Principal Data Engineer
London / £95000 - £107000 annum
INFO
£95000 - £107000
LOCATION
London
Permanent
PRINCIPAL DATA ENGINEER
LONDON
£107,000
THE COMPANY
This consumer-tech powerhouse brings together several market-leading ecommerce brands, serving over 10 million customers across Europe. Now in an exciting phase of growth and innovation, this company is investing heavily in its data platform-giving this role a direct impact on shaping the future of how data empowers product, marketing, and operations at scale.
THE ROLE
As a Principal Data Engineer, you will play a pivotal role in designing and building a world-class, self-serve data platform. You'll be the technical owner within your team while collaborating across the wider data and ML landscape to drive architectural best practices, data quality, and scalability.
Specifically, you can expect to be involved in the following:
- Architecting and evolving data solutions primarily within Snowflake, alongside a modern
- Driving platform-level improvements with a focus on data usability, governance, and long-term sustainability
- Implementing robust engineering and software best practices across the data lifecycle
- Collaborating with Principal ML Engineers, Product Managers, and Engineering Directors to solve high-impact business problems
- Championing data platform evolution from fragmented legacy systems to streamlined, scalable infrastructure
SKILLS AND EXPERIENCE
The successful Principal Data Engineer will have the following skills and experience:
- 7+ years in data engineering, ideally within consumer-facing tech or B2C product companies
- Deep expertise in Snowflake, with strong hands-on experience in building scalable data warehousing solutions
- Proven ability to build self-serve data platforms and high-quality data assets
- Strong architectural acumen and software engineering fundamentals
- Experience driving adoption of data governance and improving data platform usage across internal teams
- stack including:
- Snowflake
- AWS
- DBT
- Airflow
- Python
- Kinesis
- Terraform
- CI/CD tools
BENEFITS
The successful Principal Data Engineer will receive the following benefits:
- Salary up to £107,000
- Hybrid working: 2 days per week in the London office
- 25 days holiday + bank holidays
- Enhanced parental leave policies
- Private medical insurance and life assurance
- Employee discounts across ecommerce brands
- Mental health and wellbeing support
- Learning and development budget
- Pension with company match
HOW TO APPLY
Please register your interest by sending your resume/CV to Joana Alves via the Apply link on this page.
CONTACT
SIMILAR
JOB RESULTS
Loyalty Manager – Contract
London
£300 - £340
+ Advanced Analytics & Marketing Insights
ContractLondon
To Apply for this Job Click Here
Loyalty Manager – Contract
Health & Beauty Retail Client
£300-£340 per day – Outside IR35
London – 2-3 days onsite
Are you a commercially minded loyalty specialist who thrives on shaping customer propositions across diverse European markets?
An international retail group, well known for its beauty and pharmacy brands, is looking for an experienced Loyalty Manager to join their Centre of Excellence team on a 12-month contract. This role supports group-level loyalty strategy across key European businesses, with an initial focus on developing and testing new propositions for various markets.
With over a dozen loyalty programmes already in play across their brand portfolio, the business recognises the need to evolve and elevate its group loyalty proposition. You’ll be joining an established central team and working closely with a Loyalty Specialist and another Loyalty Manager, reporting into the Group Loyalty function.
