Full Stack Developer - MERN Stack

Key Responsibilities

• Design, develop, and maintain full-stack web applications using MongoDB, Express.js, React.js, and Node.js
• Build and optimise RESTful APIs and micro services
• Work closely with product managers, designers, and developers to deliver scalable solutions
• Write clean, maintainable, and testable code
• Ensure application performance, security, and responsiveness
• Mentor junior developers and contribute to code reviews

🔹 Must-Have Skills

• Strong hands-on experience with MERN stack (MongoDB, Express, React, Node.js)
• Proficiency in JavaScript (ES6+), HTML5, CSS3
• Experience with Redux / State Management in React
• Solid backend expertise with Node.js & Express.js
• Database design, queries, and performance tuning in MongoDB
• Good understanding of REST APIs, authentication (JWT, OAuth)
• Familiarity with Git, CI/CD pipelines, and Agile methodology
• Exposure to cloud platforms (AWS, Azure, GCP) is a plus

🎯 Preferred Skills

• Experience with TypeScript
• Knowledge of GraphQL, Docker, Kubernetes
• Unit testing with Jest / Mocha
• Experience mentoring or leading small teams

🎓 Education

• Bachelor's / Master's in Computer Science, IT, or related field

Job Title: Senior Blockchain Developer

Job Description:

We are seeking a highly skilled Senior Blockchain Developer to join our team. The ideal candidate will have extensive experience in Ethereum, Bitcoin, Solana, and related technologies, with a strong focus on smart contracts and node setup. The candidate should be proficient in Solidity using tools like Hardhat or Foundry, as well as possess expertise in NodeJS. Experience with Rust, and Golang is considered a significant advantage.

Responsibilities:

- Develop and deploy smart contracts on Ethereum, Bitcoin, and Solana blockchains.

- Configure and maintain blockchain nodes for optimal performance.

- Collaborate with cross-functional teams to integrate blockchain solutions into existing systems.

- Write clean, efficient, and maintainable code in Solidity, NodeJS, and other relevant languages.

- Stay updated on the latest developments and trends in blockchain technology.

- Contribute to the design and architecture of blockchain-based applications.

Requirements:

- Bachelor's degree in Computer Science, Engineering, or related field.

- Minimum of 3 years of experience working with blockchain technologies.

- Proficiency in Ethereum, Bitcoin, and Solana blockchains.

- Strong understanding of smart contracts and their implementation.

- Experience with Solidity using Hardhat or Foundry.

- Solid knowledge of NodeJS.

- Familiarity with Rust, Golang, and Hyperledger is a plus.

- Excellent problem-solving and analytical skills.

- Ability to work both independently and collaboratively in a fast-paced environment.

- Strong communication and interpersonal skills.

If you possess the required skills and are passionate about blockchain technology, we encourage you to apply for this exciting opportunity.

Join us in shaping the future of decentralized applications and blockchain solutions.

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.

• Implementation of the overall web architecture
• “Pixel-perfect” implementation of our approved user interface
• Design and deployment of our database
• Ensuring the entire stack is designed and built for speed and scalability
• Design and construction of our REST API
• Integrating our front-end UI with the constructed API
• Adhering to the continuous integration and deployment strategies.

Skills

• At least four years experience with:
• Writing HTML, CSS, and JavaScript. Being up on the latest practices is a must, e.g., HTML5, CSS3, JQUERY
• A relevant back-end programming language e.g., C# .NET, ASP.NET MVC, Entity Framework, ADO.NET, .NET Core
• Database design and management, including being up on the latest practices and associated versions
• Server management and deployment for the relevant environment preferably on Azure.
• Familiarity with a relevant and globally supported framework—both front-end and back-end, if necessary— e.g., Angular, React
• Ideally, familiarity with CSS preprocessors, bundlers, and associated languages/syntaxes/libraries
• Thorough understanding of user experience and possibly even product strategy
• Experience implementing testing platforms and unit tests
• Proficiency with Git or any other configuration management systems.
• Appreciation for clean and well-documented code
• Experience with third-party controls like Sync Fusion Controls / Telerik
• Bachelor’s in computer science or Equivalent Degree

You will be responsible for architecting, training the team and implementing your solution. You will be working closely with the Product Managers and the tech leads/developers to come up with high-quality, resilient, and highly performant applications.

• Design and develop SaaS-based applications based on microservices architecture.
• Work on core back-end and ensure it meets the performance benchmarks.
• Work on optimizing the middleware and backend technologies to ensure highest scalability.
• Work on best system design principles and ensure high availability.
• Designing and developing APIs for the front end to consume.
• Constantly improve the architecture of the application by clearing the technical backlog.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.

