Performance Data Quality Specialist

Who We Are

At Network Rail, we're part of a large family serving millions of passengers and freight users throughout the UK every day. Our service impacts millions of people and we strive to become more efficient as we enhance, maintain and operate our network. Now is a fantastic time and join our team in Wales and Western region as we finalise the reforms to our maintenance organisation which will deliver:

• A safer and more reliable and punctual service for passengers and employees - quicker fault fixes by more agile multi-disciplined response teams.
• Individual rostering - enabling us to send the right number or people to fix a fault.
• Multi-skilling - investing in the knowledge and skills of our people so they are better equipped to fix the most common faults themselves.
• Accelerated and improved technology deployment - we have a raft of labour and life-saving technology ready to be rolled out.

Our passengers and freight users are at the heart of everything we do. We help connect people to their friends and families and get goods to their destination safely and efficiently. We're an organisation where people matter. When your part of our team, you matter to us and you matter to millions. Watch our video to find out more!

About our people and the recruitment process - We're an inclusive employer of choice and we welcome applications from everyone! We look for opportunities to offer great opportunities to learn and grow through personal and professional development. And, if you make the grade then you can look forward to a rewarding and fulfilling career with a company that joined the top 50 in the Glassdoor's 2021 Best Places to Work.

We want to help deliver a railway which is safe, reliable, affordable and that provides great customer service to everyone. For more information about Network Rail click here

About the role

Overview

To manage the quality of delay attribution across the business.

Reconciling, auditing and correct reporting of train running data and schedules

Ensuring delays and cancellations are allocated to the correct prime cause incident(s)

Good communication skills and ability to build relationships with Train Operators and other Network Rail teams Interrogate Network Rail IT systems and industry specific applications

Your Main Responsibilities will be to

Develop audit protocols to measure the level of data quality delivered.

Undertake quality checks in line with the Performance Improvement Process Manual to maintain the quality of delay attribution at a consistent level.

Produce data quality reports, identifying variances, with action plans to resolve.

Monitor compliance with the performance data accuracy code and business process manual through systems compliance checks e.g. berth offsetting.

Act as the focus for performance data quality issues, identifying and making recommendations for improvements to the train performance data systems.

Represent the route on the Data Quality Group, in developing and maintaining a Network Rail specification for performance systems and processes.

Pay and Rewards

Salary: This role is a £35,582 - £43,400 per annum.

As a Network Rail employee, you will enjoy a wide range of benefits!

• Privileged staff travel - Leisure travel discount of 75% on all leisure travel and includes family members.
• A subsidy of up to 75% on rail and underground season tickets if you travel to work on the train.
• GWR ticket alliance, Heavily discounted all day passes for you and up to 3 friends and family to use across the GWR network (48 passes per year)
• Benefits package including healthcare offers, a cycle to work scheme, discounted healthcare club membership, and a discounted offers and benefits including childcare, healthcare and online shopping site.
• A range of Pension schemes to choose from
• Effectively manage work-life balance with a 35hrs per week contract, hybrid working, flexible working, flexible leave, and enhanced family friendly support.
• 5 days paid volunteering leave.
• 2 weeks paid reserve leave for the Armed Forces community.
• In Wales and Western region, you will have the opportunity to join PROUD, our reward and recognition scheme where you can say thanks and recognise colleagues across the region who have demonstrated outstanding values and behaviours.

To find out more about the benefits at Network Rail, click here .

More about the role and your application

Closing date: 7th August 2026 Late applications will not be accepted. This vacancy is also being advertised externally.

This role requires working in the office for a least 60% of the working week

To submit your application, click apply now . For tips to help you prepare and apply click here

We want to ensure everyone has an equal opportunity. Therefore, s hould you require any reasonable adjustments/modifications, please do let us know by including within your application

Our Drugs and Alcohol Standard has changed. All prospective candidates will be required to undergo and pass a drugs and alcohol test. Your application will be rescinded if you record a positive test. All positive drugs and alcohol test results for prospective candidates will be securely held on Sentinel database and a 5-year suspension from applying for a safety critical role, a role which requires PTS certification or a Key Safety role on Network Rail Managed Infrastructure will be enforced.

Your experience and skills

You will ideally have

• Analytical skills
• Understanding of financial disciplines
• Understanding and experience of train operations and the railway business
• Working knowledge of contractual matrix
• Keeping people safe on the railway is at the heart of everything we do. Safe behaviour is therefore a requirement of working for Network Rail. You should demonstrate your personal dedication to safety within your application.

Not sure if you meet all the requirements? Let us decide . Some of these criteria may be learnt in role. Therefore, if you do not meet all the criteria, please submit your application. We will screen your application against these criteria to assess the best match.

Key Information

Vacancy Details

Number of Positions

Contract Type

Permanent

Hours

Full Time

Salary

£35,582 - £43,400

Location

Swindon Western House, Swindon

Geographical Area

South West England

Closing Date

07-AUG-2026

Job Category

Administration & Secretarial

Function

Wales & Western Region

Organisation

OW Route Performance Measurement Manager (112750) G5

Location Map