Role & Responsibilities
- Own the end-to-end development of loyalty concepts for European business units
- Collaborate cross-functionally with regional stakeholders, CRM and tech teams
- Lead the creation, testing and evolution of loyalty propositions – with an emphasis on app-centric experiences and digital-first engagement
- Provide thought leadership on best practice loyalty strategies and consumer trends
- Influence internal stakeholders and present ideas to senior leadership with clarity and conviction
Skills & Experience
- Proven experience in loyalty, CRM, customer strategy and consumer behaviour
- Strong stakeholder management and influencing skills – ideally in a pan-European context
- Strategic thinker with a hands-on approach to testing and iterating customer propositions
- Previous consultancy or group-level experience advantageous
- Comfortable working in a non-technical environment but confident engaging with tech and CRM teams
Benefits
£300-£340 per day outside IR35, 12 month contract, London, 2-3 days in the office
How to Apply
Register your interest by sending your CV to Lloyd Dunstall via the Apply link on this page
Loyalty / Customer Loyalty / Loyalty Programmes / CRM
To Apply for this Job Click Here
Loyalty Manager
West London
£250 - £325
+ Advanced Analytics & Marketing Insights
ContractWest London, London
To Apply for this Job Click Here
- 12-Month Contract
- Day Rate : £250-£325
- Hybrid Working in West London (3 days on site per week)
Key Responsibilities
- Lead the development of customer-centric loyalty propositions across European markets.
- Conduct loyalty program health checks and make data-driven recommendations to optimise performance.
- Project manage the end-to-end delivery of loyalty initiatives, from concept development to cross-functional execution.
- Build strong stakeholder relationships across local business units, operations, and group tech teams.
- Develop and maintain internal knowledge-sharing platforms, masterclasses, and strategic playbooks.
- Own the customer journey across both digital and in-store touchpoints.
Essential Skills & Experience
- Proven experience in loyalty or customer proposition development, preferably within the retail, travel, or subscription services industries.
- Strong understanding of customer behaviour, commercial drivers, and the ability to apply insight into meaningful strategies.
- Ability to manage multiple stakeholders across functions and regions, ideally with experience working cross-border or in a consultancy setting.
- Strategic thinker with a hands-on approach to deliver – able to shift between big-picture planning and tactical execution.
- Excellent communication, influencing, and storytelling skills – able to tailor messaging for varied audiences.
To Apply for this Job Click Here
Devops azure
€50000 - €55000
+ Data Engineering
PermanentHauts-de-Seine, ÃŽle-de-France
To Apply for this Job Click Here
DEVOPS AZURE
IDF Р2 jours de t̩l̩travail
UP TO 55K€ FIXES + 2K variable
Azure – Kubernetes – Terraform – MCO
L’ENTREPRISE
C’est une entreprise du retail qui développe des solutions innovantes. Dans un contexte de forte croissance, l’entreprise recherche un expert Devops sur Azure pour assurer la maintenance en condition opérationnelle de ses outils devops.
LE POSTE
Rattaché directement au Manager Devops et au sein d’une équipe de 5 personnes, vous aurez un rôle à 80% maintien des outils et 20% de taches Devops :
- Gérer les incidents et les SLA/SLO
- Analyser et lire des logs
- Suivre les tableaux de bord et les alertes.
- Automatiser et exécuter les processus de Build et de déploiement
- Identifier et répondre aux incidents de production et piloter l’analyse des root causes et les mesures correctives.
- Surveiller et prendre en charge de manière proactive la plateforme de l’entreprise
- Définir et mettre en Å“uvre des solutions de contournement et des mesures d’atténuation.
- Assurer la distribution, les performances et l’évolutivité de la plateforme.
- Vérifier les livraisons, les déployer dans un environnement de préparation et assurez la qualité
- Mettre en œuvre des améliorations, par exemple via des scripts ou des outils disponibles.
LE PROFIL
- Master ou équivalent en informatique
- Minimum 2 ans d’expérience dans l’utilisation de Linux, avec une expérience en automatisation et déploiement
- Connaissance obligatoire de Kubernetes et de Terraform
- Excellente maîtrise technique d’Azure ARM, PowerShell
- Des certifications Azure sont un atout
- Niveau d’anglais B2 requis
POSTULER
Merci de joindre votre cv à jour et je vous recontacterai dès que possible.
