Senior Backend engineer (Node.js)

Who You Are:

• You’ve built scalable, production-ready APIs in fast-paced environments, and are comfortable with the challenges that come with a growing startup.
• You understand event-driven architectures and have hands-on experience building real-time applications.
• You are fully capable of taking ownership of backend systems, from designing the database schema to writing efficient, maintainable code.
• You think beyond the code: optimizing performance, scalability, and security are as important as building new features.
• You’re comfortable troubleshooting complex issues, whether that’s API bottlenecks, database performance, or production issues.

Responsibilities:

• Design, implement, and manage a NestJS backend with a modular, scalable architecture that can easily handle real-time events and communication.
• Develop and maintain WebSocket services for real-time event-driven updates and ensure seamless communication across the system.
• Integrate RabbitMQ for reliable internal messaging, handling queues and ensuring event-driven workflows are efficient and fault-tolerant.
• Implement database management strategies using MongoDB, Redis, and Elasticsearch, ensuring efficient data handling, indexing, and optimization.
• Integrate with external APIs (JSON-RPC, XML-RPC, REST) to enhance system capabilities.
• Ensure high performance of the system by optimizing database queries, implementing caching strategies using Redis, and ensuring optimal indexing and data flow.
• Implement role-based authentication and authorization mechanisms using JWT, OAuth, and RBAC patterns within NestJS.
• Follow security best practices to ensure sensitive data is protected, credentials are stored securely, and the system is resilient to common vulnerabilities.
• Work collaboratively with cross-functional teams to ensure seamless integration between different services and technologies.

Must-Have Skills:

• Strong proficiency in Node.js and NestJS with TypeScript.
• Solid experience with MongoDB, Redis, and Elasticsearch for data storage and real-time data handling.
• In-depth knowledge of WebSockets and Socket.IO in NestJS Gateways, enabling real-time communication and updates.
• Experience with RabbitMQ for message queuing and asynchronous task handling.
• Strong understanding of authentication & authorization systems using JWT, OAuth, and RBAC (Role-Based Access Control).
• Expertise in optimizing APIs, including techniques for caching, improving database performance, and reducing latency.
• Familiar with API security best practices, including secure storage of credentials, encryption, and safeguarding sensitive data.

Key Skills:

• TypeScript, NestJS, WebSockets, Socket.io
• Redis, MongoDB, Elasticsearch, RabbitMQ
• API Optimization, JWT, OAuth, RBAC
• Real-time communication, Event-driven architecture

As a Node.js Developer, you will be responsible for:

Designing, developing, and maintaining server-side applications and systems using Node.js, a JavaScript runtime environment. Your expertise in backend development, JavaScript, TypeScript, and REST APIs will play an essential role in creating efficient and powerful server-side applications.

Responsibilities:

● Design and implement efficient, secure, and maintainable server-side code using Node.js.

● Collaborate with the front-end development team to integrate user-facing elements with server-side logic.

● Develop APIs for seamless data flow between the front-end and back-end.

● Optimize application performance and ensure high availability and scalability.

To succeed in this role – you should have the following:

● Minimum of 3-4 years of experience as a backend developer.

● Must have proven experience as a Back-End Developer, with a focus on Node.js.

● Proficiency in JavaScript, TypeScript, and related frameworks (Express.js, Hapi.js, etc.).

● Experience with RESTful API design principles.

● Experience with agile development methodologies.

● Familiarity with working with at least one of PostgreSQL or MongoDB.

● Familiarity with version control systems (Git)

● Strong communication skills and ability to work collaboratively in a team.

● Strong problem-solving skills and attention to detail.

Added bonus:

● Familiarity with frontend development technologies like HTML and CSS.

● Experience working with Docker, Github Actions, and other common CI/CD pipelines

● Knowledge about AWS components (S3, EC2, Cloudfront, Redis Clusters, etc.)

