
Switch Developer/ Integration/ Java Developer
· 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
Payment card industry preferred

Similar jobs
● Complete ownership of the components that one works on - starting from
architecture design to monitoring metrics post deployment
Strong bias for action with a problem solving mindset. Meeting current
requirements or resolving issues while keeping bigger picture in mind.
● Thinking big while designing components. Keeping in mind that if we build our
current version for x users, it will be 10x within a year & 100x within 1.5 years
hands on experience in software development with excellent
problem-solving skills.
● Hands on experience on building highly-available, scalable systems.
● Expertise in Java with data structures, algorithms, spring, hibernate skills.
● Knowledge of NoSQL, MongoDB, caching data stores, queuing and search.
● Proficiency in computer science fundamentals: Object oriented design, data
structures, algorithm design, and complexity analysis.
● Good with the design patterns and architecture solution to large scale
applications.
● Nice to have: Cassandra, Kafka, Aerospike development experience with highly
scalable and performant software systems.
As a Backend Engineer you will be responsible for creating REST APIs which are used to drive the User Interface. Given the nature of the application, these APIs need to be very efficient and high performing. This requires optimizing queries for faster execution and introducing database changes that may be required. We are looking for individuals with great attention to detail, who are genuine, confident, committed and not only passionate about technology, but excited to work in a fun and friendly start-up environment. The ideal candidate will be passionate about technology and GETTING IT DONE.
Responsibilities:
- Develop, test, implement and maintain application software
- Take part in software and architectural development activities
- Debug application issues and helping support respond to client queries
- Participate in application development meetings
- Provide accurate estimates, clearly communicate status of tasks and identification of risks
- Commitment to accomplishing the task at hand and identify the fastest and most reliable way to solve a problem
- Performance tuning of application code at different service levels
- Interact with customers of the application and help address issues reported
Requirements:
- Bachelor's degree in Computer Science or equivalent
- 3+ years of experience with Java and Spring frameworks.
- Having good knowledge in a scripting language like python is a plus
- Experience with Spring and Hibernate/ ORM
- Understanding of relational database and normal forms
- Understanding of NoSQL / RDBMS (Mongo or Postgres) and ability to write optimized and high performing queries
- Strong understanding of Java concurrency, concurrency patterns, experience building thread safe code
- Experience building RESTful web services
- Strong written and verbal communication skills
- Strong interpersonal skills and time management skills
- Strong problem solving and analytical skills
- Experience with GIT as a VCS, Unix based systems
- Experience with NoSQL Database is a plus
- Following are a set of 'good to have' skills React AWS Bitbucket, JIRA
Role: Java Developer
Experience: 7+ years
Work Location: Chennai
Notice Period: Immediate Joiner
About Us
Fleet Studio, Inc. has worked with leading global consumer brands, startups, and agencies on cutting-edge technology products and solutions in mobile and web applications for a global audience for over 16 years. Our clear understanding of both design and technology combined with our emphasis on culture and consumer behaviors enhances communication and the final product. The products and solutions that we build are widely used by millions of users including companies of all sizes, from SMB to the enterprise as well as direct consumers.
Java Developer – Senior Level
We are seeking a highly skilled and experienced Java Developer with a proven track record in delivering high-quality applications. If you're passionate about building modern, scalable, and robust software solutions, we want to hear from you!
Required Qualifications
- 7+ years of software development experience with a focus on delivering robust and efficient solutions.
- Strong proficiency in Java and its latest versions and expertise in developing Java-based applications.
- Hands-on experience with relational databases and proficiency in writing complex SQL queries.
- Familiarity with Enterprise Java (J2EE / JavaEE / Spring) application architectures.
- Demonstrated history of delivering modern, high-cadence applications using:
- Agile methodologies and test-driven development (TDD).
- CI/CD pipelines for streamlined deployment and updates.
- Git version control for collaborative development.
Preferred Skills
- Knowledge of microservices architectures and Domain-Driven Design (DDD).
- Working knowledge of Python and JavaScript/Node.js.
- Experience with Object-Relational Mappers (ORMs) such as Hibernate or JPA.
- Strong Problem Solving skills
Bonus Skills
(If you don't possess these, we provide rapid onboarding to bring you up to speed!)
- Exposure to emerging Generative AI technologies and tools like OpenAI APIs and GPT large language models (LLMs).
- Practical experience with MongoDB or other NoSQL, MySQL databases.
Why Join Us?
We are at the forefront of innovation, blending cutting-edge technology with a dynamic and collaborative work environment. Joining our team means you'll have opportunities to work on exciting projects, grow your expertise, and make a significant impact.