To Apply for this Job Click Here
Founding Software Engineer (Python and React)
London
£100000 - £180000
+ Data Engineering
PermanentLondon
To Apply for this Job Click Here
Founding Software Engineer (Python and React)
Remote (1 Week Per Month in Barcelona – Espensed)
Salary: £180,000 + Benefits
About the Company:
Our client is a UK-based deep tech start-up specializing in AI technology. They are looking for a Full Stack Engineer to join their dynamic and rapidly expanding team. This role offers a unique opportunity to work on cutting-edge AI systems and significantly impact the direction of a successful early-stage business.
Role Overview:
Key Responsibilities:
- AI Software Development: Develop and enhance the company’s AI-based (LLM/RAG) software.
- System Integration: Integrate offline versions of the software into customer systems.
- Backend Development: Work primarily with Python to build scalable backend systems and APIs.
Minimum Qualifications & Experience:
- Backend Proficiency: Strong experience in Python and building scalable backend applications.
- API and Database Skills: Experience in creating APIs and working with PostgreSQL databases.
- DevOps Expertise: Hands-on experience with setting up and managing stacks on AWS or GCP.
Why Join:
- Career Growth: Opportunity for rapid career progression in a fast-moving start-up.
- Influential Role: Shape the direction of a successful early-stage business.
- Flexible Work Environment: Enjoy flexible work hours and hybrid working options.
Rewards:
- Share Options: Generous share option scheme to benefit from the company’s success.
- Dynamic Team: Be part of an enthusiastic and innovative team.
Next Steps:
Interested in leveraging your skills in a groundbreaking AI-focused start-up? Apply now to be part of a team that’s at the forefront of deep tech innovation.
To Apply for this Job Click Here
Data Scientist / Data engineer
Paris
€57000 - €59000
+ Data Science & AI
PermanentParis, ÃŽle-de-France
To Apply for this Job Click Here
DATA SCIENTIST / DATA ENGINEER
UP TO 60K€ PACKAGE
2-3 JOURS DE TÉLÉTRAVAIL
Python – SQL – Pyspark – AWS – Tableau
Une startup parisienne dans le domaine de la santé recherche un Data Scientist / Data engineer expérimenté. Si l’environnement startup vous intéresse, alors cette offre est faite pour vous !
LE POSTE
Rattaché au Head of Data, vous rejoindrez l’équipe data composée de deux personnes. Vous serez en charge de l’extraction, la collecte et l’interprétation des données à fort enjeux business. Vos missions au quotidien :
- Collecter, centraliser et organiser les données s’assurant de leur qualité et leur disponibilité
- Détecter et corriger les données erronées, doublons ou incohérences, tout en garantissant un entrepôt de données bien structuré
- Améliorer occasionnellement des pipelines de données, concevoir des algorithmes d’analyse et des modèles prédictifs fiables, créer des POC sur des sujets IA
- Créer des dashboards, rapports et visualisations claires pour aider les équipes métier à exploiter les données
- Suivre les innovations data, proposer de nouvelles approches/outils pour améliorer les pratiques du pôle data
VOTRE PROFIL
- Bac+5 au sein d’une top école d’ingénieur en mathématiques, statistiques ou data science
- Minimum 2 ans expérience sur un poste similaire au sein d’une startup/scaleup avec une forte orientation produit
- Expérience solide sur les langages de programmation SAS, SPSS, Python, SQL, Pyspark
- Bonne maîtrise des modèles d’apprentissage automatique
- Maîtrise d’un cloud public (AWS, GCP ou Azure)
- Vous êtes autonome, bon communicant et aimez le travail d’équipe
POUR POSTULER
Merci de joindre votre cv à jour et nous reviendrons vers vous rapidement.
To Apply for this Job Click Here
AI Engineer
Stoke-on-Trent
£65000 - £70000
+ Data Science & AI
PermanentStoke-on-Trent, Staffordshire
To Apply for this Job Click Here
AI ENGINEER
£70,000 + BENEFITS
PRIMARILY REMOTE
Make a real-world impact in an industry that needs smarter, more sustainable solutions. Join a fast-growing SaaS company on the cutting edge of Generative AI and document intelligence.
