Senior Engineer - Full Stack

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 are looking for a Full Stack Developer responsible for developing and maintaining web applications across frontend and backend.

Key Responsibilities:

• Develop responsive web applications and REST APIs.
• Work with frontend frameworks such as React/Angular.
• Develop backend services using Node.js/Java/.NET/Python.
• Work with SQL/NoSQL databases.
• Write clean, scalable, and secure code.
• Debug issues, perform testing, and optimize application performance.
• Collaborate with development, QA, and product teams.

Required Skills: JavaScript/TypeScript, React/Angular, backend development, REST APIs, SQL/NoSQL, Git, and basic cloud/DevOps knowledge.

About the Job -

We have always been in the spotlight for being adeptin “the next big technologies”. What we can offer you is a space to explore varied technologies and quench your techie soul. We are looking for Developer skilled in technologieslike Node.js and AWS who also holds experience with user-interface design.

Responsibilities: ● The full stack developer will be responsible for design and development of scalable and flexible web applications and creating API to connect to databases and applications from back-end to client-side code, using optimal and efficient technologies, frameworks, and patterns.

● Take responsibility for design, implementation and maintain existing development ecosystem, including bugs – fixing, design and develop new custom components to meet project requirements.

● Working with other developers and software engineers to develop front-end and back-end architecture that's well-structured and flexible, along with the APIs to support it.

● Install and configure server environments for React deployments maintain and update project dependencies as well as fix any conflicts.

● Responsible for regular communication with developer team involved in the development process and testing of new features in the application

● Analyzing requirements and designing new functionality for new projects with cutting edge technology with research on optimization and new features for the existing product by ensuring a required level of performance.

● Candidate must be abreast with latest technologies and trends, relevant standards should be able to work effectively in a multidisciplinary, multinational team environment focused on innovation with comfortable working on a range of problems.

Desired Competencies(Technical/Behavioral Competency) – Must Have-

● Nodejs, MongoDB, Socket.IO and Redis.

● Proficient in Node.js and MongoDB and working knowledge of JavaScript, JQuery, HTML, CSS, frameworks (Angular.js, React.js)

● Experience with Unix/Linux or Windows and/or Mac environments, distributed systems

● Excellent practical knowledge of OOP concepts and SOLID principles ● Microservices and agile development

● Hands-on experience with cloud (AWS) development/hosting.

● Experience with Web services development (SOAP, REST)

● Strong in Object Oriented Programming, MVC, Design patterns and SOLID principles. 

Skills Required: 

• Node.js
• MongoDB
• Angular
•  API optimization  
• Micro Services
• Multi threading
• Socket.io

What we need:

•        Experience in both Web + Mobile development

•        Strong understanding of APIs & system design

•        Ability to build end-to-end features

·      Maintain version control and documentation using Git / GitHub.

Roles and Responsibilities

• Design and develop responsive web applications using React.js / Next.js.
• Build and maintain scalable RESTful APIs using Node.js and Express.js.
• Implement user authentication and authorization using JWT / OAuth2.
• Manage and optimize database structures using MongoDB or MySQL.
• Integrate front-end and back-end components seamlessly for smooth user experience.
• Collaborate with UI/UX designers and product teams to deliver high-quality features.
• Participate in Agile / Scrum sprints, daily stand-ups, and code reviews.
• Optimize applications for speed, performance, and security.
• Maintain version control and documentation using Git / GitHub.

Troubleshoot and debug production issues efficiently.

Job Location- Bangalore,

Candidates from Tamil Nadu willing to relocate to Bangalore can also apply.

Role Overview

We are seeking a skilled Full Stack Developer with 4–6 years of hands-on experience in developing modern web applications using React.js and Node.js. The ideal candidate should be capable of independently developing application features, integrating backend services, and contributing to scalable, secure, and high-quality enterprise applications.

The candidate should also be comfortable using AI-assisted software development tools to improve development productivity, code quality, testing, and documentation while adhering to engineering best practices.

Key Responsibilities

·       Develop and maintain frontend applications using React.js.

·       Build backend services and RESTful APIs using Node.js and Express.js.

·       Design, write, and optimize SQL queries and database objects in PostgreSQL.

