data & AI
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Senior Product Analyst
London, Hybrid
Salary up to £80,000

This is a high-impact opportunity for a Senior Product Analyst to shape how data informs product strategy within a purpose-driven, digital platform environment. You will lead on product analytics capability, working closely with cross-functional teams to deliver meaningful insights that directly influence product performance and user experience.

The Company
They are a global organisation supporting businesses to improve transparency, responsibility, and performance across complex operations. Their technology platform enables clients to measure, assess, and enhance key business outcomes through data-driven insights. With a strong focus on innovation and continuous improvement, they are investing further in their product analytics capabilities. The culture encourages collaboration, inclusivity, and professional growth.

The Role

• Lead the development and evolution of product analytics across the platform
• Partner with product, design, and technology teams to deliver actionable data insights
• Define and track success metrics for product features and releases
• Enable teams to measure and optimise performance through data-led decision making
• Own analytics implementation across tools such as Google Analytics and tag management platforms
• Ensure accurate tracking and maintain a scalable, reliable data layer
• Support data engineering workflows, including pipelines into cloud data platforms
• Measure the impact of product changes using experimentation and A/B testing
• Collaborate with stakeholders to scope tracking requirements and identify improvement opportunities
• Build and maintain dashboards and reports to support ongoing product insights
• Act as a mentor and technical lead, supporting the development of analytics best practices

Your Skills & Experience

• Strong commercial experience in product analytics within a digital or technology-led environment
• Hands-on experience with analytics tools such as GA4, Hotjar or similar platforms
• Expertise in tag management, ideally Google Tag Manager
• Experience working with cloud data warehouses such as Snowflake or BigQuery
• Proficiency in data visualisation tools such as Tableau, Power BI, or ThoughtSpot
• Strong understanding of experimentation methods, including A/B testing
• Experience working in agile environments and cross-functional teams
• Analytical mindset with a focus on problem solving and continuous improvement

How to Apply
If you are interested in this Senior Product Analyst role, please submit your application to learn more.

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Senior Account Director
London, Hybrid
Salary up to £65,000

This is an opportunity to step into a senior leadership role where you will shape high-impact customer engagement and CRM programmes for well-known brands. You will have the autonomy to lead strategic client relationships, influence commercial outcomes, and drive meaningful, data-led marketing initiatives within a collaborative and forward-thinking environment.

The Company
They are an established agency specialising in customer engagement, CRM, and data-driven marketing solutions. They partner with a broad portfolio of clients to design and deliver campaigns that build long-term brand loyalty and measurable business impact. Their approach blends creative thinking with data insight to deliver innovative and effective customer experiences. They foster a collaborative culture that values innovation, accountability, and continuous improvement.

The Role

• Lead key client accounts, ensuring strong delivery, growth, and profitability
• Act as both a strategic partner and trusted advisor, shaping client direction and marketing outcomes
• Oversee campaign delivery across CRM channels, ensuring quality, timeliness, and budget adherence
• Identify opportunities to grow accounts and deliver incremental value
• Manage financials including budgets, forecasting, and resource allocation
• Build and maintain strong client relationships across stakeholders
• Lead campaign reviews and optimisation initiatives to improve performance
• Collaborate with cross-functional teams including strategy, data, creative, and development
• Mentor and develop team members, driving performance and engagement
• Translate client briefs into clear campaign strategies and actionable plans

Your Skills & Experience

• Strong commercial experience in an agency-side account leadership role
• Proven ability to manage and grow client relationships at a senior level
• Experience delivering CRM and data-led marketing campaigns
• Understanding of CRM channels such as email, web, app, and push notifications
• Ability to interpret data and apply insights to improve campaign performance
• Strong leadership skills with experience managing and developing teams
• Experience managing budgets, forecasting, and financial performance
• Excellent communication and stakeholder management capabilities

How to Apply
If you are ready to take the next step in your career and lead impactful client relationships, apply now to be considered.

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SEO Manager
London, Hybrid
Salary up to £60,000

This is a unique opportunity to shape how a well-established consumer brand is discovered across both traditional search engines and emerging AI-driven platforms. You will take ownership of organic growth, combining technical expertise with forward-thinking strategy to build a next-generation search function.

