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Role: Senior / Principal Data Architect
Salary: £115,000 – £118,000 + Bonus
WFH: 3 Days/Week Onsite (Shoreditch)

Overview

Our client, a leading global technology and business consultancy focused on financial services, is hiring a Senior / Principal Data Architect to join their award-winning Data Practice. This is a hands-on architecture and leadership role, supporting major banking and financial services clients with modernising data infrastructure, guiding cloud transformation, and shaping scalable, best-in-class data platforms.

You’ll join a team of 800+ data professionals in a collaborative, inclusive environment that encourages innovation and values individuality. If you’re passionate about strategy, architecture, and delivering meaningful impact in data-driven transformations, this is an opportunity to lead from the front.

Key Responsibilities

• Lead complex agile consulting projects focused on data architecture design and delivery
• Advise technology leaders on modern best practices in data management
• Develop cloud-based enterprise data platforms using AWS, Azure, or GCP
• Define services and frameworks that enable efficient, scalable, and secure data management
• Contribute to internal IP and delivery frameworks across the firm’s data practice
• Manage small project teams and support capability building and business development

Ideal Candidate

• Proven experience designing and implementing enterprise data strategies and governance
• Deep knowledge of contextual, logical, and physical data modelling
• Hands-on experience with cloud data migration and architecture (AWS, Azure, or GCP)
• Strong grasp of metadata management, data privacy/security frameworks, and cloud ecosystem best practices
• Financial services project experience preferred, with stakeholder-facing communication skills
• Comfortable operating across complex environments, leading multiple workstreams

Preferred Skills & Experience

• Cloud architecture certifications (AWS/GCP/Azure)
• Experience designing data lakes and modern cloud storage patterns
• Familiarity with data cataloguing, classification, and semantic/graph modelling
• Exposure to ESG data, risk/compliance platforms, or financial crime data architectures
• An understanding of cloud cost management, automation, and network architecture

Tech Domains

• Cloud Platforms: AWS, Azure, GCP
• Data Management: Metadata tools, privacy frameworks, security architecture
• Modelling: ER, Contextual, Semantic, Logical/Physical
• Orchestration & Integration: API design, DevOps support, cloud-native workflows

Why Join?

• Work on high-impact transformation projects with top-tier global banks
• Join an agile, innovation-focused culture with flat structure and open collaboration
• Learn and grow in a highly supportive environment with extensive L&D support
• Inclusive and diverse culture with enhanced family-friendly policies
• Join the multi-award-winning data team, voted Best Consultancy in Data Management and ESG

Interview Process

1. Initial Discussion – Culture, expectations, and mutual fit
2. Technical/Project Interview(s) – Assessing delivery experience and architectural thinking
3. Final Interview – Client-facing alignment and career progression discussion

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Lead Data Scientist
London
Private Equity
£140,000 – £150,000 + benefits

Harnham is working with a tech firm in the Private Equity space and hiring a few positions across Data Science, Machine Learning Engineering and Data Engineering.

The company have an impressive founding team and hold a strong reputation within the Data & AI and Private Equity space.

They partner with some leading investment firms in deploying AI and machine learning for the sole purpose of creating value. Often working in ambiguous and greenfield environments, you will collaborate with a strong team of technical people across multiple industries to solve complex commercial and data problems, delivering key data science initiatives that drive performance and revenue.

In this role you will lead the technical teams that deliver value.

The Role – Lead Data Scientist

You will be:

• Working on multiple engagements within portfolio companies across various different industry sectors
• Delivering key Data Science / AI initiatives that drive value for customers.
• Shaping how projects are delivered, driving performance and working closely with C-level execs.
• Providing technical leadership across the business, with a focus on end-to-end machine learning solutions.

Experience – Lead Data Scientist

You will have:

• An M.Sc. or Ph.D. in: Machine Learning, Statistics, Applied Mathematics, Computer Science, Engineering, etc.
• Experience using Python is a must
• Knowledge of cloud technologies important (agnostic)
• A strong knowledge of statistical/machine learning models applied to real-world problems
• A keen interest in problem-solving and using scalable machine learning to solve data-related problems is important
• A focus on using data science to create value is essential
• A strong interest in working across a variety of different industry sectors and problem areas.

