Java Developer at Card91 · Bengaluru (Bangalore) · 2 - 5 years · ₹15L - ₹30L / yr (ESOP available) · Raised funding · Posted 24 Aug 2021

Card91 is simplifying business payments by providing a plug and play issuance infrastructure
to businesses for domestic and cross-border payments. Our full stack platform enables
businesses to gain control and visibility into their payment flows, controlling the entire payment
lifecycle from onboarding, to issuance, to transaction and data reconciliation. The platform
aims to provide holistic solutions around payment issuance and distribution management. Our
deep focus in payments will help us in bringing new issuance formats as well as technologies
to businesses.
The company has been founded by seasoned technology entrepreneurs who have founded
successful companies like Myntra, Mastiff Technologies earlier. Headquartered in Bangalore,
with presence in Mumbai and NCR, Card91 aims to disrupt the payment infrastructure space
in the issuer-processor segment.
Position: Java Developers
We are building our core team which will be responsible for a highly scalable, always available
microservices based backend for payment processing. The developer will be involved with the
design, implementation, and execution from day one and build a robust, secure, and scalable
payment processing engine.
Roles & Responsibilities
● Individual Contributors talking full ownership of the micro services
● Design and Implement the micro services from scratch
● Be creative and always try to evaluate new strategies to execute faster
● Team player and always eager to teach new team members about the code, structure
and design
● Not afraid of bringing new designs (even languages) which will make the system
execute faster
Experience and Qualifications
● Having 2 - 5 years of experience
● Degree from a premier institute like IIT/NIT/BITS is desirable
● A strong expertise in Java/Spring/Spring Boot/Hibernate/Java
● Experience in developing highly scalable and reliable web applications, including
integration with internal and external systems.
● Experience building web services in REST with technologies like Spring Boot, Spring-
WS, spring MVC or JAX-RS
● Should be able to write test cases (unit and functional) to cover most of the code
● Experience in databases like MySQL and NoSQL db like Cassandra, etc.
● Experience with Cloud computing AWS & Microservices architecture
● Exposure to front end technologies like VueJS, ReactJS etc is an advantage
● Knowledge on Redis, ELK stack or Temporal BPM is a big plus
● Docker & Kubernetes experience is a big plus
● Previous experience of Fintech company is an added advantage
What’s on offer
● Vibrant, fun and rewarding culture that nurtures and promotes excellence
● Opportunities to learn and interact with payment industry leaders
● Competitive remuneration, group health insurance & PF
● Other office perks of being part of an early-stage Start-up
● Location: HSR Layout, Bangalore

About Card91
About
Connect with the team
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- - Strong architecture and design skills and keen business sense.
- - Strong core server-side technologies experience (Java), database design & performance tuning exposure.
- - Strong OO design skills, knowledge of frameworks such as Spring/ Spring Boot/ exposure to functional programming a plus.
- - Good knowledge of nodeJS/ noSQL a definite plus.
- - Good exposure to front end/UI skills (JS, HTML, Angular).
- - Good exposure to configuration management, testing, deployment.
- - Deep knowhow of data structures, algorithms.
- - Hands on development across technologies
- Excellent programming in Core Java, Multi-threading.
- Java technologies: Core Java, Java EE/J2EE, JPA/Hibernate, Spring
- Should have good understanding on design patterns.
- Should have minimum 1 yr exp in spring boot / Microservices / Amazon Web Services.
- Should have experience developing RESTful services along with Spring and Hibernate
- Good exposure & experience in Product development.
- Ability to collaborate with Architects on development and design.
- Up to date with technology trends and be able to set direction for other developers.
- Ability to evaluate and build POCs, make recommendations around Java, DevOPs, Mobility and Cloud related technologies.
Technical Skills :
- Microservices, Spring Boot, HIbernate, REST
- Redis, MongoDB, MySQL
- DevOps - CI/CD, Ansible/Docker/Kubernetes.
