Staff Software Engineer (Backend)

TL;DR

Staff Software Engineer (Backend): Designing and delivering high-scale, data-focused products for a global digital advertising platform with an accent on distributed systems, backend infrastructure, and quality at scale. Focus on solving algorithmic and optimization challenges, coordinating thousands of servers, and providing technical leadership through mentoring.

Location: Madrid, Spain (Full-time, onsite)

Company

hirify.global is a global leader in independent digital advertising technology, operating a platform that reaches audiences across the open internet.

What you will do

• Design, build, and deliver data-focused products for global clients.
• Develop infrastructure using .NET Core, Java, Scala, and cloud platforms including AWS, Azure, and Aliyun.
• Lead design reviews, create proofs of concept, and contribute to the overall technical roadmap.
• Build large-scale distributed systems coordinating thousands of servers and manage petabyte-scale data challenges.
• Provide technical leadership and mentorship to engineers to raise the team's overall engineering bar.

Requirements

• Commercial development skills in OO programming (C#, Java, or C++).
• Experience with cloud-based platforms such as AWS, Azure, or Aliyun.
• Deep understanding of Agile Scrum methodologies and development practices.
• Proven track record of making significant, self-directed contributions to large-scale software projects.
• Experience building always-on, high-availability systems across various technology layers.
• Proficiency with distributed source control systems (Git).

Culture & Benefits

• Opportunity to work on one of the world's largest and most influential adtech platforms.
• High-impact role where your work affects global traffic in real-time.
• Collaborative environment that encourages curiosity, learning, and innovation.
• Inclusive culture that values diversity of perspectives and background.
• Focus on engineering fundamentals and first-principles problem solving.