·       Implement asynchronous communication using RabbitMQ.

·       Create and manage database schema changes using Liquibase.

·       Zustand for state management

·       Implement secure handling of application secrets using OpenBao.

·       Develop reusable, maintainable, and well-documented code.

·       Debug, troubleshoot, and resolve application issues.

·       Write unit tests and support integration testing activities.

·       Collaborate with architects, senior developers, QA engineers, and product teams.

·       Participate in Agile ceremonies.

·       Support production deployments and issue resolution.

AI Development Expectations

·       Use AI-assisted coding tools such as GitHub Copilot, Cursor, Claude Code, or similar.

·       Use AI for code generation, refactoring, documentation, testing, and debugging.

·       Review and validate AI-generated code before deployment.

·       Follow responsible AI usage and secure software development practices.

Required Technical Skills

Frontend: React.js, JavaScript (ES6+), HTML5, CSS3, Responsive UI, Redux/Context API

Backend: Node.js, Express.js, REST APIs, JWT/OAuth

Database: PostgreSQL, SQL development, Database fundamentals

Messaging: RabbitMQ, Event-driven communication

Database Migration: Liquibase

Security: OpenBao, Secure coding, API security

Development Practices: Git, CI/CD, Docker basics, Unit Testing, Agile/Scrum, Clean Code

Preferred Qualifications

·       Experience working on enterprise web applications.

·       Exposure to microservices-based architectures.

·       Familiarity with Docker and Kubernetes.

·       Experience integrating third-party APIs.

·       Basic understanding of application monitoring and logging.

·       Exposure to cloud platforms.

Soft Skills

·       Analytical and problem-solving skills.

·       Strong communication and teamwork.

·       Ability to work independently.

·       Willingness to learn new technologies.

·       Ownership and accountability.

·       Adaptability in Agile environments.

Education

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related discipline.

What We're Looking For

We are looking for a motivated Full Stack Developer who can quickly become productive in an Agile team and contribute to the successful delivery of the Project while embracing AI-assisted development practices.

We are looking for a Full Stack Developer to join our engineering team and help build, improve and scale LabStack's healthcare technology platform. You will work across the frontend, backend, APIs, databases and integrations, turning product requirements into reliable, production-ready features.

Position: Full Stack Developer (React.js + Node.js)

Experience: 2–5 Years

Location: Mumbai – Chembur West (Onsite)

Job Summary

We are looking for a Full Stack Developer with strong hands-on experience in React.js and Node.js to build scalable, secure, and high-performance web applications. The ideal candidate should be comfortable owning features end-to-end, developing responsive UI, building REST APIs, integrating databases, and supporting production systems.

Key Responsibilities

• Build responsive UI using React.js, HTML5, CSS3, JavaScript (ES6+)
• Develop scalable backend services and RESTful APIs using Node.js (Express.js / NestJS)
• Work with MongoDB and MySQL (schema design, indexing, query optimization)
• Implement authentication & authorization using JWT , RBAC , Oauth
• Integrate third-party APIs, Webhooks
• Build real-time features using Socket.io / WebSockets
• Ensure performance, scalability, and security (validation, sanitization)
• Implement caching using Redis (if applicable) and optimize API response times
• Support API testing (Postman/Supertest)
• Maintain API documentation using Swagger / OpenAPI
• Debug and resolve defects, handle RCA, and support production troubleshooting with logs/monitoring
• Follow Git-based workflows, participate in code reviews, and collaborate with QA/product teams in Agile delivery

Mandatory Skills

• React.js, Node.js, JavaScript (ES6+)
• MongoDB (must), MySQL
• REST API development & integration
• Socket.io / WebSockets, Webhooks
• HTML5, CSS3
• Git
• Typescript, Express.js / NestJS
• jQuery / AJAX (basic / legacy support)

Good to Have

• Redis, Swagger/OpenAPI
• Docker, CI/CD (GitHub Actions/Jenkins)
• Cloud exposure (AWS/Azure/GCP)

Qualification

BE / BTech / MCA / MSc IT / BSc IT with 2–5 years relevant experience.

CTC: As per industry std.

