Full Stack Developer (.NET / MVC)

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.

Location: Mumbai

Experience Required: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners

(Looking for Local Candidates of Mumbai)

About the Role

We are seeking a skilled and experienced Full Stack (MERN) Developer to join our product engineering team. The ideal candidate must have experience working in a product-based software development company and should have hands-on involvement in e-commerce platform projects.

Mandatory Criteria

• Candidate must be currently working or have prior experience in a product-based software development company
• Candidate must have worked on at least one e-commerce platform project (end-to-end involvement)

Key Responsibilities

• Develop and maintain scalable web applications using MongoDB, Express.js, React.js, and Node.js
• Translate UI/UX designs into high-quality front-end code
• Build and integrate RESTful APIs
• Ensure performance, quality, and responsiveness of applications
• Participate in design discussions, code reviews, and contribute to technical documentation
• Work in a collaborative, agile development environment

Required Skills

• Strong proficiency in JavaScript, React.js, Node.js, and Express.js
• Hands-on experience with MongoDB or other NoSQL databases
• Solid understanding of RESTful APIs and architectural patterns
• Knowledge of version control systems like Git
• Understanding of CI/CD and cloud-based deployment practices
• Good grasp of performance optimization, caching, and security practices

ROLE SUMMARY:

We are seeking a highly skilled and experienced SDE II .NET Engineer to join our team. As a member of our team, you will work closely with our development team to design, develop and implement software solutions using the .NET framework and related technologies.

QUALIFICATION:

• Excellent academic record – B.E./B.Tech IT, CSE/ MCA
• 3 to 6 years of relevant software development experience with .NET technologies and frontend - Angular 2+/React.js
• Hands-on experience in C#, ASP.NET Web APIs, SQL Server Database with Entity Framework
• Hands-on experience with Angular 2+ or React.js
• Hands-on experience with RESTful Web API
• Hands-on experience in LINQ, Asynchronous programming
• Good understanding of OOPS concepts
• Good Knowledge of JavaScript and JavaScript frameworks
• Experience in integrating different 3rd party APIs (eg. Google Maps, Facebook etc.)
• Good knowledge of GIT
• Good to have: Node.Js, MongoDB, Gulp, Webpack, Azure, AWS, Docker

COMPETENCIES:

● Excellent verbal and written communication

● Willingness to learn and develop your skill set

● Works well within a team environment

● Logical thinker with good problem-solving and analytical skills

● Willingness to get to the root of the problem

● Proactive can do and can think the approach to the job

Professional development experience, working the Full stack on large scale B2B, SaaS products. • Expertise with learning new technologies and strong experience with our tech stack AngularJS, JavaScript, Node.js, Go, React.js and Postgres. • Bachelor’sin Computer Scienceorsolid knowledgeof CS fundamentals(OOP, designpatterns, algorithms, etc...) • Experience and adesire towork in a fast-paced environment. • We are a leading cloud-based open platform used by some of the most prestigious companies around • You will get to work with some of the most complex technologies on the market today • You will have an opportunity to work at all levels of the organization.

Our growing software technology business is looking for a Mid Level Full Stack Developer to join our Development Team. We're looking for a talented, team-oriented, highly motivated, smart individual with a passion for software engineering, a strong desire to learn and an interest in providing mentorship to peers. We desire self-starting developers with strong experience developing sophisticated web applications leveraging the latest technologies. The successful candidate for this role must be an outstanding problem-solver with great database and software architectural skills.

KEY REQUIRED SKILLS

• Node.js
• GIT
• MySQL

POSITION DESCRIPTION

We have an immediate need for a highly motivated Mid Level Node Software Developer to provide software development expertise and hands on implementation using the latest open source server-side JavaScript technologies on the Node platform and other related open source products.

REQUIRED

• Strong software development experience with Node.js in addition to detailed understanding of user interface frameworks, back-end software architecture interactions and node module capabilities.
• One or more years' experience with one or more JavaScript frameworks/technologies such as Express.js, Angular.js, React.js, MobX or Flux.js.
• Strong development experience using Node.js.
• Strong communication and collaborative skills
• Portfolio of application(s)

DESIRED SKILLS

• Experience with HTML5, CSS3.
• Experience with source code versioning and Pull Requests with Git repositories.
• Standards & Protocols knowledge including JSON.
• Complex programming, program debugging, automated program testing, data analysis, problem analysis and resolution of issues within open source applications.
• Experience in other languages such as .net, including VB and C# are a plus
• Operating System and Infrastructure experience with Ubuntu Linux and Windows Server.

