FIND YOUR NEXT DATA SCIENCE JOB
We help the best talent in the Data Science market find rewarding careers.
Harnham is the best company for data science jobs because we are a global leader in data science recruitment.
Our extensive network of data science employers, and clients, ensuring you find the perfect match for your skills.
We offer a range of data science jobs from entry-level to director-level and have an experienced team of recruiters who will help match you with the right employer.
Also, we provide excellent resources and advice for data science job seekers, helping you prepare for interviews, negotiate salaries, and more.
HOW WE
DO IT
We pride ourselves on keeping our pulse on trends across the Data Science industry.
Our dedicated Data Science consultants have immersed themselves fully in the market and are able to provide industry-leading advice. Whether you’re looking for your next Data Science Job, or to find a Data Scientist for your team, Harnham has a wealth of knowledge and will help you make the process as efficient as possible.
We pride ourselves on keeping our pulse on trends in the industry and offer educational programmes to help keep our candidate’s skills sharp.
WHAT SETS
US APART?
We place considerable emphasis on getting to know you, your motivations and your skills.
We do this to ensure we only introduce you to companies that suit you. By taking the time to listen to and explore our clients’ briefs, we soon know whether candidates fit their culture or not.
As a genuine specialist in Data Science recruitment, we have developed long-standing partnerships within the marketplace. These relationships allow us to provide our candidates with access to the best opportunities in the sector.
If you are looking for that next Data Science job and career step, let us help you find it.
As working from home becomes ever more common, you can now search Remote Data Science Jobs.
JOBS
LATEST DATA
SCIENCE JOBS
Harnham are a specialist Data Science recruitment business, specializing in finding you your next data science job!
Senior Data Scientist (Contract)
London
£500 - £600
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Senior Data Scientist (Contract)
3 Months Initial (possibility to extend)
Hybrid, London
£500 – £600 Per Day
Immediate Start
The Company
They are an early-stage AI organisation focused on developing advanced data products for a complex global industry. Their work combines machine learning, data modelling, and modern AI techniques to generate meaningful insights from rich, real-world datasets. With a strong technical culture and deep domain expertise, they are looking for an experienced contractor to help deliver critical data science capabilities at an important stage of growth.
The Role and Deliverables
- Profile, analyse, and explore complex industrial datasets to identify modelling opportunities and data quality considerations.
- Establish baseline approaches and define robust evaluation datasets, metrics, and validation frameworks.
- Build and deploy classification, matching, and inference models for production use.
- Measure model performance and produce detailed error analysis to support ongoing improvement.
- Apply LLMs in appropriate use cases such as extraction, constrained labelling, and code generation, supported by clear evaluation processes.
- Collaborate with domain experts to translate complex business challenges into practical machine learning solutions.
Your Skills & Experience
- Strong experience building and deploying machine learning models in production environments where accuracy and reliability are critical.
- Advanced Python skills, including hands-on use of pandas and scikit-learn.
- Strong statistical knowledge and the ability to design effective validation and evaluation methodologies.
- Experience assessing model performance, analysing errors, and communicating findings clearly.
- Capability to build or contribute to LLM-powered workflows with robust evaluation frameworks.
- Comfortable working independently and taking ownership of technical standards and delivery.
- Ability to work effectively with subject matter experts in unfamiliar domains.
How to Apply
If you’re a hands-on Senior Data Scientist looking for an impactful contract opportunity with a strong technical challenge, please apply with your latest CV for consideration.
To Apply for this Job Click Here
Senior Data Scientist
London
£70000 - £80000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Senior Data Scientist
£70,000-£80,000 + £5,000 Car Allowance + Bonus
London(Hybrid – 2x Days a Week in Office)
If you enjoy solving complex modelling problems, building innovative machine learning solutions, and working with alternative data to challenge traditional pricing strategies, this is an opportunity to join one of the UK’s strongest data science functions!
The Company
This leading UK financial services business has built one of the most mature data science capabilities in the industry, using advanced analytics and machine learning to drive commercial decision-making across millions of customers; with significant investment in technology, data and AI, the business continues to grow rapidly and is looking to expand its Alternative Pricing Product team with a Senior Data Scientist. You’ll join a highly collaborative environment where experimentation is encouraged and innovative modelling techniques are actively deployed into production!
