MERN Stack Developer

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.

Roles and Responsibilities

• Architecting and building server and browser-based systems that integrate with our hardware.
• Creating a great user experience by building both back-end infrastructure and user-facing features.
• Performing code reviews and having your code reviewed by peers.
• Creating technical requirements, software design specifications, and other architectural documentation.
• Work closely with UX/UI designers to translate design concepts into functional user interfaces, ensuring a smooth user experience. 
• Implement security and data protection measures throughout the development process. 
• Troubleshoot and debug issues across the entire application stack, from frontend to backend. 
• Optimize application performance and ensure its responsiveness across various devices and browsers, applications for maximum speed and scalability.
• Producing software solutions that inherently support testing at multiple levels prior to delivery, including the decomposition of functions, interface-based design, dependency injection, unit testing, test-driven design, service level testing, and supporting user interface automation testing.
• Modifying and creating code to enable successful automated builds, deployment, and testing.
• Effectively leveraging tools and best practices to enable continuous integration and frequent, reliable releases.
• Monitoring system performance to ensure efficient operations and results.
• Collaborating with cross-functional teams, including designers, product managers, and other developers, to gather and understand project requirements.
• Collaborating with DevOps teams to deploy applications and ensure seamless integration with the production environment.
• Designing and developing high-quality, scalable, and efficient web applications using the MERN stack.
• Developing and implementing front-end components using React.js, ensuring a responsive and user-friendly interface.
• Building RESTful APIs and server-side applications using Node.js and Express.js.
• Creating and maintaining databases using MongoDB, ensuring data integrity and performance.
• Writing efficient and reusable code while adhering to best practices and coding standards.
• Conducting thorough testing and debugging of applications to identify and fix any issues or bugs.
• Mentoring and providing guidance to junior developers, sharing your knowledge and expertise.

Must-Have Skills

• Should have 3-6 years of proven experience as a MEAN/MERN Stack Developer.
• Should have proficient in JavaScript (React/Angular/Vue), with significant experience in Node.js and Express.js.
• Should have extensive experience with React.js and its ecosystem (Redux, React Router, etc.).
• Should have In-depth knowledge of server-side development using Node.js and Express.js.
• Should have experience with MongoDB or other NoSQL databases, including data modeling and querying.
• Should have a solid understanding of RESTful APIs and experience in building them.
• Should be proficient in MERN Full Stack Developer with CSS modules and theme management, with a strong grip on developing custom components. 
• Should be Skilled in building scalable, user-friendly applications using React.js, Node.js, Express.js, and MongoDB.
• Should be proficient in using UI component libraries like MUI and styled-components for efficient and dynamic web design.
• Should be proficient in frontend API caching with React hooks for optimized performance and seamless user experiences.
• Should have familiarity with version control systems (e.g., Git) and agile development methodologies.
• Should have proficiency in Object-Oriented Programming (OOP) principles and design patterns.
• Should have experience with AWS cloud services.
• Should have experience with CI/CD technologies.
• Should have familiarity with newer specifications of ECMAScript (a scripting language specification on which JavaScript is based).
• Should have experience with data structure libraries (e.g., Immutable.js).
• Should have proficiency with common front-end development tools such as Babel( Which is a JavaScript compiler that is mainly used to convert ECMAScript 2015+ code into backwards-compatible JavaScript code that can be run by older JavaScript engines.), Webpack (to bundle JavaScript files for usage in a browser,), and NPM (Largest Software Registry (Library)).
• Should have ability to understand and translate business requirements into technical specifications.
• Should have familiarity with relational database systems, especially PostgreSQL.
• Should have experience in AWS with lambda functions

Good to Have Skills 

• Should have a Bachelor's degree in Computer Science or related field.
• Good interpersonal skills with the ability to present ideas in user-friendly language.
• Successful experience working in a team-oriented, collaborative environment.
• Proven analytical and problem-solving abilities.
• Should have excellent relationship and customer handling skills.
• Strategic thinker with strong influencing skills and the ability to build consensus.
• Strong action orientation; ability to make things happen.
• Facilitates team and stakeholder meetings effectively.

Position: Technical Architect

Location: Hyderabad

 Experience: 6+ years

Job Summary:

We are looking for an experienced Technical Architect with a strong background in Python, Node.js, and React to lead the design and development of complex and scalable software solutions. The ideal candidate will possess exceptional technical skills, a deep understanding of software architecture principles, and a proven track record of successfully delivering high-quality projects. You should be capable of leading a cross-functional team that's responsible for the full software development life cycle, from conception to deployment with Agile methodologies.

Responsibilities:

●       Lead the design, development, and deployment of software solutions, ensuring architectural integrity and high performance.

●       Collaborate with cross-functional teams, including developers, designers, and product managers, to define technical requirements and create effective solutions.

●       Provide technical guidance and mentorship to development teams, ensuring best practices and coding standards are followed.

●       Evaluate and recommend appropriate technologies, frameworks, and tools to achieve project goals.

