Director of Decision Science
London / £120000 - £135000 annum
INFO
£120000 - £135000
LOCATION
London
Permanent
Director of Decision Science
West London. £120000 to £135000 plus up to 50 percent bonus and share options. Hybrid with three days per week in the office.
You will play a central role in shaping the modelling strategy for a fast‑growing embedded finance provider. This is a chance to take full ownership of the underwriting and acquisition modelling roadmap, lead two technical teams, and influence how advanced models power customer growth across multiple international markets.
The Company
They are a data driven embedded finance organisation using partner‑supplied data and advanced modelling to deliver personalised financial products to small and medium sized businesses. Operating across the UK, Europe, and North America, they continue to scale rapidly and are investing heavily in decision science. Their environment offers the autonomy to set standards while working with high quality data and impactful lending products.
The Role
* Lead the end‑to‑end development, validation, and monitoring of underwriting and acquisition models across multiple regions.
* Set modelling standards and define what good looks like for build quality, documentation, and governance.
* Guide the long term roadmap for how models support customer acquisition, pricing, and portfolio performance.
* Oversee the integration of MLOps and model deployment into the decision science function.
* Partner with product, engineering, and commercial teams to translate model outputs into real business decisions.
* Manage model development and acquisition analytics teams, ensuring technical excellence and clear development pathways.
Your Skills and Experience
* Strong hands on experience building predictive models in Python using approaches such as gradient boosting.
* Experience working with consumer or commercial risk modelling, decision science, or similar data heavy environments.
* Ability to take a commercially minded approach to acquisition, pricing, and performance.
* Confident managing full model lifecycles including design, testing, deployment, and monitoring.
* Effective leadership and stakeholder skills within technical and non technical environments.
* MLOps or R experience is beneficial but not essential.
What They Offer
* £120000 to £135000 base salary.
* Bonus up to 50 percent, typically 30 to 40 percent.
* Share options.
* Hybrid working with three days per week in the office.
* Clear progression opportunities within a scaling, international business.
How to Apply
To be considered for this Director of Decision Science role, please apply with your CV.
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Senior Machine Learning Engineer
Dublin
€104258.08 - €150595
+ Digital Analytics
PermanentDublin
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Senior Machine Learning Engineer
Dublin, Ireland
This is a chance to join a growing Machine Learning team at a global digital entertainment business, helping to shape how millions of customers discover and buy content in an online store. You will own high-impact pricing and optimisation models, working with modern ML tooling and strong backing from senior leadership.
The Company
They are a well-established entertainment company that has been innovating for around three decades. Dublin is becoming a key hub for their Machine Learning capability, closely aligned with product and content development teams. They combine the scale and stability of a major brand with the impact and pace of a modern digital platform.
The Role
- Design, build and productionise machine learning solutions that optimise pricing, promotions and customer experience in a large-scale digital store.
- Develop time series and forecasting models to predict demand, revenue and customer behaviour across regions and product lines.
- Build and refine optimisation models using operations research techniques to support pricing, promotional strategies and inventory decisions.
- Work end to end across the ML lifecycle, from problem definition, data exploration and feature engineering through to model training, evaluation, deployment and monitoring.
- Collaborate with product, engineering and commercial stakeholders to translate business objectives into scalable ML solutions.
- Contribute to the technical direction of the Dublin ML team, helping to define best practices, tooling and architecture for ML delivery.
Your Skills And Experience
- Strong commercial experience building and deploying machine learning models in production environments.
- Deep expertise in pricing, optimisation or operations research, ideally with hands-on experience of tools such as Gurobi, CPLEX or similar optimisation libraries.
- Strong skills in Python and modern ML frameworks such as PyTorch and TensorFlow.
- Experience working with time series forecasting, demand modelling, churn or uplift modelling.
- Practical experience of delivering ML solutions on cloud platforms such as AWS, GCP or Azure, including containerisation and deployment using tools like Docker, Kubernetes and CI/CD pipelines.
- Experience in e-commerce, digital platforms or online customer experiences is highly desirable, especially work on recommender systems or search.
What They Offer
- Base salary plus 15% annual bonus and 10% pension.
- Flexible working with remote options in Ireland and regular collaboration with teams in the UK and US, plus occasional visits to the Dublin office.
- Opportunity to join a small, high-calibre ML team in Dublin and play a key role in building out their in-house capability.
- Exposure to complex, high-impact ML problems in pricing, optimisation and customer experience, with clear opportunities for progression and technical leadership.
How To Apply
If you are an experienced Machine Learning Engineer with strong pricing and optimisation experience and you want to shape a high-impact ML function in Dublin, please apply with your CV to be considered.