The Company
They are a recognised retail and e-commerce organisation with a strong digital presence and a focus on customer engagement. Operating in a fast-paced environment, they bring together creative, commercial, and technical teams to deliver impactful online experiences. With continued investment in digital innovation, they are evolving their approach to search and discoverability.

The Role

• Own and deliver the organic search strategy across multiple websites, driving traffic, engagement, and revenue
• Lead keyword research, technical SEO audits, and on-page optimisation initiatives
• Collaborate with content, digital, and engineering teams to implement best practice SEO improvements
• Monitor rankings, traffic, and conversion performance, identifying growth opportunities
• Stay ahead of algorithm updates and translate changes into actionable strategies
• Develop a Generative Engine Optimisation approach to improve visibility across AI-driven discovery platforms
• Optimise content for AI retrieval, summarisation, and structured visibility
• Define success metrics across SEO and GEO and build reporting frameworks to measure impact
• Work cross-functionally with marketing, e-commerce, and PR teams to enhance brand discoverability

Your Skills and Experience

• Strong commercial experience in SEO or organic growth within a digital or e-commerce environment
• Proven ability to drive measurable improvements in traffic and revenue
• Solid understanding of technical SEO, on-page optimisation, and content strategy
• Experience with structured data, indexing, and crawl optimisation
• Awareness of AI-driven search and emerging generative platforms
• Strong analytical skills with experience using tools such as GA4 and Search Console
• Confident communicator with the ability to influence stakeholders across teams

How to Apply
Apply now to learn more about this opportunity and take the next step in your SEO career.

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Senior Front End Developer (CRO)
London, Hybrid
Salary up to £60,000

This is an opportunity to join a growing experimentation and digital optimisation team where your work directly influences how leading brands improve their online performance. You will play a key role in delivering high quality A B testing solutions, owning experimentation from concept through to implementation while contributing to a collaborative, learning focused environment.
The Company
They are a specialist digital optimisation consultancy focused on combining analytics, SEO, and experimentation to improve user experience and conversion performance. Their work centres on identifying opportunities through data and validating impact through testing. They foster a culture that prioritises innovation, continuous learning, and professional growth. The team is collaborative and values sharing knowledge to deliver meaningful results for clients.
The Role
You will take ownership of building and delivering experimentation programmes, working closely with cross functional teams to create impactful test experiences.

• Build and implement A B tests using HTML, CSS, and JavaScript
• Own the technical design and delivery of experimentation solutions
• Configure and manage tests within platforms such as Optimizely, VWO, or AB Tasty
• Collaborate with analysts, designers, and strategists to translate ideas into live experiments
• Ensure robust QA processes and maintain clear documentation
• Act as a technical point of contact for clients and internal stakeholders
• Contribute to best practices and support continuous improvement across the team
• Mentor and support junior developers where required

Your Skills and Experience

• Strong commercial experience in front end development using HTML, CSS, and JavaScript
• Hands on experience with CRO and experimentation platforms such as Optimizely, VWO, AB Tasty, or similar
• Ability to design, build, and troubleshoot experimentation solutions
• Experience working in client facing or multi stakeholder environments
• Strong problem solving skills with attention to detail
• Ability to manage multiple projects and communicate technical concepts clearly

How to Apply
If this sounds like the right next step in your CRO and front end development career, apply now to learn more.

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Head of Engineering – eCommerce

Location: Mountain View, CA (3 days/week on site minimum)

Compensation: $300,000-$325,000 base + bonus + RSUs

About the Company

Harnham is partnering with a Fortune 500 leader in cybersecurity and digital trust, combining the scale of a global enterprise with the agility of a startup culture. The company protects hundreds of millions of users worldwide, boasts best-in-class retention, and maintains an unwavering commitment to innovation.

Its platform processes over half a million telemetry events per second, and following a major fintech acquisition in 2025, the organization has significantly expanded its footprint in New York City.

The Role

They are looking for a Head of eCommerce Engineering to oversee a growing global engineering team of 20+ professionals. This is a highly visible, reporting directly to the executive team and partnering with the C-suite.

