Three UK

Telecommunications

SeniorEngineer-GatewayFunctions

£75–110k ~AI est. Newbury, England, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for mid candidates.

The Brief

“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.

Telecommunications
Problems you'll solve

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

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