Sr Full Stack Developer MERN/PERN

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.

At Shipthis, we work to build a better future and make meaningful changes in the freight forwarding industry. Our team members aren't just employees. We are comprised of bright, skilled professionals with a single straightforward goal—to Evolve Freight forwarders towards Digitalized operations, enhance efficiency, and drive lasting change.

As a company, we're just the right size for every person to take initiative and make things happen. Join us in reshaping the future of logistics and be part of a journey where your contributions make a tangible difference.

Learn more at www.shipthis.co

JOB DESCRIPTION

What you’ll be doing:

• Take ownership of building and scaling intuitive, high-performance UIs that directly impact the lives of our users.
• Collaborate closely with product, design, and backend teams to shape and deliver features that drive meaningful change.
• Embrace a "startup mindset" by taking the initiative, wearing multiple hats, and solving challenges with creative, scalable solutions.
• Actively contribute to the product vision and roadmap, ensuring the front end evolves with the company’s growth.
• Build for the long haul by writing clean, maintainable, scalable code supporting future features and expansions.
• Mentor team members, fostering a culture of continuous learning and improvement, and helping grow a high-performing engineering team.
• Stay ahead of the curve by experimenting with new tools, frameworks, and best practices, ensuring the product remains cutting-edge.
• Take pride in not just coding but in truly building—crafting features and solutions that users love and stand the test of time.
• Be part of a team that values collaboration, ownership, and long-term impact over short-term wins.

While our current stack includes Angular and Python, we’re flexible and open to leveraging any tech stack that best suits our product’s needs.

Desired qualifications include:

• Bachelor's/Master's degree in Computer Science, Engineering, or a related field.
• 3–5 years of professional experience in full-stack development, with a strong portfolio of successful projects.
• Proficiency in JavaScript and frameworks like Angular 12+, React, or similar.
• Strong understanding of web technologies including TypeScript, Python along Fast API.
• Strong knowledge of MongoDB is appreciated.
• Experience with state management libraries (e.g., NgRx, Redux).
• Strong problem-solving skills and the ability to learn and adapt quickly.
• Excellent communication skills with the ability to collaborate effectively in a team environment.

We welcome candidates:

• Who can join immediately.
• Female candidates returning to work after a career break are strongly encouraged to apply.

We are an equal opportunity employer and are committed to fostering diversity and inclusivity. We do not discriminate based on race, religion, color, gender, sexual orientation, age, marital status, or disability status.

JOB SYNOPSIS:

• Job Role: Full Stack Engineer
• Location: Bangalore
• Job type: Full-time, permanent
• Experience: 3–5 years
• Industry Type: Software Product
• Functional Area: Software Development

• Bachelor's degree in computer science or equivalent experience
• 2+ years of experience in software engineering.
• Experience with building B2B and consumer quality products, enabling business capability and objectives through technology.
• Strong cloud infrastructure experience with AWS.
• Experience in engineering practices such as code refactoring, design patterns, design driven development, continuous integration, building highly scalable applications and application security.
• Experience working with a development team using Agile methodology.
• Experience in container technologies like Docker/Kubernetes a plus.
• Hands-on skills working with SQL and No-SQL databases
  Broad experience across the following application development technologies and in depth skills with at least one: NodeJS, React, GraphQL,Python, R, Java/C++ and/or other open source application development frameworks.
• Ability to strategically balance test coverage, documentation and timelines (API/ Unit testing).
• Strong analytical and problem-solving skills paired with the ability to develop creative and efficient solutions.
• Able to work under competing priorities, manage expectations effectively and support the team under pressure; distinct user focus and quality mindset.

The ideal candidate will be responsible for developing high-quality applications. They will also be responsible for designing and implementing testable and scalable code.

Responsibilities

• Develop quality software and web applications
• Analyze and maintain existing software applications
• Design highly scalable, testable code
• Discover and fix programming bugs

Qualifications

• Bachelor's degree or equivalent experience in Computer Science or related field
• Development experience with programming languages Python, Javascript, NodeJS
• At least 2-3 years of experience in Python and React
• SQL database or relational database skills
• Strong understanding of the software development cycle
• Self-motivation and the ability to work under minimal supervision are a must
• Excellent oral and written communication skills to interact with all levels in the organization

What we are looking for?

• At least 3 years of experience of development on full-stack applications
• Experience with usage of NoSQL databases like MongoDB
• Familiarity with SQL and RDBMS Systems
• Experience in creating applications with NodeJS and MERN stack
• Experience with developing frontend interfaces using React framework
• Experience in creating responsive frontend applications
• Able to use versioning systems like Github or Gitlab
• Understanding of basic tools provided by AWS and their configuration
• Understanding of Unix bases operating systems, ability to configure them for optimum usage
• Experience in basic command-line utilities and shell scripting language
• Understanding of rest API implementation
• Ability to script quickly with Python for writing ad hoc jobs

What you will be working on?

• Leading a team of engineers
• Working on creating performant and fault-tolerant systems which are scalable
• Design, build and maintain high performance, reusable, and reliable Typescript code
• Effectively work with product to gather requirements, gain a deep understanding of use cases and business needs, and translate into design and implementation.
• Maintain code integrity and organization.
• Manage basic DevOps related to CI/CD
• Creating secure systems
• Lead other junior developers
• Define optimal and minimal architecture to achieve product requirements