Fullstack Developer

Full Stack Support Engineer

Node.js, React & Production Application Support

📍 Remote | Full-time | Night Shift | 3+ Years

About the Role

Unico Connect is an AI-first technology partner that builds custom mobile, web, and AI products for clients across multiple geographies.

We are hiring a Full Stack Support Engineer who will own day-to-day application support for a live customer product built on Node.js and React, working a fixed night shift aligned to North American business hours.

The mandatory requirements for this role are prior professional experience working a night shift, and the willingness to continue working a permanent night shift, Monday through Friday, approximately 7:00 PM to 4:30 AM IST, with on-call support coverage on weekends.

The role is fully remote.

The work is hands-on across the stack: triaging issues from monitoring alerts and customer tickets, performing root cause analysis, shipping bug fixes, applying minor framework and library updates, and communicating with the customer directly during the shift.

When there is no active support work, the engineer will contribute to other development projects within the company, so consistent productive output across the shift is expected.

Responsibilities:

Incident Response and SLA Adherence

Acknowledge and act on alerts and customer-raised tickets within the SLA window.

Critical incidents require response within 1 hour and best-effort resolution within 2 to 4 hours.

P1 issues require response within 2 to 4 hours and resolution within 1 business day.

P2 and P3 issues follow the documented SLA matrix.

Bug Fixes and Production Support

Investigate and resolve defects in previously built functionality across the customer-facing portal, internal portal, backend services, and third-party integrations.

Write clean fixes with appropriate tests and documentation.

Monitoring and Proactive Triage

Operate the application and infrastructure monitoring stack.

Investigate anomalies before they become incidents.

Tune alerts to reduce noise and improve signal.

Customer Communication During the Shift

Communicate directly with the customer in English during incidents and routine support, in writing and on calls.

Set clear expectations on status, root cause, and timeline.

Close the loop after resolution.

Minor Framework and Dependency Updates

Apply minor version upgrades to operating systems, frameworks, and libraries to maintain compatibility and security.

Test rigorously before promoting to production.

Hands-On Development Across the Stack

Work in the existing Node.js (Express, NestJS) backend and React frontend codebase.

Make focused changes that respect the existing architecture and patterns.

Contribution to Other Development Projects

When the support workload is light, contribute to other active development projects within Unico Connect.

Pick up well-scoped tasks, ship them to the team’s quality standard, and remain available to drop back into support work as soon as it is needed.

Root Cause Analysis and Write-Ups

For every meaningful incident, document the cause, the fix, the customer impact, and any follow-up actions to prevent recurrence.

Weekend On-Call Coverage

Provide on-call support coverage on weekends.

Respond to alerts and customer tickets within the defined SLA window.

AI-Assisted Support Workflows

Use Claude, Cursor, and similar tools day to day for triage, log analysis, code reading, and patch drafting.

Apply judgment on when to trust AI-generated output and when to verify.

Handover Discipline

Maintain clean shift handover notes for the day-shift team.

Track open issues, in-progress investigations, and customer commitments so nothing drops between shifts.

Requirements:

Prior Professional Night-Shift Experience (Mandatory)

Candidates must have worked a permanent night shift in a prior professional role for a meaningful period of time.

Adjacent late-evening shifts or occasional on-call do not qualify.

Willingness to Work a Permanent Night Shift Aligned to North American Business Hours, with On-Call Support Coverage on Weekends (Mandatory)

The shift is Monday to Friday, approximately 7:00 PM to 4:30 AM IST.

Candidates who cannot commit to night-shift hours on an ongoing basis should not apply.

3+ Years of Professional Full Stack Engineering Experience

With hands-on production work in both Node.js and React.

Strong JavaScript and TypeScript Proficiency

With React on the frontend and Node.js (Express, NestJS) on the backend.

API design experience with REST.

Comfortable reading and modifying an existing production codebase without breaking adjacent functionality.