●       Drive continuous improvement by staying updated with industry trends, emerging technologies, and best practices.

●       Conduct code reviews, identify areas of improvement, and promote a culture of excellence in software development.

●       Participate in architectural discussions, making strategic decisions and aligning technical solutions with business objectives.

●       Troubleshoot and resolve complex technical issues, ensuring optimal performance and reliability of software applications.

●       Collaborate with stakeholders to gather and analyze requirements, translating them into technical specifications.

●       Define and enforce architectural patterns, ensuring scalability, security, and maintainability of systems.

●       Lead efforts to refactor and optimize existing codebase, enhancing performance and maintainability.

Qualifications:

●       Bachelor's degree in Computer Science, Software Engineering, or a related field. Master's degree is a plus.

●       Minimum of 8 years of experience in software development with a focus on Python, Node.js, and React.

●       Proven experience as a Technical Architect, leading the design and development of complex software systems.

●       Strong expertise in software architecture principles, design patterns, and best practices.

●       Extensive hands-on experience with Python, Node.js, and React, including designing and implementing scalable applications.

●       Solid understanding of microservices architecture, RESTful APIs, and cloud technologies (AWS, GCP, or Azure).

●       Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.

●       Should create automation test cases and unit test cases (optional)

●       Proficiency in database design, optimization, and data modeling.

●       Experience with DevOps practices, CI/CD pipelines, and containerization (Docker, Kubernetes).

●       Excellent problem-solving skills and the ability to troubleshoot complex technical issues.

●       Strong communication skills, both written and verbal, with the ability to effectively interact with cross-functional teams.

●       Prior experience in mentoring and coaching development teams.

●       Strong leadership qualities with a passion for technology innovation.

●        have experience in using Linux-based development environments using GitHub and CI/CD

●       Atlassian stack (JIRA/Confluence)

 Job Description:

We are looking for a self-starter/ Full Stack Developer who can work well with minimal guidance and in a fluid environment. Proficient at programming and interacting with APIs and good knowledge of RESTful design. Customer-focused reacts well to changes, works with teams, and is able to multitask. A natural communicator who can articulate and express thoughts and explain technical concepts in clear, plain English (both written and verbal)

Key Responsibilities: 

Hands-on experience in different technologies and languages such as Java, JavaScript, HTML, CSS, ReactJS, NodeJS, MongoDB, Express JS, MySQL to develop applications. Full Stack Developers approach software holistically since you cater to both user experience and functionality. Participating in the design and creation of scalable software. Writing clean, functional code on the front- and back-end. Testing and fixing bugs or other coding issues

Position Type: Full-Time

Educational Qualifications: B.Tech/B.Sc/MCA/Relevant Degree in Computer Science.

Experience: 3+ years of hands-on experience in Front-end & Backend

Reports to: Development Manager

Roles & Responsibilities:

• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software
• Excellent scoping and estimation skills

Skills and Responsibilities:

• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Deep understanding of client-side development, coding in HTML5, CSS3, JavaScript ES6, and jQuery.
• Developing and implementing highly responsive user interface components using react
• Strong experience using a client-side MVC framework such as NodeJS, React JS, NextJS, Redux.
• Strong experience in feather JS is a plus
• Familiarity with common stacks & tech stacks.
• Strong knowledge in databases MySQL, MongoDB, web servers Apache, and UI/UX design.
• Top-notch programming skills and write code for robust software design.
• Experience in responsive design, cross-browser compatibility, and website performance.
• Knowledge of performance testing frameworks including Mocha and Jest
• Experience in object-oriented design skills.
• Aggressive problem diagnosis and creative problem-solving skills.
• Good understanding of how browsers and DOM work.
• Experience with Git.
• Experience with handling Services, RESTful, APIs.
• Knowledge of frontend CSS frameworks like Bootstrap.
• Excellent communication and teamwork skills
• Great attention to detail
• Organizational skills
• An analytical mind and problem-solving skills.
• F&B (Food and Beverages) domain experience is a plus.
• Monitoring and improving front-end performance
• A passion for new consumer technology and the emerging media landscape

Tech Lead (Job Description)

About Us

Geo-Insighter is a SaaS-based Next Generation GIS tech start-up working towards helping multiple industries in solving drone data visualisation, analytics and processing problems. It has one of the most advanced Geo-Video players with world-class features and tools to get productive outcomes.

The expectation of the Position: Works independently under limited supervision and applies knowledge of the subject matter in Applications Development. Possess sufficient knowledge and skills to effectively deal with issues, and challenges within the field of specialisation to develop simple application solutions. Second-level professional with a direct impact on results and outcomes. Directly responsible for complete development in the company while directly reporting to founders.

