
- Excellent Java programming skills.
- Experience in Web application Technologies like JAVA/JSP, HTML, Javascript, and CSS.
- Development experience using Java Spring Boot, Maven
- Knowledge and Experience in using REST API
- Experience in Database Query Languages.
- Experience in designing new application framework or migrating to new framework architecture, redesign, working on POC
- Should be open for understanding debugging the architecture of legacy systems and suggest changes wherever applicable.
- Experience in frameworks like Spring, Hibernate
- Experience in Multi-tier development/deployment of Web Application
- Experience in Producing and Consuming RESTful Web Services
- Strong in developing complex SQL Scripts to generate reports
- Familiarity in Maven, Gitx
- Familiarity in Unit Testing (JUnit)
- Familiarity with Continuous Integration tools (Jenkins etc)

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Job Title: Senior Java Developer
Location: Mumbai (On-site)
Notice Period: Immediate Joiners Preferred / 15 Days or Less
Job Description:
We are seeking a highly skilled and experienced Senior Java Developer with 5+ years of hands-on experience in Java-based application development. The ideal candidate should be adept at designing scalable systems, optimizing performance, and leading development efforts in collaboration with cross-functional teams. This is a full-time, on-site position for candidates currently residing in Mumbai and available to join within 15 days.
Key Responsibilities:
- Lead end-to-end design, development, and deployment of Java applications
- Translate functional and technical requirements into detailed design
- Build scalable, secure, and high-performing applications
- Develop and consume RESTful APIs and ensure seamless integration
- Implement microservices architecture and containerized deployments
- Write clean, efficient, and well-documented code
- Perform code reviews, debugging, and performance tuning
- Collaborate with DevOps for CI/CD and production deployments
- Guide junior developers and conduct knowledge-sharing sessions
- Stay updated on new technologies and industry trends
Required Technical Skills:
- Languages & Frameworks:
- Core Java, J2EE
- Spring Framework (Spring Boot, Spring MVC, Spring Security)
- Hibernate / JPA
- Apache Maven / Gradle
- API Development & Integration:
- RESTful APIs, JSON, Swagger/OpenAPI
- Databases:
- MySQL, PostgreSQL, Oracle
- MongoDB, Redis (preferred)
- Frontend Exposure (Optional but Preferred):
- HTML, CSS, JavaScript, jQuery
- Angular / React
- Tools & Platforms:
- Git, GitHub / GitLab / Bitbucket
- Jenkins, Docker, Kubernetes (basic knowledge)
- SonarQube, Log4j, ELK stack (preferred)
- Cloud & DevOps (Good to Have):
- AWS (EC2, S3, Lambda, RDS), Azure or GCP
- CI/CD pipeline setup
- Architecture & Patterns:
- Microservices, MVC, Design Patterns
- Event-driven architecture (Kafka/RabbitMQ is a plus)
- Testing:
- JUnit, Mockito
- Postman, REST Assured
Soft Skills:
- Excellent problem-solving and debugging skills
- Strong communication and collaboration abilities
- Ability to lead and mentor a team
- Time management and task prioritization
- Adaptable and quick learner
Qualifications:
- Bachelor’s/Master’s degree in Computer Science, Engineering, or related field
- 5+ years of relevant software development experience
- Relevant certifications (Oracle Java, AWS, PMP) are a plus
Eligibility Criteria:
- Must be currently residing in Mumbai
- Must be able to join within 15 days or less
- Immediate joiners preferred
We are India’s fastest-growing digital trust platform offering services such as background verifications, reference checks, employee/staff onboarding, etc. We have completed more than 500+ million checks across 3000+ happy clients and since its inception, the company has shown continuous uptrend growth in an ever-changing business environment. As an organization, we are self-sustainable with positive cash flows.
At OnGrid, we are focused on redefining and reimagining Trust. We are leveraging APIs to build a digital trust platform all while being accountable that provides verified credentials instantly coming from the source directly. Having built the basic pillars of trust, we now want our imaginations to be let loose and think of avenues not explored and ways never implemented before. In this pursuit, we are looking for a motivated Staff Engineer (Backend) with experience in building high-performing, scalable, enterprise-grade applications, joining us, driving this vision, and taking it to a larger scale. If you are a visionary, always on the lookout for finding the right solutions, and a technology geek, constantly seeking to learn and improve your skillset, then you are the type of person we are looking for.
Roles & Responsibilities -
● Develop new user-facing features.
● Work alongside product to understand our requirements, and design, develop and iterate, think through the complex architecture.
● Writing clean, reusable, high-quality, high-performance, maintainable code.
