Senior Consultant

GAIN

full-time

Posted on: 10/3/2025

Location Type: Hybrid

Location: London • 🇬🇧 United Kingdom

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Job Level

Senior

About the role

Drive & own the experimentation strategy for assigned client accounts, ensuring structured, data-driven approaches to testing and optimization while keeping the Principal informed and securing sign-off on key decisions.
Leverage all relevant frameworks and tools within Conversion’s experimentation toolkit, selecting the right methodologies to drive performance for each client.
Work closely with the delivery team to ensure experiments are executed efficiently, troubleshooting potential roadblocks and maintaining alignment on priorities.
Oversee the development of research deliverables where experiments are not the immediate outcome, ensuring insights are clearly structured and presented to drive client decision-making.
Conduct and facilitate bi-annual strategy reviews, ideation sessions, and other key workshops to ensure continued program maturity and alignment with business objectives.
Ensure experimentation insights and research findings are communicated effectively, crafting compelling narratives that reinforce business value and influence client decision-making.
Take ownership of the overall performance of assigned accounts, ensuring experimentation programs drive measurable impact and align with client business objectives.
Contribute to uncovering the client’s bigger picture—gaining a deep understanding of their business objectives, challenges, and expectations beyond experimentation to ensure alignment with their broader goals.
Lead strategic discussions on client objectives, challenges, and expectations for their experimentation program, ensuring we recommend the right solutions—whether experiments, research initiatives, or other evidence-based approaches.
Identify and shape commercial opportunities within accounts, ensuring experimentation and research support client growth and long-term success.
Act as a trusted advisor to clients, fostering strong relationships, driving program maturity, and positioning experimentation as a critical business function.
Ensure alignment with the Principal Consultant on all strategic, big-picture, and commercial decisions.
Mentor and support Consultants, providing guidance on experimentation methodologies, strategic thinking, and client management to enhance their effectiveness.
Facilitate structured knowledge-sharing initiatives, ensuring insights from client work are documented and leveraged for broader team learning.
Support the Director of Experimentation and Principal Consultants in upskilling the team by delivering training sessions and fostering a culture of continuous development.
Provide regular coaching and structured performance feedback, ensuring Consultants have clear development pathways and the support needed to progress in their roles.
Develop deep expertise in Conversion (but not limited to) experimentation methodologies, ensuring mastery of frameworks, statistical principles, and strategic tools to drive high-impact testing programs.
Drive innovation in experimentation methodologies, contributing to internal discussions on best practices and evolving strategies.
Contribute to industry thought leadership, including blog content, case studies, or speaking engagements where relevant.
Assist the Director of Consultancy and Sales team in pitches and business development efforts by providing strategic experimentation expertise.

Requirements

Post secondary education degree, preferably in Marketing or Business or equivalent work experience
3+ years experience at an interactive or marketing agency in client management or an in-house client-side digital marketing role.
Direct experience in leading the strategy on successful client projects and/or engagements.
Experience working with external clients and building relationships virtually and in-person
Experience or a working understanding of web & digital A/B testing tools (Adobe Target, Optimizely, VWO, Google Optimize, etc.)
Experience building reports and analyzing data in multiple Digital Analytics platforms (Google Analytics, Adobe Analytics, Heap, Amplitude, Mixpanel, etc.) and other digital research tools such as Content Square, Clarity, Quantum Metrics, Full Story, Hotjar, Clicktale, CrazyEgg etc.
Strong working understanding or direct experience in web development (HTML/CSS/JS) as it relates to experiment feasibility and scoping.
Excellent communication skills (written and verbal) and comfort communicating with clients and prospects at all levels
Ability to manage multiple projects in a fast paced environment
A strong EQ and adaptability in communication style as the situation requires.
Experience in performance management, providing mentorship/leadership to team members, resulting in the success of the team, as well as the individual team member.
Understanding of the different UXR methodologies and their applications
Hands-on experience with advanced testing methodologies such as machine learning, bandit algorithms, and personalization.
Some travel is expected for this position- around 10% of the time

Benefits

Private Medical Insurance
BUPA Life Assurance
Income protection
Employee Assistance Program
Cycle to Work salary sacrifice scheme
Tech & Wearables salary sacrifice scheme
Octopus EV Scheme
Discounts and deals on a range of items from hotels, holidays and hormone testing to cinema, gyms and will writing