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Flowdesk

Software Engineer Intern (F/M/D)

On site

Paris, France

Fresher

Internship

12-11-2025

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Skills

Communication JavaScript Rust TypeScript HTML CSS GitHub CI/CD Docker Kubernetes react node.js tailwind NodeJs Recruitment HTML/CSS JS GCP Nginx blockchain GitHub Actions

Job Specifications

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

Requirements

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.

Benefits

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

Technical Assessment
HR Interview
Technical Interview with the team
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!

About the Company

Founded in 2020, Flowdesk is a regulated, full-service digital asset trading and technology firm that specializes in market making, OTC, and treasury management services. With offices globally, we have engineered a trading infrastructure that integrates more than 120 centralized and decentralized exchanges. Combining proprietary technology with significant experience from traditional markets and algorithmic trading, Flowdesk brings control and transparency to digital asset markets. Know more