Senior Network Engineer

About this role

Redhill Surrey Based -Fixed Term Contract 12 months
About Indra Group UK & Ireland
Indra is a leading global technology and consulting company, and a trusted technological partner for the core business operations of its clients worldwide. It stands at the forefront of key sectors including Transport, Defence, Air Traffic Management and Space, alongside advanced Information Technology services delivered through Minsait, and cutting-edge capabilities in Sovereign AI, Cybersecurity, and Cyberdefence via IndraMind.
The company’s business model is built around a comprehensive portfolio of proprietary products, combining strong innovation with a high-value focus for customers.
With more than 2,500 projects implemented across 50 countries and over 100 cities, Indra is a global benchmark in innovative transportation and mobility solutions. It is recognised as one of the world’s top three companies in public transportation management systems. Indra’s technology supports the daily journeys of over 78 million people, helping to reduce more than 10 million tonnes of CO₂ emissions annually, and helping save nearly 3,000 lives through improved traffic management and road safety.
Indra Group is paving the way to a more secure and better-connected future through innovative solutions, trusted relationships and the very best talent. Sustainability sits at the heart of its strategy and culture, driving efforts to address current and future social and environmental challenges.
In the 2024 financial year, Indra achieved revenues of €5.5 billion, over 60,000 professionals, maintained a local presence in 46 countries, and operated across more than 140 countries worldwide.
As the technological partner for its customers’ key operations, Indra is at the core of their business, and Indra’s four values guide everything we do:
Innovation - Our capacity for innovation, cutting-edge solutions, and specialised team of professionals enables us to drive a safer, more connected future through technology.
Trust - We work with strength, commitment, and reliability, delivering quality solutions to build trust with customers, employees, partners, investors, and society.
Connection - We harness the power of collaboration, connect ideas and solutions, and adapt to our customers’ needs, supporting them on the path to a better future.
Foresight - We anticipate future needs to make the world safer and more connected, transforming our experience and knowledge into solutions for a better tomorrow.

About the Project
Transport for London (TfL) has awarded Indra a long-term contract to operate, develop, enhance and expand ticketing and access control systems across London’s transport network through to 2034, with extension options to 2039.
This programme covers the maintenance, operation and evolution of a large-scale, complex ecosystem, including turnstiles, validators, ticket machines, sales terminals, back-office systems, payment gateways, IT infrastructure and cybersecurity that supports over 8.6 million daily journeys.
Therefore, Indra will become TfL’s strategic technology partner to guarantee the operation and evolution of the world’s largest and most sophisticated ticketing system. Following a transition period of approximately two years, Indra will serve as the sole provider across the network that includes more than 8,500 buses, nearly 400 Underground stations, around 300 rail stations (Overground, DLR, Elizabeth Line and suburban services), 4,000 Oyster Card outlets, seven customer service centres, and 24 river boat boarding points.
Drawing on over 30 years of experience in urban public transport solutions, Indra will manage and evolve all aspects of the system. The project also envisages, in partnership with TfL, the implementation of new technologies to develop the system, make it more efficient and automate key processes; in short, to jointly create the next generation of the ticketing system for London.
Summary
We are seeking a Senior Network Engineer to support the transition, implementation and future operation of enterprise network services, ensuring that network infrastructure is secure, resilient, well documented and capable of supporting business-critical operations.
Although the long-term approach is to provide stable, ongoing network services and support transformation projects, the immediate focus of the role will be on service transition and project implementation activities, including technical delivery, operational readiness, network documentation, change support and handover into BAU service operations.
The successful candidate will provide strong technical expertise across LAN, WAN, data centre, wireless, mobile and security technologies, working closely with customer stakeholders, internal engineering teams, service management functions, third-party suppliers and project teams to deliver reliable technical solutions for both transition activities and ongoing transformation initiatives.
The position requires a proactive engineer with excellent troubleshooting skills, strong ownership of technical deliverables and the ability to operate effectively in complex, multi-site and mission-critical environments during transition, transformation and steady-state service phases.
Key responsibilities
· Service transition and implementation: Support incoming service transition and project implementation activities, including technical delivery, operational readiness, testing, documentation and handover into BAU operations.
· Network operations and support: Support stable ongoing network services by managing network-related incidents, service requests and escalations in line with agreed service levels.
· Transformation projects: Contribute to network transformation initiatives by providing technical input, implementation support, migration assistance and specialist engineering expertise.
· Technical implementation: Install, configure, commission and support network infrastructure platforms including routers, switches,…