Full Stack Developer

Technical Lead – Full Stack 

Overview 

We are seeking a high-caliber Tech Lead – Full Stack to join our Digital Twin Platform and Simulation team. In this role, you will translate high-level architectural visions into robust, executable low-level designs (LLD). You will be the technical anchor for the squad by providing deep technical guidance and maintaining rigorous standards you will enable the team to deliver scalable interfaces and services that power our digital twin ecosystem. 

Our Core Full Stack Stack 

Front-End Engineering 

• React + TypeScript (with Next.js), ShadCN/UI, Tailwind CSS for building complex, state-heavy interactive dashboards.
• JavaScript (ES6+) and TypeScript for type-safe management of simulation data 
• State management (Redux/Zustand) optimized for high-frequency data updates 

·      Experience in ESRI ArcGIS Map usage in UI is a big plus.

Back-End & Microservices 

• Java and Spring Boot for building high-scale, resilient microservices 
• REST APIs for seamless communication between services and front-end consumers 
• Microservices architecture and system integration patterns 
• Experience designing, building, and integrating RESTful or GraphQL APIs, Protobuf with gRPC and gRPC-Web  

Engineering Excellence 

• GitHub for version control and rigorous Code Reviews 
• CI/CD pipelines, Docker, and Kubernetes for cloud-native deployment 

Key Responsibilities 

• Low-Level Design (LLD): Convert high-level architectural blueprints into detailed technical designs, including class diagrams, sequence diagrams, and API specifications. 
• Technical Mentoring: Lead and coach the engineering team through pair programming, technical 1-on-1s, and hands-on guidance to elevate overall team competency. 
• Standards Enforcement: Ensure all code adheres to the defined engineering standards, SOLID principles, and design patterns established by the Architects. 
• Code Quality & Review: Conduct comprehensive code reviews to maintain high quality, ensuring the team delivers clean, testable, and maintainable code. 
• Technical Anchoring: Serve as the "go-to" expert for the squad to resolve complex technical blockers and provide clarity on implementation details. 
• Hands-on Development: Direct implementation of critical and complex modules, setting the benchmark for performance and reliability. 
• System Integration: Oversee the technical execution of integrations between full-stack applications and core data layers (Databricks/Neo4j). 
• Delivery Governance: Ensure the squad meets sprint objectives by maintaining a high standard of execution and managing technical debt effectively. 

Preferred Qualifications 

• 8 to 10 years of professional experience in full-stack software development. 
• Proven track record in a Tech Lead capacity, with strong experience in creating Low-Level Designs. 
• Expert-level proficiency in Java, Spring Boot, and React. 
• Deep understanding of Microservices architecture and RESTful API design. 
• Familiarity with ShadCN/UI familiarity along with Material UI, Storybook, and/or similar tools
• Demonstrated ability to mentor engineering teams and drive technical excellence in an Agile environment. 
• Experience working in the India tech region, preferably within high-growth product engineering teams.

Highly Desirable 

• Experience building platforms for Digital Twin, IoT, or Simulation environments. 
• Familiarity with visualizing complex networks or real-time operational data. 
• Knowledge of performance tuning for both front-end rendering and back-end processing. 
• Experience leading teams in an Agile/Scrum environment. 
• Exposure to industrial domains such as Manufacturing, Logistics, or Transportation is a plus. 

Location: Hyderabad, Telangana 

Department: Engineering 

Employment Type: Full-Time 

Job Description :

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

Location : Gurgaon (Work From Office, 6 days a week)

Employment Type : Full-Time

Role Overview :

We are seeking a highly skilled and motivated Full Stack Developer with expertise in Python and React.js to join our dynamic team in Gurgaon. The ideal candidate will have a strong foundation in backend and frontend development, a passion for building scalable applications, and the ability to thrive in a collaborative environment.

Key Responsibilities :

• Design, develop, and maintain scalable web applications using Python for the backend and React.js for the frontend.
• Build RESTful APIs and integrate third-party APIs to enhance application functionality.
• Collaborate with cross-functional teams, including designers and other developers, to deliver robust software solutions.
• Optimize applications for maximum speed, scalability, and responsiveness.
• Write clean, maintainable, and testable code following industry best practices.
• Debug and resolve technical issues across the stack.
• Stay updated with emerging technologies and contribute to improving existing development processes.

Required Skills and Qualifications :

• Experience: 3+ Years of professional experience as a Full Stack Developer.
• Backend Expertise: Strong proficiency in Python (Django/Flask/FastAPI).
• Frontend Expertise: In-depth knowledge of React.js, HTML5, CSS3, and JavaScript (ES6+).
• Database Management: Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB).
• Version Control: Proficiency in using Git for version control.
• Development Practices: Familiarity with Agile methodologies, CI/CD pipelines, and test-driven development (TDD).
• Problem-Solving: Strong analytical and problem-solving skills.
• Communication: Excellent communication and teamwork skills.

