Our partner is looking for a Senior VoIP / SIP Developer based in Mexico.
You will join an international technology project focused on building reliable and intelligent voice communication infrastructure.
Your main focus will be developing an intelligent call-routing solution that integrates multiple telecom operators and optimizes routes based on cost, quality, and availability.
The role combines backend development with hands-on SIP/VoIP infrastructure engineering in production environments.
The position offers significant technical ownership, requiring autonomy and strong problem-solving skills across software and infrastructure.
You will work with modern backend technologies, databases, containers, Linux systems, and cloud infrastructure in a fully remote environment.
This is a full-time opportunity for an experienced telecommunications developer working on a technically challenging platform with international reach.
Integrate multiple telecom operators and optimize call routes according to cost, quality, availability, and reliability.




Develop backend services and integrations using Python and/or Node.js/TypeScript.
Manage and optimize PostgreSQL databases supporting routing and telephony workflows.
Deploy and operate services using Linux, Docker, and cloud infrastructure.
Troubleshoot production issues across SIP signaling, routing, backend services, and infrastructure.
Take ownership of technical solutions from design and implementation through deployment and ongoing optimization.
Collaborate effectively in a fully remote, international environment while working independently on complex technical challenges.
Professional backend development experience with Python and/or Node.js/TypeScript .
Strong working knowledge of PostgreSQL .
Experience with Linux, Docker, and cloud infrastructure .
Excellent autonomy and ability to work effectively in a fully remote environment.
English proficiency suitable for collaboration within an international technical team.
Experi

📌 Developer Backend Senior (Ciudad de México)
🏢 Lever
📍 Ciudad de México