Senior Data Analyst

Cardiff, Wales, United Kingdom

1/25/2025

Location

Cardiff, GB

Department Name

DN Director, Business Planning & Reporting (338296) G5

About Network Rail

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.

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 you're part of our team, you matter to us, and you matter to millions. Watch our video to find out more!

The Wales & Western region includes more than 2,700 miles of railway and we serve communities and businesses of Wales, the Thames Valley, West of England, and the Southwest Peninsula.

Our ambition to be responsive to passengers and freight users drives us every day and we're empowered to do the right thing for those who use the rail network. We actively challenge unsafe practices and take responsibility for addressing risks, resolving issues, and protecting safety and wellbeing.

About our people and the recruitment process - We’re an inclusive employer of choice and we welcome applications from everyone!

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.
• 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, 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 .

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

Yn Network Rail, rydym yn rhan o deulu mawr sy’n gwasanaethu miliynau o deithwyr a defnyddwyr nwyddau ledled y DU bob dydd. Mae ein gwasanaeth yn effeithio ar filiynau o bobl ac rydym yn ymdrechu i ddod yn fwy effeithlon wrth i ni wella, cynnal a gweithredu ein rhwydwaith.

Mae ein teithwyr a’n defnyddwyr nwyddau wrth wraidd popeth a wnawn. Rydym yn helpu i gysylltu pobl â'u ffrindiau a'u teuluoedd a chael nwyddau i'w cyrchfan yn ddiogel ac yn effeithlon. Rydym yn sefydliad lle mae pobl yn bwysig. Pan fyddwch chi'n rhan o'n tîm, rydych chi'n bwysig i ni, ac rydych chi'n bwysig i filiynau. Gwyliwch ein fideo i ddarganfod mwy!

Mae rhanbarth Wales & Western yn cynnwys mwy na 2,700 milltir o reilffordd ac rydym yn gwasanaethu cymunedau a busnesau Cymru, Dyffryn Tafwys, Gorllewin Lloegr, a Phenrhyn De-orllewin Lloegr.

Mae ein huchelgais i fod yn ymatebol i deithwyr a defnyddwyr nwyddau yn ein gyrru bob dydd ac rydym wedi'n grymuso i wneud y peth iawn i'r rhai sy'n defnyddio'r rhwydwaith rheilffyrdd. Rydym yn mynd ati i herio arferion anniogel ac yn cymryd cyfrifoldeb am fynd i’r afael â risgiau, datrys problemau, ac amddiffyn diogelwch a lles.

Am ein pobl a’r broses recriwtio - Rydym yn gyflogwr cynhwysol o ddewis ac rydym yn croesawu ceisiadau gan bawb!

Fel gweithiwr Network Rail, byddwch yn mwynhau ystod eang o fanteision!

• Teithio staff breintiedig - Gostyngiad teithio hamdden o 75% ar bob taith hamdden ac mae'n cynnwys aelodau o'r teulu.
• Cymhorthdal o hyd at 75% ar docynnau tymor rheilffordd a thanddaearol os byddwch yn teithio i'r gwaith ar y trên.
• Cynghrair tocynnau GWR – Tocyn diwrnod cyfan am bris gostyngol i chi a hyd at 3 ffrind a theulu i'w defnyddio ar draws rhwydwaith GWR.
• Pecyn buddion yn cynnwys cynigion gofal iechyd, cynllun beicio i'r gwaith, aelodaeth clwb gofal iechyd am bris gostyngol, a chynigion a buddion gostyngol gan gynnwys gofal plant, gofal iechyd a safle siopa ar-lein.
• Amrywiaeth o gynlluniau pensiwn i ddewis ohonynt
• Rheoli cydbwysedd bywyd a gwaith yn effeithiol gyda chontract 35 awr yr wythnos, gweithio hybrid, a gwell cefnogaeth sy'n ystyriol o deuluoedd.
• 5 diwrnod o absenoldeb gwirfoddoli â thâl.
• 2 wythnos o absenoldeb gyda thâl wrth gefn i gymuned y Lluoedd Arfog.
  
  
  

Yn rhanbarth Cymru a’r Gorllewin, cewch gyfle i ymuno â PROUD, ein cynllun gwobrwyo a chydnabod lle gallwch ddiolch a chydnabod cydweithwyr ar draws y rhanbarth sydd wedi dangos gwerthoedd ac ymddygiad rhagorol.

