Layer7 SAPI de CV - VoIP / SIP DevOps Engineer

Client: Layer7 SAPI de CV

Location: Colombia, DC, co

Contract: Freelance

Job Description

This is a remote position.

At Layer7, we are building hyper-scale technology, where every engineering decision impacts millions of users and the critical operations of banks, retailers, and large enterprises. We are a team of over 100 passionate professionals tackling highly complex technical problems, from resilient distributed systems to platforms capable of processing billions of interactions annually. Here, we cultivate a culture of high performance, technical curiosity, and real camaraderie, with room to grow, learn, and maintain a healthy balance between personal and professional life. If you enjoy solving challenging problems, designing systems that scale without limits, and daring to innovate with impact, this is your place.

The objective of the position is to configure and maintain VoIP infrastructure (Kamailio, RTPengine, FreeSWITCH), ensuring audio quality, SIPREC recordings, and proper interconnection with carriers.

Responsibilities

• Administer Kamailio, RTPengine, and FreeSWITCH in production environments.
• Implement SIPREC, monitor with HOMER, and analyze quality (MOS, jitter, packet loss).
• Manage SIP interconnections with carriers and conduct interoperability testing.
• Monitor traffic, quality, and performance metrics in real-time.

Requirements

• Solid knowledge of SIP/RTP protocols.
• Experience with Kamailio, FreeSWITCH, and Linux environments.
• Basic knowledge of networking and QoS.
• Desirable experience with Kubernetes and observability.

Benefits

• Competitive salary.
• 100% remote employment. Apply regardless of where you live.
• Dynamic and collaborative work environment.