About GxP Technologies India

We are a deep tech technology firm specializing in AI-driven solutions across healthcare, industrial manufacturing (including semiconductors), and automotive sectors—offering a complete AI stack from edge devices to cloud-based software. As part of Growth xPartners, a Japanese company listed on the Tokyo Stock Exchange, we operate from Trivandrum and boast a diverse, global team rooted in a values-driven performance culture. Our cross-functional team drives innovation in an early-stage, fast-growing environment with a clear long-term vision to become the industry leader in every domain we serve.

Job Summary

We are looking for a skilled https://jobeax.com/link/JSd7UYCSg572jJDY Backend Developer with experience in building scalable, real-time backend applications and integrating communication platforms. The ideal candidate will have strong expertise in https://jobeax.com/link/JSd7UYCSg572jJDY, TypeScript, REST APIs, asynchronous processing, and real-time communication technologies.

You will be responsible for developing and maintaining backend services, integrating VoIP platforms such as Asterisk and Twilio, and building real-time streaming capabilities and monitoring dashboards.

Requirements

Mandatory Skills:

Core : https://jobeax.com/link/JSd7UYCSg572jJDY 20 LTS, TypeScript
REST API : NestJS (or Fastify)
Asterisk Integration : Community ari-client (Node)
Twillio API/applications/similar experience/exposure
Data Layer : Redis (ioredis), MariaDB (Prisma/TypeORM)
Asynchronous Processing : Experience in Natively (via the event loop) handles ARI/events/webhooks in a unified manner
WebSocket/Media Processing : ws / uWebSockets.js: supports for real-time streaming
Experience in building n aturally extensible operations/monitoring dashboard built with https://jobeax.com/link/Z30sZYC3jcRenVso

Secondary/Good to have skill:

Experience developing VoIP, telephony, contact center, or communication-based applications.
Hands-on experience with Asterisk PBX, ARI, call control, and call lifecycle management.
Experience with Twilio Programmable Voice or similar communication APIs.
Familiarity with audio streaming, media processing, and real-time event handling.
Experience building monitoring dashboards using Next.js.
Knowledge of Docker, CI/CD pipelines, and cloud-based deployments.
Experience with application logging, metrics, alerting, and production troubleshooting.

Key Responsibilities

Design, develop, and maintain scalable backend services using https://jobeax.com/link/JSd7UYCSg572jJDY 20 LTS and TypeScript.
Build robust REST APIs using NestJS or Fastify.
Integrate Asterisk PBX systems using the Asterisk REST Interface (ARI) and the https://jobeax.com/link/JSd7UYCSg572jJDY ari-client library.
Develop and maintain integrations with Twilio APIs, applications, or similar communication platforms.
Implement real-time event processing for ARI events, webhooks, and other asynchronous operations using https://jobeax.com/link/JSd7UYCSg572jJDY event-driven architecture.
Design and manage data storage and caching solutions using Redis and MariaDB.
Implement database access and ORM-based data management using Prisma or TypeORM.
Develop WebSocket-based communication and real-time streaming capabilities using ws or https://jobeax.com/link/lXYOmpWjKcqVR6dg .
Build an extensible operations and monitoring dashboard using https://jobeax.com/link/Z30sZYC3jcRenVso to support real-time system visibility, monitoring, and operational management.
Ensure application performance, reliability, scalability, and maintainability.
Troubleshoot technical issues, optimize backend performance, and collaborate with cross-functional teams to deliver reliable solutions.

Qualification and Work Experience

● Qualifications - Must Have

Bachelor’s/Master’s degree in Computer Science, Engineering, or related field.

● Certifications- Desired

Relevant certifications in related fields will be considered an added advantage.

● Work Experience

3–5 years of hands-on front-end development experience .

Strong problem-solving skills, Analytical skills with attention to detail and a growth mindset .

Competencies and Skills

Communication Skills : Strong interpersonal, verbal, and written communication abilities, with the capability to collaborate effectively with cross-functional teams and articulate technical concepts clearly.
Tech Savviness : Comfortable working with modern development tools, technologies, and software engineering systems.
Proactive & Ownership Attitude : A self-driven individual who takes full ownership of tasks, proactively identifies problems, and contributes to scalable, high-quality solutions .

Adaptability : Ability to thrive in a dynamic, fast-paced engineering environment, quickly learn new technologies, and adapt to evolving project requirements .

Benefits

A competitive salary and benefits package.
High visibility and direct mentorship, reporting directly to senior leadership.
A clear career path from a foundational individual contributor to a team leader.
The opportunity to take ownership of key marketing functions and make a real impact.
Direct exposure to international business strategy and operations.
A collaborative, supportive, and dynamic work culture.

Software Engineer - VoIP Applications

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