Node Js(MongoDB) Backend Developer

Role Overview:

As a Backend Developer at LearnTube.ai, you will ship the backbone that powers 2.3 million learners in 64 countries—owning APIs that crunch 1 billion learning events & the AI that supports it with <200 ms latency.

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What You'll Do:

At LearnTube, we’re pushing the boundaries of Generative AI to revolutionise how the world learns. As a Backend Engineer, you will be building the backend for an AI system and working directly on AI. Your roles and responsibilities will include:

• Ship Micro-services – Build FastAPI services that handle ≈ 800 req/s today and will triple within a year (sub-200 ms p95).
• Power Real-Time Learning – Drive the quiz-scoring & AI-tutor engines that crunch millions of events daily.
• Design for Scale & Safety – Model data (Postgres, Mongo, Redis, SQS) and craft modular, secure back-end components from scratch.
• Deploy Globally – Roll out Dockerised services behind NGINX on AWS (EC2, S3, SQS) and GCP (GKE) via Kubernetes.
• Automate Releases – GitLab CI/CD + blue-green / canary = multiple safe prod deploys each week.
• Own Reliability – Instrument with Prometheus / Grafana, chase 99.9 % uptime, trim infra spend.
• Expose Gen-AI at Scale – Publish LLM inference & vector-search endpoints in partnership with the AI team.
• Ship Fast, Learn Fast – Work with founders, PMs, and designers in weekly ship rooms; take a feature from Figma to prod in < 2 weeks.

What makes you a great fit?

Must-Haves:

• 2+ yrs Python back-end experience (FastAPI)
• Strong with Docker & container orchestration
• Hands-on with GitLab CI/CD, AWS (EC2, S3, SQS) or GCP (GKE / Compute) in production
• SQL/NoSQL (Postgres, MongoDB) + You’ve built systems from scratch & have solid system-design fundamentals

Nice-to-Haves

• k8s at scale, Terraform,
• Experience with AI/ML inference services (LLMs, vector DBs)
• Go / Rust for high-perf services
• Observability: Prometheus, Grafana, OpenTelemetry

About Us: 

At LearnTube, we’re on a mission to make learning accessible, affordable, and engaging for millions of learners globally. Using Generative AI, we transform scattered internet content into dynamic, goal-driven courses with:

• AI-powered tutors that teach live, solve doubts in real time, and provide instant feedback.
• Seamless delivery through WhatsApp, mobile apps, and the web, with over 1.4 million learners across 64 countries.

Meet the Founders: 

LearnTube was founded by Shronit Ladhani and Gargi Ruparelia, who bring deep expertise in product development and ed-tech innovation. Shronit, a TEDx speaker, is an advocate for disrupting traditional learning, while Gargi’s focus on scalable AI solutions drives our mission to build an AI-first company that empowers learners to achieve career outcomes. We’re proud to be recognised by Google as a Top 20 AI Startup and are part of their 2024 Startups Accelerator: AI First Program, giving us access to cutting-edge technology, credits, and mentorship from industry leaders.

Why Work With Us? 

At LearnTube, we believe in creating a work environment that’s as transformative as the products we build. Here’s why this role is an incredible opportunity:

• Cutting-Edge Technology: You’ll work on state-of-the-art generative AI applications, leveraging the latest advancements in LLMs, multimodal AI, and real-time systems.
• Autonomy and Ownership: Experience unparalleled flexibility and independence in a role where you’ll own high-impact projects from ideation to deployment.
• Rapid Growth: Accelerate your career by working on impactful projects that pack three years of learning and growth into one.
• Founder and Advisor Access: Collaborate directly with founders and industry experts, including the CTO of Inflection AI, to build transformative solutions.
• Team Culture: Join a close-knit team of high-performing engineers and innovators, where every voice matters, and Monday morning meetings are something to look forward to.
• Mission-Driven Impact: Be part of a company that’s redefining education for millions of learners and making AI accessible to everyone.

