As a Marketing Analytics Specialist at Heliosx Group, your day-to-day activities will directly shape the company's growth strategy. You will be the primary analytical partner for the performance marketing team, providing the insights needed to scale campaigns efficiently.

Your primary responsibilities will include:

• Attribution & Measurement – Designing, maintaining, and improving the proprietary attribution models that determine how marketing budget is allocated across channels like Meta, Google, TikTok, and native networks.
• Cohort & LTV Analysis – Conducting deep-dive analyses on customer cohorts to understand retention patterns, subscription churn drivers, and lifetime value trajectories across different brands.
• Creative Performance Tracking – Building automated dashboards that track the performance of ad creatives, helping the creative production team understand which visual elements drive conversions.
• A/B Testing & Experimentation – Designing and analyzing growth experiments, including landing page tests, pricing tests, and ad account structure changes, ensuring statistical validity.
• Cross-Functional Collaboration – Working closely with data engineering to ensure marketing data pipelines are clean, reliable, and properly integrated into the centralized data warehouse.
• Executive Reporting – Preparing and presenting performance reports for senior stakeholders, translating complex data trends into clear business opportunities.

To be competitive for this position, you must possess a strong blend of technical analytical skills and commercial acumen. The ideal candidate is a self-starter who thrives in an entrepreneurial, fast-paced environment.

Must-Have Skills

• Technical Toolkit – Advanced proficiency in SQL for data extraction and manipulation. High expertise in data visualization tools such as Looker Studio, Tableau, or PowerBI.
• Performance Marketing Knowledge – Deep understanding of digital acquisition channels (paid social, paid search, programmatic) and their native tracking mechanics.
• D2C Metrics Expertise – Mastery of core e-commerce metrics: CAC, LTV, ROAS, AOV, retention rate, and cohort payback periods.
• Numerical Reasoning – Exceptional mathematical skills with the ability to perform rapid mental calculations and spot data anomalies quickly.

Nice-to-Have Skills

• Programming Languages – Experience using Python or R for statistical modeling and predictive analytics.
• Industry Experience – Prior experience working in subscription-based e-commerce, direct-to-consumer (D2C) retail, or the digital health/telehealth sector.
• Web Analytics – Hands-on experience with Google Analytics 4 (GA4) implementation and Google Tag Manager (GTM).

Q: How difficult is the timed numerical test in the interview process? A: Candidates consistently report that the numerical test is highly challenging and fast-paced. It is significantly more difficult than standard online practice tests, requiring rapid calculations and high accuracy under intense time pressure. Dedicated practice is highly recommended.

Q: What is the format of the take-home task presentation? A: You will present your findings from the take-home task to a panel that typically includes the Head of Performance Marketing, a peer analyst, and senior leadership (such as the CEO or business owner). The presentation usually lasts 30 to 45 minutes, followed by a rigorous Q&A session where panel members will actively challenge your assumptions.

Q: Does Heliosx Group offer hybrid or remote working options for this role? A: While specific arrangements can vary by team and location, Heliosx Group typically operates on a hybrid model for its London-based roles, combining collaborative in-office days with remote flexibility.

Q: What is the company culture like during the interview process? A: The process is thorough and demanding. Interviewers will push you to your limits to see how you think under pressure. Successful candidates are those who appreciate direct, data-driven feedback and can defend their analytical choices with logic and humility.

To maximize your chances of securing an offer at Heliosx Group, keep these practical, insider tips in mind:

• Study Their Brand Portfolio: Before your first interview, thoroughly research Heliosx Group's primary brands (such as Dermatica and MedExpress). Understand their target demographics, subscription models, and visible ad creatives on social channels.
• Master the Basics of Subscription Economics: Be prepared to discuss how subscription retention impact affects LTV calculations. Understand the difference between active subscribers, paused subscriptions, and churned accounts.

• Brush Up on GA4 and Meta Attribution: With the ongoing shifts in digital tracking, be ready to discuss how you approach attribution discrepancies between platform-reported data and internal database realities.
• Structure Your Presentation Answers: When presenting your take-home task, start with the high-level business conclusion first, then dive into the data supporting it. Senior leaders value brevity and commercial focus.

• Show Your Passion for Digital Health: Heliosx Group is passionate about transforming healthcare access. Expressing a genuine interest in how technology and data can improve patient outcomes will set you apart from purely technically focused candidates.

The Marketing Analytics Specialist role at Heliosx Group is an exceptional opportunity for a data professional looking to make a measurable impact in a fast-growing, highly analytical D2C environment. The position offers high visibility, direct exposure to executive leadership, and the chance to shape the growth trajectory of leading digital health brands.

To succeed in this process, focus your preparation on mastering direct-to-consumer subscription metrics, practicing timed numerical reasoning tests, and refining your ability to present complex data clearly to non-technical stakeholders. Treat the take-home task as a real-world business challenge, and be prepared to defend your strategic recommendations under constructive questioning from the leadership team.

With dedicated preparation and a structured approach, you can navigate this rigorous process successfully. For more real-world interview insights, detailed company reviews, and preparation resources from candidates who have gone through the process, explore the community-driven databases on Dataford.

The salary data module above provides benchmark compensation insights for analytics professionals in the United Kingdom. When reviewing these figures, keep in mind that total compensation at Heliosx Group may also include performance-related bonuses and benefits aligned with their scaling phase. Use this data to guide your salary expectations during the initial screening call, ensuring your requirements align with the market rate for this level of technical expertise.