BENEFITS

Up to £150,000 base salary
Competitive bonus
The opportunity to join a world-class and growing team

HOW TO APPLY

Please register your interest by sending your CV via the Apply link on this page. For further details or to enquire about other roles, please contact Nick Mandella at Harnham.

KEYWORDS

Python, SQL, AWS, GCP, Azure, Cloud, Databricks, Docker, Kubernetes, CI/CD, Terraform, Pyspark, Spark, Kafka, machine learning, statistics, Data Science, Data Scientist, Big Data, Artificial Intelligence, private equity, finance.

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Role: Full Stack Engineer
Salary: £80,000-£90,000 + Equity
WFH: Fully Remote

Overview

Our client is a fast-growing RegTech startup using AI to transform how financial institutions approach AML and compliance workflows. They’re hiring Full Stack Engineers to join a compact, fast-moving team working on two flagship products-an intelligent API for AML decision-making and an AI-driven report generation platform simulating the work of a financial crime analyst.

The company is venture-backed, with an active client base across fintechs and ambitions to break into large-scale enterprise. This is a unique opportunity to have end-to-end impact-designing, building, and deploying features in an environment where engineering best practices are respected and expected.

Key Responsibilities

• Design and build scalable backend and frontend components for core products
• Help establish technical standards, best practices, and delivery processes across the engineering team
• Drive feature development from concept to deployment, working autonomously or in small teams
• Collaborate with engineering leadership on technical direction and architectural decisions
• Work on complex problems involving data aggregation, report generation, and AI agent integration
• Contribute to product evolution based on customer feedback and internal roadmap

Ideal Candidate

• 5-10 years’ experience delivering production software in fast-paced environments
• Comfortable working across backend and frontend (slight backend lean preferred)
• Strong ownership mindset-able to ship features independently (build + deploy)
• Experience managing multiple workstreams in low-management settings
• Product-focused engineer who thrives in flat, startup-style team structures
• Good grasp of engineering best practices, code quality, and system design

Tech Stack

• Python
• JavaScript / TypeScript
• SQL
• AWS (Cloud Infrastructure)

Interview Process

1. Technical Discussion (30-60 mins)
2. Collaborative Co-working Session (60-90 mins) – Solve a real-world problem together via screen share

Both stages are conducted remotely.

Additional Details

• Urgent hire
• Equity included
• Sponsorship not available at this time

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Director of Fraud Analytics

Up to £130,000

London

Hybrid

The Company

This is an exciting opportunity to join a leading global business and drive its fraud strategy and analytics function. You’ll take charge of a high-performing fraud team, expand the function worldwide, on-board new vendors, and shape the company’s long-term fraud prevention road-map.

The Role

As a Director of Fraud Analytics, you will be:

• Leading the fraud strategy and fraud analytics function for the global business
• Build out strategies and controls for fraud, financial crime, and spams
• Leading a team to develop fraud prevention models and strategies
• Setting out the fraud prevention roadmap in the short and long term
• Using SQL and Python daily for analysis and fraud rule development
• Managing, hiring, and building out the fraud function on top of an existing strong team

Your skills and experience

To be successful as a Director of Fraud Analytics, you will need:

• Experience managing a Fraud Analytics team
• Strong experience developing Fraud strategies for Payments Fraud
• Strong working experience coding in SQL and Python
• Experience working for a payment business and/or fintech
• STEM Degree from a top university

Salary + Benefits

Up to £130,000 + Bonus + Equity

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Founding Software / Platform Engineer

Stealth Fintech (London / Hybrid)

Up to £150,000 + Equity

I’m working with a stealth-mode startup that’s building a GPU-backed trading platform, with the goal of making GPU trading efficient and unlocking price discovery in a completely new market. With strong interest from SF venture capitalists and a seed round expected to close next month, this is the chance to join at the most exciting stage of the journey.

The founding team already includes world-class talent from MIT, Caltech, Harvard, Citadel, and Meta. They’re now looking for a Founding Engineer with pedigree from top-tier tech or fintech companies, someone who can both lead and build, and who will play a visible role in fundraising as proof of the company’s ability to attract exceptional talent.

