"Elevated our technical capabilities"
TopFlight have been an invaluable extension of our team over the past two years. As an experimentation agency, speed and quality are everything and TopFlight consistently deliver both. Their rapid delivery framework and deep engineering expertise have enabled us to build and deploy A/B tests at pace, without compromising on quality. Their developers are embedded directly into our squads and have become a trusted, high-performing part of our operation.
Since bringing them in, we've significantly increased the volume and complexity of A/B tests we can deliver, while also establishing a much stronger development culture. From robust engineering standards to reliable delivery processes, they've helped elevate our technical capabilities across the board.
Scaling experimentation delivery across enterprise clients


Technologies
The tech stack we used to build this project

Optimizely

TypeScript

React

GH workflows

Node.js

Webpack
Project summary
TopFlight became an embedded engineering partner to Creative CX, a UK experimentation agency. Our developers worked directly within its squads, helping the agency deliver more complex A/B tests across enterprise clients and strengthen the practices supporting that delivery.

The problem
As client demand grew, Creative CX needed specialist development capacity to keep experimentation moving. More varied and technically demanding briefs required a partner who understood both rapid test delivery and the standards expected by enterprise clients.

The challenge
Support multiple client websites, testing platforms and stakeholders while keeping implementations consistent. Engineers needed to integrate into existing squads, resolve technical constraints and ensure experiments could be measured and checked before launch.

The services
Specialist TopFlight developers worked alongside Creative CX’s delivery and client teams, introducing structured branching, code reviews and repeatable development workflows. We supported tests end to end with feasibility checks, audience targeting, analytics instrumentation and QA across platforms including Optimizely and Monetate, and built a platform-agnostic Chrome extension to streamline client-side experiment builds.
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