Personalisation Engineer (UK based)

Company: SQLI
Apply for the Personalisation Engineer (UK based)
Location: London
Job Description:

Job Description

We are looking for a Personalisation Engineer who will be focusing on creating onsite personalisation experiences, and Conversion Rate Optimisation (CRO) tests. Working across a diverse portfolio of clients, you will take ownership of building and deploying experiments from brief through to launch, partnering closely with our optimisation and strategy team.

The role is primarily a build-focused position. You will be responsible for translating test hypotheses and design concepts into clean, reliable and performant code, ensuring every experiment is delivered on time, to a high standard and with no adverse impact on site performance.

We drive impact and change by fully understanding and translating data through our solutions.

Key Responsibilities:

  • Build and deploy personalised experience and A/B tests using a variety of testing tools (for example Adobe Target, WebTrends Optimize, Adobe Journey Optimiser) across our client sites.
  • Work closely with our optimisation and UX teams to translate wireframes and hypotheses into accurate, pixel‑perfect test variants.
  • Contribute to quality control processes, such as QA testing and code reviews to ensure all work delivered to our clients is bug free.
  • Stay current with AI tooling and integrate it into your development workflow to improve speed and quality of output.
  • Integrate with third‑party and internal APIs to build dynamic, data‑driven web experiences.
  • Support our optimisation team with designing and developing custom AB tests across our varied clients.
  • Learn multiple languages and latest trends to a professional level and transfer that knowledge across the team.
  • Ensure projects are delivered to high quality standards and contribute to the smooth and successful delivery of each project.
  • Communicate clearly with clients and internal stakeholder alongside the client team.

Qualifications

Experience and Qualifications:

  • 1-2+ years of experience in a front-end development role.
  • Strong competence with web technologies (vanilla HTML, CSS and JS a minimum). React knowledge a bonus.
  • Experience with A/B testing and working in CRO platforms is a plus.
  • Able to write clean, well‑structured production ready code.
  • Knowledge of Git version control.
  • Evidence of dealing well with ambiguity, prioritising needs, and delivering results in a dynamic environment.
  • Strong analytical, organisational, and time management skills as well as an attention to detail.
  • Excellent interpersonal skills – exceptional relationship building skills both with direct team members and stakeholders.

Additional Information

  • Medical and Dental Health insurance
  • Opportunity to gain globally recognised certificates
  • The chance to be part of an amazing global team
  • A fun and collaborative working environment

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Posted: June 1st, 2026