The Role
Reporting into the Head of Pricing, you’ll join a specialist team responsible for developing next-generation pricing models that challenge conventional approaches. Working across large and complex datasets, you’ll build predictive machine learning models using alternative data sources to improve customer pricing and risk selection.
Projects include:
- Building innovative predictive machine learning models
- Developing pricing and customer selection models
- Exploring alternative data sources to improve pricing accuracy
- Geospatial and footprint modelling
- Residual and claims modelling
- Working with messy, high-volume datasets to uncover commercial insights
- Deploying models using Azure Machine Learning
- Mentoring junior team members and helping shape best practice across the team
This is an opportunity to influence products that impact millions of customers whilst working on genuinely novel modelling challenges.
Your Skills & Experience
- Experience building machine learning models
- Strong Python skills
- Experience developing predictive models within commercial environments
- Experience working with large, complex datasets
- Experience with cloud-based ML platforms (Azure ML preferred)
- The ability to communicate technical findings to non-technical stakeholders
- Experience mentoring or supporting more junior data scientists is advantageous
Experience within insurance or financial services would be beneficial, although candidates from other highly analytical industries are also encouraged to apply.
The Benefits
- £70,000-£80,000 salary
- £5,000 annual car allowance
- Bonus
How to Apply
To register your interest in this opportunity, please send your CV via the application link
To Apply for this Job Click Here
Senior Data Scientist (Pricing)
Leicester
£60000 - £100000
+ Data Science & AI
PermanentLeicester, Leicestershire
To Apply for this Job Click Here
I’m hiring a Senior Data Scientist to join a leading UK insurer’s Pricing & Data Science function, working on innovative machine learning solutions that directly influence risk assessment, pricing, fraud detection, and commercial performance.
This is a role for someone who enjoys taking models from problem definition through to deployment, working with modern ML techniques and real-world commercial challenges.
What you’ll be doing
- Build and deploy predictive models across pricing, claims, fraud, and risk analytics.
- Engineer new data assets and rating factors to improve pricing performance.
- Identify and leverage new data sources to drive business value.
- Partner with stakeholders across Pricing, Data Science, Analytics, and Engineering teams.
- Own ML projects end-to-end, including EDA, deployment, monitoring, and model refreshes.
What they’re looking for
– Proven experience delivering ML projects from concept to deployment.
– Strong Python and SQL skills.
– Experience with Azure ML, Git, and cloud-based analytics environments.
– Strong stakeholder engagement and commercial problem-solving capability.
– Passion for applying emerging ML techniques to real business problems.
Why join?
- Work in a highly respected pricing and analytics function.
- Bonus scheme + £5k car allowance.
- Private medical cover and strong benefits package.
- Opportunity to work on innovative modelling and pricing challenges at scale.
To Apply for this Job Click Here
Senior Data Scientist
London
£60000 - £75000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Senior Data Scientist
£60,000 – £75,000
London or Leicester (1 day a week in office)
This is an opportunity to join a highly regarded data science function where innovation sits at the centre of decision making. Working within a specialist pricing team, you will have the freedom to explore new data sources, develop cutting-edge machine learning models, and shape how customer risk is assessed across a large-scale digital business. If you enjoy solving complex problems and building impactful models from messy, high-volume datasets, this role offers both technical challenge and visibility.
THE COMPANY
They are a market-leading digital organisation with a strong reputation for using data and analytics to drive business performance. Having invested heavily in their data science capabilities, they continue to expand a high-performing analytics community that values curiosity, experimentation, and collaboration.
THE ROLE
As a Senior Data Scientist you will join a specialist team focused on developing innovative approaches to customer risk assessment and pricing.
Specifically, you can expect to be involved in the following:
- Building and deploying predictive machine learning models that improve pricing and customer selection strategies
- Exploring and evaluating new data sources to identify commercial opportunities
- Developing geospatial and footprint models using alternative datasets
- Creating residual and claims-related models to improve business performance
- Working with large, complex, and often unstructured datasets
- Taking ownership of projects from problem definition through to delivery
- Mentoring and supporting junior team members
SKILLS AND EXPERIENCE
The successful Senior Data Scientist will have the following skills and experience:
- Strong commercial experience delivering machine learning and predictive modelling projects
- Advanced Python and SQL skills
- Experience working with large and complex datasets
- Knowledge of machine learning techniques such as XGBoost, CatBoost, or related models
- Experience working in cloud-based environments, ideally Azure
- Strong stakeholder management and communication skills
- Ability to translate business challenges into analytical solutions
- Experience within insurance is valuable but not essential
BENEFITS
The successful Senior Data Scientist will receive the following benefits:
- Salary between £60,000 – £75,000 – depending on experience
- £5000 annual car allowance
- Performance bonus scheme with on-target bonus and enhanced earning potential
- 10% matched pension contribution
- 27 days annual leave plus bank holidays
- Private medical insurance
- And other benefits
HOW TO APPLY
Please register your interest by sending your resume to Majid Latif via the Apply link on this page.