📢 We’re Hiring: MEAN Stack Developer

Shift Timing: 10:00 AM – 7:00 PM

Location: Kolkata | Work Mode: Office | Immediate Joiner Preferred

We are looking for an experienced MEAN Stack Developer with strong knowledge of MongoDB, Express.js, Angular, and Node.js to join our dynamic development team.

Requirements:

• Minimum 4 years of experience in MEAN Stack Development.
• Strong proficiency in Node.js and Angular.
• Hands-on experience with MongoDB, Express.js, and RESTful APIs.
• Knowledge of Git or similar version control tools.
• Strong problem-solving and teamwork skills.
• Immediate joiner preferred.

Requirements:

• At least 4+ years of experience as a Node.js developer.
• Must have knowledge of at least one card game with rules.
• Must have experience in multiplayer games with Socket.io
• Must have good communication skills in English.
• Superb interpersonal, communication, and collaboration skills.
• Exceptional analytical and problem-solving aptitude.
• Great organizational and time management skills.
• Knowledge of Game development life cycle.
• Must be willing to do hands-on coding where required and perform regular code reviews etc.
• Knowledge of JavaScript, TypeScript, NPMs, ExpressJS, MongoDB, Socket.io and Redis.
• Familiarity with AWS infrastructure.
• Basic knowledge of front-end technologies.
• Strong understanding of git.

A Node.js job description typically outlines the responsibilities, qualifications, and expectations for a Node.js developer or related role. Node.js is a popular runtime environment for executing JavaScript on the server-side, making it an essential technology for web and application development. Below is a sample Node.js job description:

Job Title: Node.js Developer

Job Description:

Position Overview:

We are seeking a skilled Node.js developer to join our dynamic team. As a Node.js developer, you will be responsible for designing, implementing, and maintaining server-side applications using Node.js. Your primary focus will be on developing scalable, efficient, and high-performance applications while working closely with our front-end and back-end developers.

Responsibilities:

1. Develop server-side applications using Node.js and Express.js or other Node.js frameworks.
2. Collaborate with front-end developers to integrate user-facing elements with server-side logic.
3. Build and optimize APIs for mobile and web applications.
4. Implement security and data protection measures.
5. Troubleshoot and resolve software defects and performance issues.
6. Write clean, maintainable, and testable code.
7. Deploy applications on cloud platforms like AWS, Azure, or Heroku.
8. Stay up-to-date with Node.js and related technologies, and incorporate best practices and emerging trends into development processes.
9. Perform code reviews to ensure code quality and adherence to coding standards.
10. Participate in the development of technical documentation.
11. Collaborate with cross-functional teams to develop and maintain software applications.
12. Support and maintain the application infrastructure, including monitoring, scaling, and performance optimization.

Qualifications:

1. Proven experience as a Node.js developer or similar role.
2. Strong proficiency in JavaScript and its core concepts.
3. Experience with Node.js and server-side frameworks like Express.js.
4. Familiarity with front-end technologies such as HTML, CSS, and JavaScript.
5. Understanding of asynchronous programming and event-driven architecture.
6. Knowledge of database systems (e.g., MongoDB, PostgreSQL, MySQL).
7. Experience with version control systems (e.g., Git).
8. Basic knowledge of DevOps and cloud platforms.
9. Good communication and collaboration skills.
10. Problem-solving abilities and attention to detail.
11. Ability to work both independently and as part of a team.
12. Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent work experience).

Additional Skills (Preferred but not required):

• Experience with microservices architecture.
• Knowledge of containerization technologies like Docker and Kubernetes.
• Familiarity with test-driven development (TDD).
• Understanding of authentication and authorization mechanisms.
• Experience with continuous integration and continuous deployment (CI/CD) pipelines.

Company Culture and Benefits:

• We offer a collaborative and innovative work environment.
• Competitive salary and benefits package.
• Opportunities for professional growth and development.
• Flexible work arrangements and remote work options.

