


Title
Full Stack MERN/ MEAN Tech Lead
Location
Bangalore
About the company
With over a decade of experience, we specialize in crafting bespoke integration solutions and empowering businesses across the globe with a combined approach to emerging technology. We use cutting edge enterprise platforms - Microsoft, Salesforce, SAP and more Since our establishment in 2004, with our headquarters located in Tampa, USA, eCosmos has been extending global reach and domestic support to a diverse range of organizations, from start-ups to Fortune 500 companies
. Job Summary:
The Lead Developer provides technical expertise which requires a working knowledge of the technical infrastructure underpinning the applications. Plans, consults, and coordinates complex project assignments in the design, development and implementation of applications software. Works as part of a service or project team to implement complex technical solutions that meet business requirements. Responsible for contributing to the planning of the work programs and the review, development, and modification of best practices and technical solutions. Provides supervision to a team of Developers
. What success looks like in this role:
• You will lead a team of 5-10 developers building web apps with React, Node.js, Express and MongoDB, and mobile apps with React Native.
• Architect scalable and high-performance web and mobile apps using proven JavaScript stacks like MERN and MEAN
• Establish best practices for web and mobile development, code quality, testing, and CI/CD
• Proficiency in TypeScript is required to develop and maintain the front-end and back-end of our web applications.
• Plan sprints, assign tasks, and oversee code reviews, testing, and releases
• Troubleshoot and debug applications across the stack
• Manage technical debt and spearhead migrations to new libraries/frameworks when needed
• Hire and mentor developers and promote an engineering culture of learning and excellence.
Skills Required:
• Excellent communication skills, both written and oral.
• Quick problem-solving skills with exceptional aptitude and reasoning. • Good orator, presenter with influencing skills to manage and negotiate complex conflicting resolutions.
• Ability to frame ideas in words to provide a perspective and outcome from analyzing them.
• Experience in leading, managing, mentoring a team of junior developers.
You will be successful in this role if you have:
: • Bachelor's in engineering (B.E or BTech.), MCA.
• 5+ years' experience leading web and/or mobile engineering teams
• Deep expertise with JavaScript, Node.js, React, React Native, and MongoDB • Experience building web apps with MERN or similar stacks • Experience building mobile apps with React Native or similar frameworks
• Excellent verbal and written communication skills
• Comfortable with Agile methodologies like Scrum and Kanban
• Strong leadership skills and commitment to building a world-class engineering team
Compensation & Benefits:
For the right candidate, e-Cosmos is ready to provide an extremely competitive salary and added incentive bonus potential
. e-Cosmos provides an attractive and complete benefits package:
✓ Accidental Death & Dismemberment Insurance
✓ Training and certification assistance
✓ Employee referral bonus program
✓ Vertical and Lateral increments
ETHICS COMPLIANCE:
: e-Cosmos is firmly committed to conducting business in compliance with the letter and spirit of the law and other accepted standards of business conduct as reflected in the company's policies.

About e-cosmos solutions pvt. ltd.
About
Similar jobs

We are looking for two Sr FullStack (JS) Engineers with a keen eye for great design & UX. You will be responsible for the development of new software products (internal) and solving complex technical challenges for scale-ups and enterprise companies. You should excel in working with large-scale applications and frameworks and have outstanding communication and leadership skills.
Responsibilities
- Write clean, high-quality, high-performance and maintainable code
- Solve complex technical problems
- Perform an objective analysis of the problem statement and come up with an unbiased technical solution before writing a single line of code
- Coordinate cross-functionally to ensure the project meets business objectives and compliance standards
- Participate in and drive code reviews
Requirements
- Excellent attention to detail.
- Outstanding written and verbal communication skills.
- Demonstrated expertise of building production-grade and high-performance applications using ES2019/ES2020
- Expert at converting Figma, Sketch prototypes into pixel-perfect screens
- Highly proficient in React, Redux and TypeScript / ReasonML.
- Must be a self-starter who can work well with minimal-to-no guidance in a fluid environment
- Must be excited by challenges surrounding the development of highly scalable & distributed systems.
- Agility and ability to adapt quickly to changing requirements and scope and priorities
- Experience of working on massively large scale data systems in production environments
Preferred Requirements
- Production-level experience of designing a product for multiple international markets and languages (i18n, l10n).
- Bonus points for prior experience in Go & Python.
- Bonus points for open-source contributions, side-projects, blog posts and YT tech videos.
Qualifications
- BS in Computer Science (or related field)
- 4-5 years of relevant work experience