To Apply for this Job Click Here
Senior Data Scientist
Bexhill-On-Sea
£60000 - £75000
+ Data Science & AI
PermanentBexhill-On-Sea, East Sussex
To Apply for this Job Click Here
Senior Data Scientist
£60,000 – £75,000
London, Leicester or Bexhill (1 day a week in office)
This is an opportunity to join a highly regarded data science function where innovation sits at the centre of decision making. Working within a specialist pricing team, you will have the freedom to explore new data sources, develop cutting-edge machine learning models, and shape how customer risk is assessed across a large-scale digital business. If you enjoy solving complex problems and building impactful models from messy, high-volume datasets, this role offers both technical challenge and visibility.
THE COMPANY
They are a market-leading digital organisation with a strong reputation for using data and analytics to drive business performance. Having invested heavily in their data science capabilities, they continue to expand a high-performing analytics community that values curiosity, experimentation, and collaboration.
THE ROLE
As a Senior Data Scientist you will join a specialist team focused on developing innovative approaches to customer risk assessment and pricing.
Specifically, you can expect to be involved in the following:
- Building and deploying predictive machine learning models that improve pricing and customer selection strategies
- Exploring and evaluating new data sources to identify commercial opportunities
- Developing geospatial and footprint models using alternative datasets
- Creating residual and claims-related models to improve business performance
- Working with large, complex, and often unstructured datasets
- Taking ownership of projects from problem definition through to delivery
- Mentoring and supporting junior team members
SKILLS AND EXPERIENCE
The successful Senior Data Scientist will have the following skills and experience:
- Strong commercial experience delivering machine learning and predictive modelling projects
- Advanced Python and SQL skills
- Experience working with large and complex datasets
- Knowledge of machine learning techniques such as XGBoost, CatBoost, or related models
- Experience working in cloud-based environments, ideally Azure
- Strong stakeholder management and communication skills
- Ability to translate business challenges into analytical solutions
- Experience within insurance is valuable but not essential
BENEFITS
The successful Senior Data Scientist will receive the following benefits:
- Salary between £60,000 – £75,000 – depending on experience
- £5000 annual car allowance
- Performance bonus scheme with on-target bonus and enhanced earning potential
- 10% matched pension contribution
- 27 days annual leave plus bank holidays
- Private medical insurance
- And other benefits
HOW TO APPLY
Please register your interest by sending your resume to Majid Latif via the Apply link on this page.
To Apply for this Job Click Here
Senior Data Scientist
London
£550 - £600
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Senior Data Scientist
London | Hybrid (2-3 days per week) | 6-Month Contract | £550-£600 per day | Outside IR35
This is an exciting opportunity for a Data Scientist to join a leading retail organisation on a high-profile data transformation programme. You will work on projects that directly influence customer experience, commercial performance, and operational efficiency, using advanced analytics and machine learning to drive business outcomes.
The Company
They are a well-established retail business undergoing significant investment in their data and analytics capabilities. With a strong focus on leveraging data to improve decision-making, they are building scalable solutions that support both customer and commercial objectives. You will join a collaborative environment where data plays a central role in shaping strategy and performance.
The Role and Deliverables
- Develop and implement machine learning models to address key business challenges.
- Analyse large and complex datasets to uncover actionable insights.
- Work closely with stakeholders across the business to understand requirements and deliver analytical solutions.
- Build predictive models focused on customer behaviour, demand forecasting, and performance optimisation.
- Present findings and recommendations to technical and non-technical audiences.
- Support the development of best practices across data science, experimentation, and model deployment.
Your Skills & Experience
- Strong experience developing and deploying machine learning models in a commercial environment.
- Advanced Python skills and experience with common data science libraries.
- Experience working with large datasets and cloud-based data platforms.
- Strong understanding of statistical modelling, predictive analytics, and experimentation.