Click "Apply Now" in https://gosuperedtech.com/career/junior-fullstack-developer to apply

Role Overview

We are looking for a Junior Full Stack Developer who is eager to kickstart their career in software development. This role offers a fantastic opportunity to grow by working closely with experienced engineers on real product features that impact thousands of learners.

You will develop your skills by contributing to both frontend and backend codebases, primarily using React for building user interfaces and Node.js for backend services.

This role is ideal if you’re passionate about coding, curious about product development, and excited to learn modern technologies while solving meaningful problems.

What You’ll Do

• Write clean, maintainable, and well-tested frontend code using React
• Support backend development and API integrations with Node.js(Express or NestJS)
• Help build responsive, accessible, and performant web and mobile interfaces
• Collaborate with product managers, designers, and senior engineers to understand requirements and deliver features
• Participate in daily standups, sprint planning, and team meetings
• Assist in troubleshooting and debugging issues across the stack
• Learn and apply best practices for version control (Git), CI/CD pipelines, and deployment workflows
• Contribute to code reviews and continuous improvement of code quality
• Continuously improve your skills through feedback, learning sessions, and hands-on experience

What We’re Looking For

• Strong fundamentals in JavaScript and TypeScript
• Proficiency with React — understanding components, state, props, and lifecycle
• Basic experience or knowledge of Node.js backend development
• Understanding of RESTful APIs and how to consume them
• Eager to learn new tools, frameworks, and technologies
• Ability to work well in a collaborative team environment
• Good communication skills to discuss ideas and challenges openly
• Problem-solving mindset and willingness to take ownership of your work

Nice to Have (Not Mandatory)

• Familiarity with Next.js or server-side rendering frameworks
• Exposure to React Native for mobile app development
• Basic understanding of databases like PostgreSQL, MongoDB, or Redis
• Experience with Git or other version control systems
• Personal or academic projects demonstrating your coding abilities
• Internship experience or contributions to open-source projects

What You’ll Gain

• Hands-on experience building Full Stack SaaS products in a real startup environment
• Mentorship from senior engineers and leaders passionate about teaching and growth
• Exposure to cloud infrastructure, DevOps practices, and scalable system design
• Opportunity to contribute to product decisions and see your work impact actual users
• Learning culture that encourages experimentation, feedback, and continuous improvement
• Access to Cult Elite and Cult Play Pass, offering wellness and lifestyle benefits to keep you energized and inspired

Compensation

• Competitive salary with performance-based bonuses
• Equity (ESOPs) – own a piece of the company you help build
• Flexible remote work options with occasional Bengaluru office meetups
• Health and wellness perks, including Cult Elite membership and Cult Play Pass for employees
• Learning & development budget to support your growth
• Team retreats, virtual hangouts, and a collaborative culture

We are looking for a Junior Full Stack Developer who is eager to kickstart their career in software development. This role offers a fantastic opportunity to grow by working closely with experienced engineers on real product features that impact thousands of learners. Click "Apply Now" in https://gosuperedtech.com/career/junior-fullstack-developer to apply

About the Role

We are looking for a Full Stack Developer with hands-on experience in React and Node.js/NestJS to develop and maintain end-to-end web applications in a modern microservices environment.

Key Skills

• Strong knowledge of JavaScript & TypeScript
• Hands-on experience with React.js, Hooks & State Management
• Experience with Node.js, Express.js and/or NestJS
• Good understanding of REST APIs
• Working knowledge of PostgreSQL & MongoDB
• Experience with Git
• Basic understanding of AWS, Docker & Microservices will be an advantage

Responsibilities

• Develop responsive React-based front-end applications
• Build and integrate REST APIs using Node.js/NestJS
• Work with PostgreSQL and MongoDB databases
• Develop and maintain microservices
• Debug, test and optimize applications
• Participate in code reviews and team collaboration
• Support application deployment and monitoring on AWS

Preferred

AWS | Docker | CI/CD | Java/Spring Boot | Redis | Message Queues

Qualification: Bachelor's degree in CS/IT or equivalent practical experience.

Responsibilities:

* Collaborate with cross-functional teams on project requirements and deliverables

* Develop user interfaces using React.JS and Express API's

* Implement database solutions with MongoDB and Node.JS