Senior Data Engineer

At Trailmix, our players are the reason we exist, and this drives our mission: to create delightful spaces where millions of people can flourish. Our hit game Love & Pies, launched in September 2021, has resonated with millions worldwide and we build free-to-play mobile games that are snackable yet filled with heart, humour, and stories that stick.

We’re a focused and highly collaborative team with a big creative spirit. We believe the best games are made when the people behind them feel inspired, supported, and proud of the work they do.

That’s why our values sit at the heart of how we work, shaping every decision and creative choice we make.

Trailmix Values

• We win as one: Success is shared, and collaboration fuels everything we do because great games are never built solo.
• We are resilient by nature: We adapt and rise stronger each time because every challenge is a chance to evolve.
• We are powered by our players: Every choice begins with them because when our players thrive, so do we.
• We are kind and direct: We speak with honesty and care because clarity and compassion build the trust that makes us better.
• We stay curious and grow: We ask, explore, and learn because curiosity keeps our creativity alive.
• We decide boldly and own fully: We move with courage and conviction because great ideas only matter when we stand behind them.

If you’re excited by meaningful creativity, true collaboration, and making games that bring people joy, you’ll feel right at home here, too.

The Opportunity:

Trailmix is looking for a hands-on Senior Data Engineer to strengthen our data infrastructure across Love & Pies, upcoming games, and Marketing. You’ll ensure our data is reliable, scalable, and actionable. Powering analytics, experimentation, and growth across the company. You’ll work closely with Engineering, Analytics, and Product to build pipelines, integrate new sources, and maintain a modern, efficient data stack that supports millions of player events every day.

The Day to Day

• Design, build, and maintain scalable, low-latency data pipelines using Airflow, Airbyte, dbt, and BigQuery.
• Ingest, transform, and model gameplay, telemetry, and marketing data from multiple sources to create reliable, analytics-ready datasets.
• Ensure data quality and reliability through automated checks, tests, monitoring, and SLAs.
• Optimise warehouse performance, cost, and reliability within GCP, ensuring efficient data access at scale.
• Develop and maintain ELT models to power analytics, A/B testing, and player segmentation.
• Collaborate with game engineers on event tracking schemas and ingestion logic.
• Partner with analysts and data scientists to ensure data is clean, consistent, and well-documented.
• Implement CI/CD automation for data pipelines, including automated deploys and environment promotion.
• Provision and manage infrastructure (Pub/Sub, Cloud Storage, BigQuery, Kubernetes / Cloud Run) using Infrastructure as Code (Terraform) - including secrets management, networking, and cost control.
• Contribute to data governance, access control, and documentation to maintain trust and compliance across projects.
• Support self-serve analytics and reporting capabilities across teams.
• Collaborate on ML automation, supporting the data science team in automating key steps of the machine learning lifecycle.

About you

• Extensive experience in data engineering or related infrastructure roles.
• Strong command of Python and SQL for data transformation and automation.
• Expertise in BigQuery, Airflow, Airbyte, and dbt, or equivalent modern data tools.
• Knowledgeable in data governance, CI/CD, and observability tools (e.g., Datadog, Bugsnag).
• Solid understanding of ETL/ELT design, event-driven systems, and pipeline orchestration.
• Experience with GCP (or AWS/Azure equivalents) and marketing/telemetry APIs.
• You take pride in being a meticulous validator - bringing consistency, reliability, and trust to our data, ensuring integrity, scalability, and performance across all systems.
• Clear, practical communicator who collaborates across disciplines.

Bonus

• Familiarity with Omni, Looker, or similar BI tools.
• Experience supporting mobile or F2P games and live operations data.
• Knowledge of A/B testing, player segmentation, or game economy telemetry.
• Understanding of GDPR/compliance considerations in handling player data.

That means we’re looking for someone who:

• Builds impact through collaboration: You know the best work comes from shared perspectives and collective wins.
• Grows stronger through challenges: You adapt, stay positive, and help others find a way forward when things get messy.
• Keeps players at the heart of decisions: You design, create, and problem-solve with empathy, knowing players are our why.
• Communicates with clarity and care: You give feedback that builds trust, and you listen openly so ideas can flourish.
• Stays curious and lifts others up: You experiment, learn quickly, and share your discoveries generously, raising the bar for the whole team.
• Moves with courage and ownership: You make bold calls when it matters, and you stand by them with accountability.

We are a Hybrid Studio

We work from our Kings Cross studio together three days a week ( Monday, Thursday, and Friday), because we believe great games (and great teams) are built through genuine collaboration.

These days are focused, energised, and designed for impact:

• We solve problems faster
• We share ideas in the moment
• We drive decisions that move us forward

This rhythm helps us deliver our best work not just for each other, but for our players. It’s how we build momentum, grow together, and stay ahead in a fast-moving industry.

Our Benefits

• Investing in Your Growth: Unleash your potential with our generous development budget. After completing your three-month probation, all team members receive a £1,000 allowance to fuel their professional growth each year.
• Fueling Your Day: Our kitchens are fully stocked with delicious treats and drinks, and we provide breakfast and lunch supplies to keep you energised throughout the day.
• Building Connections: Join us every Friday for a team lunch. A chance to connect and recharge for the week ahead.
• Planning for Your Future: Take control of your financial future with our contributory pension scheme. Plus, enjoy the added benefit of tax-free contributions.
• Unlocking Ownership: As a valued team member, you'll have the opportunity to own a stake in our success.
• Caring for Your Wellbeing: Your health is our priority. Enjoy peace of mind with our fully comprehensive private medical care, with premiums paid by Trailmix. Plus, access mental health support 24/7 with the Spill Mental Health App.
• Time to Recharge: Our holiday allowance allows you to take a well-deserved break. You'll enjoy 28 days of annual leave, including three company holiday days around Christmas.
• Surprise and Delight: We want you to feel appreciated and valued with various gifts throughout the year and events, from team outings to themed parties.
• Setting You Up for Success: Receive a £250 work-from-home budget to ensure you have the proper home setup to perform at your best.

Our Inclusive Culture

Trailmix was founded to make a positive impact on our players, our community, and our colleagues. We’re committed to creating an inclusive culture where everyone can flourish and feel seen.

We believe it’s vital that players see themselves represented in the games they play; and in Love & Pies, we celebrate the beautiful diversity of life. The stories, characters, and relationships in our games reflect the people we are and the people we love.

We’re always excited to welcome more people who share our passion for designing games that truly include everyone.