Fullstack Developer

MERN Stack Developer

Location: Surat, Gujarat (No WFH )

Job Summary:

We are looking for a Full Stack Developer (MERN) with hands-on experience in building highly scalable, performance-driven applications. The ideal candidate should have a deep understanding of both front-end and back-end development, microservices, and database optimization for large-scale systems. You will be responsible for designing, developing, and maintaining applications that can handle high concurrency (1,000+ active users) while ensuring performance, reliability, and scalability.

This role involves working closely with cross-functional teams — including product managers, designers, and DevOps engineers — to deliver cutting-edge, enterprise-grade solutions.

Roles & Responsibilities:

• Design and develop scalable and distributed web applications using the MERN stack (MongoDB, Express.js, React/Next.js, Node.js).
• Build and optimize RESTful APIs for high-performance, concurrent environments.
• Architect and manage MongoDB databases, ensuring high availability, efficient query performance, and scalability.
• Implement queueing systems (e.g., BullMQ, RabbitMQ, Kafka, or Redis Queues) for background jobs and asynchronous processing.
• Optimize server and client performance to support real-time data updates and high concurrent user loads.
• Collaborate with DevOps to improve deployment pipelines, containerization (Docker), and cloud scalability.
• Conduct thorough testing, profiling, and debugging to identify performance bottlenecks and optimize both code and infrastructure.
• Participate in code reviews, architecture discussions, and sprint planning to ensure technical excellence and scalability across all layers.

Qualification / Requirements:

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 1 + years of hands-on experience in full-stack development using the MERN stack.
• Proven experience working on applications supporting 1,000+ concurrent users or large-scale distributed systems.
• Strong expertise in:
• Node.js (asynchronous programming, clustering, performance optimization)
• Next.js & React.js (SSR, CSR, and dynamic rendering)
• MongoDB (aggregation pipelines, indexing, schema design for scalability)
• Practical experience with message queues (BullMQ, RabbitMQ, Kafka, or Redis Streams).
• Familiarity with caching mechanisms (Redis, Memcached) to optimize performance.
• Experience with Docker and microservices-based architectures is a plus.
• Good understanding of API design, authentication mechanisms (JWT, OAuth), and security best practices.
• Experience working in Agile environments and using Git-based version control.

Nice to Have:

• Exposure to serverless computing (AWS Lambda).
• Experience with monitoring tools (New Relic, Datadog, ELK Stack).
• Knowledge of CI/CD pipelines and automated deployment workflows.
• Experience in real-time communication (WebSockets, Socket.io).

At BigThinkCode, our technology solves complex problems. We are looking for full-stack engineer to join our Microsoft capability teams at Chennai.

Our ideal candidate will have expert knowledge of software development processes, programming and problem-solving skills. This is an opportunity to join a growing team and make a substantial impact at BigThinkCode.

Please see below our job description, if interested apply / reply by sharing your profile to discuss.

Company: BigThinkCode Technologies

URL: https://www.bigthinkcode.com/

Work location: Chennai (work from office)

Experience: 3 – 4 years

Joining Time: Immediate-3 weeks

Programming Skills Required:

• Proficiency in C#, .NET Core, MVC
• Familiar with Data Structures & Algorithms, Object Oriented Programming basics.
• Hands on Problem Solving and Debugging skills.

Framework Required:

• EF Core
• Experience in OOJS, JavaScript, HTML, CSS, and at least one modern frontend framework like React/ Angular/ Vue.

Deployment And Devops Basics Required:

• Cloud (AWS), Docker
• Good to Have: Azure DevOps

Database Required:

• Relational (SQL Server), NoSQL, ORMs

Benefits

• Medical cover for employee and eligible dependents.
• Tax beneficial salary structure.
• Comprehensive leave policy
• Competency development training programs.

Roles and Responsibilities:

• Build scalable and loosely coupled services to extend our platform
• Build bulletproof API integrations with third-party APIs for various use cases
• Evolve our Infrastructure and add a few more nines to our overall availability
• Have full autonomy and own your code, and decide on the technologies and tools to deliver as well operate large-scale applications on AWS
• Give back to the open-source community through contributions on code and blog posts
• This is a startup so everything can change as we experiment with more product improvements

Some specific Requirements:

• Atleast 2+ years of Development Experience
• You have prior experience developing and working on consumer-facing web/app products
• Hands-on experience in JavaScript. Exceptions can be made if you’re really good at any other language with experience in building web/app-based tech products
• Expertise in Node.JS and Experience in at least one of the following frameworks - Express.js, Koa.js, Socket.io (http://socket.io/)
• Good knowledge of async programming using Callbacks, Promises, and Async/Await
• Hands-on experience with Frontend codebases using HTML, CSS, and AJAX
• Working knowledge of MongoDB, Redis, MySQL
• Good understanding of Data Structures, Algorithms, and Operating Systems
• You've worked with AWS services in the past and have experience with EC2, ELB, AutoScaling, CloudFront, S3
• Experience with Frontend Stack would be added advantage (HTML, CSS)
• You might not have experience with all the tools that we use but you can learn those given the guidance and resources
• Experience in Vue.js would be plus

About Us

UnScript.AI is a Deep-Tech company with a focus on creating highly engaging interactive videos solving conversion and engagement problems leveraging the most recent breakthroughs in Artificial Intelligence.

