DATA
SCIENCE
JOBS &
CAREERS

Browse the latest Data Science Jobs and Data Scientist Jobs with Harnham, the global leader in finding Data and AI talent for their next data job.

DATA
SCIENCE
JOBS &
CAREERS

Browse the latest Data Science Jobs and Data Scientist Jobs with Harnham, the global leader in finding Data and Analytics talent for their next data job.

OVERVIEW

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

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?

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.

Harnham-IData-&-Technology
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

Pittsburgh

$150000 - $175000

+ Data Science & AI

Permanent
Pittsburgh, Pennsylvania

To Apply for this Job Click Here

Senior Data Scientist
Remote – Competitive Salary & Benefits – Travel 25% / per month across the world

This is a unique opportunity to apply advanced AI and data science in highly complex, mission‑critical environments. You will work directly on real‑world challenges, building scalable AI solutions that drive strategic decisions and high‑impact outcomes.

The Company
They specialise in developing AI‑enabled platforms that support sophisticated analytical and operational needs. Their teams work with diverse datasets, combining deep technical expertise with domain insight to deliver tools that influence major strategic decisions. They encourage creativity, rapid iteration, and innovation in applied AI.

The Role
* Develop AI, ML, and data science solutions for complex analytical problems.
* Build scalable AI platforms tailored to specific operational requirements.
* Lead full‑lifecycle AI project execution, from research to production deployment.
* Collaborate with research, engineering, and software teams to deliver robust systems.
* Introduce and champion new AI methodologies, including LLMs and agentic systems.
* Mentor team members and support a culture of technical excellence.
* Translate broad requirements into actionable technical plans.

Your Skills & Experience
* Strong commercial experience delivering production‑ready AI systems.
* Expertise in AI fundamentals, LLMs, and modern AI development workflows.
* Ability to define architectures, drive roadmaps, and oversee end‑to‑end delivery.
* Skilled in collaborating across engineering, research, and product functions.
* Strong communication skills for both technical and non‑technical audiences.

What They Offer
* Competitive salary, benefits, and flexible location options.
* Direct impact on high‑stakes challenges and strategic AI initiatives.
* Opportunities to drive innovation and shape emerging AI practices.

How to Apply
If you want to build AI solutions that make a tangible impact, apply now.

To Apply for this Job Click Here

Staff Product Data Scientist

San Francisco, CA

$180000 - $210000

+ Data Science & AI

Permanent
San Francisco, California

To Apply for this Job Click Here

STAFF DATA SCIENTIST, PRODUCT – EXPERIMENTATION & CAUSAL INFERENCE

$180K – $210K BASE

REMOTE – US (EST HOURS)

Are you excited about fixing broken experimentation culture and building a best-in-class testing and causal inference framework from the ground up?

Do you want to partner directly with product and executive leadership to shape how decisions are made across a fast-growing SaaS platform?

THE COMPANY

A high-growth, venture-backed B2B SaaS company powering mission-critical workflows for thousands of businesses globally.

  • Strong product-market fit with a rapidly expanding customer base
  • Backed by top-tier investors with a clear path toward IPO
  • Leadership team deeply invested in data-driven decision making
  • Increasing focus on experimentation, product analytics, and ML-driven insights

THE ROLE

As a Staff Data Scientist, you’ll act as the technical anchor for experimentation and causal inference, owning both the strategy and execution of how the company tests, learns, and makes product decisions.

  • Rebuild and scale the company’s experimentation framework (A/B, Bayesian, causal methods)
  • Own the experimentation roadmap and influence product and engineering leaders
  • Design and evaluate experiments across web and in-app experiences
  • Apply causal inference methods when randomized testing isn’t feasible
  • Partner with Product, Engineering, and Leadership to drive data-informed decisions
  • Train and mentor other data scientists on advanced statistical methods
  • Evaluate and implement experimentation tooling and best practices

YOUR SKILLS AND EXPERIENCE

  • 6+ years in data science or product analytics
  • Experimentation (A/B testing, Bayesian methods, sequential testing, multi-arm bandits)
  • Causal inference (DiD, propensity modeling, uplift modeling, etc.)
  • Strong product intuition within a SaaS environment:
  • Feature adoption, retention, churn, growth loops, user lifecycle
  • Advanced proficiency in Python and SQL
  • Comfortable in GitHub environments (PRs, code reviews, collaboration)

Nice to have:

  • Experience selecting or implementing experimentation platforms
  • Familiarity with modern AI tools (e.g., coding copilots, LLM-assisted workflows)

THE BENEFITS

  • Competitive base salary ($180K – $210K)
  • Fully remote (US, EST collaboration)
  • High-visibility role with direct access to executive leadership
  • Opportunity to define and scale experimentation culture company-wide
  • Work on complex product problems with real business impact

Why This Role

You won’t just run experiments – you’ll define how experimentation works across the company.

