Fullstack Engineer

We’re building a powerful, AI-driven communication platform — a next-generation alternative to RingCentral or 8x8 — powered by OpenAI, LangChain, and SIP/WebRTC. We're looking for a Full-Stack Software Developer who’s passionate about building real-time, AI-enabled voice infrastructure and who’s excited to work in a fast-moving, founder-led environment.

This is an opportunity to build from scratch, take ownership of core systems, and innovate on the edge of VoIP + AI.

What You’ll Do

• Design and build AI-driven voice and messaging features (e.g. smart IVRs, call transcription, virtual agents)
• Develop backend services using Python, Node.js, or Golang
• Integrate OpenAI, Whisper, and LangChain with real-time VoIP systems like Twilio, SIP, or WebRTC
• Create scalable APIs, handle call logic, and build AI pipelines
• Collaborate with the founder and early team on product strategy and infrastructure
• Participate in occasional in-person strategy meetings (Delhi, Bangalore, or nearby)

Must-Have Skills

• Strong programming experience in Python, Node.js, or Go
• Hands-on experience with VoIP/SIP, WebRTC, or tools like Twilio, Asterisk, Plivo
• Experience integrating with LLM APIs, OpenAI, or speech-to-text models
• Solid understanding of backend design, Docker, Redis, PostgreSQL
• Ability to work independently and deliver production-grade code

Nice to Have

• Familiarity with LangChain or agent-based AI systems
• Knowledge of call routing logic, STUN/TURN, or media servers (e.g. FreeSWITCH)
• Interest in building scalable cloud-first SaaS products

Work Setup

• 🏠 Remote work (India-based, must be reachable for meetings)
• 🕐 Full-time role
• 💼 Direct collaboration with founder (technical)
• 🧘‍♂️ Flexible hours, strong ownership culture

Exp. - must be 8-12 yrs

Location - Bangalore/Mumbai

• Experience in Core Java 5.0 and above, CXF, Spring.

• Extensive experience in developing enterprise-scale n-tier applications for financial domain. Should possess good architectural knowledge and be aware of enterprise application design patterns.

• Should have the ability to analyze, design, develop and test complex, low-latency client-facing applications.

• Good Experience into Microservices , Data structures , Oops , Algorithms, multithreading etc

• Good development experience with RDBMS, preferably Sybase database.

• Good knowledge of multi-threading and high-volume server-side development.

• Experience in sales and trading platforms in investment banking/capital markets.

• Basic working knowledge of Unix/Linux.

• Experience into High /Low level designing.

• Excellent problem solving and coding skills in Java.

• Strong interpersonal, communication and analytical skills.

• Should have the ability to express their design ideas and thoughts.

Roles and Responsibilities:

1.    Develop, enhance, document, and maintain application features in C#/Asp.Net.

2.    Excellent understanding of Database concepts and strong ability to write well-tuned SQL Statements.

3.    Participate in design, code and test inspections throughout product life cycle to contribute technical expertise and to identify issues.

4.     Knowledge of developing desktop-based applications is also desirable.

5.    Understand technical project priorities, implementation, dependencies, risks and issues.

6.    Big Data knowledge is a Plus.

7.    Drive design reviews while adhering to security requirements.

8.    Provide direction for .Net developers and act as escalation point for questions or issues.

9.    Performs technical analysis to identify and troubleshoot application code – related issues.

Keyskills

1. Must have hands on experience with ASP_Net, ASP_Net_MVC, Asp .net 4.5 , Core

2. Must have good experience in C#

3. Must have good experience in API

4. Must have hands on experience in HTML_5, angular js,CSS,CSS,CSS3, jQuery, Bootstrap, jAVASCRIPT,

5, Must have experience in Microsoft_SQL_server

• 2 to 5 years of experience (or equivalent understanding of software engineering)
• Familiar with one backend language (Node, Go, Java, Python)
• Familiar with Javascript/Typescript and a UI framework
• Willingness and interest in learning new tech/processes (Airflow, AWS, IaaS, etc.)

• Can write reliable, scalable, testable and maintainable code.
• Familiarity with Agile methodologies and clean code.
• Design and/or contribute to client-side and server-side architecture.
• Well versed with fundamentals of REST.
• Build the front-end of applications through appealing visual design.
• Knowledge of one or more front-end languages and libraries (e.g. HTML / CSS, JavaScript, XML, jQuery, Typescript) JavaScript frameworks (e.g. Angular, React, Redux, Vue.js)
• Knowledge of one or more back-end languages (e.g. C#, Java, Python, Go, Node.js and frameworks like SpringBoot, .NET Core) 
• Well versed with fundamentals of database design.
• Familiarity with databases - RDBMS like MySQL, Postgres & NoSQL like MongoDB, DynamoDB.
• Well versed with one or more cloud platforms like - AWS, Azure, GCP.
• Familiar with Infrastructure as Code - CloudFormation & Terraform & deployment tools like Docker, Kubernetes.
• Familiarity with CI/CD tools like Jenkins, CircleCI, Github Actions.
• Unit testing tools like Junit, Mockito, Chai, Mocha, Jest

As a Senior Technical lead you will be a member of a software development team building innovative new features for the application. Lead the team as Senior Full Stack developer

Primary Job Responsibilities:

• Inherit a well-architected, clean, and robust codebase built with .NET Core 5.x, and JavaScript and Angular
• Evaluate and implement new libraries and components
• Ensure best practices are followed in the design and development of the application Contribute to and help manage our open-source libraries
• Strong knowledge of C# and .NET Core, JavaScript, Angular
• NoSQL databases (MongoDB)Real-time web applications (Web Sockets / SignalR)
• Containerization technologies (Docker, Kubernetes) Swagger /OpenAPI Initiative
• Strong knowledge of design patterns and practices
• Experience in non-Microsoft tech stacks as Node, Python, Angular and others are also crucial components of Source Control - GitHub Unit / Performance / Load Testing
• Experience with Continuous Integration - Jenkins/Travis/Circle/etc.
• Experience working in Agile Environments - JIRA/Slack
• Working knowledge of SAAS Architecture and Deployments - AWS/Google Cloud/etc.

Technical skills: 

• Well documented experience with .NET framework and C#
  • Well documented experience with http://asp.net/">ASP.NET MVC
  • Experience with JavaScript libraries (for example jQuery) 
  • Experience with HTML, JavaScript and CSS 
  • Experience with integrating and developing web services (REST, WCF) 
  • Experience with Unit and Integration testing 
  • Experience with system design and requirement analysis 
  • Knowledge about ORM frameworks (for example Entity Framework) 
  • Good understanding on how to develop stable, high performing and maintainable high scale systems 

Bonus: 

• Experience with Test Driven Development
  • Experience with Domain Driven Design
  • Experience with JavaScript frameworks (for example AngularJS) 
  • Experience with UI frameworks (for example Twitter Bootstrap) 
  • Experience with mobile application development