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Product Data Scientist
Leicester
£70000 - £85000
+ Advanced Analytics & Marketing Insights
PermanentLeicester, Leicestershire
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Product Data Scientist
London or Leicester £70,000 – £85,000
The Company
They are a fast‑scaling consumer technology business with over six million customers across the UK and international markets. Their platform serves a broad community of key workers and partners, and they are backed by private equity as they continue to expand digitally and globally. Data is a core focus for the organisation, with dedicated teams across analytics, engineering, BI and data science. The culture is collaborative, mission‑driven and built around ownership, impact and continuous improvement.
The Role
You will play a key role within the product analytics team, partnering closely with product managers, engineering and commercial stakeholders. Your work will focus on understanding user journeys across the app and website, analysing customer behaviour, and identifying opportunities for product and feature development. Responsibilities include:
* Analysing digital customer journeys to understand behaviour patterns and pain points.
* Producing insights on customer segments, purchasing trends and marketing performance.
* Supporting experimentation and hypothesis‑driven product development.
* Building dashboards and self‑serve tools for product and business teams.
* Working with SQL and Python to deliver high‑quality, actionable analysis.
* Supporting insights for specific product areas, including digital payment features.
Your Skills and Experience
* Strong commercial experience in product analytics or digital consumer environments.
* Proficiency in SQL and Python, with the ability to deliver end‑to‑end analysis.
* Experience working with digital data, experimentation and user behaviour analysis.
* Ability to translate complex data into clear, compelling insights for non‑technical stakeholders.
* Comfortable partnering with product teams and influencing strategic decisions.
* Experience in consumer tech, ecommerce, marketplaces or similar customer‑focused sectors.
What They Offer
* Salary up to 85000, with potential stretch to 90000 for exceptional profiles.
* Hybrid working from London Holborn or Leicester Cossington offices.
* Opportunity to join a small, growing team with real ownership of your product area.
* Mission‑driven environment with a focus on positive social impact.
* Flexible working, modern office spaces and a supportive, inclusive culture.
* Strong focus on career development, learning and progression.
How to Apply
Please apply with your CV to be considered for this Product Data Scientist position.
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Lead Optimisation Data Scientist
London
£600 - £900
+ Data Science & AI
ContractLondon
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Lead Optimisation Data Scientist
London, Hybrid
£600 – £900 per day
This is an exciting opportunity to take on high‑impact optimisation challenges within a large and complex operational environment. You will be joining a central Data and AI team that is solving real operational problems at scale, with your work directly influencing critical decision making and efficiency across the organisation.
The Company
They are an international organisation with extensive operational and logistics networks across multiple business units. Their central AI and Data Science function is expanding to deliver practical optimisation solutions that improve performance and reduce disruptions. The team partners closely with operational stakeholders to turn business challenges into deliverable optimisation models. Contractors play a key role in driving technical delivery and shaping solution design.
The Role and Deliverables
* Take end‑to‑end ownership of optimisation problem statements from discovery through to delivery.
* Build production‑ready optimisation or simulation models using Python.
* Translate operational challenges into well‑structured optimisation approaches.
* Develop solutions across areas such as logistics planning, resource allocation and supply chain optimisation.
* Work closely with business and operational teams to gather requirements and validate outputs.
* Provide clear technical recommendations to stakeholders on optimisation opportunities.
Your Skills and Experience
* Strong experience building optimisation or simulation solutions in production environments.
* Background in operations research or mathematical optimisation.
* Experience working on logistics, supply chain or wider operational optimisation problems.
* Ability to translate real‑world business issues into optimisation models.
* Strong Python skills for modelling and optimisation.
* Comfortable working collaboratively with operational stakeholders.
How to Apply
If this freelance opportunity sounds like the right fit, apply today to discuss the project in more detail.
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Credit Risk Analyst
London
£45000 - £50000
+ Risk Analytics
PermanentLondon
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CREDIT RISK ANALYST (BI)
LONDON/HYBRID
UP TO £50,000
This is an exciting opportunity to join a fast‑growing lender at a pivotal moment. You will play a key role in shaping how credit insights are built, understood, and used across the business, with the chance to make a visible impact from day one.
ROLES AND RESPONSIBILITIES:
The Credit Risk Analyst will:
* Build and maintain data pipelines, data lakes, dashboards, and reports to support credit risk monitoring and performance analysis.
* Collect, clean, and process customer data as new lending products launch, ensuring high data quality and consistency.
* Identify trends, patterns, and insights across credit performance and customer behaviour to support strategy and decision making.
