Senior Unix Engineer

Redhill 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 Unix Engineer to support the Mobilisation, Knowledge Transfer, Operational Readiness and Early Life Support activities associated with the transition of critical Unix/Linux and Solaris services into the Indra/Minsait operating model.

This is a technically focused role with strong operational depth in enterprise Unix platforms, with particular emphasis on Oracle Solaris, Solaris Zones, ZFS, SPARC environments, and Red Hat Enterprise Linux. The successful candidate will help establish the future Unix support capability, validate day-to-day operational processes, capture and remediate knowledge gaps, and ensure that platform operations can be assumed safely and sustainably.

The role will work closely with customer stakeholders, incumbent supplier SMEs, service management functions, infrastructure teams, application support teams, security representatives and programme leadership. The emphasis is on controlled mobilisation, operational procedure validation, incident readiness, monitoring and alerting coverage, backup and recovery assurance, service acceptance evidence and early-life stabilisation following service takeover.

Requirements

Key responsibilities

• Mobilisation and transition readiness: Support Unix and Solaris mobilisation activities through environment readiness checks, access validation, tooling enablement, dependency confirmation and transition readiness evidence for service takeover.

• Knowledge transfer and operational readiness: Participate in structured knowledge transfer, shadowing and reverse shadowing across Unix/Linux and Solaris services, focusing on operational procedures, failure scenarios, daily health checks, platform dependencies, escalation paths and known risks.

• Unix/Solaris operations: Operate and maintain enterprise Unix platforms, with emphasis on Oracle Solaris, Solaris Zones, ZFS, SPARC infrastructure and Red Hat Enterprise Linux; support availability, performance, capacity, housekeeping, patching preparation and configuration control.

• Incident, problem and service restoration: Act as a senior technical escalation point for complex Unix/Solaris incidents, performing triage, service restoration, root cause analysis and follow-up problem management activities in line with ITIL practices.

• Operational procedures and runbooks: Review, improve and create SOPs, runbooks, support guides and knowledge articles covering start/stop procedures, event response, backup validation,

recovery, patching, health checks, log review, performance investigation, capacity checks and failover support.

• Monitoring, backup and resilience assurance: Validate monitoring, alerting, backup, recovery, high availability and disaster recovery arrangements for Unix/Solaris platforms, ensuring operational evidence is available before service acceptance and during Early Life Support.

• Governance, risk and service acceptance: Support service acceptance, Go/No-Go reviews and transition governance by providing evidence of operational control, tooling access, documentation readiness, capability coverage, open risks and remediation actions.

• Early Life Support delivery: Provide 3rd-line and on-call support during Early Life Support after cutover, monitor incident trends and alerts, coordinate rapid resolution with adjacent teams, capture lessons learned and embed improvements into BAU processes.

Essential Skills

• Senior Unix/Linux Administration (Oracle Solaris & Red Hat Enterprise Linux)
• Solaris SPARC, Solaris Zones and ZFS Administration
• 3rd Line Unix/Linux Infrastructure Support
• Service Transition, Operational Readiness and Early Life Support
• Unix/Linux Troubleshooting, Shell Scripting and Root Cause Analysis
• Backup, Disaster Recovery and High Availability
• ITIL Service Management (Incident, Problem and Change Management)
• Knowledge Transfer and Operational Documentation
• System Performance, Capacity and Monitoring
• Strong Communication and Stakeholder Management Skills

Benefits

• Holidays: 25 days per annum + 8 days bank holidays (options to buy/sell days).
• Pension – 4% employee and 4% employer.
• Private medical insurance (including dental & optical).
• Life assurance.
• Income protection.
• Employee assistance programs.
• Flexible/remote working options.
• Charitable initiatives.
• Social events (formal & informal).
• Learning and development programs.
• Innovative & collaborative work environment.

Indra is an equal employment opportunity employer. Applicants are considered without regard to race, colour, religion, sex, sexual orientation, gender identity, origin, disability or other characteristics protected by law.