Education:

Bachelor's degree in Computer Science, Information Technology, or a related field

Skills: 

Strong knowledge of MYSQL/PostGreSQL; Knowledge of MongoDB, Redis, Couch DB is preferred. 

Expertise in application development, databases, version control, and deployment. Skill - Node.js, 

Experience of AWS or GCP - especially services such as Lambda or google app engine 

Solid grasp of Service-oriented architecture. Web Services implementation on a medium to large scale 

Solid understanding of scaling mobile app services. Having worked the backend of an Android app is preferred 

Culture: 

Ability to work independently with minimal supervision 

Happy to deal with, and contribute to, an environment of daily builds Has worked in small teams, is versatile. Work within short timelines and be receptive to business needs. Can work closely with Digital, Product, Operations teams. 

Desirable Social Attributes: 

Has contributed to one or more Open Source projects through own initiative. Has provided a high quality answer to a question posted on StackOverflow. 

Role: 

As a Software Developer who would work independently, the candidate is expected actively acquire problems and deliver solutions as well as guide the team technically. Such a problem solver would obviously be a self starter with a high level of curiosity rather than a programming language specialist. 

He/she would be required to produce software of the highest quality through self-discipline, clear and engaged communication, and attention to detail. The role would include custom web application development on (most typically on Node.js and PHP/Python), databases (most typically MySql and MongoDb), version control (github), testing (necessarily through test scripts written before code is written), daily builds and eventual deployment onto AWS or GCP. 

Attributes of the ideal candidate: 

Highly productive software developer with the proven aptitude to understand and apply technology 

Determination to succeed despite obstacles and challenges, and a positive attitude favoring achievement of goals over open-ended investigation 

Always learning, evolving, and sharing what you know 

Inspired by complex, varied problems and rapid change 

Open-minded, flexible, and curious about new and better ideas

• Experience in Web and Mobile Applications
• Agility and ability to adapt quickly to changing requirements and scope and priorities
• Experience in Java, Python.
• Deep understanding of data structures and microservices.
• Knowledge of Node.js
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Familiarity with front-end technologies
• User authentication and authorization between multiple systems, servers, and environments
• Interaction with multiple data sources
• Good understanding of SQL
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform.
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git .

Tech9 India is looking for a mid-senior software engineer who is an expert with Nodejs and MongoDB.  This is a great opportunity to work with a company that has a primary focus of making our customers happy by delivering value, without all the burdensome policies and rules that have become typical for outsourced software development companies.

If you are looking for a change this is what we can promise you:

• You will have challenging problems to solve
• You will have flexibility and autonomy to solve problems and deliver solutions
• We will provide a highly collaborative environment with skilled and super friendly teammates
• We will fully support you in developing software the right way
• We won't burden you with useless policies and procedures
• We will provide you the tools you need to do your job right

If this sounds attractive please apply! We'd love to talk to you!

Responsibilities:

• Work with cross-functional teams, using agile practices, write, debug and deliver code
• Produce solid, thoroughly tested features

Requirements:

• Mid level roles require at least 3 years of experience in Nodejs senior roles require at least 4 years of experience with Node.
• At least 3 years of experience developing in HTML and CSS
• Strong verbal and written communication skills
• Experience working with product managers and scrum teams to effectively translate business requirements into workflows 
• Demonstrated ability to remove problems and overcome roadblocks
• Cloud platform experience 
• Hands-on experience with APIs, microservices
• Multiple years of experience delivery solutions through an Agile delivery methodology
• Ability to understand complex systems and solve challenging analytical problems
• Ability to leverage multiple tools and programming languages to analyze and manipulate data sets from disparate data sources
• Strong problem solving skills and critical thinking ability

Node.js and frameworks available for it - Express, StrongLoop, etc
Understanding the nature of asynchronous programming and its quirks and workarounds
Integration of user-facing elements developed by front-end developers

front-end technologies - HTML5, and CSS3
Writing scalable, reusable, testable, and efficient code