Key responsibilities include:

• Lead architecture and technical direction for global eCommerce platforms, modernizing legacy Java systems into AI-enabled solutions
• Oversee checkout, billing, subscriptions, payments, and third-party payment integrations at global scale
• Drive cloud and database modernization strategies, including Azure/AWS and OracleDB migration planning
• Provide hands-on architectural guidance, influence AI adoption, and elevate engineering capabilities across teams
• Partner with senior engineers, architects, and cross-functional leaders to improve scalability, reliability, and engineering practices while challenging legacy approaches

Ideal Candidate Profile

• 12+ years of experience preferred, with expertise in large-scale eCommerce, payments, platform modernization, and AI-assisted system design
• Background in high-scale consumer platforms and leading legacy-to-modern transformation initiatives
• BS in Computer Science or related field required; MS preferred
• Strong Java backend, system architecture, and cloud experience (Azure required, AWS a plus)
• Experience with commerce platforms, React, code/architecture reviews, and leading global engineering teams
• Proven ability to influence technical direction and challenge legacy approaches with credibility
• Preferred experience in payments, subscription billing, AI-driven modernization, OracleDB migrations, and cybersecurity/fintech domains

BENEFITS

The compensation package contains a base salary, bonus, RSUs and a comprehensive benefits package.

HOW TO APPLY

Please register your interest by sending your CV via the Apply link on this page.

KEY TERMS

Software Engineering | Leadership | eCommerce | Engineering | Fintech | Customer | Customer-Facing | Direct-to-Consumer | B2C | Product | Production | Real Time | Director | Regulation | Payments | Compliance | Regulatory | Startup Environment | Executive | Scale | Scaling | Artificial Intelligence | Java | Billing | Real-Time

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Senior Analytics Engineer

Location: Costa Mesa, CA
Work Model: Hybrid (4 days onsite)
Compensation: $170,000 – $190,000 base + equity + benefits

About the Role

This role is for builders who think in systems – not dashboards.

You’ll define and own the core data layer that represents how the business actually operates. That means modeling real-world domains into structured, reusable systems that power decision-making, workflows, and internal applications across the company.

This is closer to data product engineering than traditional analytics. You’ll work across domains, partner directly with leadership, and turn messy operational reality into clean, scalable data models that others build on top of.

If you’ve ever wanted to move beyond reporting and build foundational systems that drive a company forward, this is that role.

Key Responsibilities

• Own and build domain-level data models that act as the source of truth across the business
• Design and maintain reusable, extensible data layers that scale across teams and use cases
• Build end-to-end data systems – ingestion, transformation, and serving layers
• Develop data products and internal applications, not just dashboards
• Partner with leadership and cross-functional teams to define how the business is measured and operated
• Drive data platform architecture and roadmap decisions
• Establish engineering best practices across testing, version control, and CI/CD for data
• Improve data reliability, governance, and accessibility at scale
• Identify and solve high-impact problems through better data modeling and system design

Must Haves

• 5+ years in Analytics Engineering, Data Engineering, or similar with strong engineering fundamentals
• Deep expertise in SQL and solid experience with Python (or similar)
• Proven track record building scalable, reusable data models used across an organization
• Hands-on ownership of data pipelines and transformation layers (dbt or equivalent)
• Experience with modern cloud data platforms (Snowflake, Redshift, BigQuery, etc.)
• Strong understanding of data modeling, schema design, and data quality systems
• Demonstrated end-to-end ownership of data systems in production environments
• Comfortable operating in fast-moving, ambiguous environments
• Strong communication skills with the ability to influence non-technical stakeholders
• Eligible to obtain and maintain a U.S. security clearance

Why Join

• Build core systems that define how the business runs, not just how it reports
• High ownership and autonomy – you will shape the data layer end-to-end
• Work on complex, high-stakes problems where data directly impacts real-world outcomes
• Join a team that values technical depth, speed, and systems thinking
• Opportunity to influence data platform architecture at scale
• Collaborate with highly capable engineers, operators, and product leaders
• Environment built for people who want to own, build, and move fast