- Ability to communicate complex analytical findings clearly to stakeholders.
- Experience within retail, eCommerce, or consumer-focused businesses is advantageous.
- Strong stakeholder management and problem-solving skills.
How to Apply
If you are a Data Scientist seeking your next contract opportunity in London and are interested in delivering impactful projects within a retail environment, please apply with your latest CV.
To Apply for this Job Click Here
Senior Data Scientist
London
£600 - £700
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Senior Data Scientist
London | Outside IR35 £600-700 per day | 6 month initial contract | hybrid 3 days
This is a fantastic opportunity for a Senior Data Scientist to join a rapidly growing health technology business on a high-impact contract. You’ll work on data science initiatives that help drive better outcomes, influence product development, and support innovation across the organisation.
The Company
They are a fast-scaling health technology company focused on using data and analytics to improve decision-making and deliver meaningful outcomes. With continued growth and investment, they are expanding their data capabilities and looking for experienced professionals to help shape the next phase of their journey. You’ll join a collaborative team working on complex challenges within a purpose-driven environment.
The Role and Deliverables
- Develop and deploy advanced predictive and statistical models to address key business challenges.
- Analyse large, complex datasets to generate actionable insights.
- Work closely with product, engineering, and business stakeholders to translate requirements into data science solutions.
- Communicate findings and recommendations to both technical and non-technical audiences.
- Support the development of scalable analytics and machine learning workflows.
- Contribute to best practices across data science, experimentation, and model governance.
Your Skills & Experience
- Strong experience delivering end-to-end data science projects in commercial environments.
- Advanced Python and SQL skills for analytics and modelling.
- Experience building and deploying machine learning models.
- Strong understanding of statistical analysis, experimentation, and predictive modelling.
- Experience working with cloud platforms such as AWS, Azure, or GCP.
- Excellent stakeholder management and communication skills.
How to Apply
If you’re a Senior Data Scientist looking for a contract opportunity where you can make a measurable impact within a growing health technology business, apply today to learn more.
To Apply for this Job Click Here
Staff GTM Data Scientist
$190000 - $220000
+ Data Science & AI
PermanentCalifornia
To Apply for this Job Click Here
Staff GTM Data Scientist
Location: Remote
Salary: $190-220k base
We’re partnering with a fast-growing SaaS company to find a Staff Data Scientist for a senior, high-visibility role sitting at the heart of their product and go-to-market strategy. This isn’t a reporting role or a dashboard-builder position. It’s for someone who can drive a genuine shift toward data-driven decision making across the organization, and who has the technical depth and communication skills to bring leadership along with them.
What You’ll Be Doing
- Owning and advancing the company’s experimentation roadmap, focusing on high-leverage questions around customer workflows, churn risk, and long-term value
- Designing and analyzing complex A/B tests, multivariate experiments, and Bayesian methods to assess the real impact of product and business changes
- Applying causal inference techniques (DiD, synthetic control, propensity score matching, instrumental variables) where traditional RCTs aren’t feasible
- Building and governing a unified KPI framework that connects product health metrics to business outcomes
- Partnering with Data Engineering to build scalable, self-serve experimentation tooling and reusable analytical frameworks
- Translating complex statistical findings into clear, compelling narratives for VP and C-suite audiences
- Mentoring and training junior and mid-level data scientists on experimental design and causal modeling
What We’re Looking For
This is a senior individual contributor role reporting to the Director of GTM Data, acting as a strategic thought partner across Product, Marketing, Finance, and Engineering. The company is at an inflection point in how it uses data, and this person will be central to shaping that.
Essential:
- 6+ years in applied data science, economics, or product analytics
- Proven expertise in causal inference: DiD, PSM, instrumental variables, quasi-experimentation
- Deep experience in A/B testing methodology including sequential testing, CUPED, variance reduction, and network effects
- Advanced SQL and Python or R for statistical modeling
- Experience with Snowflake or similar cloud data warehouses
- Exceptional communication skills, comfortable presenting to and influencing C-suite stakeholders
- Demonstrated ability to drive change in organizations where experimentation culture is still maturing
Nice to have:
- Experience with dbt, Airflow, or Databricks
- Background in SaaS and product data science
To Apply for this Job Click Here
Staff Product Data Scientist
$190000 - $220000
+ Data Science & AI
PermanentCalifornia
To Apply for this Job Click Here
Staff Data Scientist (Product)
Location: Remote
Salary: $190-220k
We’re partnering with a fast-growing SaaS company to find a Staff Data Scientist for a senior, high-visibility role embedded in their product organization. This is for someone who combines deep statistical expertise with the ability to influence how an entire company makes decisions – not just someone who runs experiments, but someone who builds the culture and infrastructure around them.
