Software Engineer Intern (F/M/D)

Flowdesk; Paris; Sur place; EUR 80 000 - 100 000; Plein temps

Résumé du poste

A global financial institution in Paris is seeking an enthusiastic intern to join its Full-Stack team. The role involves building front-end features for the OTC product using React and TypeScript, contributing to the design system, and collaborating with various teams. Ideal candidates are Bachelor's students with strong web fundamentals and a passion for learning. This is a full-time, on-site internship lasting 6 months starting from March 2026 with various perks including meal vouchers and transportation support.

Prestations

50% of transportation costs

Lunch vouchers (€9.25 per day, 60% covered)

Team events and offsites

Qualifications

• Hands-on experience with React and TypeScript/JavaScript.
• Solid web fundamentals (HTML/CSS, JS >ES6, API integration).
• Understanding of CI/CD process.

Responsabilités

• Build and ship front-end features for our OTC product.
• Contribute to our UI library and Flowdesk’s design system.
• Collaborate with product, design, and engineering to implement features.

Connaissances

React

TypeScript

JavaScript

HTML/CSS

API integration

CI/CD

English proficiency

Formation

Bachelor's degree

Outils

Docker

Node.js

GitHub Actions

Description du poste

Flowdesk's mission is to build a global financial institution for digital assets, one designed from the ground up for market integrity and efficiency.

To achieve this in a rapidly evolving market, we apply a disciplined, first‑principles approach to everything we do. This approach is embedded in our core services, from institutional liquidity provision, trading solutions, OTC execution to our comprehensive treasury management offerings. This is how we cut through the noise and build robust and scalable systems across all our business lines.

We seek individuals who are driven by this systematic approach. Joining Flowdesk means you will be a key contributor in building and scaling a more transparent and efficient financial markets infrastructure.

Given our rapid growth, we've also launched our Early Talent Program, designed to attract and develop high‑potential students through internship experiences. This program aims to build a strong pipeline of future full‑time employees who are already aligned with our culture and expectations.

You’ll join a Full‑Stack team building the tech powering our OTC product, most notably working on the web applications used by traders. We ship advanced React/TypeScript apps end‑to‑end from clean form flows to scalable components while evolving our UI library and Flowdesk’s design system.

Role

• Build and ship front‑end features for our OTC product, using React and TypeScript, owning tasks end‑to‑end (specs, UI, testing, release).
• Contribute to our UI library and Flowdesk’s design system, create and maintain reusable components, work with UI/UX designers, resolve design mismatches, and ensure consistency with our graphic charter.
• Tackle foundational front‑end work (performance, accessibility, testing, developer experience) while iterating quickly on simple product interfaces (forms, validations, state management).
• Collaborate with product, design, and engineering to scope, implement, and improve user‑facing features; explore new approaches and share learnings.

Our stack Back‑end, Typescript, NodeJS, Rust, GCP, Kubernetes, Docker. And in the Front‑end, React, TypeScript, Tailwind, styled-components, AG‑Grid, Tailwind

You can find a more detailed list here Flowdesk Stackshare

Background and Experience

• Proficiency in English.
• Hands‑on experience with React and TypeScript/JavaScript (via prior internship/alternance or shipped school projects).
• Solid web fundamentals (HTML/CSS, JS >ES6, API integration, NGINX) and ability to deliver end‑to‑end UI features.
• Understanding of CI/CD process (GitHub Actions, Docker)
• Exposure to Node.js and experience with component libraries/design systems is highly appreciated.

Skills and personality

• Curious and motivated to learn about emerging technologies, including blockchain and crypto related topics.
• Detail‑oriented with excellent organizational and communication skills.
• Ability to work in a fast‑paced, dynamic environment and make informed decisions under pressure.

Start Date, starting from March 2026

What would be the Internship duration ? 6 months(5 days in a week, full time on‑site)

Who is eligible ? Bachelor's student who are able to provide an internship convention.

• International environment (English is the main language)
• 50% of transportation costs & a sustainable mobility agreement
• Swile lunch voucher (€9.25 per day, 60% covered)
• Team events and offsites

Recruitment Process

Are you interested in this job but feel you haven't ticked all the boxes? Don't hesitate to apply and tell us in the cover letter section why we should meet!

Here’s what you can expect if you apply

1. Technical Assessment
2. HR Interview
3. Technical Interview with the team
4. On‑site team fit and Wrap‑up Interview

On the agenda, discussions rather than trick questions! These moments of exchange will allow you to understand how Flowdesk works and its values. But they are also (and above all) an opportunity for you to present your career path and your expectations for your next job!