ESN Engineer

Ericsson – Sunbury-On-Thames, England, United Kingdom

As an ESN Engineer you will own a designated group of sites, working as part of a four‑person team covering adjacent territories. The role requires self‑management, proactive maintenance of your sites and close collaboration with other ESN engineers and the wider FSO team to boost network resilience and availability. It demands a flexible work schedule, including participation in a 24/7 on‑call rota and potential shift work outside normal business hours.

You must be prepared to travel and stay away from home for service recovery, primarily on remote islands, and be available to lead and complete recovery during major network events.

• Conduct corrective maintenance activities and manage site facility operations.
• Take full responsibility for assigned ESN sites, proactively maintaining them to prevent failures and coordinating with the technical team to resolve any issues.
• Lead problem management in your area, resolving major issues in your own and neighbouring areas.
• Work individually and with the FSO and wider Ericsson teams to achieve right‑first‑time resolution of work within customer SLA’s while maintaining safe working practices.
• Carry out reactive and proactive maintenance on multi‑customer, multi‑technology networks, meeting agreed performance targets (mostly EE/ESN).
• Participate in the 24×7 callout rota covering all equipment in the Service Area.
• Assist in the development and review of FSO processes and procedures to maximise efficiency.

• Radio Frequency (RF) transmission and receiver systems in mobile communication equipment.
• AC/DC power systems (single phase and three phase).
• UPS systems and deployed ESN generators.
• Satellite backhaul systems.
• Rectification and power distribution systems.
• GSM, UMTS and LTE fundamentals.
• Cellular network fundamentals: mobility management and cell planning.
• Radio access network and core network architecture.
• Antenna systems, mast head amplifiers, feeder systems and connectors.

Dumfries, Scotland – applicants must currently reside in or be willing to relocate to Dumfries.