What You’ll Be Doing
- Owning and advancing the company’s experimentation roadmap, focused on high-leverage product questions around customer workflows, churn risk, and long-term value
- Designing and analyzing complex A/B tests, multivariate experiments, and Bayesian methods to measure the real impact of product changes
- Applying causal inference techniques (DiD, synthetic control, propensity score matching, instrumental variables) where traditional RCTs aren’t feasible
- Building and governing a unified KPI framework that connects product health metrics to meaningful business outcomes
- Partnering with Data Engineering to build scalable, self-serve experimentation tooling and reusable analytical frameworks
- Translating complex statistical findings into clear, compelling narratives for VP and C-suite audiences
- Mentoring and training junior and mid-level data scientists on experimental design and causal modeling
What We’re Looking For
This is a senior individual contributor role reporting to the Director of Product Data, acting as a strategic thought partner across Product, Engineering, Finance, Design, and Product Marketing. The company is at an inflection point in how it uses data to make product decisions, and this person will be central to shaping that.
Essential:
- 6+ years in applied data science, economics, or product analytics
- Proven expertise in causal inference: DiD, PSM, instrumental variables, quasi-experimentation
- Deep experience in A/B testing methodology including sequential testing, CUPED, variance reduction, and network effects
- Advanced SQL and Python or R for statistical modeling
- Experience with Snowflake or similar cloud data warehouses
- Exceptional communication skills, comfortable presenting to and influencing C-suite stakeholders
- Demonstrated ability to drive change in organizations where experimentation culture is still developing
Nice to have:
- Experience with dbt, Airflow, or Databricks
- Background in SaaS and product data science
To Apply for this Job Click Here
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News & Blog
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Candidate – Digital Media and Analytics
I've recently got a short-term contract role through Harnham, and things couldn't have gone better! My recruiter was incredibly helpful throughout the entire process. They also provided incredible admin support so that I could focus on the actual job in hand, rather than having to spend too much time dealing with these matters.
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Candidate – Chief Data Officer
It was a real treat to work with Harnham. My recruiter consistently went above and beyond to ensure that I navigated through the recruitment process as smooth as possible. I had been in contact with other professional at Harnham in the past and I can attest that the level of professionalism is always top-notch.
Candidate /
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Client – Director of Customer Data Science – Apparel
The team at Harnham have been outstanding in helping our company build a market-leading data science team. Harnham’s communication is great, and the recruiter’s take a consultative approach that’s really focused on provided value for both their clients and their candidates. They provide strong candidates that help us fill our roles with high achievers who are also a great fit for our culture.
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Client – Director of People Operations
We’ve been collaborating with Harnham to recruit some key positions for our company, and they have been incredible partners. They team has been great and efficient. They understood our needs perfectly and provided us very talented candidates. We'll keep collaborating with them in the future. Thank you for your excellent job!
Client /
Director of People Operations
Candidate – Senior Data Engineer
I've been a Senior Data Engineer for about 4-5 years and Harnham is one of the best recruitment agencies I worked with. There was a time when my offer fell through and the recruiter I was working with at Harnham jumped in to the rescue and scheduled interviews for me within a couple of days. Really good agency and some great people.
Candidate /
Senior Data Engineer
Candidate – Market Research Analyst
Thanks to Harnham, I am now in a role that suits me. My recruiter was able to quickly identify the skills I had to offer and match me up with his client. It was a win-win for everyone. I was given great advice throughout the process, and I also appreciated the follow-ups that I received.
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I’ve had a great experience with Harnham. The recruiter provided great advice and ensured that I understood everything, and even followed up with me after I started my new role to see how I was settling in. I would recommend Harnham as a great recruitment company for anyone looking for a role in data and analytics.
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Client – Data Direction – Broadcast Media
I have worked with Harnham for over 2 years now as our main Analytics Recruiter partner and I am very pleased with the overall service and the people we have hired via Harnham. Harnham’s team is very good at understanding our recruitment needs and always come back with relevant and well scanned CVs, which saves me precious time.
