Senior Software Engineer C# - FLEXIBLE WORKING (Madrid)

Overview

HiveMQ is the Industrial AI Platform helping enterprises move from connected devices to intelligent operations. Built on the MQTT standard and a distributed edge-to-cloud architecture, HiveMQ connects and governs industrial data in real time, enabling general leaders like Audi, BMW, Eli Lilly, and Siemens to operationalize AI and drive innovation at scale. At HiveMQ, our culture is Effortless → Empowered → Relentless.

Responsibilities

• Create self-healing software systems with state-of-the-art tools.
• Develop and implement concurrent, maintainable, and performant algorithms.
• Build, maintain and refactor existing codebases, extend APIs, improve test coverage and address security vulnerabilities.
• Work with profilers, benchmarking, and state analysis tools.
• Leverage AI tools such as Claude Code, GH Copilot.
• Identify and eliminate performance bottlenecks.
• Solve edge cases and find the common tr...