THE COMPANY:
I’m working with tech company that’s making a real impact in ESG, supply chain risk, and sustainability. This client is looking for a hands-on AI Engineer with AI/ML tooling experience to help build and prototype LLM-powered workflows.
THE ROLE:
This client are hiring an AI Engineer to:
- Prototype and build GenAI tools for LLM-driven document reasoning
- Develop microservices and APIs (FastAPI, Kubernetes) with solid CI/CD practices
- Work on multimodal datasets: documents, images, structured content
- Collaborate cross-functionally with product and data teams
- Influence the direction of emerging AI tools
YOUR SKILLS AND EXPERIENCE:
A successful AI Engineer will have the following skills and experience:
- Strong Python with AI/ML exposure
- Experience with LLMs, RAG pipelines, document extraction
- Prior work with multimodal data (NLP, CV, tabular)
THE BENEFITS:
You will receive a salary, dependent on experience. Salary is up to £70,000 On top of the salary there are some fantastic extra benefits.
HOW TO APPLY
Please register your interest by sending your CV to Molly Bird via the apply link on this page.
To Apply for this Job Click Here
Senior Marketing Scientist
London
£50000 - £65000
+ Advanced Analytics & Marketing Insights
PermanentLondon
To Apply for this Job Click Here
SENIOR MARKETING SCIENTIST
£50,000 – £65,000
LONDON – 3X A WEEK
*Please note, this company is unable to sponsor, and you must be a UK resident to apply*
THE COMPANY
This boutique premium performance marketing agency is a super data-driven organisation, currently going through a growth phase and are expanding its marketing science team.
THE ROLE
This client is looking for a data-driven professional with expertise in Modelling, Data Science, and Data Visualisation to join our team. The role involves developing advanced models including LTV, propensity, attribution, and MMM to support business growth and media strategies. You’ll translate complex data into actionable insights through clear, practical outputs that inform key decisions. Additionally, you’ll design impactful BI dashboards, define effective reporting strategies for stakeholders, and ensure analytics tools like GA4 and Adobe Analytics are configured to capture meaningful data.
SKILLS + EXPERIENCE
- Strong Python experience for modelling is a must
- Experience in 2 out of the 3: propensity modelling, attribution modelling and MMM (Market mix modelling)
- Ideally you will come from an agency background
HOW TO APPLY
If this sounds like the role for you, swiftly send over your CV to Izzi at Harnham by using the link below.
To Apply for this Job Click Here
Lead Analyst
City of London
£60000 - £90000
+ Advanced Analytics & Marketing Insights
PermanentCity of London, London
To Apply for this Job Click Here
LEAD ANALYST – SUPPLY & OPERATIONS
£60,000-90,000 + BONUS + BENEFITS
LONDON – HYBRID (2 DAYS IN OFFICE)
THE COMPANY
This is a brilliant opportunity to join a purpose-led organisation with a sustainability mission at its core. This business has grown rapidly over the past two decades and operates across multiple regions, offering innovative services in e-commerce, resale, and tech solutions. They’re known for using data to power their operations, pricing, and product range – all while driving a positive environmental and social impact.
THE ROLE
As a Lead Analyst, you’ll take a hands-on and strategic role in shaping analytics across the Supply and Operations side of the business. Reporting into the Director of Analytics, you’ll manage a small team and drive key initiatives that directly impact commercial performance and operational efficiency.
