OPR Resourcing Specialists

Senior / Experienced Software Developer Location: Guildford (Hybrid must be UK-based and within a two-hour commute) Contract: Full-time, Permanent Salary: £55,000 £65,000 (depending on experience) The Opportunity An established UK technology company is expanding its Software Development Team and is looking for an experienced Senior Software Developer to help evolve a large-scale, enterprise-grade SIP platform and its associated REST APIs. This is an excellent opportunity to work on complex, real-world systems in a collaborative, technically strong environment. You ll contribute to the ongoing development of a mission-critical communications platform, build value-added services, and work with modern AI-driven integrations. The organisation is known for its strong engineering culture, long-term customer partnerships, and commitment to professional development. You ll be joining a supportive, innovation-led environment where your ideas and expertise will have a real impact. Role Summary Designing, developing, and enhancing an existing enterprise SIP platform and supporting services Building new value-added services and capabilities around the core platform Developing integrations with third-party systems, including AI-based voice recognition, transcription, and sentiment analysis services Ensuring secure software design and development at both application and network levels Analysing, troubleshooting, and resolving SIP/RTP and platform-level issues Contributing to secure development processes, policies, and compliance with standards such as ISO 27001 and PCI-DSS Collaborating closely with other developers and stakeholders to deliver high-quality, scalable solutions Essential Skills & Experience SIP / VoIP and related protocols (SDP, RTP, RFC2833 / RFC4733, etc.) Python or another object-oriented language (5+ years) Object-oriented design principles HTTP / RESTful APIs Flask or Django, including Jinja, Pytest, SQLAlchemy, and Marshmallow Secure systems design and development (software and network level) SIP/RTP troubleshooting using tools such as Wireshark Git / GitHub (or similar version control systems) Docker containerisation Linux (Ubuntu-based) environments Full drviing licence with car due to the client's location Desirable Skills FreeSWITCH (configuration and, ideally, source code) C / C++ (for open-source troubleshooting or minor code changes) Kamailio Auth0 / OAuth 2.0 MongoDB and/or MySQL CI/CD pipelines (e.g. GitHub Actions) Kubernetes / ArgoCD WebRTC Benefits 24 days annual leave plus bank holidays Pension, Life insurance, Private medical insurance Birthday and volunteering day off High street discount vouchers Thank you for taking the time to apply to OPR Resourcing Specialists. If your application is successful you will be contacted within 7 days. We apologise but due to the high volume of applications we receive we are unable to provide feedback on individual CV's. Regrettably, we are unable to offer Right to Work Sponsorship. If you do not currently have the Right to Work in the UK or will need additional support to extend your current Right to Work status, your application cannot be considered. Please note that by applying for the above job it will be understood that you accept our Terms of Business and Privacy Policy which can be found on our website on the page "Find A Job".

Electro-Mechanical Events Technician Permanent Woking £25,000 - £34,000 + additional on-site pay Training support available for City & Guilds 2391 (Test & Inspect) Are you a hands-on technician with a passion for live events, theatre, or touring productions? Do you enjoy working with electro-mechanical equipment and want to be part of creating unforgettable experiences? We re looking for an Electro-Mechanical Events Technician to join a leading events company, supplying and preparing world-class staging and automation equipment for some of the biggest names in the entertainment industry. Whether you ve gained experience on the job or through formal training, this role offers the chance to develop your technical skills, work with cutting-edge kit, and be part of a friendly, driven operational team that makes live magic happen. If you re keen to grow, there s potential study support for the City & Guilds 2391 Test & Inspect certificate, helping you build a long-term career in a unique and rewarding industry. What you ll be doing: Technical Prep & Equipment Handling Learn the ins and outs of specialist electro-mechanical staging equipment (Versa Stage and more). Use job packs, pull sheets, and drawings to prepare gear accurately. Maintain, test, and prep equipment ready for events. Operational Support Help check gear in and out using inventory systems. Keep things moving efficiently in the warehouse and work closely with the team to meet tight deadlines. On-Site Readiness & Event Support Grow your knowledge to assist with on-site setups (opportunities to join event crews). Drive company vehicles to deliver and collect equipment (a full UK license is required). Teamwork & Contribution Play a key role in maintaining high equipment standards. Support all stages of the supply chain from warehouse floor to event site. What we re looking for: Hands-on experience in the events or entertainment sector (or related industries). Familiarity with electro-mechanical or electrical equipment. Electrical qualifications are a big plus support available for further study like the City & Guilds 2391 Extra skills like fabrication, welding, or carpentry? Even better. Comfortable working across warehouse, site, and office environments. Great time management, calm under pressure, and a proactive mindset. Full UK driving license is essential. Willingness to work evenings/weekends or travel when needed. A team player who genuinely cares about delivering high-quality results. Why join? Be part of exciting, high-profile events. Work with a tight-knit, experienced team that loves what they do. Real career progression and skill development. Study support to grow your electrical qualifications Additional pay for working on-site at events. Thank you for taking the time to apply to OPR Resourcing Specialists. If your application is successful you will be contacted within 7 days. We apologise but due to the high volume of applications we receive we are unable to provide feedback on individual CV's. Regrettably, we are unable to offer Right to Work Sponsorship. If you do not currently have the Right to Work in the UK or will need additional support to extend your current Right to Work status, your application cannot be considered. Please note that by applying for the above job it will be understood that you accept our Terms of Business and Privacy Policy which can be found on our website