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Application Development Engineer

Application Development Engineer

RS SoftwareKolkata, Republic Of India, IN
18 days ago
Job description

Job Description for Full stack Developer

Preferred Experience : 3-5 years

Work Location : Kolkata / India

About RS Software

RS Software builds global, national and enterprise payment platforms, and has presence in four continents. The product suite combines with knowledge systems built over 30 years, delivering mission-critical payment solutions that combine innovation and entrepreneurship to create the new gold standard for digital payments. With approximately 40% of the global digital payment volumes in 2021 processed on platforms built by RS Software, the vision is to deliver Payments at the Speed of Thought .

RS Software is focused on the global payments modernization market, providing large-scale, high-performance payment systems, serving central Infrastructures, financial institutions, payment network providers, payment processors and software companies providing products to the payment industry. The company's product suite offers ISO 20022 ready, open payments architecture using a cloud-based microservices framework - optimizing costs, seamless integrations with commoditized products, and accelerates the pace of adoption.

The company’s solutions today are installed in 12 of the top 20 banks in India, and the four major platforms built by RS Software cumulatively process annually 350+ billion transactions world-wide, giving the company a rare track record in the payments domain. RS Software’s product suite is getting recognized in some important markets, which is creating strategic partnerships, the foundation for the company’s long-term growth.

RS Software has bult India’s digital payment infrastructure, the three major payment platforms, which are transforming the lives of a billion+ people.

  • Instant digital payment platform (UPI)
  • Bill payment platform - Bharat Bill Payment System (BBPS)
  • Enterprise Fraud and Risk Management (EFRM)

Why RS Software?

  • RS provides a unique experience of engaging in some world class product development and prestigious large scale payment platforms that caters to billions of people
  • We provide opportunity to learn and develop high throughput transaction processing systems
  • RS Software is one of the few technology and payment solutions providers where talented individuals have the opportunity to work on cutting-edge, complex, and mission-critical IT projects. We offer ample career opportunities to hardworking and skilled employees.
  • Our Talent Management Program is specifically designed to identify the interests of each employee and match them with suitable career paths within their desired domains, allowing them to make the best possible use of their skillsets in reaching their goals.
  • We invest in the knowledge and skill development of our employees with RS School of Payments – the industry’s most comprehensive training platform. There are three main areas of focus that the Academy and School address : current technology skills, professional development and payments domain knowledge.
  • Our customized training program, well-defined career mapping process and comprehensive appraisal system is designed to help every employee achieve their goals.
  • To address the challenges of relocation, we offer employees coming from other regions reimbursement for expenses associated with their moves as well as complimentary interim facilities, such as guesthouse accommodations, to ease the transition. We also assist employees with finding suitable housing.
  • About the Role :

    As a Full Stack Developer for RS IntelliEdge™, our real-time fraud detection platform, you will be responsible for designing, developing, and optimizing both backend services and frontend interfaces. You will work closely with cross-functional teams including UX, product, and data science to deliver secure, scalable, and high-performance applications that power fraud detection and digital payments.

    Key Responsibilities :

    Backend (Java & Spring Boot)

  • Design, develop, and maintain scalable microservices using Core Java (17+) and Spring Boot .
  • Build and integrate REST APIs for seamless communication between services and frontend.
  • Implement multi-threading, data concurrency, and transaction management for high-volume fraud detection workloads.
  • Manage data persistence with JDBC, JPA, and RDBMS (complex SQL queries, CTEs, window functions).
  • Integrate with Kafka, Redis, NoSQL (Cassandra) for event streaming and caching.
  • Collaborate with data science teams to integrate ML models into backend workflows.
  • Optimize performance for real-time payment processing and fraud scoring.
  • Frontend (Angular & UI Development)

  • Develop responsive UI components using Angular 18+, TypeScript, HTML5, CSS3 / SCSS .
  • Integrate frontend with backend REST APIs for real-time data visualization and case management.
  • Work with UX designers to transform wireframes into intuitive, functional interfaces.
  • Ensure cross-browser compatibility and responsive design .
  • Write unit tests with Jasmine, Karma, or Jest to maintain code quality.
  • Build dashboards to monitor fraud patterns, alerts, and system performance.
  • Required Skills :

  • 5–9 years of experience as a software developer (Java + Angular).
  • Strong proficiency in Core Java (OOP, Functional Programming, Streams, Lambdas).
  • Expertise in Spring Boot, Spring Cloud, microservices, and REST API development.
  • Hands-on experience with Angular 18 for UI development.
  • Strong SQL skills with RDBMS queries;
  • experience with NoSQL databases is a plus.

  • Familiarity with Kafka, Redis, Docker, Kubernetes, Git, Maven / Gradle, JIRA.
  • Experience with CI / CD pipelines and cloud deployment strategies.
  • Strong understanding of fraud detection, risk analytics, or real-time payment systems (preferred).
  • Excellent communication and collaboration skills.
  • Good to Have :

  • Experience integrating machine learning models into production-grade systems.
  • Exposure to financial services or fraud detection platforms .
  • Knowledge of security best practices in web and API development.
  • Familiarity with Generative AI (Gen AI) tools to improve developer workflows
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    Application Development Engineer • Kolkata, Republic Of India, IN

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