This is a rare opportunity to step into a role where the foundation exists but needs to be rebuilt – giving you the chance to shape the roadmap, influence leadership, and elevate the entire organization’s approach to data-driven decision making.

To Apply for this Job Click Here

Senior Data Scientist

London

£100000 - £120000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Senior Data Scientist
London (Hybrid, London) £100,000 to £120,000 + equity

This is a rare opportunity to join a fast-growing AI assurance business at a pivotal stage of its growth. You will play a critical role in shaping how high-stakes AI systems are evaluated, bringing statistical rigour and credibility to work that has real regulatory and legal impact. No sponsorship available.

The Company

They are an early-stage AI assurance organisation operating in a highly regulated and rapidly evolving market. Their work focuses on the independent evaluation of AI systems used in sensitive decision-making contexts, helping organisations demonstrate fairness, accountability, and compliance. With strong commercial traction and a predominantly US-based customer base, they are scaling quickly while maintaining a high bar for analytical quality.

The Role

As a Senior Data Scientist, you will take ownership of the analytical methodologies that underpin the evaluation of AI systems. This role is research-led and statistically focused, rather than centred on building production machine learning models.

Key responsibilities include:

  • Designing and running rigorous statistical tests to evaluate bias, fairness, and consistency in AI-driven systems
  • Defining defensible methodologies for scoring, ranking, and interpreting AI outputs
  • Building and validating synthetic datasets and test scenarios to assess system behaviour
  • Leading research-driven experimentation to explore correlations, behavioural variables, and edge cases
  • Setting quality and evidence thresholds for what constitutes statistically valid and defensible results
  • Working closely with founders, product, and technical teams on high-impact analytical questions

Your Skills & Experience

You will bring strong applied experience in statistical analysis and AI evaluation, with the confidence to make judgement calls in ambiguous, high-stakes environments.

Key requirements include:

  • Strong commercial experience in applied statistics and experimental design
  • Proven capability in bias and fairness evaluation for AI or algorithmic systems
  • Experience generating and validating synthetic data for testing or assurance purposes
  • Ability to critically assess methodology, limitations, and real-world implications of analytical outputs
  • Confidence communicating complex findings clearly to both technical and non-technical stakeholders
  • Python experience for statistical analysis and reproducible research workflows

A PhD or advanced academic background in a relevant field is advantageous, but not essential if you bring strong applied industry experience.

What They Offer

  • Salary of £100,000 to £120,000 plus meaningful equity
  • Hybrid working model with three days per week in a London office
  • High autonomy and influence in an early-stage, high-growth environment
  • The opportunity to shape industry standards in responsible and compliant AI
  • Clear progression as the data and analytics function scales

How to Apply

Apply below of this sounds like the perfect opportunity for you, or email me at

To Apply for this Job Click Here

Senior Data Scientist

London

£100000 - £101000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Senior Data Scientist
London (Hybrid) | £100,000 to £120,000 + equity

This is a rare opportunity to step into a high impact data science role where statistical rigour genuinely matters. You will work on the independent evaluation of AI systems used in real world, high stakes decision making, with outputs that influence regulatory, legal and commercial outcomes. If you are motivated by credibility, methodology and meaningful responsibility, this role stands out from typical data science positions.

The Company

They are an early stage AI assurance business operating at the intersection of data science, regulation and responsible AI. Their platform provides independent testing and validation of AI systems used by organisations deploying AI at scale. With strong commercial traction and a growing international customer base, they are building analytical standards that customers rely on for accountability and compliance.

