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.
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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.
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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 ML Engineer
Boston
$160000 - $190000
+ Data Science & AI
PermanentBoston, Massachusetts
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Senior Machine Learning Engineer
Remote (US) | Up to $190,000 Base + Benefits
A rapidly growing healthcare technology company is hiring multiple Senior Machine Learning Engineer to help build and scale machine learning products that directly improve patient access to clinical research and healthcare innovation.
This is a highly visible opportunity for someone who wants to own machine learning models from development through deployment and monitoring while partnering closely with Product, Engineering, and business stakeholders. The team is investing heavily in data science as a core strategic function and is looking for individuals who enjoy solving complex real-world problems through predictive modeling and statistical rigor.
What You’ll Be Working On
- Building predictive models that influence healthcare decision-making
- Developing patient matching and recommendation systems
- Forecasting enrollment and engagement outcomes
- Designing and evaluating machine learning experiments
- Monitoring and improving production model performance
- Partnering with engineering teams to productionize solutions
- Influencing product strategy through data-driven insights
What We’re Looking For
- 5+ years of ML experience
- Strong Python and SQL skills
- Experience building and deploying predictive models
- Statistical modeling expertise
- Machine learning production experience
- Strong experimentation and analytical thinking skills
- Ability to communicate complex findings to non-technical stakeholders
Preferred Experience
- Healthcare, life sciences, pharma, insurance, or other regulated industries
- Forecasting, Bayesian methods, or advanced statistical modeling
- Experience monitoring and improving production models
- Startup or high-growth environment experience
Why This Role?
- Fully remote opportunity
- Up to $190,000 base salary
- Meaningful healthcare impact
- Strong leadership visibility
- Opportunity to influence product direction
- End-to-end ownership of machine learning initiatives
- Join a business that has proven product-market fit and is investing heavily in growth
If you’re a Machne Learning Engineer who enjoys building models that make it into production and drive measurable business outcomes, we’d love to hear from you.
Apply today or reach out directly for a confidential discussion.

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Lead Data Scientist
Phoenix, AZ
$140000 - $150000
+ Data Science & AI
PermanentPhoenix, Arizona
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LEAD DATA SCIENTIST – CREDIT RISK & ADVANCED ANALYTICS
TEMPE, AZ (HYBRID)
$140,000 – $150,000 BASE + ANNUAL BONUS
The Opportunity Join a high-impact Analytics team focused on solving complex business challenges through advanced data science, predictive modeling, and risk analytics.
This is a highly visible leadership role where you’ll partner directly with executives and cross-functional stakeholders to influence key business decisions, improve customer outcomes, and drive measurable financial impact.
You’ll own projects from concept through implementation, applying machine learning, statistical modeling, and business insight to deliver solutions that make a real difference.
What You’ll Do
- Lead analytical initiatives from problem definition through implementation and measurement
- Develop predictive models to support business strategy, financial forecasting, and risk assessment initiatives
- Leverage machine learning techniques such as gradient boosting, random forests, clustering, and segmentation to generate actionable insights
- Identify trends, quantify opportunities, and uncover root causes within large and complex datasets
- Collaborate with senior stakeholders to translate business challenges into analytical solutions
- Present findings and recommendations to leadership through compelling data storytelling and executive presentations
- Guide and mentor less experienced team members on project execution and analytical methodologies
- Build scalable processes and analytical frameworks that improve business performance over time
What We’re Looking For
- 8+ years of experience in data science, quantitative analytics, predictive modeling, or risk analytics
- Experience applying statistical and machine learning techniques to real-world business problems
- Advanced Python and SQL skills with experience working across large, complex datasets
- Strong understanding of predictive modeling, segmentation, experimentation, and statistical analysis
- Proven track record of influencing business decisions through data-driven recommendations
- Excellent communication skills with the ability to explain complex concepts to executive audiences
- Experience leading initiatives independently with minimal direction
- Bachelor’s degree in a quantitative field such as Mathematics, Statistics, Economics, Engineering, or a related discipline
Nice to Have
- Master’s degree in a quantitative discipline
- Experience within financial services, consumer lending, real estate, healthcare, or other regulated industries
- Background in risk management, portfolio analytics, or credit-related modeling
- Exposure to model validation, governance, audit, or regulatory review processes
- Knowledge of cloud-based data environments including AWS and Snowflake
- Experience utilizing bureau data, scorecards, or advanced forecasting methodologies
Why This Role
- High-visibility role with regular interaction with executive leadership
- Opportunity to drive business outcomes through production-ready analytics and machine learning
- Strong autonomy and ownership over projects and strategy
- Work on initiatives with measurable multi-million-dollar business impact
- Mentor and influence without direct people-management responsibilities
- Collaborative, supportive culture that values innovation, curiosity, and continuous improvement
- Opportunity to see your models implemented and your work recognized across the organization
If you’re a data science leader who enjoys solving complex business problems, influencing executive decisions, and building predictive models that drive real-world results, we’d love to connect.