About Us:
MyOperator is India’s leading Cloud Telephony platform, empowering 40,000+ businesses with smarter communication solutions. We are scaling our engineering team to build high-performing, reliable, and scalable web applications. We’re looking for a React.js Developer with strong expertise in frontend engineering who can take ownership of building pixel-perfect, user-friendly, and performant web applications. Exposure to backend (Node.js) is a plus.
Key Responsibilities
Frontend (React.js – Primary Focus):
- Build modern, responsive, and high-performance UIs using React.js.
- Implement state management using Redux, MobX, or similar libraries.
- Create and optimize React Hooks (inbuilt & custom).
- Write unit tests to ensure product quality and maintainability.
- Apply ES6+ features, Webpack, and other modern JS tooling.
- Diagnose and fix UI/UX performance bottlenecks.
- Debug and resolve cross-browser compatibility issues.
Backend (Node.js – Secondary):
- Basic ability to build and integrate RESTful APIs with Node.js.
- Familiarity with frameworks like Express.js or NestJS.
- Understanding of authentication, session handling, and caching.
Databases & Tools:
- Work with SQL databases (mandatory).
- Exposure to NoSQL databases and ORMs is a plus.
- Use Git for version control and collaborative coding.
Qualifications
- 3+ years of professional software development experience.
- 3+ years of proven experience with React.js.
- Solid understanding of JavaScript (ES6+), HTML5, CSS3.
- Strong knowledge of state management, hooks, and UI performance optimization.
- Good problem-solving skills with a focus on clean, maintainable code.
- Exposure to Node.js and backend concepts (good to have).
Good to Have
- Experience with TypeScript.
- Knowledge of Next.js for server-side rendering.
- Familiarity with REST APIs and basic backend integration.
- Strong debugging and browser performance optimization skills.
Why Join Us?
- Opportunity to specialize in React.js while working on impactful products.
- Collaborative environment with full ownership of features.
- Work with cutting-edge frontend technologies at scale.
- Competitive compensation and career growth opportunities.

As FlexiLoans enters its next orbit of growth, we’re looking for people with the passion and hunger to make a real impact. In this role, you will develop modern user interfaces for rich internet applications using the latest front-end technologies, while also building, optimizing, and scaling our Node.js backend platform. You’ll collaborate with cross-functional teams to deliver new features, improvements, and fixes that keep up with our current and future scale.
What You Will Work On:
- Ensure high performance of both front-end and back-end applications.
- Collaborate with teams to implement new features, improvements, and fixes.
- Build, optimize, and scale our Node.js platform and applications.
- Implement secure applications and data protection measures.
- Integrate RESTful APIs and internal web services.
- Develop user interfaces using the latest front-end technologies.
- Write tested and documented JavaScript, HTML, and CSS code.
- Make design and technical decisions for AngularJS projects.
- Develop application code and perform unit testing using AngularJS, RESTful services, and Java technologies.
- Troubleshoot production issues and implement fixes.
- Work closely with product owners to define and shape tasks.
The Ideal Candidate:
- Strong expertise in HTML, CSS, and cross-browser compatibility.
- Good understanding of AJAX and JavaScript DOM manipulation.
- Experience with RESTful services and integrating 3rd-party services.
- Proficiency in JavaScript, with knowledge of Node.js and frameworks like Express, Hapi, Loopback.
- Experience with build tools like Grunt or Gulp.
- Expertise in modern JavaScript frameworks (AngularJS/React, jQuery, NodeJS).
- Familiarity with testing frameworks (Jasmine) and test runners (Karma).
- Hands-on experience implementing complex AngularJS applications, directives, controllers, and services.
- Strong problem-solving skills and critical thinking.
- Good teamwork, time-management, and communication skills.
- Experience running Node.js services at scale and building apps on AWS.
Qualification & Experience:
- 3–5 years of experience in both front-end (AngularJS) and back-end (Node.js) development.
- BS/BE/BTech degree in Computer Science or Engineering.


