Richard Robson

Results-driven VoIP Engineer with over 30 years of experience in IT and telecommunications, specializing in the design, deployment, and support of high-availability voice infrastructure. Proven expertise in building and maintaining global OpenSIPS/RTP Engine platforms handling over 82 million monthly calls with 99.999% SLA uptime. Adept at crafting scalable, multi-tenant call center telephony solutions and integrating seamlessly with PSTN providers.

Skilled in technologies such as Asterisk,Opensips, Kamailio, MySQL, Jenkins, GoCD, Ansible, and monitoring tools including Grafana and Wireshark, Hepic and Homer. Recognized for exceptional problem-solving, vendor collaboration, and a hands-on approach to delivering reliable, secure, and high-performance VoIP systems. Ready to bring deep technical knowledge, strategic insight, regulatory compliance and carrier relations to drive innovation and operational excellence in your organization.

Senior VoIP Engineer/Developer / 8x8  04/2023 – 03/2025

• Delivered seamless Call Centre integration by designing and deploying customized VoIP solutions using OpenSIPS and MySQL, resulting in a 30% reduction in call drop rates.
• Managed Opensips configurations and DB configurations for Opensips support
• Enhanced system reliability by configuring and maintaining VoIP servers and SIP gateways, ensuring 99.9% uptime across communication infrastructure.
• Accelerated deployment efficiency by automating service rollouts through Ansible and GoCD pipelines, cutting release times by 40%.
• Resolved over 95% of VoIP-related issues by providing Tier-2/3/4 technical support and executing targeted troubleshooting strategies.
• Sustained business continuity by monitoring network KPIs and supporting legacy telephony systems, minimizing service disruptions and ensuring consistent QoS.

• Engineered and deployed scalable VoIP infrastructures using Kamailio and Asterisk backed with MySQL, enabling seamless communication for over 50+ small to enterprise-level businesses.
• Optimized call routing and server performance by configuring and maintaining SIP servers and VoIP gateways and MySQL databases, reducing latency issues by 30%.
• Resolved complex VoIP technical issues by delivering end-to-end support and diagnostics, increasing system uptime to 99.9%.
• Streamlined deployment workflows by integrating Jenkins automation, accelerating service rollouts by 40% while reducing human error.
• Monitored real-time network traffic and fine-tuned QoS parameters, ensuring crystal-clear call quality and reducing dropped calls by 25%.

Voip Engineer / Fuze  12/2017 - 11/2021 

• Improved call reliability by 35% by deploying and optimizing VoIP solutions using Asterisk for seamless carrier-grade integration.
• Increased operational uptime by configuring and maintaining over 100 SIP and TDM trunks on enterprise-grade voice gateways.
• Resolved 98% of Level 2/3/4 VoIP issues by delivering in-depth technical support across carrier and PSTN infrastructures.
• Accelerated issue resolution time by 40% by coordinating directly with vendors such as Gamma, Tata, Lumen, BT, and Bandwidth to commission and troubleshoot complex PSTN trunk configurations.
• Ensured 99.9% call quality SLA compliance by continuously monitoring VoIP network performance and proactively mitigating latency and jitter.
• Ensured compliance with carriers and local PSTN regulations in NA, EMEA and APAC.
• Implemented STIR/SHAKEN via Neustar
• Covered on-call rota for out of hours emergencies 

• Engineered scalable VoIP infrastructures for multi-size call centers by leveraging OpenSIPS and Asterisk, resulting in a 35% reduction in communication costs and a 40% increase in call handling capacity.
• Wrote OpenSIPS scripts for outbound dialler call flows, ensuring IOC compliance and 99.99% uptime of VoIP, with auto failover and balance calls over several carriers.
• Wrote C# web portal to manage Opensips DB integration (MSSQL)
• Decreased system downtime by 50% by automating VoIP server deployments and maintenance workflows using Jenkins, ensuring rapid rollout of services across virtual environments.
• Maintained DB servers for MSSQL and MySQL
• Enhanced voice and data service quality by continuously monitoring network/server health through Grafana, Zabbix, and Homer, which cut troubleshooting time by 60% and improved SLA compliance.
• Optimized performance of over 100 virtual servers by managing and maintaining a high-availability virtual server farm, supporting seamless operations across distributed call center networks.
• Secured and stabilized core infrastructure by installing and managing colocated servers and networking hardware, reducing hardware failure incidents by over 45% annually.

• Resolved over 95% of VoIP-related issues on first contact by diagnosing and troubleshooting complex system errors, improving client satisfaction and reducing downtime.
• Enabled uninterrupted internet connectivity for over 500+ SME and residential users by swiftly identifying and addressing access issues, reducing service disruption by 40%.
• Enhanced call quality and system stability by configuring and maintaining VoIP servers and gateways, leading to a 30% drop in customer complaints.
• Strengthened email and web service reliability by optimizing server configurations and executing preventative maintenance, increasing uptime to 99.9%.
• Maintained core infrastructure performance by proactively supporting and securing network, web, and mail systems, ensuring seamless service delivery across all platforms.

Diplomas in Computing and Information Technology from the Open University