Why this role?

• Impact: Shape the architecture and scale of a trading platform in a completely new asset class.

• Visibility: Be part of the fundraising pitch and future public face of the company.

• Ownership: Drive technical decision-making across backend, infrastructure, and deployment.

• Growth: Join a team of proven founders with deep technical and financial expertise.

What you’ll be doing:

• Building and scaling a complex trading platform from the ground up.

• Improving and expanding cloud deployment processes (currently GCP).

• Leading on backend engineering in Python, with PostgreSQL for data storage.

• Expanding Terraform usage across deployments and managing Kubernetes clusters.

• Collaborating with the founding team on data acquisition, frontend, and platform scaling.

What they’re looking for:

• Strong experience from a recognisable tech scale-up or fintech (e.g., Revolut, Spotify, Bloomberg, etc.).

• Track record of building complex systems – either in financial services, B2B SaaS, or other data-heavy domains.

• Hands-on with Python, Terraform, Kubernetes, and cloud (GCP preferred).

• Understanding of markets, trading systems, or brokerage platforms (Bloomberg, commodities, etc.) would be a big plus.

• Someone equally comfortable building as they are leading – you’ll be in the trenches but also shaping the vision.

Tech stack:

GCP | Python | PostgreSQL | Kubernetes | Terraform | React | Typescript

What’s on offer:

• Founding-level equity + salary.

• A central role in the fundraising journey and future company growth.

• Work alongside some of the brightest minds in finance, AI, and engineering.

• The chance to define an entirely new market.

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Analytics Manager

Location: Hybrid (2-3 days/week in Trowbridge)
Salary: Up to £55,000 + benefits

Are you passionate about data and solving real-world business problems? Our client, a well-established multinational food business, is seeking a hands-on Analytics Manager to join their high-performing data team.

About the Role

This role sits within the Forensic Analytics function – focused on deep-dive analysis and strategic problem-solving. You’ll work across international B2B and D2C markets, delivering actionable insights on key business questions like:

• “Why are sales dropping in this category?”

• “How can we improve logistics efficiency?”

• “Is 350 products the right number for our portfolio?”

You’ll collaborate with stakeholders, shape analytics roadmaps, and lead projects from data exploration to insight delivery.

Key Responsibilities

• Define analytical approaches to tackle business challenges

• Identify and explore relevant data sources

• Deliver clear, insight-driven storytelling using visualisation tools

• Analyse marketing campaign performance (MMM, attribution, ROI)

• Support commercial strategy through segmentation and customer insights

What We’re Looking For

• Strong SQL and data visualisation skills (e.g. Tableau, Power BI)

• 3+ years in marketing or commercial analytics

• Experience with campaign analysis and business performance insight

• Excellent communication and stakeholder management

• Bonus: Python experience or a consulting background

Why Join?

• Join a data-rich, insight-driven organisation with a strong ethical mission

• Work within a team of 16 data professionals, reporting to a senior leader with 1 direct report

• Exposure to both operational and strategic analytics challenges across international markets

Benefits

• 25 days holiday + bank holidays (with option to buy more)

• Discretionary bonus scheme

• Matched pension contributions (up to 4%)

• Life assurance

• Free on-site parking & subsidised canteen

• Staff perks & discount scheme (tech, retail, lifestyle)

• Free Christmas gift (turkey or voucher)

Interview Process

• Stage 1: Video interview with VP of Data

• Stage 2: In-person interview with senior leadership

• Stage 3: Stakeholder interviews (cross-functional assessment)

• Includes verbal and numerical reasoning assessments

If you’re ready to turn data into business value – apply today.

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Performance Marketing Manager (B2C, Scale-Up)
Remote | Full-Time | £50,000 – £100,000

About the Company

Join a fast-growing global consumer tech scale-up building products that combine entertainment, utility, and AI-driven personalization. With millions of users worldwide and rapid year-over-year growth, scaling their marketing team to drive the next phase of expansion.