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Data Scientist
London
£400 - £400
+ Data Science & AI
ContractLondon
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Data Scientist
London | £400 Outside IR35
This is an exciting opportunity to join a growing SaaS business on a high-impact contract, helping to shape and deliver advanced pricing optimisation capabilities for the hospitality sector. You will work on innovative projects that directly influence customer decision-making, combining data science, machine learning, and commercial strategy in a fast-paced environment.
The Company
They are a technology business developing data-driven solutions that help organisations manage, distribute, and optimise critical business information. Their platform enables customers to centralise and maintain accurate data across multiple channels in real time. As they continue to expand their pricing and optimisation capabilities, they are looking for an experienced Pricing Data Scientist to support the development of innovative solutions for their customers.
The Role and Deliverables
- Design, develop, implement, and maintain pricing optimisation and modelling algorithms.
- Build predictive models focused on customer behaviour, demand forecasting, and price elasticity.
- Develop data-driven pricing strategies and recommendations for customers.
- Partner with Product, Engineering, Sales, and Customer Success teams to ensure successful delivery of pricing solutions.
- Integrate optimisation models into production environments and continuously improve performance based on real-world outcomes.
- Support customer experimentation through A/B testing and scenario modelling, while communicating insights to stakeholders in a clear and actionable way.
Your Skills & Experience
- Strong experience designing and implementing large-scale pricing optimisation systems.
- Strong programming capability in Python or R.
- Expertise in data analysis, manipulation, and statistical modelling techniques.
- Experience with machine learning frameworks, optimisation methods, and time series forecasting.
- Strong understanding of pricing strategy, demand modelling, and elasticity concepts.
- Ability to translate complex technical findings into clear business recommendations.
- Experience working within SaaS, technology, or e-commerce environments.
- Familiarity with AWS and deploying analytical solutions into production.
- Excellent problem-solving skills and a collaborative approach to working with stakeholders.
How to Apply
If you are an experienced Pricing Data Scientist looking for a challenging contract opportunity where you can make a tangible impact, please apply with your latest CV for further details.