The Role
Working as a “Backend Developer” at Bonzai gives you the opportunity to work on maintaining and improving the platform.
- Work on the entire product lifecycle starting from design to deployment and monitoring.
- Explore new technologies such as Kotlin, patterns such as Domain-Driven Design and other cool stuff such as Gitlab CI/CD pipelines, Docker, ECS, Golang, Python, Terraform, distributed tracing and even Haskell.
- Ensure top-notch performance in terms of product and feature experience.
What you need to succeed
- 2 - 3 yrs of experience in Java, Spring Boot, Hibernate, Rest API, and MySQL.
- Good to have experience/knowledge of other programming languages such as Kotlin or Python, other DBs such as Redshift, platforms such as AWS and architectural patterns such as https://martinfowler.com/bliki/DomainDrivenDesign.html">Domain-Driven Design (DDD) and https://en.wikipedia.org/wiki/Hexagonal_architecture_(software)">Hexagonal architecture.
- Good understanding of Object-oriented concepts, Functional programming and Design Patterns.
- Exceptional communication skills and ability to articulate complex ideas in written, spoken and visual language
- Bachelor in engineering preferably from a leading institute across the globe.
- Design and develop features using Java, Spring, and Hibernate
- Ability to design database schema, develop views and stored procedures
- Maintain existing software systems by identifying and
Correcting software defects.
- Review and analyse business requirements and provide technical software defects.
Key Skills:
- Good understanding of algorithms, data structures & design patterns
- Thorough understanding of core Java, Spring framework
- Experience with Spring Boot to bootstrap applications
- Good understanding and working experience with RESTful web services
- Knowledge of modern authorization mechanisms, such as JSON Web Token and OAuth2 - Familiarity with code versioning tools such as Git, etc.
- Self-starter who can think outside of the box, and come up with a solution to resolve and mitigate complex problems
- Experience working in an Agile development environment using methodologies like Scrum and tools like JIRA, Confluence, etc Experience.Comfortable with MYSQL,Mongodb
Role & Responsibilities:
- Design and develop features using Java, Spring, and Hibernate
- Ability to design database schema, develop views and stored procedures
- Maintain existing software systems by identifying and correcting software defects
- Review and analyze business requirements and provide technical feasibility and estimates
- 2-4 years of work experience developing Java-based backend applications. Around 1 year of work experience e using Spring Boot, Spring Cloud and Microservices.
Java, J2EE, Spring Boot, REST services, PostgreSQL
Experience with Elastic Search or any NoSQL DB is preferable
- Strong development experience in Core Java, J2EE, Spring Boot, Oracle SQL/PLSQL and App servers like WebLogic, JBOSS, Unix
- Good Knowledge of SOAP and REST API
- Should have knowledge in SOLID Principles & Design Patterns
- Should have working experience in UI like JSF, JSP, Html, CSS and Javascript / Jquery
- Experience with full-lifecycle development (i.e. design, coding, testing, debugging, etc.)
- Working experience to fix common vulnerabilities and security threat in SOA\Microservices applications
- Knowledge in OWASP Standards and Working knowledge in fixing security issues, data encryption and cryptography.
- Prior experience and knowledge of security tools like Fortify, Sonatype and webInspect is a plus
- Good to have knowledge and working experience in Angular JS
- Translate business requirements into detailed specs/designs
- Design thinking while arriving at solution
- Strong technical troubleshooting, diagnosing and problem-solving skills
- Ability to work with distributed teams in a collaborative and productive manner
- Solving complex business and workflow issues with solid scalable technical solutions
- Must be a self-motivated, proven performer who enjoy challenging assignments in a high-energy, fast growing workplace
- Agility and ability to adapt quickly to changing requirements and scope and priorities
- Good in communication, both written and verbal
- Should have Agile scrum experience.
- Team Player with very good attitude
- Attention to detail and focus on quality
- Knowledge in financial services domain is a plus
- Good to have knowledge on Static AppSec Testing (SAST) and Dynamic AppSec Testing (DAST)

Requirements
- 2-5 years of experience as a back-end developer
- Expertise with Java 1.8 and React JS
- Understanding of OOPS concepts, Design Principles, and implementations of different types of Design Patterns.
- Should have a strong acumen in Data Structures, Algorithms, problem-solving.
- Experience in Microservices
- Extensive experience in developing Web Services APIs using RESTful API design
- Comfortable writing Unit Test Cases
- Good to have experience/knowledge of
- Docker,
- Scala,
- Python, and
- AWS and other Cloud platforms
- Able to connect the dots between code and business value
Responsibilities
- Engage in high-level conversations about business strategy and the role tech plays in it
- Write well-designed, testable, and efficient code that powers our application
- Write specs and do planning for everything we build
- Conduct application analysis, testing, and debugging
- Diligently document code to keep it clean and transparent
- Ensure cross-browser and device compatibility
You Are
- You believe it’s always on you to make sure anything you do is a success.
- You have the ability to make quick and effective decisions.
- In love with a challenge. You revel in solving problems and want a job that pushes you out of your comfort zone.
- Open to change. You’re inspired by the endless ways in which everything we do can always be improved.

Proficient in Java, J2EE and related technologies.
• Experienced in using spring, Spring Boot, Hibernate, messaging systems.
• Good understanding of relational database performance concepts and usage of ORM frameworks such as Hibernate
• Expert understanding of the object-oriented design and programming concepts
• Strong working experience on Data Structures, Algorithms and Collections.
• Solid experience building applications on top of RESTful APIs.
• Knowledge/experience with Spring MVC
• Stroing knowledge in developing and executing automated unit, functional and integration tests
• Good communication and analytical skills.
• Strong trouble shooting skills

Minimum 5-7years of professional experience building web-applications
Strong experience in backend development
Strong experience in AI/Machine Learning development, Data Analysis/Processing
Experience in creating robust and secure REST APIs
Hands-on exposure to RDBMS like PostgreSQL, MySQL, MariaDB etc.
Proficiency with one or more programming languages from Java, Python, Node/JavaScript
Solid familiarity working with cloud and related technologies, AWS, GCP and Azure cloud environments
Ability to do very quick research in unknown technologies
Startup mindset, comfort with chaos and multi-tasking ability
Strong programming fundamentals in Data Structures, Algorithms
An eye for writing performance optimum code in any tool set