Responsibilities:

Full Stack Engineers at UnScript.AI are involved in all parts of the product life cycle: idea generation, design, planning, execution, and shipping. On day-to-day work, we create reliable, scalable and highly performant systems. A commitment to teamwork, hustle and good communication skills are our key requirements. As Full Stack Engineer, you will lead end-to-end development of modules with complete ownership of design, planning, coding & delivery.

• The Software Development Engineer's core responsibilities include working on highly maintainable and unit-tested software components/systems that address real-world problems.
• Ensure quality at every level be it problem-solving, design, code or bug fixes.
• Should be able to collaborate with product managers, architects and other stakeholders to ensure smooth execution of sprints.
• Own and unblock users on production issues, able to troubleshoot and fix production issues on priority.

SKILL SETS REQUIRED: Kubernetes, AWS/any other cloud, NodeJS, JavaScript, React/Next, Design thinking, API Framework

REQUIRED QUALIFICATIONS

• B.Tech or higher in Computer Science from a premier institute. (We are willing to waive this requirement if you are an exceptional programmer).

• You are a strong coder, Love to explore multiple languages and tech stacks; We are language-agnostic, and we love people who like to explore multiple stacks. We’re looking for people who can write clean, effective code.

• Building scalable & performant web systems with clear focus on reusable modules.

• You are comfortable in a high paced environment and can respond to urgent (and at times ambiguous) requests

• Ability to translate fuzzy business problems into technical problems & come up with design, estimates, planning, execution & deliver the solution independently.

Follow Agile development model to incrementally build out the applications with regular reviews with Product

• Knowledge in AWS would be great to have.

• Ability to work with databases, data pipelines.

About Us:

UnScript is a deep tech startup that builds powerful SAAS tool to generate videos using AI. UnScript was founded by distinguished alums from IIT, with exemplary backgrounds in business and technology. UnScript has raised two rounds of funding from global VCs with Peter Thiel(Co-founder, Paypal) and Ried Hoffman ( Co-founder, Linkedin) as investors. 

The Team:

Unscript was started by Ritwika Chowdhury. Our team brings experience from other foremost institutions like IIT Kharagpur, Microsoft Research, IIT Bombay, IIIT, BCG etc. We are thrilled to be backed by some of the world's largest VC firms and angel investors. 

• Strong at Core Java and OOPs concepts

• Exposure to Spring, Spring Boot and Spring Security
• Exposure to implementation of RESTful APIs
• Exposure to programming using Queues and No SQL database
• Good understanding about JavaScript, JQuery and HTML
• Good understanding about Data Structures and Multithreaded Programming
• Good understanding about Design Patterns
• Good understanding about Standard and Secure Coding practices

• Design and development of IT infrastructure of Jobaaj Group which includes multiple sites,

ensuring the best user experience.

• Help to design new functionality and features in our existing products like job portal or learning management system.
• Willing to complete the development of new products.
• Having experience of PHP frameworks(Laravel and codeigniter) will preferred
• Having Experience of JS framwork (React, Node, Angular, Vue) strongly preferred
• Deep experience with AJAX and Javascript required
• Strong familiarity with OOPS
• Experience integrating third party APIs, familiarity with both REST and SOAP APIs is required!
• Ability to work independently and manage time effectively
• Outcome driven and able to deliver both speed and quality output.
• Take ownership and see it through from idea to execution.
• Problem solvers
• Hustlers: Relentlessly pushing boundaries to deliver.

As a Full Stack Developer, you will develop applications in a very passionate environment being responsible for Front-end and Back-end development. You will perform development and day-to-day maintenance on large applications. You have multiple opportunities to work on cross-system single-page applications.

Required Skills

• ASP.net (Web API), Entity Framework 6, C# (.NET 4.5),
• MYSQL
• Javascript (experienced writing modular, object-oriented Javascript)
• Knowledge with jQuery, AngularJS libraries
• E Knowledge with RESTful web services HTML5, CSS3, BootStrap 3 of multiple design patterns
• Experience Wth Git based version control
• Minimum 2+ years developing production JavaScript code and strong knowledge of React.JS