


Enguru is India’s leading destination for online learning English, with over 4 crore learners who have used our products. enguru caters to multiple audiences, including adult and children learners looking to learn English through live group and/or personal classes.
About the role
You will get to lead backend development across the enguru product suite, including our spoken English app for adults and spoken English app for kids amongst others. You will work closely with other engineers and product managers to help optimise the architecture across our apps.
Desired Experiences & Skillsets
- Experience with Python/Django and worked with &
- End-to-end expertise in web application
- Strong understanding of structured & unstructured databases
- Proficient with JS Frameworks
- Dev-ops experience around handling deployments &
- Led and/or collaborated closely with team members
Proficiency with tools such as
- Python
- Django
- Rest APIs (and RESTful API principles)
- Angular
- React
- mongoDB
- AWS
- Docker

About Enguru (Kings Learning Private Limited)
About
enguru is a mobile app that is revolutionizing English learning across Asia. With over 40 million users, enguru helps young adults improve their fluency and confidence through live online classes & gamified levels. We have onboarded 400+ teachers to date & our group classes consistently demonstrate strong learning outcomes for students.
In 2022, enguru was acquired by US-based Open English, the leading English learning platform in Latin America & Europe. With Open English’s support, we will increase our teacher & student base, expand our curriculum & further improve our content. With an immediate focus on India, enguru will also expand to South-East Asia over the next few years.
This is an opportunity to help build a high-quality, affordable English learning program for young adults across India. Enguru is entering a high growth phase with backing from an established player in the market & we are looking for ambitious, self-motivated individuals to join the team!
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About Vijay Sales
Vijay Sales is a leading eCommerce and retail brand delivering exceptional experiences to customers across India. Leveraging technology to enhance shopping experiences, we are on a mission to create seamless omnichannel platforms and innovative solutions for our customers. Join our dynamic team to shape the future of retail technology.
Role Overview
As a Lead Backend Engineer, you will drive the development and optimization of robust backend systems for our products built on the MERN (MongoDB, Express.js, React, Node.js) stack. You'll lead a talented team of developers, design scalable architectures, and ensure the seamless integration of backend functionalities with our frontend systems.
Key Responsibilities
- Lead the design, development, and deployment of backend systems for Vijay Sales' products.
- Architect scalable, secure, and high-performance APIs and microservices.
- Mentor and guide a team of backend developers, ensuring best practices in coding, architecture, and DevOps.
- Collaborate with cross-functional teams, including frontend engineers, DevOps, and product managers, to deliver end-to-end solutions.
- Optimize database structures and queries for performance and scalability.
- Implement and oversee CI/CD pipelines to streamline deployment processes.
- Troubleshoot and resolve performance bottlenecks, security issues, and other technical challenges.
- Stay updated on industry trends, tools, and technologies to continuously improve our stack.
Skills and Qualifications
Must-Have:
- Proven experience as a backend engineer with expertise in the MERN stack (Node.js, Express.js, MongoDB).
- Strong understanding of RESTful APIs and GraphQL.
- Proficiency in database design, indexing, and optimization (MongoDB is preferred).
- Hands-on experience with containerization tools like Docker and orchestration platforms like Kubernetes.
- Strong knowledge of authentication/authorization frameworks (JWT, OAuth2).
- Experience with cloud platforms like AWS, GCP, or Azure.
- Proficiency in DevOps practices, including CI/CD pipelines and version control systems (Git).
- Excellent problem-solving skills and a proactive attitude toward innovation.
Nice-to-Have:
- Experience in building scalable eCommerce platforms or omni-channel systems.
- Knowledge of front-end technologies (React.js) for seamless backend integration.
- Familiarity with message brokers.
- Serverless and Micro Architectures
- Exposure to AI/ML-driven applications for personalization and recommendation engines.


Must Have Skills:
1. Experience with the .NET framework and .NET Core technologies: C#
2. Writing and consuming REST API/Web API in .Net framework, .Net Core
3. Must have excellent knowledge in Azure hosting services
4. Good knowledge of Trouble shooting, Azure Hosting, maintaining and performance tuning
5. Knowledge of Frontend framework (React), If not then Angular, or Vuejs etc
6. Excellent Aptitude, Attitude and Communication Skills
7. Strong understanding of OOPS Concepts
8. Strong knowledge of Unit Testing
9. Excellent knowledge and working experience in Microservice Architecture
10. RDBMS Concepts, MS-SQL Server
11. Writing & Optimizing SQL Queries for best performance
12. Able to manage release by mean of CI/CD pipeline to deploy applications in Azure
13. Well versed of code review and code scanning tools
Good to have Skills:
1. Knowledge of HTML, Bootstrap, CSS, Responsive Design
2. Entity Framework/LINQ, MVC
3. Strong understanding of current design patterns & best practices
4. Knowledge of Agile methodology and JIRA
5. Knowledge of Electron is a plus
Key Responsibilities:
1. Work with Scrum Team to prioritize tasks and ensure deadlines are met
2. Communicate and actively participate in client call and understand requirements
3. Convert design and architecture to code using best practices
4. Provide expert level knowledge and guidance on modern software engineering techniques and methodologies for code reviews
5. Demonstrate expertise in a variety of software concepts (object-oriented design), practices (design patterns), and procedures (troubleshooting defects)
6. Able to troubleshoot and debug the code, write code with best coding practice and perform unit & Integration testing
7. Collaborate with the technical team to build and migrate applications in Azure
8. Test and update application so that it can be used for cross web browsers
9. Use and set-up CI/CD pipeline
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:
- Develop server-side applications using Node.js and Express.js or other Node.js frameworks.
- Collaborate with front-end developers to integrate user-facing elements with server-side logic.
- Build and optimize APIs for mobile and web applications.
- Implement security and data protection measures.
- Troubleshoot and resolve software defects and performance issues.
- Write clean, maintainable, and testable code.
- Deploy applications on cloud platforms like AWS, Azure, or Heroku.
- Stay up-to-date with Node.js and related technologies, and incorporate best practices and emerging trends into development processes.
- Perform code reviews to ensure code quality and adherence to coding standards.
- Participate in the development of technical documentation.
- Collaborate with cross-functional teams to develop and maintain software applications.
- Support and maintain the application infrastructure, including monitoring, scaling, and performance optimization.
Qualifications:
- Proven experience as a Node.js developer or similar role.
- Strong proficiency in JavaScript and its core concepts.
- Experience with Node.js and server-side frameworks like Express.js.
- Familiarity with front-end technologies such as HTML, CSS, and JavaScript.
- Understanding of asynchronous programming and event-driven architecture.
- Knowledge of database systems (e.g., MongoDB, PostgreSQL, MySQL).
- Experience with version control systems (e.g., Git).
- Basic knowledge of DevOps and cloud platforms.
- Good communication and collaboration skills.
- Problem-solving abilities and attention to detail.
- Ability to work both independently and as part of a team.
- 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.

