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!
Data Scientist
London
£55000 - £65000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Data Scientist
London, hybrid working
£55,000 to £65,000 plus equity
This is an exciting opportunity to join a fast paced, data driven organisation where you will have real ownership of end‑to‑end modelling. You will work on high impact machine learning models that directly shape lending decisions across a rapidly expanding US portfolio, giving you scope to make a meaningful contribution from day one.
The Company
They are a high growth fintech known for their strong technical culture, commercial success and continued expansion across multiple consumer finance products. Data sits at the heart of their decision making, and they are committed to building high quality, scalable models that drive product performance. Their multidisciplinary teams collaborate closely, ensuring ideas move quickly from concept to production.
The Role
* Build and optimise predictive machine learning models, including credit risk scorecards.
* Develop models across lending, income verification, early repayment and forecasting.
* Support the automation of lending decisions across loan and credit card products.
* Work on acquisition, income verification, marketing and direct mail models as US volumes grow.
* Manage the full modelling lifecycle, from data collection to deployment.
* Communicate insights and modelling decisions effectively to technical and non‑technical stakeholders.
Your Skills and Experience
* Strong commercial experience building machine learning models in Python.
* Solid command of SQL with the ability to work confidently with large datasets.
* Experience working with customer prediction models such as forecasting, segmentation or pricing.
* Ability to take ownership of projects and deliver independently.
* Strong analytical capability supported by a STEM academic background.
* Clear communication skills and the confidence to work closely with stakeholders.
Nice to have skills include experience in credit risk or scorecard modelling.
What They Offer
* Salary between £55,000 and £65,000.
* Equity package.
* Hybrid working pattern with office days Tuesday to Thursday.
* The chance to work on a growing US portfolio with significant modelling ownership and scope for impact.
* A collaborative environment focused on high standards, performance and progression.
How to Apply
To apply, send your CV.
To Apply for this Job Click Here
Data Scientist
London
£45000 - £50000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Data Scientist
London, £45000 to £50000
If you are looking for a role where you can shape projects, work end to end, and make a clear impact on real‑world customer journeys, this opportunity gives you the variety, autonomy and growth you may be missing. You will work across predictive modelling, geospatial analytics and open‑ended discovery work, all while developing your full technical stack in a supportive team environment.
The Company
They are a major UK transport operator with a growing focus on data driven decision making. Their commercial and data functions are investing in analytics to better understand customer behaviour, improve network performance and support long term planning. The team is collaborative, friendly and keen to bring in someone who wants to help shape how Data Science is used across the business.
The Role
In this position, you will:
* Lead end to end Data Science projects with real operational and commercial impact.
* Build predictive models that help explain customer behaviour and network performance.
* Explore mobility and geospatial datasets to understand how customers move from A to B.
* Identify opportunities in open datasets and turn them into actionable insights.
* Work closely with stakeholders to scope problems, test ideas and deliver practical solutions.
* Contribute to the development of cloud based analytics and production workflows.
Your Skills and Experience
* Strong commercial experience using Python and SQL for modelling and analysis.
* Confident using core Data Science libraries and techniques.
* Comfortable working with complex or ambiguous datasets and shaping your own approaches.
* Able to communicate insights clearly to technical and non technical teams.
* Experience in transport, mobility, logistics or consulting is beneficial.
What They Offer
* Salary between 45000 and 50000.
* Significant travel benefits including discounted UK rail travel.
* A friendly, supportive team where your ideas will be valued.
* Exposure to full stack Data Science, cloud tooling and end to end project ownership.
* The chance to make a meaningful mark in a developing data function.
How to Apply
If this sounds like the right next step for you, please submit your CV to begin the process.
To Apply for this Job Click Here
Senior Optimisation Data Scientist Contract
London
£600 - £900
+ Data Science & AI
ContractLondon
To Apply for this Job Click Here
Senior Optimisation Data Scientist Contract | £600-£900/day | Hybrid London
We are working with a major international transport and operations organisation building out a central AI and Data Science capability focused on solving complex operational optimisation problems across multiple business units.
This is a hands-on contract role focused on delivering real optimisation solutions that directly impact large-scale operations. The work centres around logistics, resource allocation and supply chain optimisation problems where the goal is to improve operational efficiency and reduce disruption across a distributed operational network.
Typical problem areas include optimisation of resource allocation, logistics planning and operational decision-making. One example use case involves optimising the allocation of critical components across a large operational fleet to minimise downtime and maximise utilisation. Similar optimisation challenges exist across supply chain planning, operational efficiency and network optimisation.
