React Engineer focusing on responsive UI development for AI - powered resource planner. Collaborating with teams in - person at the Lisbon office, contributing to a dynamic work environment.
About the role
- Web Developer with strong HTML/CSS/JavaScript skills building client-side A/B test variations. Collaborates in a hybrid environment within a team of global CRO experts.
Responsibilities
- Build client-side experiments to exact specification using HTML, CSS, and JavaScript
- Work with experimentation platforms to implement and deploy tests
- Oversee and conduct final reviews to ensure experiment designs are being followed and coding standards are maintained
- Review code from other developers in the development team
- Prioritise and fix bugs promptly
- Perform technical evaluations to determine if testing scripts will impact existing code
- Stay up to date with releases and updates from A/B testing platforms that impact how the development team works with clients
- Handle other ad-hoc requests and support the delivery team
- Working as a member of a larger team and collaborating effectively with others in your function (developers) as well as cross functionally (designers, project managers, consultants, QA engineers, testers and clients) to support each other, achieve the best outcomes, and win as a team
- When required, participate in client calls to discuss technical feasibility, timelines, and troubleshooting
- Work within a portfolio model, owning relationships and delivery for 5-10 clients simultaneously
Requirements
- 3-5 years professional experience with front-end technologies: HTML, CSS, JavaScript
- Excellent knowledge of native JavaScript and strong problem-solving skills
- Experience with DOM manipulation and client-side script injection
- Experience with A/B testing platforms or demonstrable ability to learn technical tools rapidly
- Proficient in design tools (e.g. Figma preferred) for development implementation: asset extraction, CSS generation, and element measurement
- Proficient use of browser developer tools and console
- Understanding of how SPA frameworks (React, Angular, Vue) work - able to inject client-side code without breaking React/Vue applications
- Experience in cross-browser/device testing and ensuring consistency
- Experience with version control such as GitHub, Bitbucket
- An Agile/Scrum developer with 3+ years of experience in an agency or startup environment
- **Nice to haves**
- Experience with analytics tools such as Google Analytics, Adobe Analytics
- Hands-on experience with SPA frameworks (React, Angular, Vue)
- Experience with JavaScript build tools such as Webpack, Vite
- Experience with back-end technologies: Node, Express, PHP, Laravel
- Knowledge of RESTful Services and APIs
- Experience with Command Line Interface (CLI) tools
- Experience with server-side/full-stack A/B testing tools such as Optimizely Feature Experimentation, Amplitude, LaunchDarkly
- Experience with AI development tools
- Experience with DevOps using AWS
- Experience with Jira
Benefits
- Hybrid work environment
- Private Medical Insurance
- BUPA Life Assurance
- Income protection
- Employee Assistance Program
- Cycle to Work salary sacrifice scheme
- Tech & Wearables salary sacrifice scheme
- Octopus EV Scheme
- Discounts and deals on a range of items from hotels, holidays and hormone testing to cinema, gyms and will writing
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
Senior Frontend Developer responsible for implementing front - end functionalities at Raiffeisen Bank. Engaging in agile processes and maintaining existing features while leveraging modern technologies.
Frontend Team Lead managing a team for TradingView’s financial analysis platform. Overseeing planning, delivery, and engineering processes in hybrid work environment.
Frontend Developer crafting functionality and supporting existing features at TradingView, the leading financial analysis platform.
Frontend Developer creating user interfaces for customers of maxcluster's e - commerce hosting. Collaborating with teams using modern tech stacks and best practices in UI/UX design.
Senior Web Engineer enhancing Snowflake's AI Data Cloud platforms through full - stack development and collaboration across teams. Engaging in AI integration and improving web performance.
Alternance gestion revues annuelles produits pour entreprise pharmaceutique à Saint - Priest. Gérer analyses qualité et collaboration avec responsables pharmaceutiques.
Frontend Developer building intuitive and seamless cross - platform sports betting applications at iGaming startup. Focusing on coding, debugging, and enhancing user experience in Lisbon.
Front - end Developer creating and maintaining web applications using React and Next.js at IntellectEU. Collaborating with QA engineers and architecture teams in a hybrid work environment.
Frontend Software Engineer leading the transition to modern Angular architecture for cloud - based solutions. Collaborating with teams to deliver secure, user - focused applications in a rapidly evolving environment.