Senior Front-end Developer

We are seeking a talented and motivated Senior Front-End Developer to join our dynamic team, so if you are passionate about building high-performance digital platforms, then this could be the next role for you. You will work alongside multi-disciplined teams and clients to strategise and execute visually appealing, responsive, and intuitive experimentation programmes that help our clients drive user engagement, conversions and overall product success. This is a hybrid role based in our Central London office with flexibility to work from home for 3-4 days per week.

We need you to:

• Build and maintain high-quality, scalable front-end applications and user interfaces, ensuring tests are developed precisely to specification, with a keen eye on feasibility and potential impact.
• Enable and manage A/B tests, multivariate tests, and personalisation initiatives from a technical perspective.
• Develop reusable, modular components that support rapid experimentation and iteration.
• Embrace AI-enabled ways of working, using emerging tools and techniques to enhance productivity, experimentation velocity, and problem-solving.
• Integrate with experimentation and personalisation tools (e.g. Optimizely, VWO, Adobe Target).
• Ensure accurate event tracking and data collection for experiments.
• Work closely with product managers, designers, and analysts to execute experimentation strategies.

You’ll be:

• Technical, Analytical & innovative.
• Consultative and strategic in nature.
• Inquisitive, to stay ahead of industry trends in experimentation and developments in AI.
• An advocate for best practices in coding, testing, and deployment.
• Never satisfied with the status quo – always looking to improve and innovate.
• Excellent in front of clients, explaining problems in a simplified manner and presenting your ideas.
• Positive in your attitude to challenges and change.
• A problem finder, solver and fast learner.
• Able to manage multiple projects.
• Detail oriented, ensuring precision and accuracy in all aspects of work.
• Highly agile to challenges and changes with a constructive and optimistic approach.
• Able to connect with our values: respect, collaboration, passion for innovation – to name a few.

You’ll have:

• 5+ years of experience within Development/Engineering and/or 3+ years of experience within Experimentation.
• Extensive experience with experimentation platforms – (Optimizely, Monetate, AB Tasty, Dynamic Yield).
• Proficiency in integrating APIs, third-party libraries, and data visualisation tools.
• Deep understanding of experimentation methodologies and statistical principles.
• Proven experience in consulting or client-facing roles, with strong interpersonal and communication skills.

Nice to have:

• Bachelor’s degree in Computer Science, Web Development, or a related field.
• Experience with Product-led Experimentation/Server-side Experiment would be a bonus.
• Experience of setting up and implementing experimentation and/or analytics platforms.

You’ll get:

• 25 days’ holiday each year.
• An extra day for every year at Creative CX up to a maximum of 5 extra days.
• An additional day off for your birthday after 3 years of service.
• Regular social events and away days, arranged by our social committee.
• Regular coaching, a continuously updated personal development plan and a generous training budget, to help you reach your full potential.
• Company contributory pension scheme.
• Perkbox membership, giving you a wide range of discounts.
• Private Medical Cover.
• Life Assurance.
• Salary Sacrifice Schemes – Cycle to Work and Gym Scheme.
• Charity Payroll – giving before tax.

Please note: we only consider applicants with current legal right to work in the countries in which our positions are based. Creative CX is an equal opportunity employer. Creative CX recruits, employs, trains, compensates and promotes regardless of race, religion, colour, national origin, sex, disability, age, and other protected status as required by applicable law.