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Senior Account Director
Bristol or London (Hybrid)
Up to £70,000
This is a standout opportunity for a Senior Account Director to take ownership of a flagship CRM account within a fast-growing, data-led agency environment. You will play a key role in shaping strategy, leading delivery, and influencing senior stakeholders on high-impact campaigns for well-known consumer brands.
The Company
They are a specialist CRM and customer engagement agency with a long-standing presence in the market. Known for combining data, technology, and creativity, they partner with leading consumer brands to deliver highly effective, insight-driven campaigns. Following a recent acquisition by a global network, they are entering a new phase of growth with increased investment, new international clients, and expanded capabilities. Despite this, they retain a collaborative and close-knit culture.
The Role

• Take ownership of key CRM client accounts, leading both strategic direction and day-to-day delivery
• Act as the senior client partner, building trusted relationships with stakeholders and identifying growth opportunities
• Lead complex, high-volume CRM programmes including campaign planning, execution, and optimisation
• Collaborate with cross-functional teams across strategy, data, creative, and delivery
• Oversee account financials including budgeting, forecasting, and revenue performance
• Guide and develop junior team members, fostering a high-performance culture
• Drive continuous improvement through post-campaign analysis and insight-led recommendations

Your Skills and Experience

• Strong commercial experience within an agency environment, working on CRM or data-led accounts
• Proven ability to lead large, complex client relationships and deliver strategic campaigns
• Deep understanding of CRM principles including lifecycle marketing and multi-channel engagement
• Exposure to marketing technology platforms such as Braze or similar tools
• Strong stakeholder management skills, with the ability to influence at a senior level
• Experience managing and developing teams within a client services environment
• Comfortable operating in a fast-paced, delivery-focused setting

What They Offer

• Competitive salary up to £70,000
• Flexible hybrid working with limited office travel required
• Opportunity to lead a flagship account with significant strategic impact
• Exposure to globally recognised consumer brands
• Backing of an international network while maintaining an agile agency culture
• Clear opportunities for progression as the business continues to grow

How to Apply
Submit your CV to apply for this Senior Account Director role and find out more about the opportunity.

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Senior Full stack Engineer

£80,000 – £100,000

Hybrid – London (3x days per week)

This is a high-impact engineering role within a small, specialist team responsible for accelerating product development across a growing data organisation. You will work at the cutting edge of AI-enabled engineering, building prototypes, tools, and platform components that turn complex data into usable products at speed. If you enjoy autonomy, rapid delivery, and solving ambiguous problems, this role offers immediate visibility and meaningful technical ownership.

The Company

They are a data focused organisation bringing together multiple specialist businesses, each with its own technology stack and domain expertise. Their central technical team is responsible for unifying systems, modernising legacy platforms, and building AI-enabled capabilities that can be leveraged across the group. The environment is highly collaborative, delivery-focused, and driven by experimentation and measurable outcomes.

The Role

You will sit within a small, high-performing technical core, working closely with senior engineering leadership to deliver rapid, tangible results.

• Build internal AI agents and tools that improve productivity and unlock value from group data
• Develop prototypes that validate ideas quickly and can be demonstrated on a weekly basis
• Modernise legacy systems using AI-assisted analysis and development approaches
• Wrap existing systems with clean, scalable APIs to enable wider consumption
• Generate documentation, tests, and migration tooling to support platform evolution
• Contribute to shared data and entity platform development across the organisation
• Continuously improve code quality, leaving systems clearer and more maintainable

Your Skills and Experience

• Strong commercial experience delivering software in fast-paced environments
• Hands-on development capability across Python, TypeScript, and SQL
• Comfortable working with modern AI tooling and agent-based development workflows
• Experience working with data systems, including schema design, data quality, or lineage
• Ability to understand and work across unfamiliar codebases effectively
• Clear communication skills, including writing high-quality pull requests and presenting work
• A proactive, self-directed approach with a focus on delivering outcomes quickly

What They Offer

• Competitive base salary
• Flexible working options across London and remote environments
• High levels of autonomy and ownership from day one
• Exposure to complex data systems and AI-driven engineering challenges
• Opportunity to work in a small, high-impact team with visible output
• Clear progression as the team and platform scale

How to Apply

Apply with your CV to find out more about this AI-Native Software Engineer opportunity. Please note we cannot offer sponsorship for this position

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