The team operates centrally but works closely with operational stakeholders across the organisation. Contractors will typically take ownership of optimisation problems end-to-end, from understanding the business problem through to designing and delivering production-ready optimisation models.
This role requires someone who has built optimisation or simulation solutions in real production environments. They are not looking for purely analytical data scientists or academic optimisation specialists. The successful candidate will be able to translate real-world operational problems into practical optimisation approaches and deliver working solutions.
The role requires a consultative mindset and strong stakeholder engagement. You will be expected to work closely with business teams, identify optimisation opportunities and make clear technical recommendations.
Key requirements:
* Proven experience building optimisation or simulation solutions in production
* Strong operations research or mathematical optimisation background
* Experience working on logistics or supply chain optimisation problems
* Experience translating business problems into optimisation models
* Strong Python-based modelling experience
* Ability to work closely with operational stakeholders
Typical backgrounds include airlines, logistics platforms, retail supply chain, transport networks or other large operational environments.
Contract details:
* £600-£900 per day
* Initial contract to end of year with likely extension
* Hybrid working – 3 days onsite in London
* Occasional travel within Europe may be required
To apply, please email
To Apply for this Job Click Here
Data Scientist
London
£45000 - £50000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Data Scientist
London Hybrid – 2-3 days in office
Competitive salary between £45,000 and £50,000 plus benefits
This is a great opportunity to join a high‑impact data function within a major transport organisation, working on complex datasets, geospatial challenges, and predictive modelling that directly shapes customer experience and operational performance. If you are looking for a hands‑on, traditional Data Science role with plenty of autonomy and greenfield opportunity, this is a strong next step.
The Company
They are a leading player in the UK transport sector, operating a large and busy network. With data playing an increasingly important role in decision‑making, they are investing in a growing commercial and data function to drive insight, efficiency and innovation. The Data team sits within a wider commercial structure and works closely with stakeholders across the business to unlock value from complex, high‑volume datasets.
The Role
As a Data Scientist, you will work on a broad range of modelling and analytical projects, from exploratory analysis to predictive modelling and geospatial insight. You will help the team extract deeper value from diverse datasets and shape how the organisation makes data‑driven decisions.
Your responsibilities include:
- Delivering end‑to‑end Data Science projects, from scoping through to modelling and stakeholder presentation.
- Building predictive models in areas such as fleet behaviour, sensors, demand forecasting and customer journey patterns.
- Conducting geospatial analysis using mobile network and location‑based datasets to understand journey flow and catchment behaviour.
- Exploring open‑ended datasets to identify value, opportunities and actionable insights.
- Collaborating with Data Engineers and Analysts on data modelling, dashboards and web‑based tools.
- Communicating findings clearly to stakeholders with varied levels of data literacy.
Your Skills and Experience
You will bring strong commercial experience in:
- Python and SQL, along with core Data Science libraries and tools.
- Working with messy, complex datasets and extracting meaningful insight.
- Building and deploying predictive models and Machine Learning solutions.
- Geospatial analysis and the ability to explore open datasets.
- Communicating technical concepts in a clear, simple, non‑jargon way.
- Working autonomously and navigating ambiguity in data environments.
What They Offer
- Competitive salary between £45,000 and £50,000
- Hybrid working, 2-3 days per week in the office
- Travel benefits, including 75 percent off UK rail travel
- A supportive data team with opportunities to lead projects, innovate and shape the Data Science capability
How to Apply
If this sounds like your next step, apply today or email me at
To Apply for this Job Click Here
Staff Data Scientist
Chicago
$100 - $110
+ Data Science & AI
ContractChicago, Illinois
To Apply for this Job Click Here
Staff Data Scientist (Contract – Remote)
A fast-growing social and content platform is looking to bring on 1-2 experienced Staff Data Scientists to help rebuild and strengthen its data science capability. This role will work closely with product leadership to drive key company metrics and help shape the growth of the platform’s social ecosystem.
The Role
You will partner closely with Product Managers and engineering teams to analyse user behaviour across the platform’s social graph and develop data-driven strategies to support creator and host growth. A key focus will be identifying opportunities to help users expand their hosting networks and drive engagement and revenue.
The team operates in a fully remote, low-meeting environment, so strong asynchronous communication and the ability to operate independently are essential.
