Intern Engineering (MarTech)

Mytheresa Spain Services S.L.; Barcelona; On-site; EUR 7,600 - 10,000; Part time

Benefits offered by this job

Mobile office access up to 20% of time

Mental health & well-being support

Urban Sports Club membership

Corporate benefits platform

Job summary

LuxExperience is seeking an Engineering Intern in Barcelona to join our Marketing Technology team. You will build and maintain custom JavaScript/TypeScript libraries, develop frontend interfaces using React, and debug issues across web platforms.

The role emphasizes a builder mindset and hands-on contribution to serverless and microservices initiatives. You will work on several projects with guidance from senior engineers, collaborate using Git, and contribute to technical docs.

Qualifications

• Strong fundamentals in JavaScript (ES6+) and hands-on experience building applications with React.
• Experience with TypeScript and modern frontend tooling.
• Familiarity with REST APIs, JSON, and Git version control.

Responsibilities

• Custom Software Development: build, test, and maintain custom JavaScript/TypeScript libraries and web components from scratch.
• Frontend Web Engineering: develop interfaces and interactive features using React and ES6+.
• Code Debugging: inspect network payloads and fix runtime issues across web platforms.

Skills

JavaScript (ES6+)

React

TypeScript

REST APIs

Git

Web debugging

Tools

AWS

Webpack

Vite

Tag Manager (GTM)

Job description

LuxExperience is the leading digital, multi-brand luxury group and the online shopping destination for luxury enthusiasts worldwide. LuxExperience operates a portfolio of some of the most distinguished store brands in digital luxury and creates communities for luxury enthusiasts with unique digital and physical experiences. Mytheresa, NET-A-PORTER and MR PORTER, jointly comprising the luxury segments of LuxExperience, offer highly curated edits of the most prestigious luxury brands across the world, featuring womenswear, menswear, kidswear, fine jewelry & watches, and lifestyle products. YOOX, which forms the off-price segment of LuxExperience, is the leading destination for multi-brand off-season online luxury shopping. The NYSE listed group operates worldwide.

Welcome to the official LuxExperience Careers Portal.

To support our Marketing Technology (MarTech) team we are searching for a Engineering Intern to be based in our Barcelona office.

WHAT YOU WILL DO

• Custom Software Development: Build, test, and maintain custom JavaScript/TypeScript libraries, lightweight SDKs, and web components from scratch to support marketing tech operations.
• Frontend Web Engineering: Develop and optimize web interfaces and interactive features using modern frameworks (React, JavaScript ES6+).
• Code Debugging & Troubleshooting: Inspect network payloads, track down runtime errors, and fix broken scripts or integration bugs across web platforms.
• Cloud & Microservices Exploration: Assist in exploring, developing, and deploying serverless scripts, webhooks, and microservices (with a focus on AWS architecture).
• Engineering Best Practices: Write maintainable code, manage version control via Git, and produce technical documentation for internal developer references.

WHO YOU ARE

• Core Web Development: Strong fundamentals in JavaScript (ES6+) and hands‑on experience building applications with React.
• Builder Mindset: A strong inclination to build custom libraries, utilities, or personal/side projects from scratch rather than relying solely on third‑party libraries.
• Debugging Expertise: Ability to systematically troubleshoot frontend code, inspect browser console logs / network tab requests, and resolve script execution issues.
• Software Foundations: Solid understanding of DOM manipulation, asynchronous JavaScript (Promises, Async/Await), REST APIs, JSON data structures, and Git.
• Experience with Google Tag Manager (GTM) or other Tag Management Systems (TMS) is a plus.
• Exposure to AWS microservices, serverless functions (e.g., Lambda), or cloud storage/hosting is a plus.
• Basic understanding of web tracking architecture (tracking pixels, cookies, or event payloads) is a plus.
• Experience with TypeScript, bundling tools (Webpack, Vite), or package publishing (NPM) is a plus.

WHAT WE OFFER

• Mobile office with up to 20% of your total contracted hours (job and position permitting)
• A monthly gross salary of 800.00€
• Individual support on mental health & well‑being
• Urban Sports Club
• Corporate benefits platform

LuxExperience is an equal opportunities employer, we encourage people with a diverse range of backgrounds to apply. We recognize and celebrate the benefits that diversity brings to our workplace, our business and our customers.

We welcome and will consider all applications regardless of race and nationality, religion, color, sex, pregnancy or related medical conditions, parental status, sexual orientation, gender identity, gender expression, age, status as an individual with a disability, or any other legally protected characteristics.

If you require any reasonable adjustments to complete your application, please do not hesitate to advise us accordingly.

Experience Level: InternWorkplace Type: On-site

Explore exciting job opportunities across our brands — including NET-A-PORTER, MR PORTER, and YOOX—

LuxExperience is the leading digital, multi‑brand luxury group and the online shopping destination for luxury enthusiasts worldwide — home to Mytheresa, NET-A-PORTER, MR PORTER, and YOOX.