From Data to Decisions. From Platform to Value.
Are you curious about how great front-end experiences are built, tested, and optimised for customers around the world?
Do you want to be part of a team that turns ideas, designs, and business needs into high-quality digital solutions? As an Interim Front End Developer, you’ll support the build and optimisation of customer-facing website experiences, working closely with product owners, UX/UI designers, analysts, and developers to deliver engaging, accessible, and reliable front-end features for Hilti’s digital channels.
What You'll do
From day one, you’ll play a hands-on role in supporting Hilti’s A/B testing and conversion rate optimisation initiatives across our digital channels. Working closely with product owners, UX/UI designers, analysts, and developers, you’ll help turn test ideas into live front-end experiences that can be measured, optimised, and scaled.
You’ll support the full testing lifecycle: understanding the business objective, translating requirements into front-end changes, building test variations using JavaScript and CSS, configuring experiments in A/B testing tools, checking quality across devices and browsers, and helping review results to identify what improves the customer experience.
You’ll also have the chance to:
Build A/B test variations using JavaScript, CSS, and front-end best practices .
Work with A/B testing and experimentation tools to configure, preview, and QA tests.
Collaborate with UX, analytics, product, and market teams to understand customer pain points and test hypotheses
Gain exposure to agile ways of working and tools such as JIRA, Figma, Confluence, and experimentation platforms
Key tasks include:
A/B testing implementation:
Translate test briefs, wireframes, and business requirements into front-end test variations.
Write clean JavaScript and CSS to adapt page layouts, messaging, components, and customer journeys for experiments.
Configure and support tests in A/B testing tools, including audience setup, targeting and preview links.
Carry out QA across browsers, devices, and screen sizes to ensure test experiences work as intended.
Front-end development & optimisation:
Support improvements to website experiences by building lightweight front-end enhancements and prototypes.
Work with analytics teams to understand test performance, customer behaviour, and opportunities for further optimisation.
Document implementation details, reusable code snippets, and learnings so tests can be reviewed and scaled where appropriate.
Help maintain a high standard of quality, accessibility, and consistency across front-end test experiences.
What You’ll Bring
Education/Experience: Bachelor’s degree in Computer Science, completion of a coding bootcamp, or an equivalent portfolio of personal projects.
Fluent in English - Professional (preferably native) communication skills in verbal and written English for business interactions – additional languages are a plus.
Languages: Advanced proficiency in HTML5, CSS3, and JavaScript
Design Awareness: Ability to collaborate with UI/UX designers and translate prototypes (Figma) directly into code.
Responsive Styling: Ensure layouts adapt flawlessly to mobile, tablet, and desktop screens using CSS.
Detail Oriented & Reliable – You follow through on tasks, manage deadlines well, and keep track of multiple priorities without losing focus.
Team-Player – You enjoy supporting others and contributing to the team’s success.
Nice to have:
Previous experience in A/B testing tools.
Experience of using Google Tag Manager.
What’s In It for You
At HDMS, you’ll thrive in a dynamic, internationally-minded environment where diverse perspectives fuel innovation and collaboration. We offer close-knit management, stimulating responsibilities, and a culture that balances autonomy with teamwork.
Why Hilti
Hilti is a global leader in construction innovation, with more than 34,000 team members across 120 countries. Guided by our purpose, Making Construction Better, we’re driven to keep learning, growing, and finding new ways to make a lasting impact. Here, you’ll be empowered to use your strengths, work with a global and inclusive team, and take on meaningful challenges. At Hilti, you’ll have the chance to make your ideas, achievements, and growth real through purpose, passion, and teamwork.
Commitment to Inclusion
At Hilti, inclusion is a key focus in how we work, lead, and grow together. We are committed to embracing diversity of thought and creating an environment that is inclusive of everyone, everywhere. We continuously strive to ensure every voice is valued and every team member feels empowered to contribute. By building on this foundation, we strengthen our teams, our innovation, and our impact, making construction better together.
Does this sound like you? We look forward to your application!
Tempted to apply? Click “apply now” and send us your resume (PDF in English version) today!
Do you want to know more? Go to https://careers.hilti.com/en/digital-marketing
*For non-EU citizens: Please state your eligibility status to work in France and note that if you do not own a valid work permit, Hilti cannot guarantee your final employment due to authority regulations.
Join us and #TransformDigital
Hilti is an equal opportunity employer and success at Hilti is down to teamwork and ability.
