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Tomorrow's health is... Defining a new possible.

Data Engineer

London, United Kingdom Job ID JR0146516 Category Data Engineering, Information Technology Post Date May. 05, 2026
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ClarusONE Sourcing Services, LLP,provides strategic generic pharmaceutical services for both Walmart Stores, Inc. and McKesson Corporation.  Its’ mission is to enable access to affordable medicines, which it has successfully been doing since itsinceptionin 2016.

ClarusONE is a joint venture between Walmart and McKesson, two of the top 10 biggest corporations in the USA, according to the Fortune 500 list. They have more than two decades of history working together to improve the quality and lower the cost of pharmaceutical care to patients. This partnership leverages McKesson’sdemonstratedstrength andexpertisein global pharmaceutical sourcing in conjunction with Walmart’s strength and commitment to delivering leading health and wellness services to their customers.

The environment in which ClarusONE operates constantly requires the organisation to adapt and change, seeking greater efficiency in how it works through improved process, technologyinnovationand new ways of working. Delivering these changes with discipline and rigour will ensure that they land with maximum impact, delivering for ourMembersand for the patients that they serve. 

ClarusONE Sourcing Services is headquartered in London and prides itself on its can-do attitude that has ensured millions of Americans pay less when buying generic pharmaceuticals every day.

Job Title:Data Engineer

Location:London, United Kingdom

Level:P3

Reports to:SeniorManager, Data Engineering

Job Purpose:

The highly competitive US generic pharmaceutical sector continues to challenge every element of the supply chain. In this constantly changing environment, patients can be served through multiple channels in new & different ways, whilst those that dispense prescriptions, the wholesale distributors that supply them and manufacturers all have to react and respond to how the sector is evolving, which is also heavily influenced by payers, regulatory bodies and federal & state law.  To succeed in this environment requires organisations to adapt and change and, at ClarusONE, we play a key role in working alongside multiple stakeholders to deliver the most efficient supply chain model whilst generating value for ourMembers, their customers and patients through innovative sourcing solutions.

The Data Engineer is primarily responsible fordata pipeline creation,designandmaintenancein support of all business functions.The capability this role brings willallow ClarusONE to executedata ingestion and transformation quickly, accurately and efficiently;enabling optimal use and analytical insight to support a wide range of strategic and operational business decision processes, in turn drivingbusiness growth,optimising processesand supporting automation though the use of appropriate data/information.

The Data Engineer will be part of the data engineering team,buildingandmaintainingour data infrastructure. This positionis responsible formonitoring and supporting our production environment,buildingand testing new data pipelines ina modern data warehousing landscape.They will work within the data governance framework at ClarusONE ensuring thatsensitive data is properlyprotected, andwillcollaborateclosely withboththe analytics and data science teams, and the software engineering function, tomaintainan accurate,efficientand conformant dataenvironment.

our customers in the analytics team and across ClarusONEto;and productionising data science and machine learningprocesses.

Responsibilities:

  • Work across the development lifecycle from prototyping, to delivering production data solutions to resolving data issues with the business users

  • Provide dataexpertiseandeffectively supportthe ongoing demand for new or enhanced data sets, aligned to the architecture plan and strategic direction of the data environment

  • Executethe development of dataingestion andtransformationpipelinesusing multiple technologies (SQL, Snowflake,python,DBT / Astronomer, APIs etc);leveragingagile methodologies

  • Support strategic initiatives; design, build and support data solutions conducive to business insights,reportingand analytics

  • Applyingdata engineeringbest practiceand tools to create andmaintaindata pipelines and extract,transformand load data. 

  • Applyingthegood coding standards andprinciplesincludinglogging and unit testingto the pipelines created.

  • Supporting the production data warehouse, communicating issues promptly to stakeholders and working to address them

  • Present and defend complex ideas and recommendation to various level in the organisation

  • Collaborate with all team members to problem solve and create solutions

  • Be an advocate and champion of the ClarusONE data and information assets

  • Recommend process changes to achieve minimal error rates. Track errors and improve process efficiencies

(The above statements describe the general nature and level of work being performed in this job. They are not intended to be an exhaustive list of all duties.)

Requirements:

Education/Experience

  • Bachelor’s degreelevel or above

  • 3+years’ experience ina datacentric function

  • Experiencein the healthcare fieldor similar highly regulated environment(sales,purchasingor distribution)preferred, though notrequired.

Knowledge/Skills- Essential

  • Experience of building data ingestion and transformation pipelines

  • Experience working within a structured development and release environment (e.g. peer review, coding standards, CI/CD release processes)

  • Experience of testingand QAin a data context

  • Strongcoding skills, particularly SQL andpython

  • Experience with database technologies and concepts (Snowflake, Databricksor othercloud baseddata warehouses)and data transformation processes(using DBT / Airflow an advantage)

  • Proven written and verbal communication skills, and attention to detail

  • 3years experiencein a data-centric function

  • Willingness to develop new technical skills and become an SME fornew technologiesadopted by the business 

  • Enthusiasm for the data analytics landscape and continued focus on how the market is accelerating

McKesson has become aware of online recruiting-related scams in which individuals who are not affiliated with or authorized by McKesson are using McKesson’s (or affiliated entities, like CoverMyMeds or RxCrossroads) name in fraudulent emails, job postings or social media messages. In light of these scams, please bear the following in mind:

McKesson Talent Advisors will never solicit money or credit card information in connection with a McKesson job application.


McKesson Talent Advisors do not communicate with candidates via online chatrooms or using email accounts such as Gmail or Hotmail. Note that McKesson does rely on a virtual assistant (Gia) for certain recruiting-related communications with candidates.

McKesson job postings are posted on our career site: careers.mckesson.com.

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McKesson has become aware of online recruiting-related scams in which individuals who are not affiliated with or authorized by McKesson are using McKesson’s (or affiliated entities, like CoverMyMeds or RxCrossroads) name in fraudulent emails, job postings or social media messages. In light of these scams, please bear the following in mind:

  • McKesson Talent Advisors will never solicit money or credit card information in connection with a McKesson job application.
  • McKesson Talent Advisors do not communicate with candidates via online chatrooms or using email accounts such as Gmail or Hotmail. Note that McKesson does rely on a virtual assistant (Gia) for certain recruiting-related communications with candidates.
  • McKesson job postings are posted on our career site: careers.mckesson.com.

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