The Role

You will play a central role in defining and delivering rigorous evaluations of AI systems, particularly around bias, fairness and consistency.
Key responsibilities include:

  • Designing and running robust statistical tests to assess bias and fairness in AI driven decision systems
  • Developing and validating synthetic datasets and testing scenarios under real world constraints
  • Creating defensible methodologies for scoring, ranking and interpreting AI outputs
  • Defining evidence thresholds and standards for what is statistically valid and publishable
  • Conducting research driven experimentation to test behavioural and outcome level correlations
  • Contributing to high stakes stakeholder discussions where analytical judgement and clarity are critical

Your Skills and Experience

They are looking for someone with strong applied analytical judgement rather than a pure modelling background.
You will bring:

  • Strong commercial experience in statistical testing, experimental design and inference
  • Hands on experience evaluating AI systems, models or algorithms, particularly in black box settings
  • Experience working with bias, fairness or discrimination analysis in applied contexts
  • Practical knowledge of synthetic data generation and dataset design
  • Confidence making and defending methodological decisions under uncertainty
  • Fluency in Python for statistical analysis and reproducible workflows
  • An interest in the real world, regulatory and ethical implications of data science work

A PhD or equivalent research background is beneficial but not required if you have strong applied experience.

What They Offer

  • Salary between £100,000 and £120,000 plus meaningful equity
  • 33 days holiday including bank holidays
  • Hybrid working with three days per week in a London office
  • Learning and development budget
  • High autonomy and the chance to shape analytical standards in a fast growing field

How to Apply
Apply now to discuss how your statistical and analytical expertise could shape the future of AI assurance.

To Apply for this Job Click Here

Lead Data Scientist

London

£100000 - £110000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Lead Data Scientist
London, hybrid (2-3 days in office) with some client travel expected
3-5 years experience
Competitive salary between £100,000 – £110,000 plus bonus

This is a standout opportunity to play a key role in building and shaping a growing data science and AI consulting capability. You will work on complex, high impact problems across public and private sector clients, applying data science, machine learning and generative AI to deliver measurable, real world outcomes. You will also contribute to developing people, standards and culture within a rapidly scaling team.

The Company

They are a specialist consultancy known for solving complex, high value problems and guaranteeing the impact of their work. Operating across consumer, public sector, defence and infrastructure, they focus on outcomes rather than theory, with solutions tied to clear KPIs, ROI and lasting change. Data science and AI are strategic growth areas, with strong senior backing and close collaboration with leading AI technology providers.

The Role

As a Lead Data Scientist, you will combine hands on technical delivery with consulting influence and team development. You will work closely with client partners and stakeholders to shape, deliver and embed data driven solutions that make a tangible difference.

Key responsibilities include:

  • Designing and delivering data science, machine learning and generative AI solutions to solve real business and operational problems.
  • Leading technical workstreams within larger client programmes, from problem definition through to deployment.
  • Applying advanced analytics and modelling techniques in practical, production ready ways.
  • Working on site with clients to embed solutions, drive adoption and ensure long term impact.
  • Translating complex analytical concepts into clear, actionable insights for non technical audiences.
  • Supporting client partners with technical input during solution design and proposal development.
  • Coaching and mentoring junior consultants, contributing to capability building across the team.
  • Helping define and promote best practice in data science and AI delivery.

Your Skills & Experience

  • Strong commercial experience delivering data science or machine learning solutions end to end.
  • A consulting mindset, with the ability to influence stakeholders and operate confidently in client environments.
  • Experience turning ambiguous problems into structured, high impact analytical solutions.
  • Exposure to areas such as machine learning, simulation or generative AI in real world settings.
  • A track record of delivering measurable outcomes such as efficiency gains, cost reduction or revenue impact.
  • Intellectual curiosity and a commitment to continuous learning.
  • A collaborative, low ego approach with the confidence to lead and support others.
  • Eligibility for security clearance is beneficial for some projects, but not essential for all roles.

What They Offer

  • A Lead level role with clear responsibility, visibility and room to grow.
  • Competitive salary with a performance related bonus.
  • Strong coaching, development and progression within a growing data science and AI practice.
  • Exposure to varied, meaningful work across multiple sectors.
  • A central London office alongside flexible working and regular client engagement.
  • The opportunity to help shape the future of a data science capability built around real impact.

How to Apply

Apply below of this sounds like the perfect opportunity for you, or email me at

To Apply for this Job Click Here

Product Director

London

£90000 - £110000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Product Director, Molecule Design Products
London, hybrid working | Competitive salary and benefits

If you are a product leader who thrives at the intersection of science, data, and AI, this role offers the chance to shape how modern drug discovery tools are built and scaled. You will lead a strategically critical product area, build a new UK based team, and influence how AI is embedded into real scientific workflows.