- Cloud - AWS/Google
Job Description:
We are seeking an experienced Java Back-end Developer to join our team. The ideal candidate
will be responsible for designing, developing, and maintaining robust and scalable back-end
solutions using Java and related technologies. The Back-end Developer will work closely with
cross-functional teams to deliver high-quality software solutions that meet our business needs.
Responsibilities:
Design, develop, and maintain Java-based back-end applications, services, and APIs.
Write efficient, reusable, and well-documented code following industry best practices
and coding standards.
Collaborate with front-end developers, product managers, and other stakeholders to
understand requirements and translate them into technical solutions.
Implement and maintain database schemas, write complex SQL queries, and optimize
database performance using Oracle SQL.
Develop and consume RESTful web services to enable seamless integration with
external systems.
Utilize Spring framework and its various modules (e.g., Spring Boot, Spring Batch) for
building enterprise-level applications.
Manage project dependencies and build processes using Maven.
Work with version control systems such as Git for code management and collaboration.
Perform unit testing, integration testing, and debugging to ensure the quality and
reliability of back-end components.
Stay updated on emerging technologies, trends, and best practices in back-end
development.
Additional Requirements:
Strong knowledge of application servers such as Tomcat and WebLogic.
Experience with continuous integration tools such as Jenkins.
Familiarity with automated testing frameworks such as JUnit.
Understanding of authentication and authorization mechanisms, including OAuth.
Knowledge of SOAP web services and related technologies.
Requirements:
Bachelor's degree in Computer Science, Engineering, or a related field.
5 Plus years of experience in Java back-end development.
Proficiency in Java programming language and related frameworks (e.g., Spring, Spring
Boot, Spring Batch).
Strong understanding of object-oriented programming principles, data structures, and
algorithms.
Experience with Oracle SQL and database design principles.
Familiarity with RESTful web services and API development.
Experience with build tools such as Maven.
Knowledge of version control systems, particularly Git.
Strong problem-solving skills and attention to detail.
Excellent communication and collaboration skills.
Ability to work effectively in a fast-paced, agile environment.
Preferred Qualifications:
Experience with other databases such as MySQL, PostgreSQL, or MongoDB.
Familiarity with continuous integration/continuous deployment (CI/CD) pipelines.
Understanding of software development best practices and design patterns.
Job description
JD - Java Developer (Backend Developer)
Technical Requirement:
- At least 5 years of experience in Java, J2EE technologies.
- Expertise in doing development using Java, Spring Boot, Spring modules (Spring Security, Spring MVC, Spring Data JPA, etc.), Hibernate, Web Services
- Worked on REST web services.
- Worked on application server : Tomcat
- Worked on Eclipse IDE
- Knowledge of Swagger, Postman
- Worked on Database like MySQL
- Worked on Git, Maven, CI/CD pipelines
- Good to have knowledge of using Docker and Mongo DB
Overall Roles & responsibilities:
- Consult with client team to understand business requirements and with solution architects / team lead to understand the application architecture.
- Develop/code applications following specifications using the appropriate tools and adhering to the standard coding standards.
- Coordinate unit testing, integration testing and bug fixing with the development and quality assurance team.
- Plan for defect fixes as per priority and severity mentioned by QA team.
- J Attend daily scrum meeting with entire team and client.
Are you an experienced, ambitious Software Developer looking for a challenging role where you can learn and grow a lot more?
We are looking for motivated technical leads with skills in PHP-based frameworks to come to join our fast-paced, fun, and rewarding agile team of professionals.
If you are passionate about technology, constantly seeking to learn and improve your skillset, then you are the type of person we are looking for!
We are offering superb career growth opportunities, great compensation, and benefits.Responsibilities:
- Technical Leads to provide solutions to technical issues, and are responsible for meeting development schedules and ensuring the delivered solution meets the technical specifications and design requirements
- Determining project requirements and developing work schedules for the team.
- Delegating tasks and achieving daily, weekly, and monthly goals.
- Liaising with team members, management, and clients to ensure projects are completed to standard..
- Analyzing existing operations and scheduling training sessions and meetings to discuss improvements.
