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For Companies At a Glance
- Tasks: Drive conversion performance through hands-on CRO and experimentation in a dynamic digital environment.
- Company: A leading digital marketplace with a tech-driven culture and global reach.
- Benefits: Competitive day rate, fully remote work, and a chance to make a real impact.
- Other info: Exciting opportunity for growth in a mature, innovative company.
- Why this job: Join a fast-paced team and see your work directly influence commercial success.
- Qualifications: Strong front-end development skills with a focus on CRO and data-driven optimisation.
This is a high-impact CRO Developer contract where you will play a pivotal role in accelerating experimentation and conversion performance across a well-established digital product. The project is ideal for someone who thrives in hands-on environments, can move quickly from insight to implementation, and wants to see a direct link between their work and commercial outcomes.
The Company
They are a digital-first marketplace operating in a highly competitive consumer space, with a strong technology-led culture and an established international presence. The business has reached a mature stage of growth and is now heavily focused on optimisation and revenue performance. With distributed engineering teams and a strong product mindset, they prioritise experimentation, data-driven decision-making, and rapid iteration.
The Role and Deliverables
- Own and deliver a CRO and experimentation roadmap across web and digital touchpoints.
- Design, build, and implement A/B and multivariate tests using modern experimentation platforms.
- Work hands-on with front-end code to deploy experiments in a React and Next.js environment.
- Partner with product, engineering, and analytics teams to identify and prioritise high-impact tests.
- Analyse experiment performance using web analytics tools and translate results into actionable insight.
- Contribute new ideas and optimisation opportunities across the wider customer journey, including non-web channels where relevant.
Your Skills & Experience
- Strong experience as a front-end developer with a focus on CRO and experimentation.
- Proven capability working in data-led optimisation or experimentation environments.
- Deep understanding of web analytics and experiment measurement, including tools such as GA4 or similar.
- Hands-on experience with CRO platforms such as VWO, Optimizely, GrowthBook, or equivalent.
- Comfortable operating in fast-paced, hands-on teams with minimal onboarding.
- Background in agency, marketplace, or high-growth digital businesses is highly relevant.
How to Apply
If you are a CRO-focused front-end developer looking for a strategic, hands-on contract with clear commercial impact, please apply with your CV.
Developer React (m/f/d) in London employer: Harnham - Data & Analytics Recruitment
Contact Detail:
Harnham - Data & Analytics Recruitment Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Developer React (m/f/d) in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in online communities. You never know who might have the inside scoop on a job opportunity that’s perfect for you.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best work, especially any CRO or experimentation projects. This will give potential employers a taste of what you can do and how you can contribute to their team.
✨Tip Number 3
Prepare for interviews by practising common questions and scenarios related to CRO and front-end development. Be ready to discuss your past experiences and how they relate to the role you’re applying for.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are proactive about their job search!
We think you need these skills to ace Developer React (m/f/d) in London
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights your experience with CRO and experimentation. We want to see how you've used data to drive decisions and optimise performance, so don’t hold back on those details!
Showcase Your Skills: When you apply, emphasise your hands-on experience with React and Next.js. We’re looking for someone who can jump straight into the code, so let us know about your relevant projects and achievements.
Be Data-Driven: Since we value data-led decision-making, include examples of how you've analysed experiment performance in the past. Share any tools you've used, like GA4 or CRO platforms, to show us your analytical chops.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for this exciting opportunity!
How to prepare for a job interview at Harnham - Data & Analytics Recruitment
✨Know Your Tech Stack
Make sure you’re well-versed in React and Next.js, as these are crucial for the role. Brush up on your front-end development skills and be ready to discuss specific projects where you've implemented A/B tests or worked with CRO platforms.
✨Showcase Your Analytical Skills
Be prepared to talk about how you've used web analytics tools like GA4 in past projects. Highlight any experience you have in translating data into actionable insights, as this will demonstrate your ability to drive optimisation and performance.
✨Demonstrate a Hands-On Approach
Since the role requires a hands-on mentality, share examples of how you've quickly moved from insight to implementation in previous roles. Discuss your experience working in fast-paced environments and how you thrive under pressure.
✨Collaborate and Communicate
This position involves partnering with various teams, so be ready to discuss how you’ve successfully collaborated with product, engineering, and analytics teams in the past. Emphasise your communication skills and how they’ve helped you achieve high-impact results.