* Present findings to stakeholders across Credit, Product, and wider business teams.
* Contribute to a wide range of credit and analytics projects with the opportunity to develop into a broader credit risk role over time.
YOUR SKILLS AND EXPERIENCE:
The ideal candidate will have the following skills and experience
* Strong commercial experience with SQL and a data visualisation tool such as Tableau, Power BI, or similar.
* Hands‑on experience in data cleaning, dashboarding, and BI reporting, ideally within a fintech, lender, bank, or start‑up environment.
* Comfortable working with large datasets and building scalable, accurate reporting solutions.
* Interest in credit, lending, and customer behaviour analysis.
* Python experience is beneficial but not essential.
* Proactive, curious, and motivated to work in a fast‑moving, growing team.
APPLY BELOW!
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Product Analyst FTC
London
£55000 - £70000
+ Advanced Analytics & Marketing Insights
ContractLondon
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Product Analyst FTC
London
Up to £70,000
This is an exciting opportunity to join a growing data function where you will play a key role in shaping product decisions through actionable insight. If you enjoy turning complex data into clear stories that influence strategy, this role gives you the autonomy, variety, and development environment to thrive.
The Company
They are a fast‑scaling, mission‑driven organisation supporting a wide national community through a market‑leading digital platform. With millions of active users, data sits at the centre of every strategic decision. Their teams work collaboratively, champion innovation, and are committed to creating an environment where people genuinely enjoy coming to work. As demand grows, they are continuing to expand their data capabilities and invest in modern tooling.
The Role
In this Product Analyst position, you will partner closely with product, engineering, and commercial teams to ensure decisions are grounded in strong analytical thinking. You will
* Apply quantitative analysis and data storytelling to understand user behaviour and identify opportunities.
* Generate hypotheses, support experimentation, and drive continuous improvement.
* Define and maintain core metrics, working with technical teams to ensure accurate data collection.
* Build and maintain dashboards and data products to enable self‑serve insight.
* Conduct deep dives to answer strategic questions and provide clear recommendations.
* Contribute to internal knowledge bases and support consistent data standards across teams.
Your Skills and Experience
You will bring
* Strong commercial experience working with data in an analytical capacity.
* Proficiency in SQL and experience with tools such as dbt, Python, R, or BI platforms (Lightdash, Looker, Tableau).
* The ability to translate business problems into analytical approaches and communicate insights clearly.
* A curiosity‑driven approach with a focus on impact and continuous improvement.
* A collaborative mindset and confidence working with stakeholders across product and engineering.
What They Offer
* Competitive salary up to £70,000.
* Comprehensive benefits package.
* Modern analytics tooling and a culture that supports professional growth.
* Clear progression opportunities within an expanding data and insights function.
How to Apply
If this Product Analyst role sounds like the right next step for you, please apply with your CV.
To Apply for this Job Click Here
Optimisation Data Scientist
London
£600 - £900
+ Data Science & AI
ContractLondon
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Senior Optimisation Data Scientist
London, Hybrid
Inside IR35
This is a contract opportunity to deliver high impact optimisation solutions within a major operational environment. You will work on complex, real world logistical and resource planning challenges where your models will be used directly in live decision making.
The Company
They are a large international organisation with extensive operational networks across multiple business units. Their central AI and Data Science function is growing and plays a key role in solving high value optimisation problems. The team partners closely with operational stakeholders to develop practical solutions that improve efficiency and reduce disruption across the organisation.
The Role and Deliverables
* Build production ready optimisation or simulation models in Python.
* Take ownership of operational optimisation problems from framing through to delivery.
* Translate stakeholder requirements into structured optimisation approaches.
* Develop solutions focused on logistics planning, supply chain optimisation and resource allocation.
* Collaborate closely with operational teams to refine constraints and validate outputs.
* Provide clear technical recommendations to support decision making.
Your Skills and Experience
* Strong experience delivering optimisation or simulation solutions in production environments.
* Solid background in operations research or mathematical optimisation.
* Experience working on logistics, supply chain or resource allocation problems.
* Ability to convert business problems into practical optimisation models.
* Advanced Python modelling skills.
* Confident engaging with operational stakeholders.
How to Apply
If this contract sounds like a strong fit, submit your details to discuss the project further.
To Apply for this Job Click Here
Senior Optimisation Data Scientist Contract
London
£600 - £900
+ Data Science & AI
ContractLondon
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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
Credit Risk Analyst
London
£45000 - £50000
+ Risk Analytics
PermanentLondon
To Apply for this Job Click Here
Credit Risk Analyst
£45,000-£50,000
London + hybrid working (3-4 days per week in the office)
Harnham are working with a fast growing UK lender in the secured and unsecured lending space, hiring a Credit Risk Analyst to support their next phase of growth. This is a great opportunity for an early career analyst to join a business launching new products and scaling rapidly.