- Keeping up-to-date with industry trends and developments.
- Updating work schedules and performing troubleshooting as required.
- Writing progress reports and delivering presentations to the relevant stakeholders.
- Framework Conduct peer-reviews and lead reviews and provide feedback.
- Develop, maintain, troubleshoot, enhance and document
Requirements:
- 6+ Years of IT industry experience
- Sound knowledge of PHP Based frameworks (Word press, Laravel, Drupal, Codeigniter JavaScript, HTML, CSS
- Ability to manage multiple projects and juggle priorities
- Hands-on experience with SQL/MySQL schema design, SOLID principles, REST API design
- Sound knowledge of estimation technique & design patterns
- Excellent technical, diagnostic, and troubleshooting skills
- Excellent communication, motivational, and interpersonal skills
Perks & Benefits: - Work from home/hybrid
- 5 days working
- Leave compensations
- Flexible working hours
- Exposure to the international market
- Medical Insurance
Required Skill:
• Good hands-on experience with Java and JEE
• Good hands-on experience with Microservices
• Good experience in UI frameworks (HTML, Java Script, HTML5, JSP, Ajax)
• Good understanding of Spring, Spring boot, Spring Integration
• Good experience with service oriented architecture and REST, JSON, XML, SOAP
• Good experience with any Directory technology LDAP
• Good Experience with a relational database like Oracle
• Experience working with Agile Methodology
• Experience in using RTC, code quality tools, defect tracking tools
• Good experience with code reviews
• Excellent team player with good organizational, communicational, analytical and logical skills.
• Good understanding of the web browsers and web applications
Desired Skills:
• Good experience with Ping product like PingAccess and Ping Federate
• Apache Camel
Responsibilities :
- Developer responsibilities include, but are not limited to the following:
- Experience as a Sun Certified Java Developer with proven hands-on Software Development experience. We use Java 8
- 4-10 years java development experience with JSE/JEE, Java-based Micro-services framework, and implementation, Spring framework, Hibernate framework, SQL, etc
- Hands-on experience on Spring boot & SPARK Microservices and OSGi specifications
- Strong knowledge of micro-service logging, monitoring, debugging, and testing
- Implementations experience of micro-service integration, packaging, building automation, and deployment
- At least two years experience in SOA & Microservices based process applications using BPM (Activiti/JBPM/Camunda)
- Object-Oriented Analysis and design using common design patterns.
- Insight of Java and JEE internals (Classloading, Memory Management, Transaction management, etc)
- Excellent knowledge of Relational Databases, SQL, and ORM technologies (JPA2, Hibernate)
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC, Spring Boot)
Qualifications: BS/MS degree in Computer Science, Engineering or a related subject and a minimum of 8 years of professional work experience in a mid-d or large corporate Information Technology environment. Highly organized and detail-oriented, with the ability to keep multiple projects and client engagements active at once. Comfort with ambiguity and ability to navigate uncertainty.
Who are we looking for?
A passionate developer
What’s non-negotiable?
- Strong working knowledge of OOPS
- Functional programming principles
- Strong believer of Clean Code practices
- An advocate of TDD, BDD, SOLID, CI/CD, Lean development
You’ll easily settle in if:
You come from a strong Java/J2EE background with web application frameworks like Spring Boot or Drop wizard
You have ample work experience in Caching, Multi-Threading, Asynchronous APIs, Exception Management and use of collections, Mocking, Unit testing tools like Junit & TestNG"
You are fluent with version control tools like GIT and Bitbucket
Experience with Continuous Integration, Continuous Deployment, Static Code Analysis, Jenkins and SonarQube
Willingness to take ownership of the technical solution and ensure technical expectations of deliverables are met.
Exposure to AWS/Azure cloud and containerization
Have a good Understanding of Distributed Application Architecture.
You ‘ll love:
Awesome opportunity to work with Micro Services architecture getting shipped on Cloud.
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First-hand experience on broader enterprise application concerns like Message Bus, Queues, Caches, Concurrency and Parallelization








