[Hiring] Load Test Engineer @Magic Media

Role Description

Cyrex, a Magic Media company, is a media and tech start-up powered by creativity and innovation. We work with leading developers and publishers in the games industry, providing support and solutions designed around individual needs and carried out by global experts.

Load testing is one of the things we’re best known for. Studios and platform teams come to us ahead of a launch, major release, or marketing push, the point where years of work suddenly meets a very large number of simultaneous users, with no opportunity for a second attempt. Our job is to simulate that moment before it happens, find what breaks, understand why, and work alongside the customer to fix it.

We do this using a load-testing platform we built ourselves. It’s mature, proven, and already in production. Part of your role will be keeping it that way:

• Maintenance
• Bug fixes
• Dependency and infrastructure upgrades
• Targeted improvements when an engagement requires them

The platform spans a Go backend, two React frontends, and AWS infrastructure capable of spinning up enough load generation to put serious systems under real strain. The larger part of this role is the load testing itself.

That starts with test engineering:

• Designing scenarios that accurately model how real users behave
• Implementing them in Python against whatever protocols the customer’s system happens to use

It also means working directly with customers:

• Agree on what we’re trying to prove
• Build the scenario
• Run the test
• Analyse the results together
• Identify the bottleneck
• Make changes and go again

You’ll be part of those sessions and, as you grow into the role, expected to lead them. This role sits somewhere between software engineering, performance engineering, systems analysis, and technical delivery, and you need to be comfortable moving between all four.

Qualifications

• 4+ years of software engineering experience, with meaningful ownership of what you shipped
• Strong Python skills; this is the core language for the role
• Hands-on cloud experience, ideally with AWS, including infrastructure as code and containers
• Enough breadth to confidently maintain a typed backend and React frontend you didn’t originally build
• A practical understanding of distributed systems and their failure modes
• Excellent spoken and written English
• Experience with performance or load-testing tools such as Locust, k6, JMeter, Gatling, or tooling you’ve built yourself is a strong advantage
• Experience with games, real-time systems, or high-traffic consumer platforms is also useful, but not required

Requirements

• You write strong Python and are comfortable working in Go, TypeScript, Terraform, and AWS as the situation demands
• You’re comfortable working in codebases you didn’t write
• You find systems under stress interesting and can dig through metrics, traces, logs, and application behaviour
• You can communicate technical reasoning clearly to customers
• You’re pragmatic about the less glamorous parts of performance engineering

Benefits

• Opportunity to work on systems behind products used by very large numbers of people
• A role that combines hands-on engineering, deep technical problem-solving, and customer delivery
• Real ownership of a mature load-testing platform with the freedom to improve it
• Room to grow with Cyrex, including opportunities to lead larger engagements and deepen technical ownership
• Direct contact with engineering teams and the opportunity to become a trusted technical counterpart
• Direct access to founders and leadership, with decisions made in days rather than quarters
• Competitive compensation with straightforward, regular reviews
• A small, multicultural team where your contribution is visible