Fullstack Developer - MERN

Job Title: MERN Stack Developer

Company: Pentabay Softwares

Location: Anna Salai (Mount Road), Chennai

Employment Type: Full-Time

Experience Required: 1–4 Years

Job Description:

Pentabay Softwares is looking for a skilled and motivated MERN Stack Developer to join our growing team. The ideal candidate should have hands-on experience in developing scalable web applications using MongoDB, Express.js, React.js, and Node.js.

Roles & Responsibilities:

• Develop and maintain web applications using the MERN stack
• Build reusable, efficient, and scalable code
• Collaborate with UI/UX designers and backend teams
• Design and integrate RESTful APIs
• Troubleshoot, debug, and optimize application performance
• Participate in code reviews and follow best development practices
• Work closely with project managers to meet deadlines

Required Skills:

• Strong experience with MongoDB, Express.js, React.js, and Node.js
• Proficiency in JavaScript (ES6+), HTML5, and CSS3
• Experience with REST APIs and third-party integrations
• Knowledge of Git/version control systems
• Basic understanding of security and performance optimization
• Familiarity with Agile/Scrum methodology

Good to Have:

• Experience with Redux, Next.js, or TypeScript
• Exposure to cloud platforms (AWS, Azure, or GCP)
• Understanding of CI/CD pipelines

Who Can Apply:

• Candidates with 1–4 years of relevant experience
• Strong problem-solving and communication skills
• Ability to work independently and as part of a team

Work Location:

📍 Anna Salai (Mount Road), Chennai

Position Overview: The Lead Software Architect - Python & Data Engineering is a senior technical leadership role responsible for designing and owning end-to-end architecture for data-intensive, AI/ML, and analytics platforms, while mentoring developers and ensuring technical excellence across the organization. 

Key Responsibilities: 

• Design end-to-end software architecture for data-intensive applications, AI/ML pipelines, and analytics platforms
• Evaluate trade-offs between competing technical approaches 
• Define data models, API approach, and integration patterns across systems 
• Create technical specifications and architecture documentation 
• Lead by example through production-grade Python code and mentor developers on engineering fundamentals 
• Conduct design and code reviews focused on architectural soundness 
• Establish engineering standards, coding practices, and design patterns for the team 
• Translate business requirements into technical architecture 
• Collaborate with data scientists, analysts, and other teams to design integrated solutions 
• Whiteboard and defend system design and architectural choices 
• Take responsibility for system performance, reliability, and maintainability 
• Identify and resolve architectural bottlenecks proactively 

Required Skills:  

• 8+ years of experience in software architecture and development  
• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field 
• Strong foundations in data structures, algorithms, and computational complexity 
• Experience in system design for scale, including caching strategies, load balancing, and asynchronous processing  
• 6+ years of Python development experience 
• Deep knowledge of Django, Flask, or FastAPI 
• Expert understanding of Python internals including GIL and memory management 
• Experience with RESTful API design and event-driven architectures (Kafka, RabbitMQ) 
• Proficiency in data processing frameworks such as Pandas, Apache Spark, and Airflow 
• Strong SQL optimization and database design experience (PostgreSQL, MySQL, MongoDB)  Experience with AWS, GCP, or Azure cloud platforms 
• Knowledge of containerization (Docker) and orchestration (Kubernetes) 
• Hands-on experience designing CI/CD pipelines Preferred (Bonus) 

Skills: 

• Experience deploying ML models to production (MLOps, model serving, monitoring) Understanding of ML system design including feature stores and model versioning 
• Familiarity with ML frameworks such as scikit-learn, TensorFlow, and PyTorch  
• Open-source contributions or technical blogging demonstrating architectural depth 
• Experience with modern front-end frameworks for full-stack perspective

Full Stack Architect

• Design overall architecture of the web based platform in the space of Analytics and Application Security.
• Maintain quality and ensure responsiveness of applications.
• Collaborate with the rest of the engineering team to design and launch new features.
• Maintain code integrity and organization.
• Experience working with graphic designers and converting designs to visual elements.
• Understanding and implementation of security and data protection.
• Highly experienced with back-end programming languages – Python with Flask
• Proficient experience using JavaScript libraries and frameworks – ReactJS, Redux
• Proficient in Non-SQL DB like Mongo
• Well versed with Cloud Engineering like AWS
• Good Understanding of Containerisation like Docker, Kubernetes
• Application Development experience for both mobile and desktop.
• Experience with cloud message APIs and usage of push notifications.
• Understands Microservices Design.
• Knowledge of code versioning tools like Bitbucket
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Comfortable working on Design documentation

Work with data scientists and analysts to improve software.