I ddarganfod mwy am y buddion yn Network Rail, cliciwch yma.

Rydym am helpu i ddarparu rheilffordd sy'n ddiogel, yn ddibynadwy, yn fforddiadwy ac sy'n darparu gwasanaeth cwsmeriaid gwych i bawb. I gael rhagor o wybodaeth am Network Rail cliciwch yma

Brief Description

As a Senior Data Analyst, you will lead the delivery of innovative analysis using a variety of advanced analytical techniques to improve business performance. The role will involve collaborating with internal and external stakeholders to develop and implement analysis that inform business decisions. You will be responsible for delivering high-quality, timely business performance reports and providing insights on key trends and issues. This will include analysis of passenger demand patterns across the network and forecasting the trajectory of a wide range of KPIs tracked at monthly business reviews.

You will also play a key role in improving analyst competencies across the region. You will lead training events and analyst community gatherings to enhance skills and knowledge. Your responsibilities will include developing a framework for training and driving technical excellence to enhance the regions analytical capability.

Fel Uwch Ddadansoddwr Data, byddwch yn arwain y gwaith o gyflwyno dadansoddiad arloesol gan ddefnyddio amrywiaeth o dechnegau dadansoddol uwch i wella perfformiad busnes. Bydd y rôl yn cynnwys cydweithio â rhanddeiliaid mewnol ac allanol i ddatblygu a gweithredu dadansoddiadau sy'n llywio penderfyniadau busnes. Byddwch yn gyfrifol am gyflwyno adroddiadau perfformiad busnes amserol o ansawdd uchel a rhoi cipolwg ar dueddiadau a materion allweddol. Bydd hyn yn cynnwys dadansoddi patrymau galw teithwyr ar draws y rhwydwaith a rhagweld trywydd ystod eang o DPAau a gaiff eu holrhain mewn adolygiadau busnes misol.

Byddwch hefyd yn chwarae rhan allweddol wrth wella cymwyseddau dadansoddwyr ar draws y rhanbarth. Byddwch yn arwain digwyddiadau hyfforddi ac yn dadansoddi cynulliadau cymunedol i wella sgiliau a gwybodaeth. Bydd eich cyfrifoldebau yn cynnwys datblygu fframwaith ar gyfer hyfforddi a gyrru rhagoriaeth dechnegol i wella gallu dadansoddol y rhanbarth.

About The Role (External)

Your Main Responsibilities will be to:

• Lead a performance analysis team, providing challenge, growth and development of individuals and the team as a whole.
• Champion innovation and technical excellence and provide drive to improve the understanding of performance within the business.
• Deliver relevant business performance reporting requirements to time and quality. Provide insight on key trends and issues.
• Lead the provision of analysis to various internal and external stakeholders in order to improve business performance. Develop analysis and reporting tools to effectively analyse, forecast and inform on t rends and issues, including the development of predictive and prescriptive techniques.
• Understand cross functional and cross industry needs for business performance improvement. Proactively link other functions and organisations to provide a single shared set of performance analysis tools.
• Assume business systems ownership for the data systems needed to provide high quality analysis and reporting. Provide data knowledge and expertise in the support and management of business aspects of data warehouse and reporting tools.
• Develop a framework to improve analyst competencies across the region. Lead analyst community events and in-house training.
• Develop, implement and review key performance indicators, both internally and externally within the industry.
• Advise the team on technical demand forecasting and investment appraisals.
  
  
  

You will ideally have

• Degree and/or post graduate qualification in a relevant discipline, such as Computer Science, Mathematics, Statistics, or equivalent experience.
• Significant practical experience in descriptive / predictive modelling and visualisation methods and techniques.
• Ability to lead, enthuse and develop a team
• Ability to provide excellent project management
• Demonstrate flair for problem solving with strong data analysis skills
• Competent in statistical forecasting techniques
• Ability to develop concepts into analysis tools and techniques
• Good communication skills including presentation and listening
• Strong skills and practical experience using Python or R, SQL or alternatives, MS Power Platform (inc. PowerBI), MS SharePoint and excellence in MS Excel.
• Experience of analysing large datasets and using complex analytical frameworks to support decisions.
  
  
  

What Could Set You Apart

• Six Sigma black belt
• Ability to describe complex statistical relationships
• Understanding of performance data systems
• Practical experience of economic analysis or investment appraisal
  
  
  

Not sure if you meet all the requirements? Let us decide.