Job Title : MERN Stack Developer with Blockchain Expertise
Job Description :
We are looking for a dynamic and skilled MERN Stack Developer with a specialization in Blockchain to join our team. As a Blockchain MERN Stack Developer, you will be instrumental in crafting and implementing blockchain solutions, utilizing the MERN stack for both front-end and back-end development. Your role will contribute to the creation of secure, scalable, and decentralized applications.
Responsibilities :
- Develop and design applications based on blockchain technology using the MERN stack.
- Implement and integrate smart contracts and decentralized solutions into the development process.
- Collaborate with cross-functional teams to define project requirements and specifications.
- Create and maintain high-quality, reusable, and reliable code.
- Ensure the application of secure coding practices to uphold the integrity of blockchain solutions.
- Utilize front-end technologies, particularly React, to build engaging and user-friendly interfaces.
- Work closely with UX/UI designers to implement visually appealing and intuitive interfaces.
- Participate in code reviews, offering constructive feedback to team members.
- Identify and troubleshoot issues related to blockchain and MERN stack development.
- Stay informed about the latest trends, tools, and emerging technologies in blockchain.
Requirements :
- Proven experience as a Full Stack Developer with a specific focus on blockchain technology.
- Proficiency in the MERN stack (MongoDB, Express.js, React, Node.js).
- Experience with major blockchain platforms such as Ethereum, Hyperledger, or similar.
- Solid understanding of smart contract development and implementation.
- Familiarity with decentralized application (dApp) development.
- Knowledge of cryptography and principles of blockchain security.
- Familiarity with version control systems, such as Git.
- Strong problem-solving and analytical skills.
- Excellent collaboration and communication skills.
- Bachelor's degree in Computer Science or a related field (or equivalent work experience).
If you are passionate about both blockchain technology and MERN stack development and thrive in an innovative environment, we encourage you to apply or share your CV and contribute to our cutting-edge projects.
JOB DESCRIPTION
● Understanding of how to build performant, decoupled, testable, and maintainable code
● Sharing knowledge with teammates, and working collaboratively when you need help
● Advocate for improvements to product quality, security, and performance
● Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale web environment. Maintain and advocate for these standards through code review
● Provide constant vision and feedback to the product team during the product development and testing process
● Define epics and granular user stories, as applicable, based on the product
requirements
● Collaborate with QA teams in reviewing test plans for applicability and test coverage
● Participate in scrum ceremonies as the solution owner and assist in sprint planning, estimation, requirement analysis and review, taking a call on trade-offs and conflict resolution
● Prioritize requirements for the sprint and the release collaborating with the offering manager
● Manage and mentor junior developers
Qualification:
● 3+ years of experience in preferably in a tech startup
● Strong foundation in server-side programming languages like Java, Node
(TypeScript), Python
● Professional experience with relational and non-relational databases
(PostgreSQL, MongoDB etc.)
● Solid understanding and experience with REST API and GraphQL API
architecture
● Experience with containerization (Docker etc.) and cloud technologies
● Experience with automation and building CI/CD pipelines
● Demonstrated capacity to clearly and concisely communicate complex
technical, architectural, and/or organizational problems and propose thorough
solutions
● Experience with performance and optimization problems and a demonstrated
ability to both diagnose and prevent these problems
● Comfort working in a highly agile, iterative software development process
Nice to have:
● Excellent verbal and written communication skills
● Product company experience
● Knowledge of Project Management tools like Jira
● Knowledge of Data Science Applications & Statistical Analysis
● Understanding of microservice architecture
● Knowledge of Infrastructure as Code tools like Terraform


First 2 months
You will be expected to setup and integrate basic tools which will allow the internal teams to function. Examples of projects would be
-Execution of WMS, POS systems and any required integrations
-Setup basic data warehousing / reporting servers to promote data democracy internally.
Post 2 months
You will now be working on creating new tools / Apps which will give our business compounding benefits over time. These could range from B2B, B2C, B2B2C apps, internal enterprise tools. This phase will lay the true foundation of the company’s future tech capabilities.
Required Skillset
Below is an example set of technology skills we expect the candidate to have hands-on experience with. Knowledge of Python is mandatory:
Back-End
• Server-side languages like Python
• Database technologies like MongoDB and Relational Database (MYSQL,
POSTGRES, SQL Server etc.).
• Microservices framework
• Aws services-EC2, SES, S3, SNS
• Additional technologies (Scrapy, Celery)
Mobile Application
• React native
• ES6- java script
• Hybrid app development in (Android/IOS) Preferred (React-Native)
Front-End
• HTML/CSS
• React.js
• JavaScript (ES6, babel)
• NodeJS
• PWA (Progressive Web Application Development)

