
Job Description
- Designing system architecture, develop and maintain high performing & scalable services using Node.js frameworks.
- Extensively engage in iterative development model right from requirement analysis, estimation, development, testing & production support
- Mentor, groom junior developers and participate in code reviews
- Contribute towards building company’s coding culture
Requirements
- 3+ years of relevant industry experience in Node.js
- A deep understanding of JavaScript
- Experience working with SQL and NoSQL databases
- Experience with Unit and Integration tests
- Experience with CI/CD
- Experience with MathJax/Latex
- Experience with large scale video streaming
- Experience with ReactJS is a bonus

About ClassCast
About
About ClassCast : ClassCast is one of the fastest-growing ed-tech startups in India. We build next-gen suite of products for teachers and educational institutions. We drive digital transformation for some of the biggest stakeholders in the education industry with our solutions. We at ClassCast believe technology will serve as a backbone for accessibility of quality education in this country and are fully committed to build that, one step at a time. Come join us in our mission to transform how India learns, build scalable systems that touches millions of students, teachers and institutions.
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Job Title: Golang Developer
Location: Kolkata
Job Type: Full-time
Working Days: 5 Days (Rotational off)
About the Role:
We are seeking a skilled Golang Developer with experience in Golang, Node.js, WebSocket
communication, and API development. In this role, you will work closely with our development
team to design, develop, and maintain high-performance backend systems and real-time
applications.
Key Responsibilities:
Design, build, and maintain efficient, reusable, and reliable Golang code.
Develop scalable APIs and microservices.
Integrate and build real-time communication using WebSocket protocols.
Collaborate with frontend developers and other team members to establish objectives
and design more functional, cohesive systems.
Write clean, maintainable, and well-documented code.
Optimize applications for maximum performance, scalability, and security.
Participate in code reviews, contribute to team knowledge, and continuously improve
development processes.
Troubleshoot, debug, and upgrade existing systems.
Occasionally work with Node.js services and modules when needed.
Required Skills and Qualifications:
Min 3+ years of experience in backend development with Golang.
Solid understanding of Node.js and JavaScript/TypeScript.
Hands-on experience with WebSocket integration and real-time applications.
Strong knowledge of RESTful APIs, API design principles, and API documentation. Experience with relational and NoSQL databases (e.g., MySQL, PostgreSQL, MongoDB).
Good understanding of concurrent programming and microservices architecture.
Familiarity with cloud platforms (AWS, GCP, Azure) is a plus.
Knowledge of containerization tools like Docker and Kubernetes is a plus.
Strong problem-solving skills, attention to detail, and a proactive attitude.
- Looking for a highly capable Node.js developer to optimize our web-based application performance.
- Developing and maintaining all server-side network components.
- Ensuring optimal performance of the central database and responsiveness to front-end requests.
- Designing customer-facing UI and back-end services for various business processes.
- Qualification: Bachelor's degree in computer science, information science, or similar.
- Should have 4 years' experience as a node js developer.
- Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.
- Knowledge of front-end technologies such as HTML5 and CSS3.
- Superb interpersonal, communication, and collaboration skills.
- Exceptional analytical and problem-solving aptitude.
- Great organizational and time management skills.
- Salary is negotiable for right fit.
• Proficient in software development from inception to production releases using modern
programming languages ( Preferably Java, NodeJS, and Scala)
• Hands-on experience with cloud infrastructure, solution architecture on AWS or Azure
• Prior experience working as a Full-stack engineer building cloud-native, SaaS products.
• Expertise in programming and designing circuit breakers, the localized impact of failures,
service mesh, event sourcing, distributed data transactions, and eventual consistency.
• Proficient in designing and developing SAAS on Microservices architecture
• Proficient in building Fault tolerance, High availability, and Autoscaling for microservices
• Proficient in Data Modelling for distributed computing
• Deeps Hands-on experience on Microservices in Spring Boot and in large scale projects in
Spring Framework
• Fluency in cloud-native solution architecture; designing HA and Fault-Tolerant deployment
topologies for API Gateway, Kafka, and Spark clusters on cloud.
• Fluency in AWS, Azure, Serverless Functions in AWS or Azure and in Docker and Kubernetes
• Avid practitioner and coach of Test-Driven Development
• Deep understanding of modeling real-world scheduling and process problems into algorithms
running on memory and compute efficient data structures.
• We value Polyglot engineers a lot, hence experience in programming in more than one
language is a must, preferably one of Groovy, Scala, Python or Kotlin
• Excellent communication skills and collaboration temperament
• Articulation of technical matters to Business Stakeholders, and the ability to translate business
concerns into technical specifications.
• Proficiency in working with cross-functional team on refining initiatives to objective features.
Good To Have:
• Hands-on experience with Continuous Delivery and DevOps automation
• SRE and Observability implementation experience
• Refactoring Legacy products to microservices
SENIOR SOFTWARE DEVELOPER (BACKEND DEVELOPMENT):
We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade web applications.
You will be part of a talented software team that works on mission-critical applications. Java developer roles and responsibilities include managing Java/Java EE application development while providing expertise in the full software development lifecycle, from concept and design to testing.
Responsibilities
• Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Contribute in all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs are in compliance with specifications
• Prepare and produce releases of software components
• Support continuous improvement by investigating alternatives and technologies and presenting these for
architectural review
Requirements
• BS/MS degree in Computer Science, Engineering or a related subject from renowned (IITs, NITs, BITS etc) colleges
• Excellent aptitude, algorithmic and puzzle solving skills
• Proven hands-on Software Development experience
• Proven working experience of 2+ years in Java development
• Hands on experience in designing and developing applications using Java EE platforms
• Object Oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management, Multi-Threading etc)
• Good knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Experience in the Spring Framework
• Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT,
Spring MVC)
• Experience with agile development









