Fullstack Android Developer

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

Build and maintain products. Build products and features, through inception, design, implementation and launch, working closely with multiple disciplines across the company. You will spend the majority of your time working on critical projects which require focus on integrations, scalability, and performance. You will also be the first line of defense in ensuring that the product features are achievable and have a clear purpose, trimming off unnecessary detailing, especially in the earliest stages. Align across teams and stakeholders. Play a key role in ensuring that objectives and expectations are aligned across multiple concurrent products. You are expected to break down features within each project and prioritize tasks based on the expertise of the team, keeping redundancy in mind. 

Maintain a high bar for code quality and future proofing. Implement processes for checking in code that maintains a high bar of code quality. You are expected to optimize for a solution that affords the best user experience in a reasonable amount of time while ensuring to allow for adequate security, ability to scale in the future etc. 

Responsibilities

● Design, build and maintain scalable, secure web services and distributed systems

● Design and develop robust solutions for client onboarding, portfolio analytics, tokenized security issuance, authentication, and security

● Build solutions to integrate with APIs of external solutions providers including crypto custodians, exchanges, fund admins etc.

● Architecting and building frontend features in React.js

● Ensuring a highly performant and responsive UI

● Help maintain existing codebase, infrastructure, test coverage, and documentation

● Communicate requirements effectively within and across teams

● Independently work and lead project initiatives in a fast paced environment

Requirements

● 5+ years of work experience as a Senior Software Engineer or similarly senior member of a fast scaling company, ideally building products from ideation to launch with a strong engineering team. Web3 based experience preferred.

● Have experience in rapid prototyping of features across various products. Demonstrable open source contributions and experience with Git advantageous.

● Professional experience with Python, Javascript, Typescript, or Go

● Must have experience building and/or integrating with RESTful APIs

● Working knowledge of Django, FastAPI, or React.js and Redux

● Working knowledge various frontend frameworks and languages such as HTML, CSS

● Experience monitoring and scaling microservice-oriented systems

● Familiarity with websocket architecture and implementation

● Experience working with cloud-native AWS infrastructure and/or Kubernetes

● Team-building and technical leadership experience

● Being nimble and reacting quickly to changing business conditions

● BTech in Computer Science or a related field (Masters is a plus

Benefits

● Competitive salary, benefits & participation in the firm's ESOP program

● Be part of something exciting. Rare opportunity to come in early and build the next generation of institutional grade financial services.

● International work environment and flat organization. Possibility for relocation and international transfers mid-career

Tailor and Circus is an online ecommerce brand, looking for full-time a Ruby on Rails Developer to work with the brand on cutting edge technologies combined with an ability to be innovative while creating solutions in a team environment.

Roles and Responsibilities

• Perform all phases of software engineering including requirements analysis, application design, architecture design, code development, deployment and testing.
• Design and implement product features in collaboration with business and internal stakeholders.
• Design reusable components, frameworks, and libraries.
• Work very closely with architecture groups and drive solutions.
• Participate in an Agile/Scrum methodology to deliver high-quality software releases every 2 weeks through Sprints.
• Design and develop innovative solutions to meet the needs of the business.
• Review code and provide feedback related to best practices and improving performance.
• Troubleshoot production support issues post-deployment and come up with solutions as required.

Desired Candidate Profile

• 1-3 yrs of experience with Rails 4 or 5 framework.
• Development and delivery experience with Ruby (1.9, 2.x); Rails (4 or 5).
• Good to have HTML, CSS, AJAX, jQuery and excellent JavaScript knowledge.
• Good ability to understand, discuss, design, develop, test, document, and troubleshoot an interactive AJAX enabled Rails application that uses REST, SOAP, SQL.
• Knowledge on AWS is requirement.
• Experience on Heroku, Azure would be an added advantage.,
• A knack for writing clean, readable Ruby code
• Ability to integrate multiple data sources and databases into one system
• Understanding of fundamental design principles behind a scalable application
• Able to create database schemas that represent and support business processes
• Able to implement automated testing platforms and unit tests
• Proficient understanding of code versioning tools (e.g. Git, Mercurial or SVN)
• Familiarity with development aiding tools (such as Bower, Bundler, Rake, etc)
• Familiarity with continuous integration

Mandatory Requirements:

• Minimum 2-3 years coding experience on Ruby on Rails platform
• Experience in working with Ecommerce products

• Demonstrated skills in development of apps where you have performed some role in UI – APIs - DB 
• You have experience with coding in more than one programming language, preferably Java
• Experience with Angular (4 & above), ReactJS, Vue, MongoDB, APIs/Microservices. 
• Experience on building APIs
• You have a sound understanding of programming fundamentals
• Passion for developing robust software and writing maintainable code. 
• Keen interest in new technologies and their timely adoption. 
• Willingness to work extended hours as required to deliver projects. 
• Ability to work well in a team to deliver on team goals. 
• Flexibility under changing conditions and ability to multi-task between projects. 
• Fluent verbal and written communication skills.
• Knowledge/Experience of Python based stack will be an added advantage