As a Founding Senior Python Backend Developer specializing in AI, you will play a pivotal role in building and integrating AI-driven solutions into our application. You will collaborate with cross-functional teams to ensure seamless integration, scalability, and performance of the backend components. This is a unique opportunity to be part of the core team, shaping the future of healthcare technology at Exora Labs.

Responsibilities:

Backend & Frontend Development:

Design, develop, and maintain scalable backend components using Python and relevant frameworks.

Implement robust and efficient APIs to support the functionality of the RAG application.

AI Integration:

Integrate generative AI solutions into the backend infrastructure, leveraging frameworks such as TensorFlow, PyTorch, or similar.

Collaborate with data scientists to deploy and optimize generative models within the application.

Identify and address bottlenecks in the system for optimal performance.

Implement scalability measures to accommodate the growth of the RAG application.

Collaboration:

Collaborate with cross-functional teams, including frontend developers, data scientists, and product managers, to deliver high-quality solutions.

Participate in code reviews and contribute to a culture of continuous improvement.

Qualifications:

Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.

Proven experience as a Python Backend Developer with expertise in building scalable applications.

Strong proficiency in Python and relevant backend frameworks (Django, Flask, FastAPI, etc.).

Familiarity with AI/ML frameworks such as TensorFlow, PyTorch, or similar.

Solid understanding of database design and optimization.

Excellent collaboration and communication skills.

Ability to work in a dynamic and fast-paced environment.

Experience with cloud platforms (AWS, Azure, GCP).

Why You Would Enjoy Working with Us:

We believe that the future of healthcare is not just anticipated but actively created. Our approach is deeply rooted in scientific rigor, continuously iterating to find the most optimal solutions—guided by real user experiences and feedback.

Our mission is clear: to revolutionize healthcare with Dr. Copilot, leveraging generative AI to provide unparalleled support to medical professionals and patients alike. We are committed to innovation, always ready to explore and uncover new truths, even when they challenge the status quo. Learning is a core part of our culture; whether you’ve been with us for a decade or a day, every team member is constantly growing and evolving in their role.

If you aspire to be part of a groundbreaking movement that is poised to transform healthcare for billions and shape a trillion-dollar industry, then join us on this exciting journey.

Key Tasks & Accountability:

• Collaborate with development teams and product managers to create innovative software solutions.
• Able to develop entire architecture, responsive design, user interaction, and user experience.
• The ability to use databases, proxies, APIs, version control systems, and third-party applications.
• Keep track of new development-related tools, frameworks, methods, and architectures.
• The developer is in charge of creating APIs depending on the architecture of the production application.
• Keeping up with the latest advancements in programming languages and server apps.

Skills:

• Comfortable around both front-end and back-end coding languages, development frameworks and third-party libraries.
• Knowledge of React, Redux and API Integration.
• Experience with backend technology like NodeJs, Microservices, MVC Framework and Data Base connection.
• Knowledge on SQL/NoSQL such as MySql, mongoDB.
• Knowledge of cloud such as AWS.
• Team player with a knack for visual design and utility.

We have an opening for Sr Lead Software Engineer -Full / Mern Stack Developer.

Responsibilities :

• Responsible for writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Understanding of performance testing and optimization techniques

Requirements

• Should have the ability to translate Wireframes and PSD Designs into functional web apps using HTML5, React , Node.js, and Mongo.
• Binding of UI elements to JavaScript object models
• Creating RESTful services with Node.js
• Architect scalable web architectures
• Must have proven experience in front ( Rect.js)& back-end development (Node.js)
• Work in a cross-functional team to deliver a complete user experience
• Must know MongoDB, Express, Node.js, & React., Typescript, CSS, HTML, Bootstrap
• Create Unit and Integration tests to ensure the quality of code
• Be responsive to change requests and feature requests
• Write code that is cross-platform and cross-device compatible
• Must have the ability to wear many hats and learn new technologies quickly
• Candidate must have good Knowledge of Node Debugging
• Understanding & proficiency in REST APIs.
• Should know Git Repository and Jira.
• Integration of data storage solutions [RDBMS, NoSQL DB]

Qualifications

Having Expereince in MongoDB - Document DataBase,

Node.js —Express(.js) web framework -Backend

React(.js) — a client-side JavaScript framework along with Bootstrap , HTML5, CSS3 - Frontend

Education : B Tech , BCA or Equivalent

Relevant Experience : 3 to 9 years : Full Stack developer

Preferred Candidate : Immediate Joiner

Location: Kolkata only ( Onsite).