In this role, you will:
- Own analytics across key business areas – leading reporting, metric development, and in-depth performance analysis
- Translate complex data into clear recommendations for senior stakeholders
- Build, validate and automate datasets for scalable reporting and insight generation
- Lead strategic analysis into inventory coverage, cost savings, and operational improvements
- Collaborate cross-functionally with Product, Tech and business teams
- Champion analytical best practices and develop the capability of the wider analytics community
- Line manage and mentor at least one analyst, with broader influence across the team
YOUR SKILLS AND EXPERIENCE
The ideal Lead Analyst will have:
- 8+ years in analytics with a strong background in supply chain, operations or e-commerce/marketplace settings
- Excellent SQL skills and experience working in cloud environments (GCP preferred)
- Proficiency in a BI tool such as Tableau, Power BI or Looker
- Experience with Python or R (Vertex AI exposure a plus)
- A strong analytical toolkit including root cause analysis, segmentation, cohort analysis, funnel optimisation, LTV forecasting, and experiment design (A/B, multivariate, incrementality)
- Solid stakeholder management and a track record of turning data into business impact
- Previous experience leading others or mentoring within a data team
- Ability to work in ambiguity and shift focus with evolving priorities
BENEFITS
In return, you’ll receive a salary between £70,000 and £90,000 depending on experience, plus a bonus and a comprehensive benefits package. You’ll work in a business that puts sustainability and innovation first, in a hybrid model with 2 days per week in a central London office.
HOW TO APPLY
Please register your interest by sending your CV to Dylan Butcher via the Apply link on this page.
To Apply for this Job Click Here
Data Scientist (Risk)
Liverpool
£65000 - £70000
+ Data Science & AI
PermanentLiverpool, Merseyside
To Apply for this Job Click Here
RISK DATA SCIENTIST (ESG & Supply Chain)
£70,000 + BENEFITS
PRIMARILY REMOTE
Make a real-world impact in an industry that needs smarter, more sustainable solutions. This role would suit someone who enjoys end-to-end ownership, communicating with non-technical stakeholders, and building models from scratch using Python and SQL.
THE COMPANY:
I’m working with construction tech company that’s making a real impact in ESG, supply chain risk, and sustainability. This is a hands-on, high-impact role where you’d work closely with a small, collaborative product team-shaping how financial, ESG, and supply chain data is turned into actionable insights.
THE ROLE:
This client are hiring a Risk Data Scientist to take full ownership of modelling efforts across their core risk platform.
A Data Scientist (Risk) will need to:
- Take end-to-end ownership of risk modelling across financial, ESG, and supply chain data
- Design and implement models from scratch using Python and SQL
- Collaborate closely with the cross-functional product team
- Contribute to GenAI-powered reporting tools
YOUR SKILLS AND EXPERIENCE:
A successful Data Scientist will have the following skills and experience:
- Solid experience in risk modelling
- Strong Python and SQL skills
- A solid foundation in Statistics and ML.
- Experience with end to end product ownership
THE BENEFITS:
You will receive a salary, dependent on experience. Salary is up to £70,000 On top of the salary there are some fantastic extra benefits.
HOW TO APPLY
Please register your interest by sending your CV to Molly Bird via the apply link on this page.
To Apply for this Job Click Here
Loyalty Manager
London
£300 - £300
+ Digital Analytics
ContractLondon
To Apply for this Job Click Here
We’re hiring on behalf of a global beauty brand for an exciting 12-month contract role as a Loyalty Manager. This is your chance to shape a cutting-edge loyalty proof of concept for the European market, working with a world-renowned name in the industry.
What You’ll Be Doing:
-
Lead the development of a loyalty program proof of concept tailored to European consumers
-
Collaborate with cross-functional teams across retail, marketing, and customer experience
-
Use insights to design and optimise strategies for customer retention and engagement
-
Report to senior stakeholders and shape the loyalty roadmap from scratch
✅ What We’re Looking For:
-
Strong experience in loyalty strategy and execution
-
Proven track record in retail, aviation, or supermarket loyalty programs (highly desirable)
-
Ability to build from zero and operate in a fast-paced, agile environment
-
Excellent stakeholder management and communication skills
Please reach out to Grace McCrudden at Harnham for more info
To Apply for this Job Click Here
Principal Data Engineer
London
£95000 - £107000
+ Data Engineering
PermanentLondon
To Apply for this Job Click Here
PRINCIPAL DATA ENGINEER
LONDON
£107,000
THE COMPANY
This consumer-tech powerhouse brings together several market-leading ecommerce brands, serving over 10 million customers across Europe. Now in an exciting phase of growth and innovation, this company is investing heavily in its data platform-giving this role a direct impact on shaping the future of how data empowers product, marketing, and operations at scale.
