Senior Elixir Engineer

Driftrock Limited; United Kingdom; Remote; GBP 60,000 - 80,000; Full time

Job summary

Driftrock Limited is looking for a Senior Elixir Engineer to join a product squad and help build the marketing technology powering vehicle brands. The role focuses on Elixir/Phoenix LiveView, with a pragmatic stack and an emphasis on ship‑to‑production within a small, high‑discipline squad.

You’ll own end‑to‑end feature delivery, collaborate across the engineering team, and contribute to an observable, test‑driven development culture while building robust, scalable services.

Qualifications

• Track record of designing and shipping backend systems in production with relational databases and data modelling.
• Solid grounding in computer science fundamentals: data structures, algorithms, complexity and system behavior.
• Professional experience in Elixir, or deep experience in another backend language with drive to make Elixir main tool.
• Comfort with asynchronous, event-driven systems where several services work on the same data in parallel.
• Experience with web development.
• Interest in multiple stacks; comfortable on Linux and with Docker; curious about other ecosystems.
• Habit of writing tested, maintainable code with focus on continuous delivery, TDD, pairing, code review and retrospectives.
• Ability to use AI tools judiciously, evaluating outputs critically.

Responsibilities

• Build and ship product features in Elixir and Phoenix LiveView from idea to production multiple times a week.
• Design data models and services behind new features and plan safe migrations.
• Work across an event-driven architecture with APIs and RabbitMQ; handle growing data responsibly.
• Write well-tested, maintainable code using TDD and code reviews to maintain quality.
• Mentor other engineers and bring ideas from outside the Elixir ecosystem into the squad.

Skills

Elixir

Backend design

TDD

Pair programming

Event-driven

Education

Computer science degree or equivalent

Tools

Docker

RabbitMQ

PostgreSQL

Redis

Linux

Job description

• Team: Engineering
• Reports to: Engineering Team Lead
• Location: Remote, UK or abroad, with a few hours of daily UK overlap
• Contract: Full time, permanent
• Salary: £60,000 to £80,000, plus share options
• Start date: As soon as we find the right person

Driftrock is hiring a Senior Elixir Engineer to join one of our product squads and help build the marketing technology that powers vehicle sales for some of the world's biggest car brands.

Why this role exists

Driftrock's product runs on a pragmatic Elixir and Phoenix LiveView stack, solving real marketing challenges for our B2B customers. As more of the world's biggest car brands come on board, we're growing our engineering team and the volume of data we process for them. Right now we're building lead qualification across communication channels and bringing it together in our Single Customer View, optimising our event-driven architecture for growing workloads, and expanding into a new vertical where people will use Driftrock day to day. You'll join a small, high-discipline squad, ship to production from your first weeks, and take ownership of substantial features from design through to rollout. You'll work alongside engineers who care about how they build, and you'll have a real say in how the squad works and what it builds.

What you'll be working with

Our platform is a set of Elixir services that talk to each other over APIs and RabbitMQ, store data in PostgreSQL and Redis, and run background work with Oban. The UI is server-rendered with Phoenix LiveView and TailwindCSS. We lean on Extreme Programming, test-driven development and pair programming, plan weekly, and keep a close eye on how the product behaves through observability and data. A small amount of legacy Ruby is on its way to Elixir.

What you'll own

You’ll own the delivery of features within your squad end to end, shipping well-tested, production‑ready Elixir that moves our product and our customers' results forward, and helping set the technical bar for the people around you.

Your first 90 days

By day 30: you've found your feet in our codebase and domain, paired across the squad, and shipped your first changes to production. By day 60: you're picking up substantial features independently, from design to rollout, and taking an active part in technical and product discussions. By day 90: you're a trusted senior member of your squad, shipping regularly, pairing with others to keep quality high, and starting to shape how we approach problems.

What you'll be doing

Build and ship product features in Elixir and Phoenix LiveView, from idea through to production, several times a week. Design the data models and services behind new features, and plan the changes and migrations that take them safely to production. Work across our event‑driven architecture, building services that talk over APIs and RabbitMQ and handling a growing volume of customer data reliably. Write well‑tested, maintainable code using test‑driven development, and use pairing and code reviews to keep quality high across the squad. Help shape the how and the why, bringing your own viewpoint to technical and product discussions and to our roadmap. Use data and observability to understand how your changes behave in production and whether they're delivering value for customers. Share what you know, pairing with and mentoring other engineers and bringing ideas from outside the Elixir ecosystem into how we build.

What you'll bring

A track record of designing and shipping backend systems in production, including relational databases and data modelling, with the judgement to make and stand by technical decisions. A solid grounding in computer science fundamentals, from a degree or equivalent experience: data structures, algorithms, complexity and how systems behave under the hood. Professional experience in Elixir, or deep experience in another backend language and a genuine drive to make Elixir your main tool. Comfort with asynchronous, event‑driven systems, where several services work on the same data in parallel. Experience with web development. Interest in more than one language and stack: you're comfortable on Linux and with Docker, and you like finding out what other ecosystems do well. A habit of writing tested, maintainable code, and a genuine interest in continuous delivery, TDD, pairing, code review and retrospectives. The judgement to use AI tools well: you use them to go faster, and your grounding means you can evaluate what they produce and steer away from suboptimal solutions rather than taking the output on faith.

Bonus points

A background in Ruby or another functional language. Depth in RabbitMQ, PostgreSQL or Redis. Exposure to Kubernetes, Terraform or Google Cloud. Experience mentoring engineers.

Why Driftrock

Driftrock's mission is to become the world‑leading automotive and e‑mobility marketing software platform, and help accelerate the transition to clean transport.