● Excellent problem solving skills and got right attitude to work in fast paced environments
● Bachelor’s degree in computer science or equivalent practical experience
● 2 to 4(SDE 2), 4 to 7(SDE3) years of experience in software development using
JavaScript / GoLang / Java / Scala and with data structures/algorithms
Preferred qualifications
● Strong in Object Oriented Programming and Design Patterns.
● You have experience of working closely with the product and design teams to deliver the product that materially impacts the business and improves the customer experience
● You follow SOLID principles and have experience with microservice architecture, have designed and implemented high performance scalable services/APIs.
● You have experience with component based architectures, PWA, Service workers, UI patterns and libraries most preferably ReactJS / NextJS
● Write client side high performant applications & develop prototypes
● Experience working with Node, NestJS / Express.
● Experience working with PostgreSQL, Redshift, Dynamo, Mongo and Cassandra databases.
● Experience working with RabbitMQ, Kafka.
● You constantly learn and adopt best practices at work, keeping in mind app performance, security, and scalability.
● You have experience working in distributed systems and built/designed systems to failover, event streaming, caching strategies
● You have experience with Docker/Kubernetes in AWS or any cloud computing platforms. And, are familiar with CI/CD processes.
Kudos if you already have:
● Great communication and team collaboration skills.



- Design the architecture and their solutions
- Define user stories and implement them using agile methodology
- Engage and manage a team of software engineers; including task planning and code reviews
- Have technical ownership of the product
Must have:
- Fullstack experience (React, Node JS, VU, Python)
- Expert in web technology (SaaS)
- Know-how of cloud technology
- Broad experience with multi-platform development tools and toolkits
- Experience in release engineering and configuration management
- Comfort with both client-side and server-side development
- Passion for agile
- Knowledge of CICD pipeline
Bonus if you:
- Have experience working in the healthcare industry
- Are enthusiastic about all things brain science and/or mental well-being
- We are a company that highly values the ability to communicate well. We all take turns at the blog roster, so writing experience and/or enthusiasm is appreciated
- Our core values encourage empathy and innovation, you are gold if you share these

Our ideal candidate is comfortable collaborating with Product Owners, UX and UI Designers, Data Scientists and senior technical team members to build sound solutions to complex business challenges. A Self-starter and problem-solver will thrive in this position.
You should be strong JavaScript developer comfortable in all areas of the software development lifecycle and have experience with React, Node, Mongo, MySQL and Express in a scalable production environment. Some Python and familiarity with AWS would be welcomed.
Focus Areas and Core Responsibilities
Accountable for day-to-day implementation and launch of product roadmap features and updates.
Collaborate with Data Science, Tech and UX teams to create systems design and information architecture based off of user stories and requirements. Ensure test cases are properly written.
Maintain and work on the continuous improvement and development of company tools.
Coordinate with dev ops and QA to ensure continuous integration and deployment of production ready code.
Skillset, Qualifications, and Experience
- 5+ years of web application development experience including strong working knowledge of JavaScript, ReactJS, NodeJS, Mongo and Express.
- Familiar with asynchronous programming and object-oriented programming best practices. Must have prior experience with MVC design pattern
- Experience with node and linux commands necessary for debugging installations and deployment locally and on cloud services such as AWS
- Strong familiarity with a variety of APIs and RESTful interfaces
- Familiar with various methods for performance optimization
- Ability to work with UX/UI team to create a frictionless user experience and pixel perfect web components and data visualizations
- Experience integrating security best practices into the SDLC
- Expert level Git, including branching and best practices to resolve merge conflicts
- 1+ years of Agile development experience
- Experience manipulating and working with data in a variety of forms: csv, xml, json, structured and unstructured
- Excellent communicator who can work independently and be a team player
- Passion for Technology: excitement for new technology, bleeding edge applications, and a positive attitude towards solving real world challenges
We are proud to be an Equal Opportunity/Affirmative Action Employer and committed to leveraging the diverse backgrounds, perspectives and experience of our workforce to create opportunities for our colleagues and our business. We do not discriminate in employment decisions based on any protected category.

