Software Development Engineer in Test

Samba connects the advertising industry. Today, a trillion dollars of media flows through platforms that don’t talk to each other, and each one measures its own results. We built the independent alternative: consented first-party data and AI that give the world’s biggest advertisers, publishers, and platforms one clear view across all of it.The next era of advertising will run on AI agents, and those agents will need data they can trust. We’re building that foundation, and the agents that act on it. Join us and help build what the industry runs on.

About the Role

Based in Porto, you join our collaborative Engineering and Development teams, working closely with peers and decision-makers to maintain and develop our global services and products. You are a developer with a passion for quality: you build the tools and systems that prevent bugs, design the custom testing tools and test cases that validate new features before production, and take part in white-box testing and code reviews that ensure seamless releases.

What You’ll Do

• Test Full-Stack: Write and execute unit, integration, and stress test cases so backend and frontend components are production-ready.
• Explore the Code: Dive into application code to understand how features work under the hood and design more effective tests.
• Build Testing Tools: Develop and evolve internal tools and utilities needed to test complex new features or code changes.
• Automate Tests: Write and maintain automated test scripts for new features, helping us move away from manual verification.
• Debug and Investigate: Find the root cause of failures by analyzing logs and stack traces, and report bugs with high-quality technical detail.
• Collaborate on Features: Join Scrum ceremonies, ask “what if” questions during refinement to catch edge cases early, and take part in code reviews that keep changes maintainable with robust error handling.
• Learn and Support: Assist in maintaining testing environments, and work with Senior SDETs and Developers to learn how to architect scalable test suites and manage continuous integration and continuous delivery (CI/CD) pipelines.

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What You Bring

• A degree in Software Engineering, Computer Science, or a similar technical background, or equivalent practical experience, with a solid grasp of object-oriented programming (OOP) and modern software architecture.
• Technical curiosity: a natural problem-solver who enjoys deconstructing complex systems, and wants to know why something broke and how to prevent it from happening again.
• An Agile mindset: you thrive in collaborative environments and see Agile as continuous improvement, flexibility, and delivering value in iterative cycles, not just a set of meetings.
• Proficiency in a programming language such as Java, Python, or C++, and eagerness to learn our stack, which is primarily .NET and C# (knowing it well is a major plus).
• Comfort in a terminal, with experience in (or strong interest in) scripting languages like PowerShell or Bash, and fluency in Git, including branches and pull requests.
• Strong conversational English (written and spoken), enjoyment of a multicultural environment, and a belief that quality is a shared responsibility with a high bar for clean, maintainable code.
• An advantage: previous experience as a Software Developer or QA Engineer, including internships or significant academic projects.

Samba is an equal opportunity employer.

Your personal information

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Use of AI in hiring

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