An enthusiastic individual with the following skills. Please do not hesitate to apply if you do not match all of it. We are open to promising candidates who are passionate about their work and are team players.

• Education - BE/MCA or equivalent.
• Overall 8+ years of experience.
• Agnostic/Polyglot with multiple tech stacks.
• Worked on open source technologies - NodeJS, Typescript, ReactJS, MySQL, NoSQL, MongoDB, ELK, Kafka, Redis.
• Good experience with Front-end technologies like JavaScript frameworks, ReactJS, AngularJS.
• Back-end exposure - good knowledge of building API.
• Efficient in building microservices in combining server & front-end.
• Knowledge of cloud architecture especially using AWS and its features.
• Should be completely hands on and have the ability to develop quick Prototypes.
• Good understanding of CMS.
• Will be responsible for the functional/technical track of a project.

You will closely work with the engineering team and support the Product Team of Empuls.

A wholesome opportunity in a fast-paced environment will enable you to juggle between concepts yet maintain the quality of content, interact, share your ideas, and have loads of learning while at work. Work with a team of highly talented young professionals and enjoy the benefits of being at Xoxoday.

A fast-growing SaaS commerce company based in Bangalore with offices in Delhi, Mumbai, SF, Dubai, Singapore, and Dublin. We have three products in our portfolio: Plum, Empuls, and Compass. Xoxoday works with over 1000 global clients. We help our clients engage and motivate their employees, sales teams, channel partners, or consumers for better business results.

We look forward to connecting with you. As you may take time to review this opportunity, we will wait for a reasonable time of around 3-5 days before we screen the collected applications and start lining up job discussions with the hiring manager. However, we assure you that we will attempt to maintain a reasonable time window for successfully closing this requirement. The candidates will be kept informed and updated on the feedback and application status.

Do you want to develop products and experiences that mean the world to your clients and their users? Do you want to work on transformative projects as opposed to minor tweaks to a product? Do you want to be exposed to work ranging from startups to Fortune 500 enterprises to global non-profits?

We are Finiteloop, a growing design and technology studio in Bangalore. We work hard to build grounded and exhilarating experiences for our customers and their users. Our design work dives deep into Design Thinking, Experience design, and Service design. On the technology side, we work on Solution architecture of large enterprise applications and, cutting-edge explorations on new technologies like Machine Learning and Blockchain.

We strive for client success and push our clients into thinking and doing more for their customer's experiences. All of us are self-driven individuals passionate about building products that deliver great experiences at scale. Our team is currently working on a wide variety of projects: communication design for safety culture on board cargo ships, mobile app for seafarer community, transforming how public radio can integrate with the digital world and, simplifying the user experience of oil and gas explorers.

We are looking for a person with excellent visual sensibilities with an ability to code jaw-dropping designs that make people feel like a part of the future. We want to look towards you as our Usability champion, especially when designing for accessibility. You will have to be self-driven, understand your brief and think more on it before executing it as per schedule. You will juggle couple of projects at the same time and we will create a space you follow your creative processes within these project constraints.

We have an extremely open culture that promotes questioning, honest critique and, quirky thinking. Over and above everything, we only can work with people who will do anything to follow the highest ethics of business and teamwork and a dedication to their craft.

Applications we want to work with you on:

• Digital applications and media (web or Mobile)
• Detailed component-level reusable UI libraries
• Applying micro interactions and creating components for the same.
• Developing user friendly, interactive, responsive web and mobile apps.

Things we would love to surprise us with:

• Independently design & develop new user-facing features
• Build reusable code and libraries for future use
• Optimise application for maximum speed and scalability on front-end side
• Collaborate with team members and key stakeholders
• Ensures latest technology standards, guidelines are utilized for development
• Assess & analyse web performance, come with resolution & causes and guide the team in implementation
• Guide and mentor team members
• Image authoring tools, to be able to crop, resize, or perform small adjustments on an image
• Enable and use automation tools to fast track development

Technologies & Tools we would want you to work on:

• ReactJS
• Angular
• HTML, CSS, CSS Pre-Processors
• NodeJS
• SEO, Accessibility
• Automated Unit & End-End tests
• React Native, Flutter

Some of our projects which you will get to work on: COVID-19 response | Service design exercise for reorganizing a $200mil company | Creating UX experience for products using Blockchain technology | Speculative design exercises for imagining the future | Creating an award-winning marketing website | Reimagining public radio digital experience

Write to us with any samples of work and a small note on why you would be interested to work with us.