IT Internships in Europe: What Junior Developers Actually Build

• Implement a backend endpoint and matching frontend form (CRUD).
• Write or refactor unit tests; raise coverage on a chosen module.
• Build internal dashboards or admin pages used by non-technical staff.
• Author Playwright/Cypress smoke tests and wire them into CI.
• Triage and close low-priority bugs from the backlog.

• Frontend — React + TypeScript, Vue 3, occasionally Svelte.
• Backend — Node.js (Express/Nest), Python (Django/FastAPI), PHP (Laravel), .NET in DACH.
• Data — PostgreSQL, MySQL, MongoDB, Redis.
• Infra — GitHub Actions, Docker, AWS or Hetzner; lighter use of Kubernetes in interns' work.

• Reading existing code before proposing changes.
• Writing clear PR descriptions and asking for review early.
• Daily stand-up communication in English.
• Comfort with async tools — Slack, Linear, Jira, Notion.

• A merged-PR list you can reference in interviews.
• Familiarity with at least one production CI/CD pipeline.
• A written technical reference from your tech lead.
• Europass Mobility document validating learning outcomes.

The internships that produce the strongest junior developers follow a predictable curve. If your host has not articulated something like this, ask them to — and propose it yourself in week one. Hosts respond well to interns who arrive with a plan instead of waiting to be assigned one.

• Week 1 — environment setup, repo tour, ship a 'good first issue' (typo, copy fix, dependency bump). Goal: one merged PR by Friday.
• Week 2 — pair with a senior on a real ticket; observe code review; submit your second PR with their guidance.
• Week 3–4 — own a small feature end-to-end behind a feature flag; write the tests; demo at the team standup.
• Week 5–8 — pick up tickets from the sprint board independently; participate in code review for other juniors.
• Week 9–12 — own a slice of the roadmap (an internal tool, an integration, a refactor); produce one piece of internal documentation.
• Week 13+ — represent the team in a cross-functional meeting; present a learning to the wider engineering org.

Stacks cluster by city more than by country. These are the patterns we see most often when matching IT interns to host companies in 2026.

• Berlin — TypeScript/React, Go and Python backends, Kubernetes-heavy infra, strong DevOps and platform-engineering culture.
• Amsterdam — TypeScript everywhere, GraphQL common, AWS dominant, very high English-fluency standard.
• Barcelona — React, Node, PHP (Laravel) in legacy SMEs, Python ML in scale-ups, AWS and Hetzner.
• Lisbon — React, .NET in financial services, Python in fintech and AI startups, Azure increasingly common.
• Dublin — .NET, Java, Python at multinationals; React + TypeScript at startups; AWS dominant.
• Tallinn — TypeScript and Elixir at scale-ups; very mature engineering culture; tight code-review standards.

Pick a stack you can articulate trade-offs about, not the one with the highest hype-cycle right now. Hosts care about your reasoning, not your framework loyalty.

The artefacts an IT intern leaves with determine the next interview. Plan the closing weeks deliberately — interns who improvise their handover lose the strongest reference letters.

• A merged-PR list with one-line context for each (problem, approach, outcome).
• One piece of internal documentation that survives after you leave — runbook, ADR, onboarding doc.
• A short demo recording of your most-impactful work, suitable for a portfolio.
• A written technical reference from your tech lead, requested before the final week.
• Europass Mobility document validated against the LA-T learning outcomes.
• A 5-line LinkedIn recommendation request sent to your supervisor and one peer engineer — easier to write than a long letter and equally credible.
• A short retrospective for yourself: what you learned, what you would do differently, what you want to specialise in next.

Treat the last two weeks as launch prep, not winding down. The placement compounds for two to three years afterwards if the artefacts are good — and disappears in three months if they are not.