SIP/VoIP Engineer

Sarj.ai is hiring an SIP/VoIP Engineer in Riyadh, Saudi Arabia. Level rates it ; you can apply on Sarj.ai.

Level's read on this job

On Level's scale, this role is Works on AI ●●●○: the daily work is on AI products, without building the model.
The posting mentions Sip, Webrtc and Asterisk among its tools and skills.
Level classes it as a senior role.
Sarj.ai has 14 other open roles on Level.
Posted in the last few days.

AI in this role

Build and maintain telephony capabilities, integrating Voice AI agents with client infrastructure, PBXs, and contact-center platforms.

sipwebrtcasteriskfreeswitchkamailiogenesysavayacisco

ai-agentsspeechvoiptelephonysip-routingapi-integrations

About Us

Built in KSA and leveraging Silicon Valley expertise, we're building innovative solutions in the realm of Voice AI and AI agents. As we continue our rapid growth trajectory in an exciting and dynamic market, we're searching for creative talent to join our team.

Role Overview

As a SIP/VoIP Engineer, you’ll help build Sarj’s telephony capabilities and own custom integrations connecting our Voice AI agents to client infrastructure. You’ll work closely with our Operations and Engineering teams and B2B and B2G clients to develop, deploy, and troubleshoot reliable voice solutions.

Key Responsibilities

Build and maintain telephony capabilities within Sarj’s platform alongside our engineering team.
Integrate Voice AI agents with client PBXs, SBCs, SIP trunks, and contact-centre platforms.
Develop custom call flows, SIP routing, and WebRTC-based human handoffs.
Lead technical client discussions, gather requirements, and drive integrations through to production.
Troubleshoot call quality, signalling, connectivity, and interoperability issues.

Requirements

Bachelor’s degree in Software Engineering, Computer Science, or a related field.
Professional proficiency in Arabic and English, with strong communication and client-facing skills.
4+ years of experience in SIP/VoIP engineering or telephony integrations.
Strong knowledge of SIP, RTP, SDP, call routing, and VoIP networking.
Software development experience, with the ability to build integrations and work with APIs beyond configuring existing telephony platforms.
Hands-on experience with Asterisk, FreeSWITCH, Kamailio, or commercial SBCs.
Experience working with Saudi telecom carriers, WebRTC, and enterprise telephony platforms such as Genesys, Avaya, or Cisco.
A proactive, hands-on approach to problem-solving and ownership.

Why Join Us?

Opportunity to be part of a high-growth, innovative tech start-up.
Collaborative, mission-driven culture.
Hands-on experience working on impactful AI products.

How we rate this

SIP/VoIP Engineer at Sarj.ai rates 65 out of 100 for how much of the daily work is AI. That makes it Works on AI (AI Level 3 of 4). The level is about AI in the job, not seniority.

Classification

Works on AI. The daily work is on AI products, without building the model.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Read the description and count the AI tools, models and workflows it names.

Key facts

SIP/VoIP Engineer is an open job at Sarj.ai.
Level rates this role AI Level 3 of 4: Works on AI.
The role is based in Riyadh, Saudi Arabia.
The job was posted on October 26, 2026.
Seniority: senior.
Applications are handled by Sarj.ai. Apply on Sarj.ai

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

AI agentsSpeechVoipTelephonySip RoutingAPI IntegrationsSipWebrtc

Questions you could be asked

How do you decide when an AI agent can act on its own versus asking for approval first?
What have you built with speech recognition or text-to-speech, and where did it break?
Tell me about a project where voip was part of your work. What did you do?
Tell me about a project where telephony was part of your work. What did you do?
Tell me about a project where sip routing was part of your work. What did you do?

Adapt your resume

List these exact terms on your resume: AI agents, Speech, Voip, Telephony, and Sip Routing. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
Show where AI is part of your daily process, not a one-off project. This role expects it to be a running habit.

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