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Software Engineer Intern, Helios (Summer 2026)

SingleStoreLisbon, Portugal
On-site Internship

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Experience Level

Entry Level

Qualifications

Required Skills and Experience• Currently enrolled in a Bachelor’s Degree program in Computer Science, Electrical Engineering, Computer Engineering, or a related field• Strong understanding of computer science fundamentals• Proficient in programming languages such as JavaScript, Golang, or TypeScript• Passionate about developing highly reliable software• Solid understanding of algorithms and data structuresPreferred Skills and Experience• Familiarity with core computer science principles including operating systems, distributed systems, concurrency, multithreading, and server architectures

About the job

SingleStore is looking for a Software Engineer Intern to join the Helios team in Lisbon, Portugal for Summer 2026. This paid internship runs for 12 weeks and gives hands-on experience with real-time technologies that support business operations worldwide.

Internship Overview

Interns at SingleStore work closely with engineering teams, contributing to projects that move quickly from idea to production. During the program, interns take responsibility for their own projects, seeing them through the full product lifecycle. Along the way, experienced engineers offer mentorship and share technical and business knowledge. Collaboration is central, with opportunities to work alongside product, marketing, and sales teams.

SingleStore values celebrating achievements together, both in the office and at events around Lisbon.

What You Will Do

  • Work in small teams to develop and test new product features
  • Deploy code incrementally to production during the internship
  • Gain exposure to the full software development process
  • Build a broad understanding of SingleStore’s products and business

Required Qualifications

  • Currently enrolled in a Bachelor’s program in Computer Science, Electrical Engineering, Computer Engineering, or a related field
  • Strong grasp of computer science fundamentals
  • Proficiency in at least one programming language: JavaScript, Golang, or TypeScript
  • Interest in building highly reliable software
  • Solid understanding of algorithms and data structures

Preferred Experience

  • Familiarity with operating systems, distributed systems, concurrency, multithreading, or server architectures

About SingleStore

SingleStore is at the forefront of real-time technology, reshaping how businesses operate daily. We foster an engaging and collaborative environment that prioritizes innovation and excellence.

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