Preferred Qualifications

• Experience with Docker, Kubernetes, or cloud platforms such as AWS, GCP, or Azure.
• Familiarity with GraphQL and WebSockets.
• Knowledge of UI/UX design principles.

What We Offer

• Competitive salary package.
• Opportunity to work on exciting and challenging projects.
• Collaborative and inclusive work environment.
• Career growth and skill development opportunities.

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.

Job Title: Full Stack Developer

Experience- 3+ years

Location: Remote

Notice Period: Immediate Joiner Preferred

Job Description:

Responsibilities:

• Design, develop, and maintain full-stack applications using Python (FastAPI), Node.js, and React.
• Create and optimize RESTful APIs and backend services.
• Work with PostgreSQL to design efficient data models and write complex SQL queries.
• Develop responsive and interactive front-end components using React.
• Collaborate with team members using Git for version control and code reviews.
• Debug, troubleshoot, and enhance existing applications for better performance and user experience.
• 
  

Requirements:

• 3 years of experience in full-stack development or a similar role.
• Strong proficiency in Python with hands-on experience in FastAPI.
• Solid front-end development experience using React.
• Experience developing backend services with Node.js.
• Proficiency in PostgreSQL, including writing efficient SQL queries.
• Familiarity with Git for version control and collaborative development.
• Good communication and problem-solving skills.

Outfy(www.outfy.com) is a prominent Social media tool for online business headquartered in US and has a full fledged offshore development centre in Noida. We specialize in providing cutting-edge solutions to businesses aiming to enhance their online presence. As a Lead Developer, you will play a pivotal role in shaping the technological landscape of our platform.

Responsibilities:

• Lead the development and maintenance of our React web application and Node.js backend services.
• Collaborate with cross-functional teams to design, develop, and implement robust and scalable solutions.
• Architect and build efficient and reusable code for future use.
• Mentor and guide junior developers, fostering a collaborative and knowledge-sharing environment.
• Stay updated on emerging technologies and trends, incorporating them into our development processes.

Requirements:

• Proven experience (8-10 years) as a React Web and Node.js Developer.
• Strong proficiency in JavaScript/TypeScript and its modern frameworks/libraries.
• Extensive knowledge of front-end and back-end technologies, with expertise in React and Node.js.
• Experience working with RESTful APIs and microservices architecture.
• Solid understanding of the entire web development process, including design, development, and deployment.
• Leadership and mentoring skills with the ability to guide a team effectively.
• Ability to work independently and efficiently in a fast-paced environment.

Description:

• Building highly scalable services end-to-end with frontend to handle terabytes of data.

• Finding innovative ideas to solve highly complex engineering problems or best UI/UX experience.

• Own, execute and deliver products/features end-to-end from planning to design to development to deployment

• Be the go-to person for the team for guidance and troubleshooting

• Proactively involved in code reviews, architecture, and design discussions

• Be the mentor to junior engineers or Interns for their deliverables to succeed

• Maintain engineering standards and best practices for coding, code reviews, releases

Required skills:

• 1 to 3 years of expertise in full stack software development with one or more of the general programming languages (e.g., Frontend- Angular, React, TypeScript, Backend- Python, java, C/C++, Go etc.). Experience in Angular with python is recommended.

• Deep understanding of how to build an application with easy integration of RESTful APIs along with good sense of UI designs.

• Knowledge of a how a frontend and backend framework like Angular or Django or similar with ORM or multi-tier, multi-DB-based data-heavy web application development will help your profile stand out.

• Proficiency in (S)CSS, HTML5, Javascript and writing cross-browser compatible code along with CSS framework like Bootstrap.

• Good understanding of RxJS observables and/or Promises, chart libraries like ChartJS or Highcharts.

• Good understanding of bundling modules (Webpack or gulp)

• knowledge of SQL queries & DB like PostgreSQL(must) or MySQL. Working knowledge of NoSQL DBs (Mongo, Redis, etc.) is a plus.

• Understands a programming language's limitation to exploit the language behavior to the fullest potential.

• Understanding of accessibility and security compliances

• Ability to communicate complex technical concepts to both technical and non- technical audiences with ease

• Diversity in skills like version control tools, CI/CD, cloud basics, good debugging skills, and test-driven development will help your profile stand out.

1.Atleast 1.5 - 3 yr Experience in Mongodb

2.Overall 4-10 yrs Experience  in PHP/MERN Stack Development

3.Strong Experience in large data set

4.Strong Knowledge in anyone of PHP ( Yii2, Larvel,Codeigniter)

5.Good understanding of Code optimization.

6.Excellent in Designing & Architecture, handle AWS(Amazon Web Services) for our product in Financial domain.

7.Expert in working on core PHP,Oops,MySQL,Javascript,Ajax,HTML5,CSS3,& JQuery technologies

8.Proficient Understanding of Code Version Tools Such as Git ,Bit Bucket

9.The candidate should be well versed with problem solving skills,task breakdown  & code reviewing.