The Company
They are a global, research led organisation making significant investment in data and AI to transform how scientific research is conducted. Their enterprise scale platform brings together complex scientific data, advanced analytics, and AI to support discovery across R and D. The environment is highly collaborative, product driven, and focused on long term scientific impact rather than short term delivery.

The Role

  • You will define and own the product vision and roadmap for AI enabled molecule design products
  • You will build, hire, and lead a UK based product management team, creating the foundations for future growth
  • You will partner closely with scientists, engineers, and data teams to deliver products that improve drug design and optimisation
  • You will drive adoption of AI and data driven approaches across scientific decision making
  • You will operate as a senior product leader, influencing strategy during a period of organisational growth and change

Your Skills and Experience

  • Strong product management experience across technical or platform products
  • Exposure to AI, machine learning, or data intensive products in production environments
  • Experience working in scientific domains such as pharma, biotech, or drug discovery
  • Leadership capability through people management or senior individual contributor roles
  • Ability to translate complex scientific and technical challenges into clear product direction

What They Offer

  • Competitive salary and comprehensive benefits package
  • The opportunity to build and lead a new product function with immediate scope to hire
  • High visibility role with influence over both platform strategy and scientific outcomes
  • Clear progression within a data and AI organisation that is central to future R and D strategy

How to Apply
If you are looking to combine scientific impact with senior product leadership, apply to explore this opportunity further.

To Apply for this Job Click Here

Head of Data Science

London

£150000 - £170000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Head of Data Science
London | Hybrid working (2 to 3 days in office) | £150,000 to £170,000 base salary

This is a rare opportunity for you to take ownership of a large, highly influential data science function within a profitable, data driven organisation where modelling and AI directly shape commercial outcomes. You will have executive level visibility, genuine autonomy, and the chance to define how data science and AI are applied at scale.

The Company

They are a well established UK fintech operating in the SME lending space, with data science embedded at the core of their decision making. The business is profitable, growing, and known for applying rigorous probabilistic and statistical models in production environments. Data science is not an advisory function here; it directly underpins lending decisions, forecasting, and commercial strategy across the organisation.

The Role

  • You will lead a multi team data science function spanning credit, product, and operations
  • You will set the strategic direction for how data science delivers measurable commercial value
  • You will scale and optimise ways of working, standards, and tooling across teams
  • You will partner closely with senior stakeholders across engineering, product, and commercial functions
  • You will drive AI adoption and transformation, focusing on productivity, efficiency, and decision quality
  • You will oversee hiring, development, and progression of managers and senior individual contributors
  • You will contribute to modelling, architectural, and probabilistic machine learning strategy where needed

Your Skills & Experience

  • Strong experience leading and scaling data science teams, including managing managers and senior ICs
  • Clear examples of commercial impact delivered through data science or AI initiatives
  • Experience working with models in production and understanding trade offs between rigour, speed, and value
  • Ability to operate strategically while remaining technically credible at model and methodology level
  • Recent experience driving AI adoption or transformation, with evidence of value created
  • Strong stakeholder management and communication skills with senior decision makers
  • Academic background in a quantitative discipline such as statistics, mathematics, physics, or similar

What They Offer

  • Base salary of £150,000 to £170,000
  • Hybrid working with 2 to 3 days per week in the London office
  • A senior leadership role with high autonomy and strong executive sponsorship
  • The chance to shape how data science and AI are applied across a profitable, scaling business
  • A comprehensive benefits package and long term progression opportunities

How to Apply
If you are a senior data science leader looking to drive impact at scale in a commercially focused environment, please apply to learn more.

To Apply for this Job Click Here

Product Director

London

£90000 - £110000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Product Director, Molecule Design
London (Hybrid) | Competitive salary between £90,000 and £110,000 benefits package

This is a rare opportunity to take ownership of a strategically critical product area at the intersection of science, data and AI. You will build and lead a new UK-based product team, shaping AI enabled products that directly support drug discovery and scientific decision making at scale.

