Senior Data Engineer

HeliosX Group
City of London
3 weeks ago
Create job alert

Ready to revolutionise healthcare, making it faster and more accessible than ever before?
How we started:

Back in 2013, our founder Dwayne D’Souza saw an opportunity to give people faster and more convenient access to medications using technology. We've grown rapidly since our inception, without any external funding whatsoever – achieving profitability through innovation and a highly disciplined approach to growth.

Where we are now:

We’ve earned the trust of millions of people worldwide through our top-selling products and well-known brands: MedExpress, Dermatica, ZipHealth, RocketRX, and Levity. A lot of our success is down to having our own pharmacies, manufacturers and products – spearheaded by leading in-house medical teams, researchers and pharmacists. Between 2023 and 2024 our global revenue tripled; £60m to £180m (300% year-on-year growth). We're looking to do the same in 2025; move into new territories, and further accelerate our growth journey. There’s never been a more exciting time to join HeliosX.

Where we’re going:

Over the next five years, you’ll support our goal to become a world‑leading healthcare partner, deepening our customer relationships, expanding into new countries, and diversifying our product portfolio to treat more conditions. You’ll be part of helping more people access prescription treatments and, most importantly, making personalised care better, quicker and easier for everyone.

Come be a part of making our dream of easier and faster healthcare a reality!

About the role: The Senior Data Engineer will be instrumental in scaling our data capabilities as the company grows. You will focus on building robust data infrastructure that supports data quality, accelerates product engineering initiatives, and enables the development of new data products for external customers. This role requires you to take ownership, drive technical strategy, and mentor junior/mid‑level Data Engineers.

What you'll be doing:

  • Design and Build Enterprise‑Scale Pipelines: Lead the design and implementation of complex, end‑to‑end batch and streaming data pipelines, including advanced transformation logic and multi‑source data integration.
  • Implement MLOps and Feature Stores: Build infrastructure for end‑to‑end ML pipelines, including feature engineering, model deployment, monitoring, and designing feature stores for both batch and real‑time ML workflows.
  • Establish DataOps Practices: Set up CI/CD, automated testing, deployment, and monitoring frameworks for data pipelines, managing infrastructure as code, and ensuring comprehensive pipeline observability.
  • Technical Leadership: Influence engineering architecture across multiple product squads, establish data engineering practices, and mentor junior/mid‑level data engineers within the organization.
  • Ensure Data Governance and Quality: Establish data governance frameworks, build automated data quality systems, and maintain reliability and compliance across distributed systems.
  • Optimize Performance and Resources: Continuously optimise compute and storage resources and deliver improvements in pipeline performance and cost efficiency.

Who you are:

  • 5+ years of specific experience with modern data stack tools, with a proven track record of delivering end‑to‑end data solutions.
  • Expert proficiency in key technologies: Snowflake, SQL, Python, dbt and familiarity with MLflow.
  • Demonstrated understanding of end‑to‑end data product architecture.
  • Ability to deliver working solutions from a greenfield level.
  • Data Platform Skills: Experience architecting data platforms handling high event volumes (100M+ events/day), with expertise in designing for high availability and fault tolerance.
  • Product Team Integration: 3+ years of experience embedded within product engineering teams as a data platform expert, designing architecture that scales with rapid product development.
  • Mindset: Proactively learning and adopting new tools, including AI adoption.

Why work with us? At HeliosX, we want to improve healthcare for everyone, and to do this we need a team of brilliant people who share that ambition. We are currently a diverse team of engineers, scientists, clinical researchers, physicians, pharmacists, marketeers, and customer care specialists committed to our mission – but we need more talented folks to join us, if we want to achieve our global ambitions!

Aside from working with our all‑star team, here are the other benefits of coming on board:

  • Generous equity allocations with significant upside potential
  • 25 Days Holiday (+ all the usual Bank Holidays)
  • Private health insurance, along with extra dental and eye care cover
  • Enhanced parental leave
  • Cycle‑to‑work Scheme
  • Electric Car Scheme
  • Free Dermatica and MedExpress products every month, as well as family discounts
  • Home office allowance
  • Access to a Headspace subscription, discounted gym memberships, and a learning and development budget (alongside a free Kindle and audible subscription)


#J-18808-Ljbffr

Related Jobs

View all jobs

Senior Data Engineer

Senior Data Engineer

Senior Data Engineer

Senior Data Engineer

Senior Data Engineer

Senior Data Engineer

Subscribe to Future Tech Insights for the latest jobs & insights, direct to your inbox.

By subscribing, you agree to our privacy policy and terms of service.

Industry Insights

Discover insightful articles, industry insights, expert tips, and curated resources.

How Many Machine Learning Tools Do You Need to Know to Get a Machine Learning Job?

Machine learning is one of the most exciting and rapidly growing areas of tech. But for job seekers it can also feel like a maze of tools, frameworks and platforms. One job advert wants TensorFlow and Keras. Another mentions PyTorch, scikit-learn and Spark. A third lists Mlflow, Docker, Kubernetes and more. With so many names out there, it’s easy to fall into the trap of thinking you must learn everything just to be competitive. Here’s the honest truth most machine learning hiring managers won’t say out loud: 👉 They don’t hire you because you know every tool. They hire you because you can solve real problems with the tools you know. Tools are important — no doubt — but context, judgement and outcomes matter far more. So how many machine learning tools do you actually need to know to get a job? For most job seekers, the real number is far smaller than you think — and more logically grouped. This guide breaks down exactly what employers expect, which tools are core, which are role-specific, and how to structure your learning for real career results.

What Hiring Managers Look for First in Machine Learning Job Applications (UK Guide)

Whether you’re applying for machine learning engineer, applied scientist, research scientist, ML Ops or data scientist roles, hiring managers scan applications quickly — often making decisions before they’ve read beyond the top third of your CV. In the competitive UK market, it’s not enough to list skills. You must send clear signals of relevance, delivery, impact, reasoning and readiness for production — and do it within the first few lines of your CV or portfolio. This guide walks you through exactly what hiring managers look for first in machine learning applications, how they evaluate CVs and portfolios, and what you can do to improve your chances of getting shortlisted at every stage — from your CV and LinkedIn profile to your cover letter and project portfolio.

MLOps Jobs in the UK: The Complete Career Guide for Machine Learning Professionals

Machine learning has moved from experimentation to production at scale. As a result, MLOps jobs have become some of the most in-demand and best-paid roles in the UK tech market. For job seekers with experience in machine learning, data science, software engineering or cloud infrastructure, MLOps represents a powerful career pivot or progression. This guide is designed to help you understand what MLOps roles involve, which skills employers are hiring for, how to transition into MLOps, salary expectations in the UK, and how to land your next role using specialist platforms like MachineLearningJobs.co.uk.