THE ROLE
As a Principal Data Engineer, you will play a pivotal role in designing and building a world-class, self-serve data platform. You’ll be the technical owner within your team while collaborating across the wider data and ML landscape to drive architectural best practices, data quality, and scalability.
Specifically, you can expect to be involved in the following:
- Architecting and evolving data solutions primarily within Snowflake, alongside a modern
- Driving platform-level improvements with a focus on data usability, governance, and long-term sustainability
- Implementing robust engineering and software best practices across the data lifecycle
- Collaborating with Principal ML Engineers, Product Managers, and Engineering Directors to solve high-impact business problems
- Championing data platform evolution from fragmented legacy systems to streamlined, scalable infrastructure
SKILLS AND EXPERIENCE
The successful Principal Data Engineer will have the following skills and experience:
- 7+ years in data engineering, ideally within consumer-facing tech or B2C product companies
- Deep expertise in Snowflake, with strong hands-on experience in building scalable data warehousing solutions
- Proven ability to build self-serve data platforms and high-quality data assets
- Strong architectural acumen and software engineering fundamentals
- Experience driving adoption of data governance and improving data platform usage across internal teams
- stack including:
- Snowflake
- AWS
- DBT
- Airflow
- Python
- Kinesis
- Terraform
- CI/CD tools
BENEFITS
The successful Principal Data Engineer will receive the following benefits:
- Salary up to £107,000
- Hybrid working: 2 days per week in the London office
- 25 days holiday + bank holidays
- Enhanced parental leave policies
- Private medical insurance and life assurance
- Employee discounts across ecommerce brands
- Mental health and wellbeing support
- Learning and development budget
- Pension with company match
HOW TO APPLY
Please register your interest by sending your resume/CV to Joana Alves via the Apply link on this page.
To Apply for this Job Click Here
Data Scientist (forecasting)
Leeds
£65000 - £70000
+ Data Science & AI
PermanentLeeds, West Yorkshire
To Apply for this Job Click Here
DATA SCIENTIST (FORECASTING)
£70,000 + BENEFITS
PRIMARILY REMOTE
If you’re are a highly educated individual (MSc, PhD) looking to work on meaningful data science problems in a remote, research-led environment, this could be a great fit.
THE COMPANY:
I’m working on a fantastic opportunity with a fast-growing SaaS company that’s transforming how the hospitality sector approaches pricing and forecasting. The team is applying advanced ML techniques to solve real commercial problems-everything from demand forecasting to booking behaviour clustering and light NLP use cases.
THE ROLE:
You’d join a high-calibre team in a full-stack data science role where you’ll build and deploy models end-to-end, owning projects from experimentation to production. A Data Scientist (forecasting) will need to:
- Building and deploying ML models (Python, Pandas, GCP)
- Forecasting revenue
- Exploring clustering techniques
- Applying NLP to classify ancillary bookings
- Collaborating with a small, high-calibre team of PhD-level Data Scientists, Engineers, and wider product team
YOUR SKILLS AND EXPERIENCE:
A successful Data Scientist will have the following skills and experience:
- MSc or PhD level of education
- Strong Python skills and experience with Pandas
- Cloud experience e.g. GCP
- A solid foundation in Statistics and ML.
- Experience with forecasting
THE BENEFITS:
You will receive a salary, dependent on experience. Salary is up to £70,000 On top of the salary there are some fantastic extra benefits.
HOW TO APPLY
Please register your interest by sending your CV to Molly Bird via the apply link on this page.
To Apply for this Job Click Here
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