THE COMPANY
- A high growth UK lending scale‑up offering innovative consumer credit products.
- Recently reached profitability and now entering a major expansion phase, including the launch of a new unsecured loan product.
- Operates in a fast paced, low bureaucracy environment where analysts can make a real impact.
THE ROLE
This role sits within a growing credit risk function and will focus on shaping acquisition strategies, underwriting policy and supporting the launch of new lending products. You’ll work across a broad variety of projects within credit risk, with the opportunity to develop modelling and decisioning skills.
Specifically, you can expect to be involved in:
- Developing and optimising credit strategies for new customer acquisition.
- Working on origination, scoring cut‑offs and accept/decline policies.
- Enhancing and maintaining decision engine logic.
- Contributing to credit modelling and wider analytics where appropriate.
- Using data to support improvements across the full credit life cycle.
YOUR SKILLS AND EXPERIENCE
- 1-2 years’ experience in credit risk, financial services analytics, or similar data‑driven environments.
- Experience working with customer or credit data to generate insight.
- Familiarity with credit strategy, policy, scoring, MI or portfolio analytics.
- Strong SQL skills (essential).
- Python and data visualisation tools beneficial.
THE BENEFITS
- Opportunity to have real influence in a small, high growth team.
- Strong progression potential with clear internal development pathways.
- Exposure to a wide range of credit products and analytics projects.
- Fast‑moving environment with the ability to implement change quickly.
THE PROCESS
- Initial 30‑minute interview with HR.
- 30‑minute interview with a senior member of the credit team.
- Final in‑person stage including a short case‑study discussion and meeting with senior leadership.
HOW TO APPLY
Please register your interest via the apply link on this page.
To Apply for this Job Click Here
Data Engineer
Birmingham
£45000 - £55000
+ Data Engineering
PermanentBirmingham, West Midlands
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Data Engineer
Remote UK
Salary: £45,000 – £55,000
This is an exciting opportunity to step into a high-impact Data Engineering role within a fast-scaling data and machine learning environment. You will sit at the core of the engineering function, working closely with a large data science group and shaping the foundations of their internal tooling and pipelines.
The Company
They are a rapidly growing data and analytics organisation operating in the alternative data and machine learning space. Their platform powers KPI prediction models used by investment-focused clients, and they have built a strong engineering culture to support a substantial data science function. With significant recent investment and continued growth, they are now expanding their ETL and automation capabilities to strengthen internal workflows and infrastructure.
The Role
You will focus on building, maintaining, and optimising internal ETL pipelines and workflow automations that support data scientists and enable reliable, scalable reporting.
Key responsibilities include:
* Designing and maintaining custom ETL pipelines in a cloud-native environment.
* Automating internal processes and integrations across tools and APIs.
* Supporting workflow orchestration using technologies such as Airflow or AWS Step Functions.
* Containerising and deploying services using Docker.
* Collaborating with data scientists to streamline their data workflows.
* Contributing to improvements across orchestration, tooling, and internal engineering processes.
Your Skills and Experience
* Strong commercial experience with Python and common data libraries.
* Proven ability to build and maintain ETL pipelines.
* Hands-on experience with AWS services.
* Experience with Docker and containerised workflows.
* Familiarity with workflow orchestration tools.
* Comfortable integrating with APIs and external tooling.
* A practical, delivery-focused approach with the ability to own tasks end to end.
How to Apply
If this sounds like your next step, please send your CV to register your interest.
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Trading Lead, Marketing Performance – Contract
London
£400 - £500
+ Digital Analytics
ContractLondon
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Trading Lead, Marketing Performance
Marketplace
London – Hybrid
£400-£500 per day – Outside IR35
This is an opportunity to join a fast‑paced, data‑driven marketplace business as they elevate their trading capabilities. You will play a pivotal role in shaping how marketing investment drives customer acquisition, revenue and long‑term value. This project suits someone who thrives at the intersection of commercial strategy, marketing performance and customer insight.
The Company
They are a well‑established platform business. With a rapidly growing customer base and a wide ecosystem of partners, they rely heavily on data to guide marketing, trading and commercial decisions. They are expanding their trading function to strengthen the link between insight, marketing execution and commercial outcomes. This contractor will help shape how the organisation delivers efficient growth in a highly competitive market.
The Role and Deliverables
- Act as the commercial conscience for all marketing performance, ensuring activity aligns with quarterly trading goals.