● Encourage innovation and efficiency improvements to ensure processes are productive
● Ensure the training and mentoring of the team members
● Ensure the technical feasibility of UI/UX designs and optimize applications for maximum speed.
● Research and apply new technologies, techniques, and best practices.
Requirements -
• Bachelors/Masters in Computer Science or a related field
• 5 - 10 years of prior relevant experience
• Experience with web technologies and microservices architecture
• Java, Spring framework
• MySQL, Mongo, Solr, Redis,
• Kubernetes, Docker
• Excellent teamwork skills, flexibility, and ability to handle multiple tasks.
• Experience with API Design, ability to architect and implement an intuitive customer and third-party integration story • Ability to think and analyze both breadth-wise (client, server, DB, control flow) and depth-wise (threads, sessions, space-time complexity) while designing and implementing services
• Exceptional design and architectural skills
• Experience of cloud providers/platforms like GCP and AWS

- Backend development along with team management
- Hands on experience in product development
- Preferred candidates from Fintech and Banking sectors
- Exp in Python / Java slong with databases like MySQL, NoSQL, etc
- Knowledge of Agile methodology
Requirements
- 3+ years of experience in the Development of JAVA technology.
- Strong Java Basics
- Linux
- SpringBoot or Spring MVC
- Hands-on experience in Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Java 8
- Any Caching Mechanism
- Good at problem-solving
Good to Have Skills:
- 3 years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem-solving skills.
- Ability to work in a fast-paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding AI/ML algorithms is a plus.
Requirements:
- Energetic self-starter, with a desire to work in a startup environment.
- Proficient in advanced Java programming skills.
- Expert in Application development cloud/on premise end to end. Middle layer, DB layer.
- Nice to have understanding on MQ and DB
- Good hands on in Complex Event Processing systems.
- Solved scale and performance issues while dealing with huge sets of data. Pre compute or data aggregation frameworks to achieve good response time.
- Real world experience working with large datasets and NoSQL database technologies
- Experience of debugging applications running on Unix like systems (e.g. Ubuntu, CentOS)
- Experience developing RESTful APIs for complex data sets
- Knowledge of container based development & deployment (e.g. Dockers, rkt)
- Expertise in software security domain, a plus
Knowledge & Experience required:
· Bachelor's degree in Computer Science Engineering or equivalent degree.
· 7 years of development experience as a seasoned Java developer
· 7 years of experience in developing enterprise applications using enterprise Java 8 and has worked both on Web and Server side technologies.
· A strong Java Backend Developer with Core Java 8, Spring, Spring Boot, Hibernate, REST Web-services.
· Expertise in Java Unit Testing Frameworks and tools such as JUnit, TestNG, Mockito etc.
· As a Senior developer, must be comfortable switching tasks between Web Services, APIs, Batch Job engine or Web Development.
· Passionate Java developer who is also a problem solver and has a very good understanding of core and advanced Java concepts.
· Good understanding of database and data fundamentals in SQL Server 2017, Oracle and NoSql databases.
· Good understanding of Web Service concepts and experience building RESTful services is required.

1. POSITION DESCRIPTION |
|
Job Title: |
Switch Developer/ Integration/ Java Developer |
Job Type: |
Permanent | Work from Home |
Qualifications: |
Bachelor’s degree of Engineering, Computer Science or relevant field |
|
|
2. JOB DIMENSIONS: |
|
Experience |
3-7 years |
Primary Skills |
Core Java, Spring Boot, MySQL, Oracle, REST APIs, knowledge of card scheme specifications, ISO8583 Payment standards, EMV Data, Switch payment integration |
Job Location |
Mumbai/Bangalore | open to remote work |
|
|
3. REQUIREMENTS: |
|
· Looking for a Switch developer with 3-7 years of hands on working experience with minimum of 3-4 years in Card and Payment Domain. · Strong knowledge of core java & spring boot · Hands-on experience on payment switch integration · Good knowledge of ISO8583 and EMV Data. · Hands-on experience on any database like MySQL, oracle...etc. · Should be strong in creating/ defining Swagger specs for REST APIs, understand REST principles, Guidelines. · In depth knowledge of Card Scheme Specifications (VISA, MasterCard, Rupay and AMEX), Card · Well versed with payment standards and ISO8583 and EMV data (mandatory), · Hands on experience with Switch payment integration · Resolve technical issues for designers and developers during project lifecycle · Excellent problem solving/troubleshooting skills on Java/J2EE technologies · Result oriented and a versatile engineer who is expert in providing solutions, creating architecture and designs. · Excellent communication (written and verbal) and interpersonal skills |
• 4+ years of software development experience in Java 8. Knowledge of Java 9.
• Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing,
distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion &
Loosely Coupled Micro Services
• Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough
understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
• Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good
fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
• Experience with Multithreading, Concurrent Package and Concurrent APIs
• Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
• Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
• Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on
experience with Spring.
• Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
• Experience of writing Junit test cases using Mockito / Powermock frameworks. Should have practical experience with
Maven/Gradle and knowledge of version control systems like Git/SVN etc.
• Good communication skills and ability to work with global teams to define and deliver on projects. Sound
understanding/experience in software development process, test-driven development.
• 4+ years of software development experience in Java 8. Knowledge of Java9.
• Experience in developing micro services in Spring Boot or Node.js. Experience in security, transaction, Idempotency, log tracing,
distributed caching, monitoring and containerization requirements of Micro services. Experience in developing High Cohesion &
Loosely Coupled Micro Services
• Should have excellent acumen in Data Structures, Algorithms, problem-solving and Logical/Analytical skills. Thorough
understanding of OOPS concepts, Design principles and implementation of different type of Design patterns.
• Sound understanding of concepts like Exceptional handling, Serialization/Deserialization and Immutability concepts, etc. Good
fundamental knowledge in Enums, Collections, Annotations, Generics, Autoboxing, etc.
• Experience with Multithreading, Concurrent Package and Concurrent APIs
• Basic understanding of Java Memory Management (JMM) including garbage collections concepts.
• Experience in RDBMS or NO SQL databases and writing SQL queries (Joins, group by, aggregate functions, etc.)
• Hands-on experience with JMS. Hands-on experience in creating RESTful webservices and consuming webservices. Hands-on
experience with Spring.
• Hands-on experience with any of the logging frameworks (SLF4J/LogBack/Log4j)
• Experience of writing Junit test cases using Mockito / Powermock frameworks. Should have practical experience with
Maven/Gradle and knowledge of version control systems like Git/SVN etc.
• Good communication skills and ability to work with global teams to define and deliver on projects. Sound
understanding/experience in software development process, test-driven development.
Additional information
• Gender-Neutral Policy
• 18 paid holidays throughout the year for NCR/BLR (22 For Mumbai)
• Generous parental leave and new parent transition program
• Flexible work arrangements
• Employee Assistance Programs to help you in wellness and well being
Experience with Hibernate and Spring.
- Experience with Spring-boot, spring MVC
- Experience with all phases of the Software Development Lifecycle, including system analysis, design, coding, testing, debugging and documentation
- Teamwork & collaboration skills to work across organizations
- Problem solving skills to develop quick yet sound solutions to resolve complex issues
- Programming Language(s): Java, J2EE, JSON, HTML, DHTML, HTML 5, XML, EXTJS.
- Experience with XML/HTTP and Web Services
- Experience with HTML, JSP, CSS, JQuery / Ajax / JSON,
- Experience /Knowledge of Angular, React.
- Experience building J2EE based Web Applications
- Experience with MySql.

- A hands-on application developer who is passionate about Java development, building highly scalable and resilient applications, and focused on solving complex business problems
- He/She will have responsibility for unit-level design, coding, unit testing, integration testing, and participating in the full SDLC
- He/She will be expected to produce high-quality code that can pass critical peer review, and to work under a high-pressure and timeline-driven environment.
- Actively participate in development along with team members in creating modules & systems that can be treated as a working reflection of the best practices
Qualifications
- Bachelor’s degree or higher in Computer Science or Engineering equivalent
- Minimum of 3 years’ experience in Java development
- Responsible, organized and possess critical thinking with good interpersonal and communication skills
- Able to demonstrate good analytical problem-solving abilities and strong leadership aptitude
- Able to work at both abstract and detailed level
- Must be fluent in English, and strong communication skills.
- Motivated self-starter that likes to work as part of a team
Technical Requirements
- Strong experience in Core Java 8 and above, Collections and Data structures.
- Develop solutions using core java, Spring / Spring Boot, JSON, Rest API and other web technologies
- Hands on with UI development with strong experience in HTML5, JavaScript, CSS3, Responsive UIs. Added advantage for exposure to Angular. Knowledge on Liferay will be added advantage. Ability to design and develop UIs and end to end integration.
- Object oriented analysis and design using common design patterns
- Excellent knowledge of Relational Databases, SQL and ORM technologies (Hibernate and Mybatis)
- Strong knowledge of test-driven development and continuous integration
- Preference towards candidates having excellent Java multi-threading skills
- Passion for collaboration and working on agile teams
- Develop and Consume Web Services using REST.
- Enforcing and Writing code following good standards (well documented with good code coverage and properly tested code)

