functional teams to define, design, and ship newfeatures, and you will work closely with Architects to ensure the technical feasibilityof designs and implement them accordingly

Job Title: Senior Java Full Stack Developer

Locations: Delhi NCR, Hyderabad, Chennai, Pune, Bangalore Experience: 6–13 Years

Employment Type: Full-Time

"Need Immediate joiners or serving notice period candidates only can join in a maximum of 30 days"

About the Role

We are looking for an experienced and highly skilled Java Full Stack Developer with strong backend expertise in Java and hands-on experience in ReactJS for front-end development. The ideal candidate will drive the design, development, and implementation of high-performance, scalable applications that meet business goals.

Key Responsibilities

Backend Development (Approx. 80%)

• Design, develop, and maintain robust and scalable backend services using Java, Spring Boot, and related frameworks.
• Build and optimize RESTful APIs and microservices.
• Collaborate with cross-functional teams to define backend architecture and ensure high availability and performance.
• Troubleshoot complex issues, debug code, and improve overall system reliability.
• Participate in code reviews, design discussions, and technical decision-making.

Frontend Development (Approx. 20%)

• Develop responsive user interfaces and reusable ReactJS components.
• Integrate frontend components with backend services and APIs.
• Ensure high performance, cross-browser compatibility, and seamless user experience.

General

• Work in an Agile/Scrum environment and deliver high-quality software on schedule.
• Maintain robust documentation and follow SDLC best practices.
• Mentor junior developers and contribute to team growth.

Required Skills & Qualifications

• 6–13 years of professional experience in software development, with a strong focus on backend systems.
• Advanced proficiency in Java, Spring Boot, and related server-side technologies.
• Hands-on experience with ReactJS and modern JavaScript.
• Solid understanding of REST APIs, microservices architecture, and web services.
• Strong database skills (SQL and/or NoSQL) and familiarity with schema design.
• Experience with version control (e.g., Git) and CI/CD practices.
• Excellent problem-solving, debugging, and communication skills.

Preferred Skills (Bonus)

• Experience with containerization and orchestration (Docker, Kubernetes).
• Exposure to cloud platforms (AWS, Azure, GCP).
• Knowledge of message queuing (Kafka, RabbitMQ).
• Familiarity with automated testing frameworks and best practices.

Education

• Bachelor’s or Master’s degree in Computer Science, Engineering, IT, or a related field (or equivalent practical experience)

Responsibility:

∙Develop and maintain code following predefined cost, company and security

standards.

∙Work on bug fixes, supporting in the maintenance and improvement of existing

applications.

∙Elaborate interfaces using standards and design principles defined by the team.

∙Develop systems with high availability.

∙Attend and contribute to development meetings.

∙Well versed with Unit testing and PSR Standards.

∙Master Software Development lifecycle, standards and technologies used by the

team.

∙Deliver on time with high quality.

∙Write Automation tests before to API call to code it and test it.

∙Trouble Shooting and debugging skills.

∙Perform technical documentation of the implemented tasks.

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Position Summary

The Java Software Developer designs and develops computer applications using the Java programming language. Managing small-to-large scale projects, with respect to business impact, throughout the development life cycle. In this role, you can expect to leverage your 5+ years of Java engineering skills and knowledge to develop, test, and release features assigned to you and the Software Development team. You will be challenged daily to solve problems, expand your knowledge of the existing platform, and the technologies that can be used to continuously improve it.

Essential Functions

• Owns assigned projects throughout the development life cycle, from design through quality testing. Develops high quality code that delivers desired functionality using the technology selected for the project.
• Utilizes techniques including pair programming to ensure code quality. Additionally, maintains code quality through best practices, unit testing, and code quality automation.
• Supports continuous integration process.
• Collaborates closely with team members to determine best practices and client requirements for software.
• Develops intuitive software that meets and exceeds the needs of the company.
• Professionally maintains all software and provides regular updates that address client and/or company concerns.
• Analyzes and tests programs and products before formal launch. Addresses and troubleshoots coding problems quickly and efficiently to ensure a productive workplace.
• Ensures software security by developing programs to actively monitor the sharing of private information.
• Actively seeks ways to improve business software processes and interactions.
• When needed, provides valuable coaching and training for team members to ensure all employees are confident in the use of software applications.
• Regularly modifies software to fix errors, adapt to new hardware, improve overall performance, and/or upgrade interfaces.
• Directs system testing and validation procedures. Provides software programming and documentation development.
• Provides project proposals and project status updates to clients and departments, as needed. Prepares recommendations and project plans for the installation of new systems or modifications of an existing system.
• Works closely with clients and departments to resolve technical issues - including (but not limited to) software system design and maintenance.
• Regularly participates in an agile delivery process by helping size stories. Owns, researches, and recommends new solutions.

