About Us
Classplus is India's largest B2B ed-tech start-up, enabling 1 Lac+ educators and content creators to create their digital identity with their own branded apps. Starting in 2018, we have grown more than 10x in the last year, into India's fastest-growing video learning platform.
Over the years, marquee investors like Tiger Global, Surge, GSV Ventures, Blume, Falcon, Capital, RTP Global, and Chimera Ventures have supported our vision. Thanks to our awesome and dedicated team, we achieved a major milestone in March this year when we secured a “Series-D” funding.
Now as we go global, we are super excited to have new folks on board who can take the rocketship higher🚀. Do you think you have what it takes to help us achieve this? Find Out Below!
What will you do?
- Connect the dots between business goals and consumer problems through product development
- Solve the most challenging problem of scaling and business logic
- Design and develop services using test driven development with near 100% code coverage
- Develop and deploy services continuously using CI/CD on a daily basis
- Identify and own meaningful metrics for success and move them dramatically.
- Prepare and present management updates on key initiatives. Communicate clearly at all levels in the organization.
- Conduct multivariate experiments to constantly validate hypotheses and bash all the myths
You should apply, if you
- Display expertise: Have strong proficiency with Nodejs, My SQL, MongoDB and Caching and with code versioning tools, such as Git
- Can improvise: Understand the nature of asynchronous programming and its quirks and workarounds
- Showcase all round knowledge: Understand accessibility, security compliance, user authentication, and authorization between multiple systems, servers, and environments
- Can simplify: Can integrate multiple data sources and databases into one system. This also includes creating database schemas that represent and support business processes, and can implement unit tests
- Can figure out the basics: Understand fundamental design principles behind a scalable application
Being a Part of the Clan!
At Classplus, you’re not an “employee” but a part of our “Clan”. So, you can forget about being bound by the clock as long as you’re crushing it workwise😎. Add to that some passionate people working with and around you, and what you get is the perfect work vibe you’ve been looking for!
It doesn’t matter how long your journey has been or your position in the hierarchy (we don’t do Sirs and Ma’ams); you’ll be heard, appreciated, and rewarded. One can say, we have a special place in our hearts for the Doers! ✊🏼❤️
Are you a go-getter with the chops to nail what you do? Then this is the place for you.

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Job Title : Backend / API Developer - Python (FastAPI) / Node.js (Express)
Location : Remote
Experience : 4+ Years
Job Description :
We are looking for a skilled Backend / API Developer - Python (FastAPI) / Node.js (Express) with strong expertise in building secure, scalable, and reliable backend systems. The ideal candidate should be proficient in Python (FastAPI preferred) or Node.js (Express) and have hands-on experience deploying applications to serverless environments.
Key Responsibilities :
- Design, develop, and maintain RESTful APIs and backend services.
- Deploy and manage serverless applications on Cloudflare Workers, Firebase Functions, and Google Cloud Functions.
- Work with Google Cloud services including Cloud Run, Cloud Functions, Secret Manager, and IAM roles.
- Implement secure API development practices (HTTPS, input validation, and secrets management).
- Ensure performance optimization, scalability, and reliability of backend systems.
- Collaborate with front-end developers, DevOps, and product teams to deliver high-quality solutions.
Mandatory Skills :
Python (FastAPI) / Node.js (Express), Serverless Deployment (Cloudflare Workers, Firebase, GCP Functions), Google Cloud Services (Cloud Run, IAM, Secret Manager), API Security (HTTPS, Input Validation, Secrets Management).
Required Skills :
- Proficiency in Python (FastAPI preferred) or Node.js (Express).
- Hands-on experience with serverless platforms (Cloudflare Workers, Firebase Functions, GCP Functions).
- Familiarity with Google Cloud services (Cloud Run, IAM, Secret Manager, Cloud Functions).
- Strong understanding of secure API development (HTTPS, input validation, API keys & secret management).
- Knowledge of API design principles and best practices.
- Ability to work with CI/CD pipelines and modern development workflows.
Preferred Qualifications :
- Strong knowledge of microservices architecture.
- Experience with CI/CD pipelines.
- Knowledge of containerization (Docker, Kubernetes).
- Familiarity with monitoring and logging tools.
Context for the Candidates:
Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.
Key Discussion Points:
• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?
• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.
• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?
• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?
• Share best practices for gas optimization, contract upgradability, and backend scalability.
Evaluation Criteria:
1. Technical Knowledge:
• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.
• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).
• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.
