Three UK
Telecommunications
SeniorEngineer-GatewayFunctions
Neural analysis suggests this role is
optimal for mid candidates.
“Senior Engineer - Gateway Functions at Three UK. Skills: Gateway platforms, Packet core, 5G core architecture. Define roadmap for core gateway platforms. Manage lifecycle of core gateway platforms”
What You'll Achieve.
Meet business requirements; Ensure solutions are captured; Ensure solutions are understood; Ensure solutions are deployed successfully; Provide high availability; Provide efficiency; Provide future-ready capabilities; Support growth in data services; Support growth in IoT services; Support growth in 5G services; Meet customer expectations; Meet regulatory expectations; Assure stability; Assure resilience; Proactive risk management
Industry & Context.
Analytical; Problem-solving; Structured decision-making; Incident investigations; Problem management
What They're Looking For.
Must Have
Bachelor's degree in Telecommunications, Electrical Engineering, or Computer Science, Deep knowledge of core gateway functions: GGSN, PGW, SGW, UPF, IPX/GRX, Gi/SGi-LAN, NAT, DPI, Excellent working knowledge of 3G, LTE & 5GSA data networks
Nice to Have
Master's degree preferred, Industry certifications (e.g., 3GPP standards training, cloud certifications) advantageous
What You'll Do.
Define roadmap for core gateway platforms
Manage lifecycle of core gateway platforms
Drive evolution to cloud-native solutions
Lead design of gateway platforms
Build gateway platforms
Integrate gateway platforms
Accept gateway platforms into live network
Engineer gateways for scale
Engineer gateways for performance
Engineer gateways for security
Drive innovation through automation
Drive efficiency through automation
Drive innovation through traffic optimisation
Drive efficiency through traffic optimisation
Drive innovation through policy-driven architectures
Drive efficiency through policy-driven architectures
Partner with Operations to assure stability
Partner with Operations to assure resilience
Partner with Operations for proactive risk management
Establish KPIs for data session success rates
Monitor KPIs for data session success rates
Establish KPIs for throughput
Monitor KPIs for throughput
Establish KPIs for latency
Monitor KPIs for latency
Establish KPIs for roaming performance
Monitor KPIs for roaming performance
Establish KPIs for security posture
Monitor KPIs for security posture
Participate in incident investigations
Participate in problem management
Drive long-term fixes
Collaborate with L4 Leaders
Collaborate with L5 peers
Collaborate with signalling peers
Collaborate with IP peers
Collaborate with cloud peers
Collaborate with security peers
Manage vendor relationships
Influence product roadmaps
Secure best-in-class solutions
How You'll Work.
Team & Collaboration
Business stakeholders; Strategy teams; Architecture teams; Delivery partners; Operational partners; L4 Leaders; L5 peers; Signalling peers; IP peers; Cloud peers; Security peers; Key vendors; Key partners
Process & Methodology
Roadmap planning
Full Job Description
VodafoneThree - Senior Engineer - Gateway Functions Location: Newbury + Hybrid Working Hours: Full time 37.5 hours per week – Mon to Fri *Hybrid We believe that through collaboration and connection with our colleagues we can achieve great things. Our hybrid working approach allows our people to work both in the office and at home, providing the flexibility and resources you need to succeed in your role. We don't require you to be in on specific days; instead, we ask people to come into the office 2-3 days each week. You should work with your line manager to understand what their expectations are for you, your specific role and your team. Who We Are We’re here to build a network the UK can count on – one that connects people, places and potential. Because no matter where you live, what your background is, or how you get online – we think everyone deserves the same chance to stay connected, and with VodafoneThree, that future’s being built – today. We’re creating more than the UK’s best network. We’re helping close the digital divide, empower communities and drive meaningful progress. We believe that everyone should feel they belong. Whoever you are and whatever your story, there’s space for you here. We’re building a workplace where different perspectives are welcomed, voices are heard, and everyone feels safe to show up as themselves. You’ll join a team that genuinely cares – about each other, about our customers, and about the future we’re building. From day one, you’ll be welcomed, valued and encouraged to bring your whole self to work. Why VodafoneThree Join us and you’ll be at the heart of change. That means building responsibly, investing sustainably and creating opportunities that last. We’re not just expanding connectivity; we’re reimagining what a connected nation looks like. With £11bn invested in 5G and digital infrastructure, your work will directly power businesses, services, and communities across the country. You’ll work on real challenges, with real i
Applying for this Senior Engineer - Gateway Functions role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
How to Apply on SmartRecruiters
- SmartRecruiters often includes a video screening step — check camera and mic permissions.
- Link your GitHub or portfolio directly in the profile section for technical roles.
- Applications may be reviewed by AI scoring before reaching a recruiter — use keywords from the job description.
ANONYMOUS · UNFILTERED
What do employees actually say about Three UK?
Real rants from real employees. Read before you apply.