Senior CRO Developer
Syffer is an
- inclusive consulting company focused on talent, tech and innovation. We exist to elevate companies and humans all around the world, making change, from the inside to the outside.
What You'll do
- Develop and implement A/B, multivariate, and personalized experiences using Adobe Target or equivalent tools;
- Translate experimentation briefs into scalable and functional technical solutions;
- Inject
- end code (HTML, CSS, Java
Script) in a controlled manner, ensuring website performance and stability; - Conduct QA/UAT validation across browsers, devices, and user scenarios;
- Diagnose and resolve rendering, flickering, and script conflict issues;
- Manage scripts and triggers through Tag Management Systems (Adobe Launch, GTM, Tealium);
- Collaborate closely with Data, UX, and Marketing teams to continuously improve experimentation workflows;
- Produce clear technical documentation and ensure traceability of all implementations;
- Hybrid Work Model.
What You Are
- Advanced proficiency in Java
Script, HTML5, and CSS3, with strong DOM manipulation skills; - Experience with A/B testing and personalization platforms ideally Adobe Target (Optimizely, AB Tasty, or VWO are also valued);
- Knowledge of Adobe Launch or similar Tag Management Systems;
- Experience debugging with Adobe Experience Cloud Debugger, Chrome Dev
Tools, and Target Trace; - Understanding of segmentation, targeting, events, and conversion tracking;
- Ability to assess technical performance and impact of experiments;
- Basic experience with version control (Git) and coding best practices;
- Strong analytical mindset, autonomy, and ability to manage multiple projects simultaneously;
- Excellent communication skills with
- technical teams (marketing, design, product); - Curiosity about emerging personalization and optimization technologies;
- Fluent in English; experience in agile and collaborative environments is a plus.
What You'll get
- Wage according to candidate's professional experience;
- Remote Work whenever possible;
- Allocation of health insurance from the beginning of the employment;
- Delivery of work equipment adjusted to the performance of functions;
- And others.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Engineering and Information Technology
Industries
IT Services and IT Consulting
Work together with expert teams on projects of large magnitude and intensity, long term together with our clients, all leaders in their industries.
Are you ready to step into a diverse and inclusive world with us?
Together we will promote uniqueness!
- Informações detalhadas sobre a oferta de emprego
Empresa: syffer Localização: Lisboa
Lisboa, Lisboa, PortugalPublicado: 23. 10. 2025
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