Eich Prif Gyfrifoldebau fydd:

• Arwain tîm dadansoddi perfformiad, gan ddarparu her, twf a datblygiad unigolion a'r tîm cyfan.
• Hyrwyddo arloesedd a rhagoriaeth dechnegol a darparu ysgogiad i wella dealltwriaeth o berfformiad o fewn y busnes.
• Cyflawni gofynion adrodd perfformiad busnes perthnasol yn unol ag amser ac ansawdd. Darparu cipolwg ar dueddiadau a materion allweddol.
• Arwain y gwaith o ddarparu dadansoddiadau i amrywiol randdeiliaid mewnol ac allanol er mwyn gwella perfformiad busnes. Datblygu offer dadansoddi ac adrodd i ddadansoddi, rhagweld a llywio tueddiadau a materion yn effeithiol, gan gynnwys datblygu technegau rhagfynegi a rhagnodol.
• Deall anghenion traws-swyddogaethol a thraws-ddiwydiant ar gyfer gwella perfformiad busnes. Cysylltu swyddogaethau a sefydliadau eraill yn rhagweithiol i ddarparu un set o offer dadansoddi perfformiad a rennir.
• Cymryd perchnogaeth systemau busnes ar gyfer y systemau data sydd eu hangen i ddarparu dadansoddiad ac adrodd o ansawdd uchel. Darparu gwybodaeth ac arbenigedd data wrth gefnogi a rheoli agweddau busnes ar warws data ac offer adrodd.
• Datblygu fframwaith i wella cymwyseddau dadansoddwyr ar draws y rhanbarth. Arwain digwyddiadau cymunedol dadansoddwyr a hyfforddiant mewnol.
• Datblygu, gweithredu ac adolygu dangosyddion perfformiad allweddol, yn fewnol ac yn allanol o fewn y diwydiant.
• Cynghori'r tîm ar ragolygon technegol galw a gwerthusiadau buddsoddi.
  
  
  

Yn ddelfrydol bydd gennych chi

• Gradd a/neu gymhwyster ôl-raddedig mewn disgyblaeth berthnasol, megis Cyfrifiadureg, Mathemateg, Ystadegaeth, neu brofiad cyfatebol.
• Profiad ymarferol sylweddol mewn dulliau a thechnegau modelu disgrifiadol / rhagfynegol a delweddu.
• Y gallu i arwain, ennyn brwdfrydedd a datblygu tîm
• Y gallu i ddarparu rheolaeth prosiect ardderchog
• Arddangos dawn datrys problemau gyda sgiliau dadansoddi data cryf
• Yn gymwys mewn technegau rhagweld ystadegol
• Y gallu i ddatblygu cysyniadau yn offer a thechnegau dadansoddi
• Sgiliau cyfathrebu da gan gynnwys cyflwyno a gwrando
• Sgiliau cryf a phrofiad ymarferol gan ddefnyddio Python neu R, SQL neu ddewisiadau amgen, MS Power Platform (gan gynnwys PowerBI), MS SharePoint a rhagoriaeth mewn MS Excel.
• Profiad o ddadansoddi setiau data mawr a defnyddio fframweithiau dadansoddol cymhleth i gefnogi penderfyniadau.
  
  
  

Beth allai eich gosod ar wahân

• Gwregys du Six Sigma
• Y gallu i ddisgrifio perthnasoedd ystadegol cymhleth
• Dealltwriaeth o systemau data perfformiad
• Profiad ymarferol o ddadansoddiad economaidd neu werthuso buddsoddiad
  
  
  

Ddim yn siŵr a ydych chi'n bodloni'r holl ofynion? Gadewch i ni benderfynu.

How To Apply (External)

Salary: £46,701 to £53,589per annum.

Closing date: 7 th February 2025.

Please get your application in as soon as possible, we may close the advert before the listed closing date if we receive enough applications.Late applications will not be accepted.

Click ‘apply now’ to apply.

We are an equal opportunity employer and value diversity. We do not discriminate based on race, religion, national origin, gender, sexual orientation, age, marital status, or disability status. Click here for more information.

Diversity and inclusion are more than just buzz words for us. We’re constantly striving to make sure we provide a welcoming and safe environment for everyone.We recognise that certain groups are under-represented within our team and we’re working closely with our regional diversity and inclusion networks to make sure we support these groups as best as we can.