EDUCATION

• Bachelor’s degree from an accredited college in a related discipline, with minimum 2-3 years of relevant professional experience.
• Exact skill match may allow flexibility with education and experience requirements
  • Certifications are a plus.

Job Description

We are looking for a talented Magento 1 and 2 developer that will oversee maintaining our

eCommerce website. Your main tasks will be to ensure that the last security patches are installed and that existing functionality continues to work properly. You will also oversee developing new modules and applying any required front-end changes.

What we expect from you?

Good experience in eCommerce development

Strong debugging skills, Code flow analysis, and the ability to read and modify existing

code.

Good knowledge of Payment gateway integration

Shopify experience will be a big plus.

2+ years of work experience.

Strong problem-solving and troubleshooting skills.

Good communication and Learning attitude.

Strong object-oriented programming knowledge

Very good PHP knowledge

JavaScript is a must for front-end development

Extensive LESS & CSS knowledge

Magento certification is a big plus

What you will get to work on?

Create responsive sections as per the requirement given to you.

Bug fixing, testing, and maintenance of the site.

Data entry work is also included

Regularly update our Magento installation

Install security patches

Develop new functionality

Implement front-end changes.
For more details dial - nine/one/zero/one/four/double three/eight/one/two.

Who should not apply for this job

• If you are looking for a 100% hike in your salary but can't commit to what value you will bring on the table
• If you never read books
• If you jump companies every 11-12 months
• If you are not comfortable working on Saturdays
• If you have less than 2 years of experience
• If you have more than 4 years of experience

At this position you will:

• Get solid experience with high-load distributed architecture using REST and High load services.
• Work with automated CI/CD processes, AWS cloud, and VoIP.
• Implement and support microservices based on Elasticsearch, Mongo, and frontend.

Key-Skills Required:

Node.js  | Express  | REST Api   | Javascript  | Redux-Saga |   MongoDB | Web security TLS/SSL | Web Sockets |   Promises & Call-backs | Database & Data structures |   Redis | Elasticseach | React.Js

Key Deliverables: 

• New feature design and implementation, Bug fixing, testing and performance tuning.
• Work on the API and Engines.
• Code deployment on cloud & maintenance of the same.
• Take complete ownership of a product/feature from setup to deployment.
• Time-bound feature delivery & updating.
• Cost-saving using efficient & effective technologies

Role and Responsibilities: 

• Work on back-end (+ frontend integration) development of core scripts using NodeJS / MongoDB /Express /Redux, and Redis.
• Manage Key-value based databases like Redis.
• Active participation in the development of a sophisticated platform as one of the leading developers.
• Document code consistently throughout the development process by listing a description of the program, special instructions, and any changes made in database tables on procedural, modular, and database level.
• Respond promptly and professionally to bug reports. 
• Knowledge of bluebird.js (Promises), Async, etc will be of advantage.
• Coding and programming using Object-Oriented Programming, Data Structure and Algorithms, architecture/ design and build RESTful API.
• Passionate about building products and features and build the product from scratch with thrust on Web security, TLS/SSL, web sockets, etc
• Knows one or more of Wireframes/ Prototyping/ Functional Documentation of business.

4-10 LPA based on experience and on performance in the interview round (70% Fixed - 30% Variable Incentive based on performance/delivery schedule)

(We do ZERO deductions since the salary will be paid from US/Singapore)

• Skills -
  • Core (Must understand and conversant to code on at least two of these technologies)
    • Java 8+/ Spring Boot/Microservices
    • Spark
    • Scala
    • Angular
    • Javascript
    • ElasticSearch
    • Graph Database (Tinkerpop/Janusgraph)
    • MySQL/Oracle
    • AWS/Azure/GCP
  • Secondary
    • Version Control - Jira/Bitbucket/Git
    • Build Tools - Maven/SBT/Gradle
    • Security
    • Agile/Scrum methodology
    • Should be able to create and review designs/documents
    • Must be able to clearly articulate situations, problems and communicate ideas and solutions

• Must understand System Analysis and Design with understanding of Algorithms (implementation in any language is okay)
• Design optimal and performant solutions for product backlog items spanning technologies
• Work with Product Owner/Project Manager and UX lead for providing LoE estimates for Jira backlog items
• Lead and own delivery or work items (for self and team)
• 80% hands-on work items (self), 20% team responsibility
• Must be willing to learn new technologies, processes, business functions, (we measure this by OKR’s)

Qualifications and Skills