The Company

They are a global life sciences organisation investing heavily in a central data and AI platform designed to transform how scientific data is accessed, analysed and applied across R&D. The platform underpins AI and machine learning at enterprise scale and delivers real end user products for scientists, not just infrastructure. Molecule design is a core strategic pillar, central to accelerating discovery timelines and improving research productivity.

The Role

As Product Director for Molecule Design, you will define and lead the product vision, strategy and delivery for a portfolio of AI powered scientific products. You will play a key role in scaling the UK product organisation and shaping how AI is embedded into scientific workflows.

Key responsibilities include:

  • Setting the product vision and roadmap for molecule design tools and platforms.
  • Building, hiring and mentoring a high performing UK based product team.
  • Driving AI enabled product development across compound design, optimisation and evaluation.
  • Partnering closely with scientific, engineering and data teams to deliver impactful products.
  • Supporting organisational growth and restructuring by establishing clear product leadership.
  • Ensuring products integrate effectively with complex scientific and molecular datasets.

Your Skills & Experience

  • Strong experience leading technical or platform product teams.
  • A background in scientific environments such as pharma, biotech or drug discovery.
  • Exposure to AI, machine learning or data driven products in production.
  • The ability to operate credibly with scientists, engineers and senior stakeholders.
  • Experience mentoring, managing or leading other product managers.
  • A blend of strategic thinking and hands on product execution.
  • An academic or professional background aligned to life sciences, computer science, chemistry or related fields, with experience outweighing formal qualifications.

What They Offer

  • A senior leadership role with clear strategic importance.
  • The opportunity to build and scale a new product team in the UK.
  • Significant influence over AI enabled scientific product development.
  • Competitive salary, benefits and long term career progression.
  • A collaborative environment working on complex, high impact scientific challenges.

How to Apply

If this role sounds like your next move, apply below!

To Apply for this Job Click Here

Head of Data Science

London

£150000 - £160000

+ Data Science & AI

Permanent
London

To Apply for this Job Click Here

Head of Data Science

London, Hybrid working (2 to 3 days per week in office). Offering a competitive salary between £150,000 to £160,000 base.

This is a senior leadership opportunity to shape and scale a high impact data science function at the heart of a profitable, fast growing fintech. The role offers significant autonomy and the chance to influence how data science drives commercial decision making across an established UK business.

The Company

They are a London based fintech providing credit and financing solutions to small and medium sized businesses. Operating in a highly data driven environment, they have built a profitable, automated lending platform supported by sophisticated statistical and machine learning models. The business is well capitalised, commercially mature, and continuing to invest heavily in data science as a core differentiator.

The Role

As Head of Data Science, you will lead a multi team data science function that underpins decisions across credit, product, operations and commercial strategy. Your focus will be on maximising the value of data science across the organisation while ensuring the function scales effectively.

Key responsibilities include:

  • Setting direction for the data science function and ensuring work is aligned to core business and profitability metrics such as customer lifetime value.
  • Leading, hiring and developing a large team of data scientists, including managers and senior individual contributors.
  • Improving efficiency, standards and ways of working across multiple data science sub teams.
  • Partnering closely with senior stakeholders across product, engineering, operations and commercial teams to ensure insights are embedded in decision making.
  • Overseeing the use of probabilistic and machine learning models in production environments and contributing to longer term technical and modelling strategy.
  • Helping the business prioritise where data science delivers the greatest commercial impact.

Your Skills & Experience

  • Strong experience leading and scaling sizeable data science teams, including managing managers and individual contributors.
  • A track record of driving measurable commercial impact through data science in a complex business environment.
  • Experience operating in cross functional settings and influencing senior stakeholders.
  • Deep understanding of probabilistic modelling, statistics and machine learning, ideally grounded in an academic background such as mathematics, statistics, physics or a related field.
  • The ability to balance rigour with pragmatism, ensuring models and analysis deliver real world value.
  • Experience building or operating data science functions where work is deployed into production.
  • UK based experience and the right to work in the UK, with sponsorship available if required.

What They Offer

  • Competitive base salary of £150,000 to £160,000.
  • Hybrid working model with 2 to 3 days per week in the London office.
  • Significant autonomy and resource to shape the function and its future growth.
  • The opportunity to lead a large, well established data science team in a profitable and growing business.
  • Clear scope to influence strategy, structure and long term direction of data science across the organisation.

How to Apply

If this sounds like the role for you, apply below or email me at

To Apply for this Job Click Here

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