- Designing scalable systems for high load.
- Defining and improving the development processes which includes implementation and Quality Assurance as well
- Architecting complex scalable systems with a keen eye towards performance, security and availability while also taking on a super hands-on role towards implementation
- Spearheading all inbound and outbound API integrations to build the most robust and scalable integration platform in the B2B Retail space.
- Working on interesting technical challenges in a product centric and open-source driven environment.
- Using open source as much as possible, and blogging about cool things that you learnt and built.
What you need to have:
- B.Tech /B.E.; Any Graduation
- Strong relational DB experience preferred
- Must be very much in touch with backend coding and want to do it everyday
- Our stack is primarily built around Node (Loopback), Mongo and ElasticSearch.
- Deep familiarity with Git and basic working knowledge of DevOps (Server and DB config, Docker, Kubernetes etc) is strongly preferred.
- Deep knowledge of NodeJS, PHP, MongoDB and MySQL.
- The role requires a good knowledge of Algorithmic Design and Architecture, Data structures, OOPS Concepts, serverless architectures and complex problem solving skills.
- You will help set a very high bar on code quality.
- We have started the transition towards micro services, one of your core responsibilities is ensure micro services are used wherever it makes sense
- Strong development experience in Core Java, J2EE, Spring Boot, Oracle SQL/PLSQL and App servers like WebLogic, JBOSS, Unix
- Good Knowledge of SOAP and REST API
- Should have knowledge in SOLID Principles & Design Patterns
- Should have working experience in UI like JSF, JSP, Html, CSS and Javascript / Jquery
- Experience with full-lifecycle development (i.e. design, coding, testing, debugging, etc.)
- Working experience to fix common vulnerabilities and security threat in SOA\Microservices applications
- Knowledge in OWASP Standards and Working knowledge in fixing security issues, data encryption and cryptography.
- Prior experience and knowledge of security tools like Fortify, Sonatype and webInspect is a plus
- Good to have knowledge and working experience in Angular JS
- Translate business requirements into detailed specs/designs
- Design thinking while arriving at solution
- Strong technical troubleshooting, diagnosing and problem-solving skills
- Ability to work with distributed teams in a collaborative and productive manner
- Solving complex business and workflow issues with solid scalable technical solutions
- Must be a self-motivated, proven performer who enjoy challenging assignments in a high-energy, fast growing workplace
- Agility and ability to adapt quickly to changing requirements and scope and priorities
- Good in communication, both written and verbal
- Should have Agile scrum experience.
- Team Player with very good attitude
- Attention to detail and focus on quality
- Knowledge in financial services domain is a plus
- Good to have knowledge on Static AppSec Testing (SAST) and Dynamic AppSec Testing (DAST)


Strong expertise in AWS architecture, deployment and coding using Python and AWS Lambda functions. She/ he should also have experience with NOSQL database like MongoDB/ DynamoDB and exposure to Machine Learning. She/ he should be familiar with Ajax calls, interaction with API using JSON files and xml.
Knowledge of testing tools like JMeter and Selenium and programming languages like Javascript and Dot Net will be a big advantage.
The person should be able to guide junior resources, perform code reviews and solve performance issues as required.
Job Description for NodeJS/Backend Developer (2 - 4 years experience ) :
Responsibilities:
1. Writing reusable, efficient code.
2. Implementation of security and data protection.
3. Development and design of high performant APIs and implementing server side logic.
4. User authentication, DB Schema design etc.
Skills and Qualifications:
1. Javascript
2. Typescript
3. Object oriented programming
4. Express and Mongo DB.
5. AWS and basic devOps
Other Tools:
1. Git and other development tools.

- Have proven experience of working on back-end web frameworks like RoR (preferable) or Python/Django or Node.js
- A good command over at least one JavaScript frameworks like React.js, Vue.js or Angular
- Be excellent in understanding of relational database structures, have knowledge of unstructured databases (NoSQL) will be an added advantage
- Possess expertise in object-oriented design, unit testing, integration testing, data structures, algorithms, scalable APIs, etc.
- Have knowledge of working on cloud technologies and exposure of AWS services (EC2, RDS, S3, etc)
- Have the ability to work in a fast-paced environment and make pragmatic engineering decisions in a short amount of time
- Have an Understanding of the - Agile- behavior and reflection of the same







