Telecom Software Engineer

About Us

V-Spot is a fast-growing London-based startup with active operations in Switzerland and the UK. We specialize in cutting-edge cybersecurity services, blockchain security, and custom backend/web solutions.

 

We’re building a global team of top engineers and security minds — people who thrive on solving deep technical challenges and aren’t afraid to work close to the metal.
 

What We’re Looking For

We’re looking for a sharp, experienced Telecom / VoIP Integration Engineer to join us on a remote, project basis. You’ll be working on low-level telecom integrations (SIP, RTP, DID, VoIP APIs), helping us set up and manage scalable call infrastructure for programmatic voice processing.

 

This is not a plug-and-play Twilio job — we’re looking for someone who knows how telecom actually works.

 

What You’ll Do

  • Integrate and configure SIP trunks, DID numbers, and VoIP providers
  • Set up and manage PBX systems (e.g. Asterisk, Kamailio, FreeSWITCH)
  • Define call routing logic, IVRs, call forking, failover handling
  • Work with developers to enable real-time call streaming and backend connectivity
  • Troubleshoot SIP-level issues and optimize signaling flows

 

Requirements

  • Deep understanding of SIP, RTP, VoIP protocols, and signaling
  • Hands-on experience with:

    • Asterisk, FreeSWITCH, Kamailio, or OpenSIPS
    • Telecom tools like sngrep, Wireshark, SIPp
    • Managing SBCs, gateways, NAT traversal, STUN/TURN configs

     

  • Familiarity with:

    • Telecom APIs (Twilio, Plivo, SignalWire, Telnyx)
    • DID provisioning, call routing, failover logic

     

  • Bonus: Understanding of eSIM/SIM management, mobile infra
  • Bonus: Comfort working with backend languages (Python, Go, Node.js)

 

What You Get

  • Project-based contract with remote flexibility
  • Competitive compensation 
  • Direct access to founders and a technical-first culture
  • Fast decision-making and high-impact work
  • A potential path to long-term collaboration in a core engineering role

 

Published 1 July
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