Key Responsibilities
-
Own and drive key company metrics related to platform engagement and growth
-
Partner closely with Product Managers to identify and prioritise data-driven opportunities
-
Analyse and model social graph dynamics to understand user interaction patterns
-
Design and run A/B tests to optimise product experiences
-
Develop next-best-experience recommendations to improve user outcomes
-
Contribute to and maintain an existing Python-based data science codebase
-
Support internal data engineering workflows where required
-
Deliver meaningful insights and deep-dive analyses within the first month of onboarding
Requirements
-
Proven Staff-level Data Scientist experience
-
Very strong SQL skills
-
Strong Python expertise in production environments
-
Experience with large-scale experimentation / A/B testing
-
Ability to work with large datasets and social interaction data
-
Clear, proactive communicator who thrives in asynchronous environments
-
Experience working closely with product teams on growth initiatives
-
Comfortable operating with high expectations and fast onboarding
Nice to Have
-
Experience working with social platforms, community products, or consumer marketplaces
-
Familiarity with social graph analysis
-
Experience with Django
-
Experience supporting or collaborating with data engineering teams
-
Background working in fast-moving or “scrappy” product environments
Working Environment
-
Fully remote team
-
Flexible on timezone, but availability relative to PST working hours should be communicated upfront
To Apply for this Job Click Here
Lead Data Scientist
London
£90000 - £100000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Principal Data Scientist
London
If you’re a hands-on Data Science / AI specialist who loves solving real operational problems, this role puts you right at the heart of client delivery. You’ll shape the problems, design and build the solutions, and see your models deployed into live environments – not parked as endless POCs.
THE COMPANY
This fast-growing consulting firm helps organisations across the public sector, defence and commercial markets deliver measurable improvements in performance through data, AI and digital solutions. They are building a modern AI & Digital capability that sits at the front of transformation programmes, working shoulder-to-shoulder with clients on their toughest operational challenges.
THE ROLE
As a Lead Data Scientist, you will blend hands-on technical work with consulting, stakeholder management and practice-building.
- Identifying high-impact Data Science, Machine Learning, AI and simulation opportunities on client engagements
- Scoping and shaping problems, designing experiments and roadmaps, and then building and deploying models end-to-end
- Leading technical workstreams, managing small teams and ensuring projects are delivered on time and to a high standard
- Translating complex technical concepts into clear, compelling narratives for non-technical senior stakeholders
- Coaching and mentoring consultants to build their capabilities in DS/ML/AI and modern analytics
YOUR SKILLS & EXPERIENCE
- Strong background in Data Science, Machine Learning, AI, simulation or advanced analytics, with clear examples of end-to-end delivery
- Proven ability to shape, not just execute: from defining the problem and designing the solution, through to delivery and measurement of impact
- Consulting capability – comfortable running client workshops, identifying opportunities, influencing senior stakeholders and supporting pitches
- Evidence of measurable commercial or operational impact (e.g. revenue growth, cost reduction, efficiency gains, service improvement)
- Hands-on experience building models and turning prototypes into robust, production-ready solutions
- Experience leading teams or technical workstreams in a project environment
- UK citizenship (for security clearance purposes) and willingness to travel across the UK 2-3 days per week, depending on client needs
Nice-to-have experience:
- Background in a consulting environment or a high-performing in-house DS/AI team
- Exposure to sectors such as defence, public sector and consumer/retail
- Familiarity with modern data and AI tooling such as Python, Spark, Databricks, Azure cloud, and Generative AI platforms (experience with specific tools is helpful but not essential)
- A mix of technical, product and operational experience – comfortable talking both code and business outcome
To Apply for this Job Click Here
Lead Data Scientist
City of London
£80000 - £125000
+ Data Science & AI
PermanentCity of London, London
To Apply for this Job Click Here
Lead / Principal Data Scientist
TRAVEL ACROSS THE UK REQUIRED
This is a great opportunity to join a growing consultancy and lead digital, AI, and analytics solutions that deliver real operational impact across the UK.
The Company
They are a specialist consulting organisation that helps complex public and private sector clients improve performance through data, AI, and digital tools. Their culture is collaborative, outcome focused, and built around delivering practical solutions that stick. With digital capability expanding rapidly, you will help shape how they deliver technology driven change.
The Role
* Identify opportunities to apply AI, analytics, and digital tooling.
* Lead technical workstreams from design through to implementation.
* Work closely with client teams on site across the UK.
* Translate technical concepts for non‑technical audiences.
* Support the development of colleagues and digital practices.