Role

• Own and scale a performance marketing channel (Google, Meta, Instagram, or ad networks)

• Manage and optimize $500k-$1M+ in paid media spend

• Run A/B tests, optimize funnels, and iterate on creatives

• Model LTV and subscription growth, make data-driven recommendations

• Report directly to CMO and work in a lean, fast-moving team

Profile

• 3-10 years of hands-on performance marketing experience

• Proven track record in managing high-volume paid media budgets

• Strong analytics focus: subscription models, LTV modeling

• B2C background required (industry flexible)

• Startup/scale-up experience preferred

• Hands-on, data-driven, adaptable

Why Apply

• £50,000 – £100,000 annual salary

• Fully remote, global team

• Direct ownership of channel performance

• Work in a fast-scaling consumer tech company

Hiring Process

• Recruiter screening

• Interview with CMO

• Case study (campaign analysis + recommendations)

• Cultural fit interview

Find out more and apply via the link below.

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Principal Econometrician
Location: West London (Hybrid – 3 days a week in the office)
Salary: Up to £70,000

Ready to make an impact in a dynamic, fast-paced environment? Join a leading media and entertainment brand and take on an exciting opportunity to drive the efficiency of marketing plans through advanced econometric insights.

Role Overview:
As a Principal Econometrician, you’ll play a pivotal role in delivering econometric projects that help optimize business decision-making. You’ll work with key stakeholders to ensure your insights translate into real-world decisions on budget allocations, media planning, and marketing efficiency. If you’re passionate about advanced statistical techniques, media planning, and optimizing commercial strategies, this role is for you.

Key Responsibilities:

• Lead the delivery of econometric projects, ensuring alignment with key business goals and objectives
• Drive the Cross-Portfolio Optimisation process, using econometric insights to inform budget allocations and marketing decisions
• Collaborate with key stakeholders to integrate econometric findings into real-world business decisions
• Partner with consumer strategy teams to enhance the department’s reputation and influence within the company
• Lead the development of new techniques, tools, and processes to improve team efficiency, staying ahead of industry trends

Ideal Candidate:

• Proven experience delivering econometrics projects with an established provider in the industry
• Experience with sizing, allocating, and optimizing media investment decisions in a commercial context
• Passion for using statistical techniques to convert data into actionable recommendations
• Strong understanding of media planning and buying, and knowledge of how optimization techniques inform media strategies
• Advanced Excel skills to manipulate data and optimize based on model parameters
• Self-motivated with the ability to thrive in a fast-paced, dynamic environment
• Experience in developing and upskilling econometrics teams to ensure the use of the latest tools and techniques
• Excellent communication skills with experience delivering results and recommendations that impact commercial decision-making
• Strong organizational and time management skills to manage multiple tasks and priorities effectively
• Knowledge of Python is desirable

The Benefits:

• Up to £70,000 + benefits
• Hybrid
• West London (x3 days a week)

How To Apply:

If interested in the role please send your CV to Jordan Victor via the Apply Link below

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Senior Data Analyst – Dating App

Location: London (Hybrid)
Salary: £55,000 – £60,000

We are looking for a Senior Data Analyst to join our fast-growing dating product team. In this role, you’ll drive insights that directly shape product strategy, user experience, and feature development.

Key Responsibilities

• Own analysis of key dating funnel metrics (sign-ups, matches, retention, conversions).

• Build dashboards to track engagement and performance across markets.

• Design and analyse A/B tests to validate new product features.

• Provide clear insights that influence product, marketing, and leadership decisions.

Ideal Candidate

• 8+ years’ experience in data analytics, ideally in consumer apps or online platforms.

• Proficiency in SQL, Python, and BI tools (Tableau, Looker, Power BI).

• Experience working with subscription, engagement, or conversion funnel data.

• Strong communicator, able to present complex findings in simple, actionable ways.

Find out more and apply via the link below.

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Proposition & Performance Manager – Insurance Aggregators

£40,000-£50,000 + Benefits | Central London (Hybrid: 1-2 days in office)
Aggregator Strategy | Product Insight | High-Growth Environment

An exciting opportunity to take ownership of aggregator partnerships and shape product performance within a growing, well-backed insurance provider. If you’re commercially driven and love working cross-functionally to make change happen – this one’s worth a look.

