Tech Lead

🚀Urgent Hiring : MERN Stack Developer

Location : Gurgaon

Work Mode : Work From Office (5 Days a Week)

Experience : 3 to 6 Years

Joining : Immediate Joiners Preferred

Job Description :

We are looking for a skilled and enthusiastic MERN Stack Developer to join our growing team in Gurgaon.

The ideal candidate will be responsible for developing robust web applications using MongoDB, Express.js, React.js, and Node.js.

You will work on both front-end and back-end components, ensuring high performance and responsiveness.

Key Responsibilities :

• Design, develop, and maintain scalable web applications using the MERN stack.
• Collaborate with UI/UX designers and backend developers to implement features.
• Write clean, modular, and reusable code.
• Integrate RESTful APIs and third-party services.
• Optimize applications for speed and scalability.
• Participate in code reviews, testing, and bug fixing.
• Manage version control using Git.

Required Skills :

• Strong proficiency in MongoDB, Express.js, React.js, and Node.js.
• Good understanding of JavaScript ES6+, HTML5, CSS3.
• Experience with Redux, React Hooks, and modern React ecosystem.
• Familiarity with RESTful APIs and JSON data exchange.
• Knowledge of Agile/Scrum methodologies.
• Experience with Git and version control tools.

Good to Have:

• Knowledge of TypeScript and Next.js.
• Experience with CI/CD pipelines and cloud services (AWS/Azure).
• Familiarity with unit testing frameworks like Jest or Mocha.

SleekSky is a fast-growing engineering studio that partners with venture-backed product teams to ship modern, cloud-native software. We’re hiring a Software Engineer to join one of our health-tech clients and help build a scalable, user-centric platform that’s making a real-world impact—without revealing any confidential project details.

What you’ll do

• Build and ship production-ready React features that feel fast, accessible and polished.
• Design and maintain Node.js / Express APIs that are clean, secure and well-documented.
• Leverage AWS services (EC2, Lambda, Elastic Cache / Redis, load balancers, etc.) to deliver reliable, high-performance solutions.
• Automate CI/CD pipelines with GitHub Actions and uphold strong Git workflows.
• Collaborate in an agile, fully remote team that values code reviews, knowledge-sharing and continuous improvement.
• Champion engineering best practices—testing, monitoring, and infrastructure-as-code—while keeping an eye on new tech that can raise the bar.

What you’ll bring

• 2+ years of hands-on experience in full-stack development.
• Proven expertise with React (hooks, component architecture, state management) and modern JavaScript/TypeScript.
• Solid experience building RESTful services in Node.js with Express (or similar).
• Familiarity with AWS fundamentals (EC2, Lambda, load balancing, caching layers).
• Comfortable with Git, GitHub and automated CI/CD pipelines (e.g., GitHub Actions).
• Self-motivated, proactive and enthusiastic about learning new technologies and sharing knowledge with the team.
• Clear, concise communication skills—vital for an all-remote environment.

Nice-to-haves

• Experience with infrastructure-as-code (Terraform, CloudFormation, CDK).
• Exposure to containerisation (Docker, ECS, EKS) or serverless architecture patterns.
• Prior work in health-tech or other regulated domains.

Why SleekSky?

At SleekSky, you’ll join a culture that puts people first—pair programming, regular knowledge-sharing sessions and a genuine passion for building things the right way. Expect autonomy, trust and a runway to grow your craft alongside enthusiastic peers.

Ready to level up with SleekSky? Submit your résumé on your preferred hiring portal and we’ll be in touch right away.

1. Develop and maintain server-side logic and APIs using Node.js.
2. Collaborate with front-end developers to integrate user-facing elements with server-side logic.
3. Design and implement scalable, secure, and maintainable backend solutions.
4. Work with databases such as MongoDB, PostgreSQL, or MySQL.
5. Optimize application performance and troubleshoot production issues.
6. Follow best practices for testing, deployment, and code quality.
7. Stay updated with the latest trends and technologies in backend

Strong knowledge in Laravel.

● Should be having excellent development expertise in programming PHP, AJAX, OOPS Concept, Architecture, MySql, Normalization, JavaScript/Jquery and MVC architecture with a commitment to performance and efficiency.

● Workwith frontend technologies including Vue.js/ Nuxt js (basic knowledge) or React.

● Thorough knowledge of languages Java script, HTML5, CSS3, Object Oriented programming and design patterns.

Looking for MERN stack developer who is an expert in MongoDB, Express, React and Node. He/She should be proficient in JavaScript and use HTML, CSS and JavaScript to handle front-end operations and JavaScript with Node. js to handle back-end operations.