Production Debugging and Incident Response Instincts

Ability to read logs, traces, and metrics to isolate a problem quickly.

Comfort triaging across application code, database queries, third-party API failures, and infrastructure.

Working Experience with Relational Databases

(PostgreSQL or MySQL), including reading and writing SQL, basic schema understanding, and the ability to investigate data-related incidents.

Familiarity with Cloud Infrastructure

On AWS, GCP, or Azure, at the level of reading logs, restarting services, deploying through CI/CD pipelines, and basic operational tasks.

Working Knowledge of Git, CI/CD Pipelines, and Monitoring Tools

At least one monitoring or observability tool (Datadog, New Relic, Sentry, CloudWatch, Grafana, or equivalent).

Strong Written and Spoken English Communication

This role involves direct customer interaction during the shift.

Calm, clear, professional communication in writing and on calls is non-negotiable.

Bachelor’s Degree

Bachelor’s degree in Computer Science, Information Technology, or a related engineering discipline.

Exceptional candidates with demonstrable production experience and strong portfolios may be considered without a formal degree.

Alertness, Judgment, and Ownership Mindset

Night-shift support work demands self-direction, attention to detail under low-supervision conditions, and the discipline to follow process when fatigued.

Nice to Have

• Prior experience in application support, AMC, or managed services engagements
• On-call experience with documented SLAs
• Experience with feature flag tools, error tracking platforms, or APM dashboards
• Exposure to AI-assisted development tools in a support context

Job Title: Full-Stack MERN Developer (5–8 Years Experience)

Location: Borivali, Mumbai (Onsite)

Experience: 6–8 Years

Joining: Immediate Joiners

Employment Type: Full-time

Job Overview

We are looking for an experienced Full-Stack MERN Developer to join our engineering team in Borivali, Mumbai. The ideal candidate should have strong hands-on experience building scalable web applications using React, Node.js, Express, and MongoDB, with a solid understanding of REST APIs, microservices architecture, performance optimization, and cloud infrastructure.

You will work on consumer-facing applications, handle large datasets, and contribute to building reliable, high-performance systems.

Key Responsibilities

• Design, develop, and maintain full-stack web applications using MERN stack
• Build scalable and secure RESTful APIs and backend services using Node.js & Express
• Develop reusable and high-performance React components with proper state management
• Implement microservices-based architecture and inter-service communication
• Optimize application performance at both frontend and backend levels
• Work with MongoDB for data modeling, indexing, and performance tuning
• Handle large datasets efficiently and ensure system reliability
• Implement logging, tracing, and monitoring for production-ready applications
• Collaborate with product, frontend, backend, and DevOps teams
• Write clean, maintainable, and well-documented code

Technical Requirements

Backend

• Strong hands-on experience with Node.js & Express.js
• Expertise in building REST APIs and backend business logic
• Strong understanding of async programming (Callbacks, Promises, Async/Await)
• Experience with microservices architecture
• Hands-on experience with MongoDB (Expert level)
• Working knowledge of PostgreSQL / MySQL
• Experience with Kafka or other message queue systems
• Familiarity with Bull / job schedulers

Frontend

• Strong experience with React.js
• Hands-on experience with state management (Redux, Context API, or similar)
• Good understanding of HTML, CSS, AJAX
• Experience with performance optimization techniques in React

Infrastructure & Cloud

• Experience with Docker and Kubernetes (K8s)
• Hands-on exposure to AWS services such as EC2, S3, ELB, AutoScaling, CloudFront
• Understanding of CI/CD pipelines is a plus

Core Computer Science

• Good understanding of Data Structures & Algorithms
• Solid knowledge of Operating Systems fundamentals

Good to Have

• Experience with Redis for caching
• Exposure to Vue.js
• Experience working on consumer-facing web or app products
• Strong debugging and problem-solving skills
• Familiarity with application monitoring tools (logs, metrics, tracing)

What We’re Looking For

• Strong problem-solving mindset and ownership attitude
• Ability to learn new tools and technologies quickly
• Comfortable working in fast-paced, production-driven environments
• Immediate or short-notice joiners preferred

Responsibilities:

 Work with development and product team 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, Ability to quickly pick up new areas in the product and write optimal

code taking into consideration the security and performance aspects of the product.

