Full-Stack AI Engineer Intern (AI)

Location: Marseille, France; flexible hybrid with around 2 days of remote work per week. The internship starts between December 2026 and February 2027 and lasts 6 months.

Company

hirify.global is a creator marketing platform and managed service connecting over 16,000 verified creators with more than 500 brands for creator campaigns. The company is headquartered in Rotterdam and is building a technology hub in Marseille.

What you will do

• Take part in the full feature lifecycle: specification, coding, testing, review, release, and production monitoring with Sentry and PostHog.
• Build AI agents that shortlist creators, draft campaign briefs, follow up with creators, and support campaign-manager approvals.
• Develop features for the Next.js brand application, including an AI assistant for campaign briefs.
• Build MCP integrations that let brands use Claude with their hirify.global campaign data.
• Contribute to the Expo/React Native mobile app, including push notifications, messaging, and store releases.
• Develop social-platform scrapers, data pipelines, and creator analytics for themes, brand safety, and brand affinity.

Requirements

• Final-year Master's or engineering-school student in computer science or software engineering, seeking a 6-month end-of-studies internship or an internship abroad as part of a degree.
• Experience building and shipping projects with TypeScript and Node.js, plus React or another JavaScript frontend framework such as Vue or Angular.
• Experience may come from school projects, side projects, open source, or a previous internship; examples of shipped work must be provided.
• Regular use of AI coding tools and the judgment to identify when they should not be trusted.
• Careful code reading and a strong focus on judgment and quality.
• Comfortable working in English for weekly calls with the Rotterdam team; daily communication in Marseille can be in French or English.
• The role involves AI engineering with agents, AI features, tools, prompts, and evaluations built on existing LLMs; model training is not required.

Nice to have

• React Native or Expo experience.
• SQL experience.
• Experience with LLM APIs or agents.
• A project with real users.

Culture & Benefits

• Work directly with the CTO in Marseille on specifications, code reviews, architecture discussions, and real production features.
• Collaborate with the Rotterdam team through weekly video calls; no travel is required.
• Flexible hybrid work from a Marseille coworking space, with emphasis on shipped results rather than desk hours.
• An internship agreement with a university is required.
• Students from other EU countries are welcome, including Erasmus+ traineeships.

Hiring process

• Attend a 15-minute introductory call with Matthieu, the CTO.
• Complete a 30-minute technical interview.
• Apply with a CV and a few lines about one project, including what was built, what broke, and how it was fixed, plus a GitHub or project link. A cover letter is not required.