Your Skills and Experience
* Strong commercial experience delivering digital or AI solutions end to end.
* Expertise in at least one of AI, data science, analytics, or digital engineering.
* Confident leading multi‑disciplinary teams.
* Clear communication and stakeholder engagement skills.
* Flexible to travel to client sites across the UK.
To Apply for this Job Click Here
Junior Data Scientist
London
£45000 - £55000
+ Data Science & AI
PermanentLondon
To Apply for this Job Click Here
Junior Data Scientist
London
Competitive salary between £45,000 – £55,000 plus benefits
This is an excellent opportunity for an aspiring Data Scientist to step into a role offering early ownership, broad project exposure and genuine career progression. If you are looking for a position where you can grow quickly, develop strong consulting skills and work across a wide range of industries, this role stands out.
The Company
They are a well-established, global consultancy with a growing Data and Analytics function at the heart of their European business. The team combines technical capability with strategic insight, supporting clients across multiple sectors. You will join a collaborative group where learning is prioritised and downtime between projects is used for development, training and internal innovation.
The Role
As a Data Scientist, you will work across both client-facing and internal initiatives, typically focusing on one main project at a time.
Responsibilities include:
- Supporting client engagements, from exploratory data analysis to dashboards and statistical insights.
- Building and contributing to modelling and analytics workstreams with guidance from experienced team members.
- Working on internal projects, including proposals, tooling and machine learning initiatives.
- Collaborating with technical and non-technical colleagues to deliver clear, actionable insights.
- Gaining exposure to a wide range of industries, from life sciences and healthcare to transport, logistics and financial services.
Your Skills and Experience
You will bring:
- Strong Python skills and a solid grounding in data science principles.
- Effective communication skills and the ability to explain your work clearly.
- A proactive mindset and an interest in consulting-style problem solving.
- Experience with SQL or cloud platforms is a bonus, and quick to learn.
- A Bachelors or Masters in a quantitative field, with PhD backgrounds also welcome.
What They Offer
- Competitive salary between £45,000 – £55,000 plus a 5,000 first‑year sign‑on bonus.
- Company profit‑share bonus scheme, typically around 7 percent.
- Comprehensive benefits including private health insurance, life insurance, disability cover, travel insurance and a pension scheme.
- Wellbeing and work-from-home allowances.
- Eye care and cycle vouchers.
- A supportive culture with strong development pathways and clear upward mobility.
- Hybrid working from a central London office.
How to Apply
If you are ready to grow your data science career in a consultancy environment, apply below or email me at for more information.
To Apply for this Job Click Here
Clinical Data Scientist
San Francisco
$160000 - $190000
+ Data Science & AI
PermanentSan Francisco, California
To Apply for this Job Click Here
Clinical Data Scientist
San Francisco, California
Remote
$160,000 – $190,000 + Equity
About the Company
This innovative health tech startup is working to improve the oncology drug development process by providing better patient data to drug developers as well as better access to clinical trials for patients. This series B startup is expending to meet demand.
About the Role
As a Clinical Data Scientist, you’ll execute the last leg of the clinical data pipeline by transforming, cleaning, validating, and delivering high‑quality clinical datasets for pharma partners. Heavy collaboration with Clinical Ops, AI Engineering, and Data Delivery.
Role Responsibilities
- Transform raw, abstracted, and AI‑processed data into CDISC SDTM/ADaM datasets
- Program statistical outputs (tables, listings, figures) in SAS/R/Python
- Investigate data anomalies across multiple messy data inputs
- Define data dictionaries and standards before study kickoff
- Handle data in a HIPAA‑aligned manner
Key Requirements
- 2-5 years in clinical data science, stat programming, or clinical data management
- Pharma/Biotech experience
- SAS, R, Python, SQL
- Real‑world clinical data or oncology trials
- CDISC SDTM/ADaM
To Apply for this Job Click Here
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News & Blog
With over 10 years experience working solely in the Data & Analytics sector our consultants are able to offer detailed insights into the industry.
Visit our Blogs & News portal or check out our recent posts below.
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We understand the challenges our
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recruitment solutions needed to drive
business success through Data &
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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.
Candidate /
Market Research Analyst
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.
Client /
Data Direction – Broadcast Media
Candidate – Data Analyst
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.
Candidate /
Data Analyst
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.
Client /
Director of Customer Data Science – Apparel
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 /
Chief Data Officer
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.
Candidate /
Digital Media and Analytics
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!