THE COMPANY
This is a lean, agile business in the insurance space with strong backing and big growth plans. They’ve recently restructured their long-term strategy and are now investing in key commercial roles to support scale. The culture is collaborative, down-to-earth, and fast-paced – with a real opportunity to make your mark.

THE ROLE
This is a newly created position sitting within the Commercial team, reporting directly into a high-impact leader who’s seen rapid progression themselves. You’ll play a key role in developing new aggregator relationships and optimising product performance.

Key responsibilities:

• Lead relationships with third-party aggregators and comparison platforms

• Drive onboarding and integration processes

• Analyse product performance and profitability across different channels

• Deliver commercial insight to inform product and partnership strategy

• Work cross-functionally with Claims, Product, and Senior Leadership

WHAT THEY’RE LOOKING FOR

• Experience working with aggregators or comparison partners

• Background in an insurance business, MGA, or comparison platform

• Solid commercial mindset with strong Excel skills

• Confident working cross-functionally and owning external relationships

• Self-starter mindset – comfortable in a fast-moving, evolving setup

WHAT’S IN IT FOR YOU?

• True ownership of a key growth channel

• High visibility with senior leadership

• Part of a business at a critical scale-up moment

• Expenses covered for office travel

• Excellent culture – collaborative, transparent, and ambitious

• Long-term opportunity to evolve and shape the role

INTERVIEW PROCESS

• Initial interview with hiring lead

• Technical/commercial interview

• Final in-person with leadership team

Interested?
This one’s exclusive – apply now or get in touch directly to find out more.

To Apply for this Job Click Here

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Senior Marketing Effectiveness Manager (Maternity Cover) | £75,000-£85,000 + Bonus | Watford Junction | 12-month FTC

Are you a marketing analytics leader with a passion for driving marketing effectiveness through data-driven insights? A leading UK business is seeking a Senior Marketing Effectiveness Manager to join their team on a 12-month maternity cover.

You’ll lead a specialist team of econometricians and work closely with senior marketing, finance, and product stakeholders to optimise multi-million-pound marketing investments. This is a hands-on leadership role blending advanced econometrics with strategic commercial insight to influence key business decisions.

Whether you’re a deep-dive econometrics specialist or a broad marketing analytics generalist, your expertise in translating complex models into actionable marketing strategies will be critical.

Key requirements:

• Proven experience managing marketing analytics or econometrics teams

• Strong commercial focus with excellent stakeholder management skills

• Hands-on expertise in SQL, Python, R and econometric modelling

• Ability to drive marketing investment optimisation through data-driven recommendations

• Experience working cross-functionally across finance, marketing, and analytics teams

Why apply?

• Lead one of the largest marketing budgets in the UK

• Influence strategic marketing investment decisions at senior levels

• Opportunity to innovate and shape marketing measurement tools and processes

• Flexible hybrid working (3 days onsite)

• Competitive salary + bonus

If you’re ready to step into a senior leadership role and deliver measurable marketing impact, apply today.

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Senior Data Analyst – London – £60,000 + Benefits
Hybrid (2-3 days/week in London office)

We’re working exclusively with a global leader in data and analytics, hiring a commercially minded Senior Data Analyst to help optimise how millions of survey responses are matched, priced, and delivered to some of the world’s biggest brands.

This is a high-impact, insight-driven role working across commercial, product, and data science teams to boost performance and revenue. You’ll reverse-engineer models, spot patterns in client and user behaviour, and bring creativity and curiosity to complex, real-world data problems.

What you’ll be working on:

• Pricing and revenue optimisation across large-scale survey operations

• Modelling client and user behaviour to improve performance

• Clustering, regression, and exploratory analysis to uncover insights

• Collaborating cross-functionally to influence decision-making

• Working with Python, SQL, and moving into Azure

What they’re looking for:

• 3-5+ years in analytics (media, ecommerce, or high-volume environments a bonus)

• Confident communicator with strong stakeholder skills

• Curious, commercial thinker who thrives in fast-paced settings

• Strong skills in SQL and Python

London (2-3 days/week hybrid)
£60,000 base + full benefits (no bonus)
❌ No sponsorship available

Want to get involved? Drop your CV now – this is a fast-moving process.

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