2. Problem-Solving and Integration Skills:
• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.
• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.
3. Experience and Expertise:
• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.
• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.
4. Innovation and Critical Thinking:
• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.
• Discussion on the future potential of blockchain technology and how the tech stack can evolve.
5. Communication and Team Collaboration:
• Clear articulation of technical challenges and how to address them in a team setting.
• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.
Senior Software Engineer (Java)
We are looking for a Senior Software Engineer - Java
If you're a creative problem solver who is eager to develop amazing products and hungry for a new adventure, a word class workplace is waiting for you in the heart of Kolkata.
An exhaustive list of expectations :
✓ Design and implement cutting-edge applications
✓ Participate in code reviews and application debugging and diagnosis.
✓ Practice modern software development methodologies such as continuous delivery, and scrum.
✓ Collaborate with product managers and engineers to build scalable systems enabling innovative ordering experiences.
Requirements -
✓ Knowledge and 5+ years of experience in developing Java applications
✓ A completed technical degree in Computer Science or any related fields.
✓ Profound knowledge and working experience with Java Frameworks (Springboot) and SQL databases.
✓ Solid experience in the design and implementation of Restful APIs and design patterns.
✓ Strong knowledge in Core Java, REST , Spring Framework, Spring Boot Microservice , JPA (e.g. Hibernate, OpenJPA, etc.) , Docker, Jenkins, ELK Stack
✓ Experience working with NoSQL Technologies and interest in Elasticsearch, and Microservices architectures.
✓ Curiosity, out of box problem-solving abilities, and an eye for detail.
✓ Passion for clean code
What really makes us interested in you - You are self-motivated. You think like an entrepreneur, constantly innovating and driving positive change, but more importantly, you consistently deliver stupendous results.
Number of position – 3
Job Location – kolkata, Sector 5
knowledge of Java and Spring.
• Familiarity with:
• SQL and noSQL databases
• Kubernetes, Docker, Helm
• Message/Streaming Technologies: Kafka, Kinesis, JMS, etc
• Unix Shell Scripting
• Microservices Architecture
• AWS, GCP, or Azure
• Experience in modern software development methodologies and technologies:
Scrum, Jira, Git
• Ability to handle full application development cycle from requirements to
production.
• A dedication to positive team collaboration
| • 3+ years development and delivery experience with Java, Springboot, Micriservices, JPA and from reputable institutes • Solid experience with application frameworks such as Springboot and strong familiarty with micro services architecture and design patterns • Familiarity with databases like MySQL, MongoDB, Redis etc • Hands-on experience in analysis, design, coding, and implementation of complex, custom-built applications • Exposure to CI/CD using Gitlab, Jenkins preferred • Familiarity with Docker, Kubernetes, EFK Stack is preferred • Broad knowledge of web standards relating to APIs (OAuth, SSL etc.) • Exposure to product development is preferred • Understand Architecture Requirements and ensure effective design, development and maintenance of multiple micro services in Java Springboot deployed in cloud within containers consuming data present in relational as well as NoSQL databases. o The microservices shall expose APIs which allow ease of integration with variety of client apps o Microservices should handle a scale of thousands of requests per second • Develop communication patterns between microservices which are efficient, lightweight and secured using Kafka • Debugging issues on a live setup • Lead a small team of engineers • Create test cases and technical documentation • Maintain a high level of code quality and consistency by adhering to and enhancing the coding standards, design methodology and programming practices |
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- Design and build advanced high-quality applications in .Net,.Net Core, Azure or AWS. hands on programming on C#, Web API, NOSQL DB and Azure, AWS.
- Knowledge of software development life cycle.
- Able to handle and manage the projects independently.
- Should be hands on developer and write production level code flawlessly
- Will be involved in client interactions and gathering project requirements, suggest best solutions considering NFRs insights
- Someone with an ability to ensure the performance, quality, and responsiveness of applications.
- Ability to work within a rapidly evolving environment.
- Eager to learn and adapt to new technologies.
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- Help maintain code quality, unit test cases, documentation, etc
Job Description
Viaan Industries Limited is looking for a Software Developer who is motivated to combine the art of design with the art of programming.The ideal candidate for this position will have a broad technical skill set and extensive experience in this industry. As a result, the candidate should be able to design, develop, test and deploy the products required for the company's needs. Moreover, the candidate should be able to work with other developers in determining product strategy.
Responsibilities
- Own the product : Design, Develop & Deploy
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Required Skills
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