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Data Scientist
London
£400 - £450
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Data Scientist
London | Outside IR35
£400 per day
This is an exciting opportunity for a Data Scientist to join a growing SaaS business on a high-impact pricing optimisation project. You’ll play a key role in developing advanced pricing models that help hospitality businesses make smarter commercial decisions, maximise revenue, and improve performance through data-driven insights. This initial 6-month contract offers the chance to work on a product that directly influences customer growth and commercial success.
The Company
They are a technology-driven SaaS organisation that helps businesses centralise and manage operational, product, pricing, and sales data within a single platform. Their solution enables customers to access real-time insights across multiple channels and touchpoints, supporting more effective decision-making. Backed by a well-established technology group, they continue to invest heavily in data science and product innovation. Their platform serves a broad customer base across the hospitality sector.
The Role and Deliverables
- Develop and implement advanced pricing models and optimisation algorithms to maximise customer revenue.
- Build predictive models to forecast customer behaviour, demand patterns, and price elasticity.
- Partner with product, engineering, sales, and customer success teams to deliver pricing strategies that create measurable business value.
- Work with engineering teams to deploy pricing algorithms into production systems.
- Monitor model performance using real-world outcomes and continuously refine solutions to improve effectiveness.
- Enable customers to conduct A/B testing and scenario modelling, providing clear recommendations based on data-driven insights.
Your Skills & Experience
- Strong experience designing and implementing large-scale pricing optimisation solutions.
- Advanced programming skills in Python and/or R.
- Strong capabilities in data manipulation, statistical modelling, and analytical problem solving.
- Experience applying machine learning frameworks and optimisation techniques to commercial challenges.
- Strong understanding of pricing strategy, demand modelling, elasticity analysis, and time series forecasting.
- Ability to communicate complex technical concepts and recommendations to non-technical stakeholders.
- Experience working within SaaS and/or e-commerce environments.
- Familiarity with AWS and cloud-based data science workflows.
- Strong stakeholder management and customer-facing communication skills.
- Demonstrated ability to improve model performance through continuous monitoring and optimisation.
How to Apply
If you’re a Data Scientist with strong pricing optimisation experience and are looking to deliver meaningful impact on a business-critical project, apply today to find out more.

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Staff Finance Data Scientist – Consumption Forecasting
San Francisco
$240000 - $300000
+ Data Science & AI
PermanentSan Francisco, California
To Apply for this Job Click Here
Staff Data Scientist, Finance – Consumption Forecasting
Location: San Francisco or New York | Hybrid (3 days per week in office)
Salary: $240-300k base + bonus + equity (RSUs)
This is a rare chance to own forecasting infrastructure at the center of a high-growth, consumption-based developer platform, one that powers some of the world’s most dynamic applications and scales with every developer and enterprise building on it.
As a consumption-based business, forecasting usage across compute, bandwidth, edge, and storage isn’t a support function. It’s foundational to how we plan infrastructure, revenue, and long-term strategy. This role exists to lead that work at the highest level.
What you’ll own
This is a senior individual contributor role with organization-wide impact. You’ll define forecasting methodology, build systems that scale with a rapidly growing platform, and sit at the intersection of Finance, Infrastructure, Product, and GTM with direct visibility to executive leadership.
- Own production revenue forecasting end-to-end: model development, backtesting, deployment, monitoring, and iteration from first principles to live system
- Build forecasting systems that account for usage-based pricing dynamics, consumption patterns, and customer lifecycle across the platform, built for how this business actually works, not retrofitted SaaS models
- Design hierarchical forecasting models across account, cohort, segment, and global aggregate levels, covering operational, quarterly, and long-range planning cycles
- Establish backtesting, monitoring, and explainability standards that make forecast accuracy transparent and defensible
- Build scenario simulation frameworks to evaluate pricing changes, packaging adjustments, and product launches
- Partner with Finance on board-level reporting, with Infrastructure Engineering on capacity planning, and with Product and GTM on adoption curves and usage drivers
- Set forecasting best practices across the broader Data organization
What we’re looking for
- 7+ years in data science, quantitative analytics, or applied statistics at senior or staff level
- Deep expertise in time-series forecasting and statistical modelling in a usage-based or SaaS environment
- Proven track record building and productionizing ML systems at scale
- Strong Python and SQL, with experience on large-scale usage and billing datasets
- Familiarity with probabilistic modelling, hierarchical forecasting, and causal inference
- Experience partnering with Finance or executive leadership on planning cycles
- Comfortable operating autonomously in fast-moving, ambiguous environments
Nice to have
- Background in cloud infrastructure, developer tools, or consumption-based revenue models
- Familiarity with modern data stacks: Snowflake, Delta Lake, dbt, Airflow
- Prior technical mentorship or informal leadership experience

