Backend Development Intern | Lisbon

Our Unbabel division is looking for a curious and motivated Backend Development Intern to join our Engineering Team. As we deliver seamless, scalable translation solutions across platforms for enterprise partners, you’ll gain hands-on experience designing and building backend systems that power intelligent, multilingual workflows.

Do you want exposure to modern backend architectures, real-world APIs, and cloud infrastructure? Here’s where you can grow those skills in a supportive and collaborative engineering team.

Responsibilities:

• Work with engineers to design and implement new backend features and integrations.

• Help maintain, test, and optimize our codebases.

• Collaborate to solve real problems and deliver practical solutions for our business partners.

• Participate in code reviews and team discussions to learn best practices in code quality and architecture.

• Assist with troubleshooting and debugging backend systems.

• Document your work to help improve our team’s processes.

• Learn about cloud platforms, API design, and database structures (with mentorship!).

Must Have

• Currently pursuing or recently completed a degree in Computer Science, Software Engineering, or a similar technical field, or equivalent practical experience.

• Some programming experience (Python or another language).

• Understanding of basic software engineering concepts and willingness to learn about REST APIs and system integrations.

• Interest in working with databases (e.g., SQL, NoSQL).

• Good communication skills in English.

• Collaborative mindset and motivation to ask questions and seek feedback.

Nice to Have

• Exposure to Python frameworks (FastAPI, Flask, Django, etc.).

• Familiarity with version control (Git).

• Awareness of cloud platforms (AWS, GCP, etc.), containerization (Docker), or microservices.

Why Join Us?

• Contribute to impactful backend solutions used by global enterprises.

• Learn modern backend technologies, engineering practices, and cloud infrastructure with supportive mentors.

• Friendly, international team culture with chances to make a real impact.

• Experience the software development lifecycle from idea to deployment.

About Unbabel

The company’s language operations platform blends advanced artificial intelligence with human editors, for fast, efficient, high-quality translations that get smarter over time. Unbabel integrates seamlessly in any channel so that agents can deliver consistent multilingual support from within their existing workflows. Making it easy for enterprises to grow into new markets and build seamless customer experiences in every corner of the world.

Based in San Francisco, California, Unbabel works with leading customer support and marketing teams at brands such as Facebook, Microsoft, Booking, and Under Armour to communicate effortlessly with customers around the world, no matter what language they speak.