Key Responsibilities: 

• Rewrite existing APIs in NodeJS. 
• Remodel the APIs into Micro services-based architecture. 
• Implement a caching layer wherever possible. 
• Optimize the API for high performance and scalability. 
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required: 

• At least 2.5 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds. 
• Excellent hands-on experience using MySQL or any other SQL Database. 
• Good knowledge of MongoDB or any other NoSQL Database. 
• Good knowledge of Redis, its data types, and their use cases. 
• Experience with graph-based databases like GraphQL and Neo4j. 
• Experience developing and deploying REST APIs. 
• Good knowledge of Unit Testing and available Test Frameworks. 
• Good understanding of advanced JS libraries and frameworks. 
• Experience with Web sockets, Service Workers, and Web Push Notifications. 
• Familiar with NodeJS profiling tools. 
• Proficient understanding of code versioning tools such as Git. 
• Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms. 
• Should be a fast learner and a go-getter — without any fear of trying out new things Preferences. 
• Experience building a large scale social or location-base

3+ years of experience developing Backends using NodeJS. Should be well versed with its asynchronous nature, event loop, promises, and callbacks.

Node expressProficient in Node.js and working knowledge of JavaScript, JQuery, AJAX, HTML, CSS, and frameworks ( React.js)

Experience in Node JS MVC framework and Rest API frameworks like Express.

Experience developing desktops.

Experience in Mongo DB.

Familiarity with using AWS components.

Postman for documenting/testing APIs.

Position: PHP / MYSQL Developer & NodeJS / MongoDB Developer 

  -  The selected candidate is required to work on Core PHP or NodeJS/MongoDB. 

  -   Building web services for Mobile applications. 

   Selected candidate will be a part of product development team and have to manage both maintenance and enhancement projects. 

As a PHP Developer: 

1. You love an Agile work culture and deliver as per plan  
2. You're a lively person who's passionate on what you do  
3. You're a nonstop learner and enjoy sharing the learning to your juniors 
4. You're socially connected with the team and helping others team voluntarily. 
5. You're tech- expertise and effective in tools operation and automate the regular process  
6. You're someone who loves problem- working by seeing the occasion in every challenge and you enjoy learning from failures  
7. Honestly share your experience, feedback, challenges, learning and emotions for the day in your daily diary. 
8. Think of user needs instead of system needs 

Skills & Expertise we look for: 

1. Hands-on experience in Core PHP and MySQL Database 
2. Design and implement the Restful services. 
3. Familiar with HTML, CSS, jQuery, JavaScript 
4. Good knowledge in front-end frameworks such as Angular JS / React JS 
5. Good knowledge in gathering requirements, creating technical specifications, architecture documents and project planning 
6. Maintain and improve the performance of the applications.  
7. Should good in evaluate and implement new technologies to maximize development efficiency and improve the applications. 
8. Should good in communication skills and ability to work closely with diverse teams in a fast-paced environment. 
9. Should have some experience in integrating projects with third-party vendors 

The key aspects of this role: 

• Candidate with exceptional programming skills, problem-solving abilities and strong work  ethic. 
• The candidate has to work on custom programming and web application development for  Drupal. 
• Testing, maintenance and troubleshooting of existing company sites and resolving issues if  any. 
• Contributing ideas and efforts towards internal projects and working as part of a team to  find solutions on various problems. 
• Communicate technical ideas to business users and other teams (design, QA). • Collaborate with team members and to work independently when needed. • Eager to embrace current and emerging web technologies. 

To be the right fit, you'll need: 

• Experience of total 4+ years working on PHP and Drupal 7,8 Development (at least 2+ years  in Drupal 8) 
• Strong knowledge of MySQL, jQuery, HTML5, CSS 
• Experience with Drupal architecture, best practices and coding standards 
• Knowledge on Views, Services etc. 
• Experience in custom module and theme creation 
• Familiar with sub version control systems such as Git or SVN 
• Basic knowledge of environment setup for Linux distribution