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Job Title: Backend Engineer - NodeJS, NestJS, and Python

Location: Hybrid weekly ⅔ days WFO (Bengaluru- India)

About the role:

We are looking for a skilled and passionate Senior Backend Developer to join our dynamic team. The ideal candidate should have strong experience in Node.js and NestJS, along with a solid understanding of database management, query optimization, and microservices architecture. As a backend developer, you will be responsible for developing and maintaining scalable backend systems, building robust APIs, integrating databases, and working closely with frontend and DevOps teams to deliver high-quality software solutions.

What You'll Do 🛠️ 

• Design, develop, and maintain server-side logic using Node.js, NestJS, and Python.
• Develop and integrate RESTful APIs and microservices to support scalable systems.
• Work with NoSQL and SQL databases (e.g., MongoDB, PostgreSQL, MySQL) to create and manage schemas, write complex queries, and optimize performance.
• Collaborate with cross-functional teams including frontend, DevOps, and QA.
• Ensure code quality, maintainability, and scalability through code reviews, testing, and documentation.
• Monitor and troubleshoot production systems, ensuring high availability and performance.
• Implement security and data protection best practices.

What You'll Bring 💼 

• 4 to 6 years of professional experience as a backend developer.
• Strong proficiency in Node.js and NestJS framework.
• Good hands-on experience with Python (Django/Flask experience is a plus).
• Solid understanding of relational and non-relational databases.
• Proficient in writing complex NoSQL queries and SQL queries
• Experience with microservices architecture and distributed systems.
• Familiarity with version control systems like Git.
• Basic understanding of containerization (e.g., Docker) and cloud services is a plus.
• Excellent problem-solving skills and a collaborative mindset.

Bonus Points ➕ 

• Experience with CI/CD pipelines.
• Exposure to cloud platforms like AWS, GCP or Azure.
• Familiarity with event-driven architecture or message brokers (MQTT, Kafka, RabbitMQ)

Why this role matters

You will help build the company from the ground up—shaping our culture and having an impact from Day 1 as part of the foundational team.

About the Role

We are looking for a skilled and dedicated FreeSWITCH Engineer with hands-on experience in VoIP systems. You will play a key role in developing, configuring, and maintaining scalable and reliable FreeSWITCH-based voice infrastructures. This is a onsite role based in Gurugram location.

Key Responsibilities

• Design, deploy, and maintain FreeSWITCH servers and related VoIP infrastructure.
• Troubleshoot and resolve FreeSWITCH and VoIP-related issues.
• Develop custom dial plans, modules, and call routing logic.
• Work with SIP, RTP, and related VoIP protocols.
• Monitor system performance and ensure high availability.
• Collaborate with development, network, and support teams to optimize voice systems.
• Document configurations, workflows, and system changes.

Requirements

• Minimum 3 years of hands-on experience with FreeSWITCH in a production environment.
• Strong understanding of VoIP technologies and SIP protocol.
• Experience with Linux system administration.
• Familiarity with scripting languages (Bash, Python, Lua).
• Ability to work independently in a remote setup.
• Strong problem-solving and analytical skills.

Preferred Skills

• Experience with other VoIP platforms (Asterisk, Kamailio, OpenSIPS).
• Knowledge of WebRTC, RTP engines, or media servers.
• Exposure to monitoring tools (Grafana, Prometheus, Nagios).
• Familiarity with APIs and backend integration.

Why Join Us?

• Collaborative and supportive team environment.
• Opportunity to work on innovative VoIP solutions at scale.

• Experience working on large enterprise application integrations. Deep understanding and delivering solution using common messaging patterns
• Experience with Enterprise Service Bus/Azure Service Bus preferred
• Deep understanding and experience with agile development practices, including unit testing and continuous integration.
• Willingness to take on additional responsibility to ensure team success and quality solutions.
• Team player that understands how your own work is important to the team's success.
• Ability to multitask across different projects.
• Become a partner and trusted advisor to the internal development team on best-fit technologies and best practices.
• Familiarity with object serialization to one of the following: XML, JSON, BSON.
• Database development skill using SQL Server a must.
• A deep understanding of the .NET platform.
• Experience with the ASP.NET MVC. C#, JavaScript, Microservices, Web API, WPF
• Exposure to an ORM such as Entity Framework or NHibernate or equivalent implementation.
• Windows server and Azure development experience
• Queuing experience using MSMQ (or equivalent).
• Development experience using HTML5/CSS/JavaScript frameworks such as AngularJS or Ember or equivalent.
• Professionalism to include written and oral communication and the ability to communicate collaboratively in front of a whiteboard. An ability to understand your audience and adjust your communication style appropriately.
• A desire to constantly learn and share new knowledge
• A caring attitude – care about what you do, who you do it with, and how you’re going to be successful in the end.
• 10+ yrs. professional software development experience.
• Solid working knowledge of four or more of the following technologies:
• Authoring APIs compliant with REST standards
• Development using HTML5/CSS/JavaScript frameworks such as AngularJS or Ember or equivalent
• Development using Silverlight or WPF JQuery

• Designing, developing, implementing, and releasing high quality custom software solutions.
• Applying the very best technical agile patterns and practices when building custom software solutions.
• Collaborating with customers to provide technical consultation and assistance when required.
• Working with CTO, Software Development Manager and Architect, but will be expected to work independently on complex, non-routine tasks and projects. You may interact with end-users and other technical personnel to identify and correct issues.
• Maintaining continuous, open, consistent professional communication with peers and team members. Openly listen to others and confirm understanding to ensure everyone is on the same page.
• Working closely with team members on quality-related activities.

Essential Duties and Responsibilities:

• Developing complete website architecture.
• Creating websites/a website using standard HTML/CSS practices
• Designing user interactions on web pages. 
• Developing back end website applications. 
• Creating servers and databases for functionality. 
• Ensuring cross-platform optimization for mobile phones. 
• Ensuring responsiveness of applications. 
• Seeing through a project from conception to finished product. 
• Designing and developing APIs. 
• Meeting both technical and consumer needs. 
• Researching different software programs, maintaining software documentation
• Implementing contingency plans in case the website goes down
• Maintaining and expanding/enhancing the website once built

Designing, architecting and developing the backend and APIs, primarily using the MEAN/MERN stack, for products or platforms for end-clients to consume our technology in Infrastructure Monitoring from Satellite Imagery and Robotic Process Automation in Banking and Mortgage Services.

- Interfacing with the customer, tech team members, project managers and other relevant product people for a thorough understanding of the product, use case and business objective, detailed specification and data flow for the requirement, demonstration of the solution and clarification of queries at appropriate times during the life-cycle of the product.

- Preparing test cases, setting up CI/CD and integration with logging and monitoring systems for the products or platforms 

- Seeking customer feedback to continuously optimize the product for great customer experience and high technical performance in areas such as hardware efficiency, latency and throughput

- Delivering a robust backend platform for the products and platforms by incorporating important considerations regarding minimal downtime, high availability, data redundancy, tight security, etc. into the design