Skills and Abilities

• Excellent problem-solving skills and technical aptitude to solve complex issues.
• Proven ability to manage multiple high-priority projects.
• Excellent communication skills, both written and verbal.
• Ability to quickly adapt to a changing environment.
• Skilled in object-oriented (OO) design and design pattern.
• Skilled with Java 8 features, such as lambdas and streams.
• Demonstrated knowledge of API design standards, patterns, and best practices (especially Swagger and OpenAPI 3.0, REST, SOAP, MQ, JSON, Microservices etc.).
• Expert understanding of Spring Framework, Spring MVC REST, ORM/Hibernate and JDBC. As well as Hibernate/JPA and Object-relational mapping, including performance considerations.
• Experienced with RDBM systems: MYSQL Server, Oracle.
• Strong understanding of relational databases and writing SQL queries.
• Familiarity with the following front-end technologies: HTML, Javascript, CSS, Angular, Git, SQL, Maven

Experience

• Experience as a Java Developer, Java Engineer, or similar role required (i.e., Spring Framework / Spring boot and J2EE development required).
• Experience designing and developing REST API / web applications.
• Experience working with Agile methodologies (Scrum) and cross-functional teams (Product Owners, Scrum Masters, Developers, Designers, Business Analysts) a major plus.
• Advanced knowledge and experience in Cloud/SAAS integration, a plus.

Education

• Bachelor’s degree in computer science or a related field of study or equivalent level of education and experience.

• Java/J2EE, Spring, Spring Boot, REST, JSON, Micro Services, 12 Factor Apps, Apache.
• Strong understanding of microservice architecture
• Ability to design, develop and implement scalable, elastic microservice based platforms.
• Demonstrated knowledge of OAuth token-based authentication protocol.
• Demonstrated knowledge of PCI and Security Coding Standards.
• Performs hands on coding using Java/J2EE & unit testing.
• Contribute to the Design and develop high quality software for large scale Java/Spring Batch/Micro-service Applications.
• Proficiency in the following general areas: Java (Java 1. 7/Java 1. 8), Spring Framework, Jenkins, Gradle, and GitHub.
• Experience with RESTful services, Rabbit MQ, JSON, Unix Scripting, and Hadoop is a plus.
• Core development experience in large scale enterprise Java applications using Spring Framework.
• Experience in SQL (DB2 & SQL databases)
• Strong knowledge and experience on Nginx as APIM tool Solid experience in coding and creating APIs.
•  Expertise in WSDL, XML, XSLT, JSON, XPATH and Gateway scripts
• Provide front line support for Nginx related problems by being involved in troubleshooting, root cause analysis and appropriate secure integration recommendations.
• Installation of Nginx API Gateway as per need.
• Experience in Containers and Kubernetes.
• Good linux and administration skills
• Experience on API Orchestration/Mediation/Protocol Bindings and transformation knowledge on disparate message structures
• Design, develop and implement API proxies using OpenAPI specification Analysing logs and trace for errors and exceptions Manage and publish content in Developer portal Security implementation using OAUTH, SAML, CORS 
• Must Have Knowledge of API development and its technologies.

Location: Remote Working

** Preference will be given to immediate joinee

Experience in Java (2+ years)

• Experience in SprintBoot(2+years)
• Good Knowledge of Microservice Concept
• Framework: Springboot, Spring Security, JAX-RS, Hystrix, Kafka
• ORM: Spring Data JPA. Hibernate
• Cloud Service: AWS(MSK, S3), Serverless lambda Functions
• Build tools: Maven, Gradle

Roles & Responsibilities

1. Position : Technical Lead (JAVA/J2EE)
2. Salary : As per the Industry standard 
3. Role: (70% Technical; 30% Team Leading Activities)
4. Successfully design medium to large-scale Enterprise solutions using Java technologies
5. Good knowledge of the design patterns like core design patterns, J2EE design patterns and architectural design patterns along with knowledge of UML
6. Lead technical discussion to provide technical guidance and create coding standards
7. Good with architecting and engineering systems independently, would want the individual to be comfortable implementing a significant part of the framework.
8. Provide technical knowledge and leadership on design and development best practices. 
9. Provide technical input on unit and integration tests for server- and client-side applications, build and deployment procedures and standards.
10. Interaction with management and module leads

Required skills

1. 5+ years of experience in developing and testing software using Java J2EE based application
2. Experience in managing team technically.
3. 3+ years of experience in Object Oriented Analysis and Design. 
4. 2+ years of experience in developing application using Spring (Spring Core, Spring ORM and Spring Batch), Hibernate.
5. 2+ years of experience in web technologies using Spring MVC, jQuery. 
6. Good knowledge of design patterns
7. Knowledge on SSL, Web application security frameworks
8. Experience in J2EE performance and scalability
9. Hands on experience on Maven, Jenkins, Nexus etc.
10. Proficient in Software development/integration/build tools like GIT, GERRIT, JIRA/BugZilla
11. Sound knowledge of Object-Oriented Analysis, Design and Design Patterns especially MVC is must
12. Good Knowledge and hands on experience on different databases.  
13. Proficient in Writing / Understanding PL / SQL objects like stored procedures, triggers.  
14. Knowledge on various Application servers including WAS, WLS and JBoss.  
15. Very strong skills in to Angular, AJAX, JSF, Struts, HTML 5, CSS, Bootstrap.  
16. Implement jUnit (unit testing framework) in the project
17. Excellent Oral and Communication skills.