<div class="show-more-less-html__markup show-more-less-html__markup--clamp-after-5 relative overflow-hidden"> <p><strong>Backend Developer – Python (f/m/d) Tensar GmbH | Vienna | Full-time</strong></p><p><br/></p><p><strong>Who we are </strong></p><p><br/></p><p>Tensar builds AI-powered autonomous systems for the security industry. Edge computing, computer vision, flight control, fully autonomous systems. We're currently building our engineering team to dominate in a rapidly growing industry.</p><p><br/></p><p><strong>What you'll do </strong></p><p><br/></p><p>You'll work on our codebase. Specifically:</p><ul><li>Develop and maintain backend logic </li><li>Debug across the full stack </li><li>Write automated tests and improve test coverage</li><li>Review pull requests and write documentation</li><li>Support multi-platform builds (Linux, Windows) and resolve platform-specific issues</li><li>Maintain CI/CD pipelines and improve developer tooling</li><li>Contribute to other projects as needed</li></ul><p><br/></p><p><strong>What you bring</strong></p><p><br/></p><p><em>Technical:</em></p><p><br/></p><ul><li>3+ years of professional software development experience </li><li>Daily use of Git &amp; GitHub, comfortable with GitHub Actions CI/CD</li><li>Communication protocols: Serial (USB/UART), UDP/TCP, Bluetooth</li><li>Linux proficiency, Docker basics</li></ul><p><br/></p><p><em>Strongly preferred:</em></p><p><br/></p><ul><li>MAVLink 2.0 – message structure, dialects, communication patterns</li><li>UAV/drone systems – PX4 or ArduPilot, mission planning, telemetry, parameter management</li><li>GIS/Mapping – coordinate systems, geospatial data, terrain queries, map rendering</li></ul><p><br/></p><p><em>Nice to have:</em></p><p><br/></p><ul><li>GStreamer – video streaming pipelines</li><li>SDL3 – joystick/gamepad input handling</li><li>Embedded systems – resource-constrained environments, real-time communication</li><li>UI/UX understanding</li></ul><p><br/></p><p><em>Mindset:</em></p><p><br/></p><ul><li>Get shit done mentality</li><li>Startup-ready: chaos, stress, and ambiguity are not excuses</li><li>No ego problem – you want what's best for the product, not for your image</li><li>The defense sector is fine with you</li><li>You take input and give honest feedback</li></ul><p><br/></p><p><strong>What we offer</strong></p><p><br/></p><ul><li>Direct collaboration with the founders and lead developer</li><li>Salary: From €45,000+ gross/year depending on experience</li><li>Location: Vienna</li></ul><p><br/></p><p><em>Don't apply if:</em></p><ul><li>You only want to work in one area and everything else is "not your job"</li><li>You need a fully defined process to be productive</li><li>Defense is a dealbreaker for you</li></ul><p><br/></p><p><strong>How to apply </strong></p><p><br/></p><p>Send us your CV and links to your projects (GitHub, portfolio, whatever). No cover letter needed – show us what you've built.</p> </div>