Birmingham, West Midlands, United Kingdom Hybrid / WFH Options
Hays
must have the following skills & experience: Extensive experience with enterprise VOIP and Unified Communications platforms (Cisco Call Manager, SIP, Cloud Voice). In-depth knowledge of SIP, ISDN, PSTN, RTP/SRTP, and voice gateway technologies. Strong understanding of QoS, DHCP, DNS, and network dependencies impacting voice quality. Proven track record of migrating from legacy voice systems to modern SIP More ❯
top of emerging technologies and regulatory changes What we’re looking for 5+ years in professional software development, with 2+ years in Rust Strong knowledge of telecom protocols (SIP, RTP, VoIP, 4G/5G, IMS, Diameter, SS7, etc.)Experience with distributed systems, real-time communications, or network services Solid grasp of concurrency, memory management, and performance tuning in More ❯
Manchester, North West, United Kingdom Hybrid / WFH Options
MECS Communications Ltd
on-call support (1 in 4 rotation). Essential Skills: * Experience with Cisco UC technologies (UCM, Unity, Expressway, Webex, CUBE, ISDN/Analogue Gateways). * Strong understanding of SIP, RTP, and basic network configurations. * Proven MSP or managed services experience. * Excellent communication and documentation skills. * Cisco CCNP (preferred) and ITIL knowledge. You will need: * Strong problem-solving and planning skills. More ❯
to track and diagnose issues in production A solid understanding of security principles and secure coding including OWASP Top 10 Nice to haves: o Experience in VOIP, (SIP and RTP advantageous) o Experience of TDD/BDD/DDD o Knowledge of PCI compliance and associated standards such as ISO 27001 o Knowledge of accessibility standards and how to apply More ❯
to track and diagnose issues in production A solid understanding of security principles and secure coding including OWASP Top 10 Nice to haves: o Experience in VOIP, (SIP and RTP advantageous) o Experience of TDD/BDD/DDD o Knowledge of PCI compliance and associated standards such as ISO 27001 o Knowledge of accessibility standards and how to apply More ❯
East London, London, United Kingdom Hybrid / WFH Options
Nemo Resourcing
Linux knowledge Good knowledge of containers and orchestration, especially Docker Relational database skills MySQL, MariaDB or PostgreSQL Any of the following would be good to have: - Wider VoIP skills: RTP, Asterisk, OpenSIPS, RTPEngine, WebRTC Programming skills in C/C++ or Lua Knowledge of networking: IPv4, IPv6, firewalls, routing Podman, Docker Composer/Swarm, Kubernetes Init systems: sys5 init, runit More ❯
their use for securing inter-tenant traffic on a multi-tenanted network. Awareness of Wi-Fi design best practices. Exposure to broadcast/media application layer protocols including AES67, RTP, SRT, and ST2202-7. Knowledge or experience of working with media/technology tools (hardware and software). If you can bring some of these skills and experience, along with More ❯
programmer or analyst/designer in a financial environment. Industry Knowledge : Experience with Treasury Services/Investment Banking processes and products. Experience with Payments within Banking (SEPA, SWIFT, ChAPS, RTP) Certifications : PMP, PgMP, or similar certifications. More ❯
programmer or analyst/designer in a financial environment. Industry Knowledge : Experience with Treasury Services/Investment Banking processes and products. Experience with Payments within Banking (SEPA, SWIFT, ChAPS, RTP) Certifications : PMP, PgMP, or similar certifications. More ❯
warrington, cheshire, north west england, united kingdom
Ascendion
programmer or analyst/designer in a financial environment. Industry Knowledge : Experience with Treasury Services/Investment Banking processes and products. Experience with Payments within Banking (SEPA, SWIFT, ChAPS, RTP) Certifications : PMP, PgMP, or similar certifications. More ❯
Chester, Cheshire West and Chester, Cheshire, United Kingdom
Ascendion
programmer or analyst/designer in a financial setting. Hands-on experience with Treasury Services or Investment Banking products and processes. Strong knowledge of Banking Payments (SEPA, SWIFT, CHAPS, RTP). Certifications: PMP, PgMP, or equivalent certifications required About Us: Ascendion is a global, leading provider of AI-first software engineering services, delivering transformative solutions across North America, APAC, and More ❯
Basingstoke, Hampshire, South East, United Kingdom
Southern Communications Ltd
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
a self-motivated, and experienced VoIP and C++ Development Engineer.This is a hands-on execution role, working on the core telephony stack involving signalling, media processing, SIP call routing, RTP relaying, WebRTC and failover mechanisms. The opportunity is ideal for engineers with a passion for building, debugging, and optimizing real-time communication systems, with extensive knowledge and background … hours. Produce and maintain detailed project, policy, and procedural documentation. Skills & Experience: 5+ years of experience building and operating VoIP systems using communications protocols such as UDP, SIP and RTP Strong hands-on with Softswitch, OpenSIPs, RTPEngine. Solid expertise with SIP signalling, RTP, and media relay techniques. Hands-on experience with Session Border Controller, Media Servers and WebRTC. Experience in More ❯