We are working in conjunction with the Cultural Fusion team. If you would like support with your application or interview please contact Wales&WesternCulturalFusion@networkrail.co.uk or visit the connect page: Wales and Western Cultural Fusion (sharepoint.com) . For all other support please contact your HR Business Partner.

Network Rail is a Disability Confident Leader and we’ll try our best to adapt the process and offer a reasonable alternative to help support people with disabilities access, apply and interview for roles. You can visit Evenbreak’s Career Hive for advice on accessibility support if you’re unsure of the options available. Should you require any reasonable adjustments/modifications, please add a note to your application.

All offers of employment are conditional upon satisfactory completion of pre-employment checks. Click here for more information

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.

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 on your application.

Cyflog: £46,701 i £53,589 y flwyddyn.

Dyddiad cau: 7 Chwefror 2025.

Anfonwch eich cais i mewn cyn gynted â phosibl, efallai y byddwn yn cau'r hysbyseb cyn y dyddiad cau a restrir os byddwn yn derbyn digon o geisiadau. Ni fydd ceisiadau hwyr yn cael eu derbyn.

Cliciwch ‘gwneud cais nawr’ i wneud cais.

Rydym yn gyflogwr cyfle cyfartal ac yn gwerthfawrogi amrywiaeth. Nid ydym yn gwahaniaethu ar sail hil, crefydd, tarddiad cenedlaethol, rhyw, cyfeiriadedd rhywiol, oedran, statws priodasol, na statws anabledd. Cliciwch yma am fwy o wybodaeth.

Mae amrywiaeth a chynhwysiant yn fwy na dim ond geiriau gwefr i ni. Rydym bob amser yn ymdrechu i sicrhau ein bod yn darparu amgylchedd croesawgar a diogel i bawb. Rydym yn cydnabod bod rhai grwpiau wedi’u tangynrychioli o fewn ein tîm ac rydym yn gweithio’n agos gyda’n rhwydweithiau amrywiaeth a chynhwysiant rhanbarthol i wneud yn siŵr ein bod yn cefnogi’r grwpiau hyn orau ag y gallwn.

Rydym yn gweithio ar y cyd â’r tîm Cyfuno Diwylliannol. Os hoffech gefnogaeth gyda'ch cais neu gyfweliad cysylltwch â Wales&WesternCulturalFusion@networkrail.co.uk neu ewch i'r dudalen cysylltu: Wales and Western Cultural Fusion (sharepoint.com). Am bob cymorth arall, cysylltwch â'ch Partner Busnes AD.

Mae Network Rail yn Arweinydd Hyderus o ran Anabledd a byddwn yn gwneud ein gorau i addasu’r broses a chynnig dewis arall rhesymol i helpu i gefnogi pobl ag anableddau i gael mynediad, gwneud cais a chyfweld am rolau. Gallwch ymweld â Evenbreak’s Career Hive am gyngor ar gymorth hygyrchedd os nad ydych yn siŵr o’r opsiynau sydd ar gael. Os bydd angen unrhyw addasiadau/addasiadau rhesymol arnoch, ychwanegwch nodyn at eich cais.

Mae pob cynnig cyflogaeth yn amodol ar gwblhau gwiriadau cyn cyflogaeth yn foddhaol. Cliciwch yma am fwy o wybodaeth

Mae ein Safon Cyffuriau ac Alcohol wedi newid. Bydd gofyn i bob darpar ymgeisydd gael a phasio prawf cyffuriau ac alcohol. Bydd eich cais yn cael ei ddileu os byddwch yn cofnodi prawf positif. Bydd holl ganlyniadau profion cyffuriau ac alcohol cadarnhaol ar gyfer darpar ymgeiswyr yn cael eu cadw’n ddiogel ar gronfa ddata Sentinel a bydd ataliad 5 mlynedd rhag gwneud cais am rôl sy’n hollbwysig i ddiogelwch, rôl sy’n gofyn am ardystiad PTS neu rôl Diogelwch Allweddol ar Seilwaith a Reolir gan Network Rail yn cael ei orfodi.

Mae cadw pobl yn ddiogel ar y rheilffordd wrth wraidd popeth a wnawn. Mae ymddygiad diogel felly yn un o ofynion gweithio i Network Rail. Dylech ddangos eich ymroddiad personol i ddiogelwch ar eich cais.