Roles and Responsibilities:-

• Ability to translate Wireframes into functional web apps.
• Binding of UI elements to JavaScript object models
• Creating RESTful services with Node.js
• MERN stack developer must have proven experience in front & back-end development
• Work in a cross-functional team to deliver a complete user experience
• ReactJS NodeJS developer must know MongoDB, Express, Node.js, & React.
• 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
• MERN full stack developer must have the ability to wear many hats and learn new technologies quickly
• For MERN stack developer job, candidate must have good Knowledge of Node Debugging
• Understanding & proficiency in REST APIs.
• MERN stack developers should know Git Repository and Jira.
• Integration of data storage solutions [RDBMS, NoSQL DB]

Desired Candidate Profile:-

• Excellent in basic programming in any web technology Server and Client
• Like ReactJS/Node JS and Server-side scripts
• Basic knowledge in APIs, Micro Services
• Hands-On experience in Web development frameworks
• Hands-On in Database queries and concepts
• Understanding of performance testing and optimization techniques

Perks and Benefits:-

• No salary bar for deserving candidates.
• 5 days working.
• Paid and leave encashment facility available.

In Brief
Urgent Hiring • Re-location Required
Company Founded 2018 • 1-5 employees
Internet and Technology Startup • Bootstrapped

About us
Based out of Egypt and with presence in the GCC, Quesst Technologies is an early Internet and Tech Startup committed to helping thousands of nationals, residents and travelers in the MENA region, saving them time and effort in seeking reliable and credible knowledge within their communities and localities.

Quesst, the company's flagship platform, is a hyper-local Q&A and knowledge sharing platform that offers the necessary infrastructure for users seeking information to meet, share, engage and interact with one another and with verified subject matter experts.

Who we're looking for
Ideally the successful candidate will have experience in the start-up world and is in a position for a new challenge to take this company to the next level. Someone who is passionate about delivering a scalable and highly performant state-of-the-art cloud-based platforms built with technologies utilizing the JavaScript ecosystem, AI/ML and the latest web technologies to help solve exciting real world problems.

We are looking for an agile and entrepreneurial leader with strong people leadership and technical capability who has a problem-solving and analytical aptitude, excellent communication and presentation skills, is familiar with statistics, has a business acumen, independent, positive can-do attitude, and passion for excellence to the workplace.

Your role and our tech stack
Reporting to the founder, you will be expected to develop, deploy and oversee the execution of the tech strategy, product road-map and operations to ensure alignment with our businesses goals as we grow and scale. You will play a key part in the organisation's success, taking the current MVP and developing it further to move the company through to early stage funding and into profit.

Quesst's is built using React.js [Frontend], Node.js [Backend], PostgreSQL [DB], Amazon EC2 [Application Hosting], Amazon S3 [Media Storage Service], and Amazon SES [Email Sending Service]. You will be responsible for implementing full-stack features and collaborate with other team members to plan each sprint. You’ll be working across the entire system architecture and be responsible for designing, implementing and maintaining restful APIs, micro-services and databases.

Your key responsibilities

• Develop, improve and optimize the structure, quality, and extensibility of current software technologies, codebases and databases
• Prototype ideas to quickly access viability and iterate based on feedback from the team
• Build robust, web-based applications interacting with databases, file-systems and APIs
• Write custom code or integrate open source technologies as needed to find solutions to problems
• Design and build effective APIs; Create servers and databases for functionality
• Design client-side and server-side architecture; Design the data model ensuring scalability
• Accurately translate screen designs into functional front-end code; Develop features and with a mobile responsive design
• Write high-quality, extensible, testable and reusable code and libraries; Conduct code reviews and establishment of best practices
• Participate in planning activities; Estimate accurate stores for new features and design product features
• Help define processes and build tools as needed to scale the solution and the team
• Create and lead the product road-map; Proactively breakdown work, manage development sprints, identify risks and explore solutions
• Test software to ensure responsiveness and efficiency; Troubleshoot, debug and upgrade software; Aggressive problem diagnosis and creative problem solving
• Steer the business on timescales, prioritization and costs on competing development requirements
• Drive rigorous, and weekly product releases and lead required integration efforts with partners and/or third-party software services
• Guide the development in design, architecture and platform choices with strong focus on quality, speed, stability and scalability
• Identify and establish best practices and frameworks keeping in mind parameters of performance, responsiveness, security, maintainability, extensibility, and reuse; Work collaboratively in a lean and agile environment; Write technical documentation
• Recommend and implement new technologies, improvement of existing tech and set-up and future-proofing our technology that can help the company optimize efficiency and productivity and lead edge thinking and knowledge of innovative technologies i.e. AI, ML, blockchain, etc..

