
We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well.
Responsibilities
- Integration of user-facing elements developed by front-end developers with server side logic
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Implementation of security and data protection
- Creating APIs and backend systems
- Scraping sites and creating backend dashboards for data management
- Experience with React.js and native is a plus but not required
- Backend infrastructure management and deployment
- Experience with MongoDB, Express is a plus.

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Role Overview
We are looking for a Senior Full Stack Developer to build and scale our fintech platform. You will own the entire lifecycle of our financial products, from designing high-performance relational schemas in PostgreSQL to building interactive dashboards in React.
Key Responsibilities
• Full Stack Development: Build and maintain end-to-end features using the PERN stack
(PostgreSQL, Express.js, React, Node.js).
• Database Optimization: Design complex relational models and optimize SQL queries to
handle high-volume financial data and audit trails.
• Security & Compliance: Implement rigorous security measures (e.g., JWT, OAuth, data
encryption) and ensure the platform adheres to fintech standards like PCI-DSS.
• API Architecture: Develop robust RESTful APIs to integrate with third-party banking APIs,
payment processors (Stripe/Plaid), and KYC providers.
Technical Requirements
• Front-end: Advanced proficiency in React.js (Hooks, Context API, Redux or TanStack Query)
and modern CSS (Tailwind/Styled Components).
• Back-end: Expert-level Node.js and Express.js experience, with a focus on asynchronous
programming and secure API design.
• Database: Deep knowledge of PostgreSQL (complex joins, indexing, triggers, and
migrations).
Additional skills
• Understanding of Event-Driven Architecture (using AWS SQS/SNS or Kafka).
• Familiarity with SOC2 or ISO 27001 compliance frameworks.
• Cloud (AWS): Proven experience with:
- RDS/Aurora for managed databases.
- IAM for secure access management.
- AWS Lambda & API Gateway for serverless architecture.
- CloudWatch for monitoring and alerting.
• Tools: Git, Docker, and experience with CI/CD workflows.
About US
RJ Fintech Solutions Pvt. Ltd. is a high-growth fintech startup on a mission to automate business financial operations. In a world where financial systems are often slow and opaque, we are building the "missing link"—a secure, transparent, and lightning-fast platform that puts banking and compliance first for various corporates.
We are not just another financial app; we are an engineering-first company. We believe that elegant code and robust architecture are the foundations of trust. By leveraging the PERN stack and AWS cloud-native infrastructure, we are replacing legacy complexity with modern, scalable solutions.
Why Work With Us?
1. Build the Foundation, Not Just Features
You won't be a small cog in a massive machine. As an early member of our engineering team, you will help define our technical architecture, choose our libraries, and set the coding standards for everyone who follows. Your fingerprints will be on the core DNA of our product.
2. Solve Problems That Matter
Fintech is one of the few industries where code has a direct, measurable impact on people's lives.
Whether we are [e.g., simplifying cross-border payments, democratizing investment, or building the next generation of credit], you will be solving high-stakes challenges around security, trust, and financial inclusion.
We're seeking a talented and motivated Full Stack Developer who is experienced in Node.js, React.js, and Laravel (PHP) to work on building high-performance web applications, APIs, SaaS platforms, and hosting tools. This role is perfect for someone who thrives in a dynamic environment and wants to contribute to modern, scalable platforms used by thousands of users.
Responsibilities
Develop and maintain full-stack applications using Node.js (backend), React.js (frontend), and Laravel (backend).
Design, implement, and document APIs and microservices for internal and customer-facing platforms.
Integrate third-party APIs, payment gateways, and other services as needed.
Collaborate with UI/UX designers to ensure a high-quality user experience.
Optimize applications for maximum speed and scalability.
Troubleshoot, debug, and upgrade existing software.
Participate in code reviews, sprint planning, and team meetings.
As a Full Stack Developer, you will develop applications in a very passionate environment being responsible for Front-end and Back-end development. You will perform development and day-to-day maintenance on large applications. You have multiple opportunities to work on cross-system single-page applications.
Required Skills
- ASP.net (Web API), Entity Framework 6, C# (.NET 4.5),
- MYSQL
- Javascript (experienced writing modular, object-oriented Javascript)
- Knowledge with jQuery, AngularJS libraries
- E Knowledge with RESTful web services HTML5, CSS3, BootStrap 3 of multiple design patterns
- Experience Wth Git based version control
- Minimum 2+ years developing production JavaScript code and strong knowledge of React.JS