Responsibility And Duty

Key Responsibility Area :

• The candidate must possess a strong technology background with advanced knowledge of Angular 2+, NodeJs, Cloud and web technologies.
• At least 3+ years of strong experience with enterprise-wide systems/platform web development using Angular 8+ as the frontend framework.
• Having strong knowledge of working with JavaScript/Typescript concepts and ES6 features.
• Good understanding of coding principles like modularity, and re-usability.
• Knowledge in Angular UI frameworks like Bootstrap, and Angular Material and should be good in developing Responsive applications
• Thorough knowledge of working with HTML5 language and CSS3.
• Strong experience in managing User Interfaces for data-intensive platforms.
• Hands-on experience in third-party libraries for Graphs, Complex Data Tables, Full calendars etc.
• Strong Experience in Version control like GIT.
• Ability to understand requirements and design UX and translate UX designs into actual product implementation.
• Self-starter with the ability to take a task to completion independently.
• CI/CD pipeline (Build and deploy) for Angular applications.
• Knowledge of AWS Cloud Services
• Must understand Caching strategy and implementation
• Leverage CSS effectively
• Experience in handling a team of at least 5 people.
• Understand all security measures required in deploying the application
• Deep understanding of application architecture

Skills

Must-Have :

• The candidate must possess a strong technology background with advanced knowledge of Angular 2+, NodeJs, and Cloud and web technologies.
• At least 3.5+ years of strong experience with enterprise-wide systems/platform web development using Angular 7+ as the frontend framework.
• Understanding NodeJs (Backend Technologies) along with MongoDB (NoSQL).
• Having strong knowledge of working with JavaScript/Typescript concepts and ES6 features.
• Understanding of cloud technologies 
• Good understanding of coding principles like modularity, and re-usability.
• Knowledge of Angular UI frameworks like Bootstrap, and Angular Material and should be good in developing Responsive applications.
• Thorough knowledge of working with HTML5 language and CSS3.
• Strong experience in managing User Interfaces for data-intensive platforms.
• Strong Experience in Version control like GIT.
• Experience in handling a team of at least 5 People.
• Understand all security measures required in deploying the application.
• Entrepreneurial mindset

Nice to Have :

• Understanding of mobile application development, using flutter.
• Understanding of IoT.
• Familiar with GPS, accelerometer and other mobile sensors.
• Previous Startup Experience

KRAs:

• Liaise with business/departmental stakeholders, understanding requirements
• Making project plan and enhancement feature release roadmap
• Working hands-on for product enhancements
• Producing, testing and debugging code

Job brief:

We are looking for a Senior Solution Engineer to lead and implement solution enhancements. You will work with top management to define solution requirements and take the lead on technical aspect of the project.

In this role, you should be able to work independently with little supervision. You should have excellent organization and problem-solving skills. If you also have hands-on experience in technology development and agile methodologies, we’d like to meet you.

Your goal will be to enhance and develop high-quality technology solutions that is aligned with user needs and business goals.

Responsibilities

• Develop high-quality technology design and architecture
• Identify, prioritize and execute tasks in the software development life cycle
• Develop tools and applications by producing clean, efficient code
• Automate tasks through appropriate tools and scripting
• Review and debug code, perform validation and verification testing
• Identify 3rd party integration opportunity and engage with 3rd party team on technology and business aspect and drive successful integration

• Develop technology solutions by studying information needs; conferring with users; studying systems flow, data usage, and work processes; investigating problem areas; following the software development lifecycle
• Determine operational feasibility by evaluating analysis, problem definition, requirements, solution development, and proposed solutions
• Demonstrates solutions by developing documentation, flowcharts, layouts, diagrams, charts, code comments and clear code
• Protect operations by keeping information confidential
• Provide information by collecting, analysing, and summarizing development and service issues.

Skillset requirements:

• Knowledge of selected programming languages (e.g. Python, C++) and the Java/J2EE platform
• In-depth knowledge of relational databases (e.g. PostgreSQL, MySQL) and NoSQL databases (e.g. MongoDB)
• Java/JEE, Spring, JSON, XML, NoSQL Database(MongoDB, Cassandra), Distributed System, RDBMS, ePub3, MVC frameworks, Design Patterns, Javascript, JQuery, JSON
• Ability to use version control software such as GIT and SVN
• Experience as an applications programmer on large-scale data base management systems
• Experience writing SQL queries for SQL Server or another Relational Database is required
• Experience in LAMP (Linux, Apache, MySQL, PHP/Python/Perl) and/or server-side Java programming with Web 1.0 MVC frameworks and experience in JEE technologies like Servlets, JSPs, EJBs, Web Services, JMS, JAXB.
• Design, develop and implement unit and scenario testing for existing code base and for new functionality under development
• High scalability projects involving cloud-based infrastructure design and implementation
• Good understanding of Web Services protocols such as REST, SOAP and API design for extensibility and portability
• Experience debugging distributed systems with high data loads
• Deep understanding of distributed data model
• Solid understanding of the Software as a Service (SaaS) model in the online environment

Mindset requirements:

• Solution mindset
• Teamwork
• Analytical & Critical Thinking
• Attention to details