Your qualifications

• Minimum of BSc in Computer Science/IT/Electronics/Software Engineering or a comparable degree program
• Proven experience of 2-5 years of full-stack development of web applications; 2+ years building front-end interfaces with React.js & Redux workflows and 2+ years building back-end and maintaining server applications on Node.js, PostgreSQL and designing APIs
• Expert in traditional web-dev stack (HTML5, CSS3, JS); Strong in core JavaScript (ES5, ES6, ESNext, TypeORM and Typescript) and JS object model
• Experience with Linux environments and using the shell and command line terminals (preferred)
• Professional coding experience in object-oriented and scripting languages; Extensive experience building client-side web applications using React
• Proficient with:
  • JavaScript Frameworks (ReactJS/NextJS/Redux) and Node.js Frameworks (Express.js)
  • Client-side MVC frameworks such as NodeJS, React JS, NextJS, Redux, and AngularJS; Knowledge of isomorphic React
  • Configuration of various servers to run web application servers, databases, etc.; Web server technologies like Nginx, NodeJS, Apache, etc.
  • Frontend CSS frameworks like Bootstrap, Material UI and preprocessors like SASS and SCSS/LESS
  • Writing and integrating middleware; Experience with Redux Saga and Thunk
  • Architecture, design, queries of Relational databases (PostgreSQL, MySQL and other RDBMS)
  • Modern JS tooling (NPM, Webpack, Babel, ESLint and Prettier)
  • Developer tools, such as Visual Studio Code
  • Code versioning tools and Git version control systems (Github); Containerization systems (Docker)
  • Strong in data structures, XML technologies, JSON parsing
  • Caching frameworks and mechanisms, work-task queues, transactions and messaging queues (Redis, Memcached, RabbitMQ and others)
  • Building real-time applications using Web Sockets (Socket.io)
  • Web and mobile push notifications and cloud message APIs (GCM, APNS, OneSignal, etc.)
  • Setting up cron jobs and schedule task execution
  • Handling Services, RESTful, APIs, third party libraries and APIs (Google APIs, AWS, Zendesk, etc.)

• Experience with API gateway, distributed infrastructure architectures and applications tuning/profiling; Experience working with microservices
• User authentication and authorization between multiple systems, servers, and environments; Understanding of “session management” in a distributed server environment
• Experience with REST API and web service construction, integration and architecture and working with remote data via REST and JSON
• Knowledge of modern authorization mechanisms, such as JSON Web Token, Authentication and Security Technologies
• Familiarity with building secure systems (OWASP secure coding practices or similar)
• Architect and cloud-deploy applications on AWS and other cloud providers
• Deep understanding of Test-Driven Development (TDD)
• Build and manage end-to-end and UI tests; Experience writing tests (unit, integration, functional, etc.), and using testing frameworks
• Build third-party integrations like Slack, Stripe, Google and supporting their workflow
• Provision DevOps tooling with continuous integration; Build modern Front-end build pipelines and tools
• Contribute to API documentation including API description languages like Swagger; Document and diagram functional flows and architectures
• Experience in building rich PWA applications; Experience in responsive design, cross browser compatibility and website performance
• Understanding of how browsers and DOM work; Understanding and experience with asynchronous processing, partial page refresh, DOM traversal and manipulation
• Expert level using Web Analytics tools (Google Analytics and others); Experience with open source software development
• Experience with localization and internationalization of applications (working with multi-site setups, multi-language, i18n, etc.)

Some desired extras and good to have skills

• Knowledge of cyber-security, malware analysis, threat detection and/or sandboxing technology
• Preferably has knowledge of working in big data (Spark, Kafka, Hadoop) and machine learning ecosystems
• Strong background in security and data analytics and on-premise data experience
• Experience and familiarity with:
  • Architecture, design, queries and aggregation of NoSQL databases (MongoDB, Cassandra and others)
  • Elasticsearch and ELK stack
  • Developing integrations for global OTAs
  • OpenAPI
• Knowledge of multiple backend languages and framework

We offer you

• A unique entrepreneurial opportunity to build something from the ground up and scale it up to a major regionally recognizable brand
• A great learning curve in a collaborative environment with no barriers for initiatives
• Leading compensation package including salary free of local taxes, accommodation allowance for local hire or shared accommodation for international hire, free medical care from company physician, free government healthcare membership, transport allowance, paid airfare to the country of origin, paid leave and end of service according to local labor law.

Your professional career growth opportunities
As you help us grow Quesst, we will help you grow and professionally develop. Joining us at this stage, you will have the opportunity to be part of the core team if you prove you have what it takes and will be given the opportunity to:

• Lead and develop a technical strategy for the company, which involves goal setting, discussing options, and analyzing risks with the management team, CEO and board members
• An opportunity to build and manage a business unit from scratch and scale it up to success at a regional level
• Attract and retain top tech talent, mentor and manage the team as it grows
• Develop and manage KPIs for the tech team and create a challenging work environment

Have we caught your attention?
Send us your application including your resume, salary expectations and earliest starting date.

We’re looking forward to your application!