ESN Engineer

ESN Engineer

Ericsson – Watford, 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 you to be self‑managing, proactively maintaining your sites and collaborating closely with other ESN engineers and the wider FSO team to solve problems, with the goal of boosting network resilience and network availability. You must be prepared to travel and stay away from home for service recovery mainly on the remote islands, and to participate in a 24/7 on‑call rota and potential shift work to handle tasks outside normal business hours.

• Conduct corrective maintenance activities and manage site facility operations.
• Take full responsibility for assigned Emergency Service Network (ESN) Sites, proactively maintaining them to prevent failures and coordinating with other technical teams to resolve any issues.
• Lead problem management for your area, resolving major issues in your own and neighbouring areas.
• Work individually or as part of the FSO and wider Ericsson teams to achieve right‑first‑time resolution within customer SLA’s without compromising safe working practices.
• Carry out reactive and proactive maintenance on multi‑customer, multi‑technology networks, achieving agreed performance targets (Mostly EE/ESN).
• Participate in a 24×7 call‑out 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 employed 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, cell planning.
• Radio access network and core network architecture.
• Antenna systems, mast‑head amplifiers, feeder systems and connectors.