- Scrutinise marketing channel performance and challenge weekly plans to maximise P&L impact and order volume.
- Use customer, market and performance insights to shape commercial plans and marketing actions across CRM, paid media and onsite journeys.
- Drive short‑term tactical levers when forecasts shift, working closely with Trading, Marketing and Commercial teams.
- Build a clear understanding of user base dynamics and identify opportunities to improve conversion, retention and customer economics.
- Track performance against trading plans, holding teams accountable for delivering ROI across channels.
Your Skills and Experience
- Strong commercial mindset with experience driving performance across a marketing funnel within a platform or marketplace business.
- Ability to interpret analytical outputs and translate them into meaningful commercial recommendations.
- Confident challenging plans, identifying root causes of performance and pushing for better outcomes.
- Skilled at working cross‑functionally and simplifying complex data for senior stakeholders.
- Knowledge of customer journeys, conversion funnels and trading dynamics across CRM, paid search, paid social and onsite channels.
- Comfortable operating at pace, making decisions and influencing change without owning channel deployment.
How to Apply
If this sounds like the right contract for you, please apply with your CV and we will be in touch.
Marketing Performance / Trading Strategy / Customer Acquisition / Commercial Analytics / Conversion Funnel / Performance Marketing / Platform Marketplace / P&L Optimisation
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Senior CRM Manager
City of London
£60000 - £65000
+ Advanced Analytics & Marketing Insights
PermanentCity of London, London
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Senior CRM Manager
London, Hybrid (3 days in office)
Up to £65,000
This is an excellent opportunity to take ownership of strategic, insight driven CRM programmes across multiple well-known brands. You will shape multi-channel customer engagement, lead projects end to end, and act as a trusted advisor to senior stakeholders.
The Company
We are a growing digital organisation focused on delivering data led CRM and customer marketing programmes. We partner with well established brands across a variety of sectors, providing strategic and operational support that drives measurable commercial impact. Our teams work collaboratively, offering a supportive culture with clear opportunities to grow your CRM capability.
The Role
A strategic, client facing CRM role where you will lead multi-channel customer programmes across brands.
* Develop multi channel CRM strategies aligned to client objectives.
* Manage email, push, and SMS activity including segmentation, automated journeys, and dynamic content.
* Review existing CRM programmes to identify performance and process improvements.
* Advise on CRM best practice and support migration to new marketing automation platforms.
* Create data strategies that ensure access to the right inputs for understanding customer behaviour.
* Analyse performance and present clear, actionable recommendations.
* Build strong relationships with senior stakeholders and support account growth.
* Lead projects while mentoring junior team members.
Your Skills and Experience
* Strong commercial experience in CRM within multi brand or multi client environments.
* Confident presenting to senior stakeholders in client facing settings.
* Hands on experience with CRM or marketing automation tools.
* Comfortable working across email and wider multi channel CRM activity.
* Analytical approach with the ability to translate data into actionable insight.
* Collaborative mindset and confidence leading projects in a fast paced environment.
What We Offer
* Exposure to a wide range of CRM challenges and well known brands.
* Supportive culture with clear development and progression opportunities.
* Regular team initiatives and a positive working environment.
To Apply for this Job Click Here
CRM Executive – Bloomreach/Braze
London
£30000 - £35000
+ Advanced Analytics & Marketing Insights
PermanentLondon
To Apply for this Job Click Here
CRM Executive – Bloomreach/Braze
Location: West London (Hybrid, 2-3 days in office)
Salary: Up to £35,000
We’re looking for a CRM Executive to join a global digital team delivering innovative marketing and customer experience solutions. This hybrid role offers exposure to high-profile clients and a collaborative, fast-paced environment.
What you’ll do:
-
Support the execution of multi-channel CRM campaigns.
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Manage campaign setup, segmentation, and performance reporting.
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Analyse data to optimise campaigns and improve customer engagement.
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Help drive CRM system improvements and adoption across teams.
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Collaborate with colleagues to align CRM initiatives with business goals.
What we’re looking for:
-
2+ years of CRM experience, ideally with one or more leading marketing platforms.
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Strong degree/university background.
-
Open to candidates from a range of professional backgrounds.
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Comfortable working in a collaborative, fast-moving environment.
Why this role:
-
Join a global team delivering cutting-edge marketing solutions.
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Work with a variety of well-known brands.
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Gain exposure to both client-facing and technical CRM work.
Recruitment process:
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Initial 30-minute interview
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Short online task (~17 minutes)
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Interview with line manager
Find out more ad apply via the link beloew.
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Final face-to-face in the office
To Apply for this Job Click Here
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