Description
Summary:
Join Hello Pomelo as a development intern for a technical platform overhaul, focused on migrating to modern JavaScript/TypeScript technologies.
Highlights:
1. Participate in the complete overhaul of an existing platform
2. Work with modern JavaScript/TypeScript technologies
3. Mentorship by a tech lead and guidance from a product owner
**About Us**
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At Hello Pomelo, we do more than just software development: we are **the trusted digital transformation partner for French mid-sized enterprises (ETIs)**. Our mission: **to strengthen business-critical tools** that drive our clients’ businesses by delivering tailored, reliable solutions across their entire application landscape.
To achieve this, we operate across **four complementary pillars**:
* **Custom web and mobile applications**, designed to meet each client’s specific needs and ensure optimal user experiences;
* **DevOps**, ensuring system stability, scalability, and efficiency while accelerating delivery cycles;
* **E-commerce**, supporting the growth of retail and online service providers with high-performance, flexible platforms;
* **ERP and PIM**, structuring and optimizing business processes, centralizing information, and facilitating decision-making.
Every day, our teams bring **Hello Pomelo’s energy and technical expertise** to serve our clients — ensuring that their technical production capacity is never a barrier to innovation, but rather a concrete driver of growth and added value. We are proud to be a **leading tech delivery partner** for French ETIs, supporting their long-term success.
**Job Description**
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Barcelona \- 2 months
We are seeking a development intern to participate in the complete overhaul of our platform. The goal is to migrate the current tech stack (Symfony / React / Next.js) to a modern full JavaScript/TypeScript stack, preserving all existing functionality.
**Your Responsibilities**
You will work on the platform’s technical migration while respecting the existing functional scope. No new features: the focus is on producing clean, maintainable, and well-structured code. The target stack will revolve around modern JavaScript technologies on both back-end and front-end, including concrete security topics: authentication, access control, and data protection.
You will be mentored by a tech lead and guided by a product owner throughout the internship.
**Practical Information**
* Duration: 2 months
* Location: Barcelona (on-site)
* Compensation according to profile
**Required Profile**
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**Required Profile**
* Strong proficiency in full-stack JavaScript/TypeScript development
* Familiarity with Symfony or React / Next.js is a plus for understanding the current codebase
* Experience with or curiosity about frameworks such as Nest.js or authentication tools like Keycloak is a plus
* Sensitivity to security best practices
* Comfortable with Git and standard development practices
* Autonomous, rigorous, and capable of reading and understanding existing code
**Additional Information**
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* Contract type: **Internship** (2 to 2 months)
* Start date: **01 July 2026**
* Location: **Barcelona**
* **Occasional remote work permitted**