 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

Skills:

 Proven experience of around 4-7yrs as a Full Stack Developer.

 Should be a full stack developer who can code on cutting-edge technology stacks including

Laravel, Nodejs, Express js, Python, React, Angular, MySQL, MongoDB, Firebase, Elastic Search,

Docker, AWS etc. for our clients.

 Experience developing desktop and mobile applications

 Familiarity with common stacks

 Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML,

jQuery)

 Strong Knowledge of multiple back-end languages and on frameworks or platforms (Phython

/ Express JS / Django etc), API / Serverless services, DB Schema Definition.

 Good to have stakeholder management, team leading, team mentoring, code management

under critical problem

 Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache) and UI/UX

design

 Excellent communication and teamwork skills

 Great attention to detail and analytical skills.

 Degree in Computer Science, Statistics or relevant field

Job Description: Full Stack Developer – RattanIndia Technologies Private Limited

Based at: New Delhi

Overview:

Required Full Stack developer with 3 to 6 years of experience with competencies in development of web applications in financial services domain on salesforce development platform and shall be responsible for requirement analysis, design, coding, testing and implementation of web applications.

Key Accountabilities:

• Working closely with business teams on the analysis to understand the requirements.
• Shall be responsible for designing, coding, testing and implementation of web application.
• Will be responsible for system design and application development of web applications.
• Work closely with the product managers and other team members to build features, functionality, and application.
• Design and implementation of low-latency, high-availability, and high performance applications.
• Implementation of security and data protection.
• Demonstrate creativity and sound analytical skills in identifying effective approaches to develop solutions independently.
• Deliver features with high quality, on-time as per project plans and delivery commitments.
• Delivering status updates to the management and stakeholders regularly.
• Demonstrate creativity and sound analytical skills in identifying effective approaches to develop solutions independently.

Academic Qualification:

• Tech Computer Science/MCA from Top Tier Institutes.

Skillset Requirements:

• Expertise with Node.JS and associated technologies such as React and Express.
• Fluent in HTML5, CSS3, and JavaScript
• Experience with SQL (Postgres) data models
• Extensive experience developing and working with REST APIs.
• Experience working in a DevOps environment and using tools like Travis, Jenkins.
• Solid experience with containerization using Docker and Kubernetes.
• Proficiency with source control and team collaboration tools (GitHub, Asana, Jira, Slack)
• Experience with data interchange formats such as XML or JSON.
• Solid Experience with AWS, Heroku and Salesforce.

About RattanIndia ltd.

For Details visit: http://www.rattanindia.com">www.rattanindia.com

https://rattanindia.in/">https://rattanindia.in/

Job Description –

• Full stack developer position.
• Should have total of 5-7 years of experience.
• Should have min. of 2 years of experience in developing Enterprise apps on React.js and 2 years on Django apps.
• Very good in Data structure, logical reasoning, and algorithms.
• Experience with cloud providers like AWS or Azure or GCP is also required.
• Good Understanding of Design and Integration patterns.
• Ability to work independently and with lots of ownership.
• Ability to learn and apply newer technologies quickly.
• Good to have knowledge in building progressive web apps.

Role Description

• You will be full stack senior developer.
• Handle team of junior backend and frontend developer.
• You can and want to write code end-to-end.
• You would enjoy designing a system for speed and scale.
• Developing product using Reactjs for front end and Python for back end.
• We want you to debate on the pros and cons of different architectures and tech stack choices and be real contributing members.
• We want people who can and want to learn new stuff in real-time while on the job.

Skills - JavaScript, React.js, HTML, CSS, SQL with MySQL / PostgreSQL, Python, Django, AWS or Azure or GCP