Senior Network Design engineer

Responsibilities

• Elicit business and technical requirements working with the various stakeholders during requirements gathering phase.
• Author both high level and low-level design documents to support Telco services including presenting such designs for internal technical and stakeholder sign off.
• Perform audit, analysis and propose solutions for migrating from one platform or design to another, providing support for testing and fulfilment teams.
• Own software/hardware selection, perform bug scrubs and security vulnerability assessments and work with test and implementation engineers to review test plans, defects, test reports, MOP and change tickets.
• Participate in vendor selection by providing technical requirements into RFP document and by doing technical evaluation including Technical Proof of Concept testing.
• Steer network elements' feature roadmap by working closely with our strategic technology partners for software release planning, budget submissions and provide inputs for business case preparation.
• Drive platform improvements, enable automation and implement new solutions that enable DevOps capabilities and support business strategy of building once and deploy multiple time .

Requirements

• Requirements‑to‑Design Translation
• Proven ability to translate complex business and technical requirements into clear, implementable network designs, explicitly documenting assumptions, constraints, trade‑offs, and justifying design decisions against alternatives.
• High‑quality Design Documentation & Technical Authority
• Strong technical documentation skills, producing high‑quality HLDs using Confluence or similar wiki‑based tooling, and acting as a technical authority-constructively challenging sub‑ optimal designs and influencing design decisions.
• ISP Subscriber & BNG Expertise
• Deep experience with ISP subscriber technologies including IPoE (DHCPv4/DHCPv6), PPPoE , L2TP, RADIUS, and stateful/stateless BNG redundancy models.
• Core IP/MPLS & VPN Architecture Design
• Deep understanding of telco network architectures with proven experience designing IP/MPLS networks using IS‑IS, Segment Routing, MP‑BGP, LDP, advanced HQoS , and Layer 2/3 VPN technologies including EVPN, T‑LDP, VPLS, and IPv6.
• Automation & Configuration Management
• Solid understanding of Python, Ansible, and Git‑based configuration management, with the ability to design scalable, repeatable automation to support network deployment and change.
• Telemetry & Operational Assurance
• Experience defining telemetry requirements and KPIs to support operational assurance, fault investigation, and capacity planning across metro and core networks.
• Packet‑level Network Behaviour
• Strong understanding of packet‑level behaviour, including TCP/UDP, MTU and PMTUD, and encapsulation/overhead impacts across access and core networks; able to interpret relevant standards (e.g. RFCs) and validate behaviour through packet‑level inspection.
• End‑to‑End Technical Ownership
• Ability to own technical solutions end‑to‑end, including software/hardware selection, bug scrubs, security vulnerability assessment, and collaboration with test and implementation teams on test plans, defects, test reports, MOPs, and change tickets.
• Good to have skills
• Practical experience with OpenConfig and vendor ‑ specific NETCONF/YANG, including JSON/XML payloads.
• Strong understanding of IPv4aaS , particularly MAP-T .
• Strong understanding of BNG from Nokia (7750) and/or Huawei (CX600/NE8000) .
• Good understanding of Cisco IOS-XR product line such as 8000, ASR9 K and NCS5K .
• Experience contributing to and/or owning network standards .
• Team overview
• Group Communications & Infrastructure
• The rewards
• There's one thing people can't stop talking about when it comes to #LifeAtSky : the perks . Here's a taster:
• Sky Q, for the TV you love all in one place
• The magic of Sky Glass at an exclusive rate
• A generous pension package
• Private healthcare
• Discounted mobile and broadband
• A wide range of Sky VIP rewards and experiences
• Inclusion & how you'll work
• We are a Disability Confident

Benefits

Additional Information

We believe in better. And we make it happen. Better content. Better products. And better careers. Working in Tech, Product or Data at Sky is about building the next and the new. From broadband to broadcast, streaming to mobile, SkyQ to Sky Glass, we never stand still. We optimise and innovate. We turn big ideas into the products, content and services millions of people love. And we do it all right here at Sky.

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