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

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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
Senior Data Scientist
London
£600 - £700
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Senior Data Scientist
London | Outside IR35
Day Rate: £600-£700 per day
Contract Length: Initial 3-month contract
Working Pattern: Hybrid (1-2 days per week in London preferred), although remote working may be considered for the right profile
Start Date: ASAP
This is an exciting opportunity to join a cutting-edge organisation on a greenfield data science project. You’ll have the chance to work on complex real-world machine learning challenges, helping to build intelligent systems that drive meaningful business outcomes while operating with a high degree of autonomy.
The Company
They are a technology-focused organisation using data, machine learning, and AI to solve complex industrial and commercial challenges. Their team works across large-scale datasets, developing innovative solutions that support advanced classification, inference, and decision-making processes. The environment is highly collaborative, research-driven, and focused on delivering practical impact through data science. This contract offers the opportunity to influence both technical direction and best practices from the outset.
The Role and Deliverables
- Explore, profile, and analyse complex datasets to identify patterns and opportunities.
- Build baseline machine learning models and establish robust evaluation frameworks.
- Develop production-ready classification, matching, and inference models.
- Measure model performance using rigorous validation and testing methodologies.
- Conduct detailed error analysis and document model limitations and recommendations.
- Apply LLM-based approaches for extraction, constrained labelling, and code generation where appropriate.
Your Skills & Experience
- Strong experience delivering machine learning models into production environments.
- Advanced Python skills, including pandas and scikit-learn.
- Excellent understanding of model validation, statistical principles, and evaluation methodologies.
- Experience building and maintaining robust machine learning pipelines.
- Exposure to LLM-based workflows and evaluation frameworks.
- Comfortable working independently and helping establish best practices in evolving environments.
How to Apply
If you’re an experienced Senior Data Scientist looking for a high-impact contract opportunity, apply today to learn more.

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Senior Data Scientist
London
£100000 - £124000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Senior Data Scientist, Causal Inference & Experimentation
London | Up to £124,000 + Bonus
This is an opportunity to join a newly formed Data Science team focused on understanding what truly drives customer value and commercial performance. The role sits at the intersection of Data Science, Econometrics, and Experimentation, with a strong emphasis on explaining why behavioural changes happen rather than simply predicting outcomes.
The Company
They are a global technology and entertainment business investing heavily in advanced analytics to better understand customer behaviour and commercial performance. As part of a newly established function, they are building a specialist team focused on measuring the impact of product and commercial initiatives. The work combines Data Science, Economics, and Experimentation, with a strong emphasis on influencing real-world decisions.
The Role
- Apply causal inference techniques to measure the true impact of product and commercial initiatives
- Design and analyse experiments and A/B tests to drive decision-making
- Conduct cannibalisation, value decomposition, and counterfactual analysis
- Develop simulation and offline evaluation frameworks
- Assess models and experiments developed by other teams
- Translate complex findings into clear recommendations for technical and commercial stakeholders
Your Skills & Experience
- Strong background in Data Science, Econometrics, Economics, Statistics, Behavioural Science, or a related quantitative discipline
- Deep understanding of causal reasoning, experimentation, and statistical inference
- Experience with A/B testing, incrementality measurement, treatment effects, or causal modelling
- Strong Python and SQL skills
- Excellent communication skills with the ability to influence business decisions through data
- Master’s degree or PhD in Economics, Econometrics, Statistics, Mathematics, or a similar quantitative field strongly preferred
What They Offer
- Salary up to £124,000 plus bonus
- Opportunity to help shape a brand-new strategic Data Science function
- High-impact work influencing product and commercial decisions
- Strong career progression and development opportunities
- Flexible working and competitive benefits
How to Apply
If you have a strong background in causal inference, experimentation, and quantitative research, apply today to learn more about this opportunity.

To Apply for this Job Click Here
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