<h4><strong data-start="135" data-end="146">Mission</strong></h4><p data-start="147" data-end="451">Act as the execution engine of the team, transforming architectural specifications into robust, efficient, and production-ready code. You will work on building and optimizing a hybrid Node.js–C++ system, leveraging AI tools as a key accelerator to maximize development speed without compromising quality.</p><hr data-start="453" data-end="456"><h4><strong data-start="462" data-end="482">Responsibilities:</strong></h4><ul data-start="484" data-end="1129"><li data-section-id="100rhi5" data-start="484" data-end="568">Develop backend components in Node.js and high-performance integrations with C++</li><li data-section-id="14mttda" data-start="569" data-end="656">Translate technical specifications into functional solutions and accurately</li><li data-section-id="ijeive" data-start="657" data-end="733">Use AI tools to accelerate development, validation, and code improvement</li><li data-section-id="1udfo5o" data-start="734" data-end="801">Apply test-driven approaches to ensure robustness and stability</li><li data-section-id="6bfyt9" data-start="802" data-end="866">Manage and optimize build environments (Docker, Make, CMake)</li><li data-section-id="1p470qh" data-start="867" data-end="964">Analyze system performance and identify bottlenecks, especially in Node.js ↔ C++ interactions</li><li data-section-id="qkln4q" data-start="965" data-end="1046">Refactor legacy code into clean, maintainable, and high-performance solutions</li><li data-section-id="1h87y64" data-start="1047" data-end="1129">Collaborate closely with architecture roles to continuously improve the system</li></ul><hr data-start="1131" data-end="1134"><h4><strong data-start="1140" data-end="1156">Requirements</strong></h4><p data-start="1158" data-end="1171"><strong data-start="1158" data-end="1171">Technical:</strong></p><ul data-start="1172" data-end="1385"><li data-section-id="127d6tf" data-start="1172" data-end="1218">Strong experience with Node.js development</li><li data-section-id="vyigsz" data-start="1219" data-end="1270">Ability to read, understand, and debug C++ code</li><li data-section-id="o0elu8" data-start="1271" data-end="1315">Experience working in Linux environments</li><li data-section-id="1oau6n" data-start="1316" data-end="1385">Familiarity with build tools and containers (Docker, Make, CMake)</li></ul><p data-start="1387" data-end="1407"><strong data-start="1387" data-end="1407">AI & Development:</strong></p><ul data-start="1408" data-end="1715"><li data-section-id="19lhz7s" data-start="1408" data-end="1563">Hands-on experience with AI-assisted development tools (e.g., <span class="hover:entity-accent entity-underline inline cursor-pointer align-baseline"><span class="whitespace-normal">Cursor</span></span>, <span class="hover:entity-accent entity-underline inline cursor-pointer align-baseline"><span class="whitespace-normal">Claude</span></span>, or similar)</li><li data-section-id="35047d" data-start="1564" data-end="1638">Ability to use AI as a productivity multiplier in software development</li><li data-section-id="1bm9adw" data-start="1639" data-end="1715">Experience with iterative development, testing, and validation workflows</li></ul><p data-start="1717" data-end="1728"><strong data-start="1717" data-end="1728">Profile:</strong></p><ul data-start="1729" data-end="1924"><li data-section-id="r7527t" data-start="1729" data-end="1798">Strong English communication skills, as you will be working in an international team</li><li data-section-id="r7527t" data-start="1729" data-end="1798">Execution-driven mindset with strong focus on quality and results</li><li data-section-id="133ukwi" data-start="1799" data-end="1849">Comfortable working in fast-paced environments</li><li data-section-id="1rqr0b1" data-start="1850" data-end="1924">Strong interest in performance optimization and continuous improvement</li></ul><hr data-start="1926" data-end="1929"><h4 data-section-id="1io52me" data-start="1931" data-end="1952"><strong data-start="1935" data-end="1952">What We Offer:</strong></h4><ul data-start="1954" data-end="2498"><li data-section-id="g77lvd" data-start="1954" data-end="2065">Hybrid work model (in any of our offices in Alcobendas, Valencia, Barcelona, Sevilla, or Logroño)</li><li data-section-id="r2fisv" data-start="2066" data-end="2092">Flexible working hours</li><li data-section-id="pujplf" data-start="2093" data-end="2126">Flexible compensation package</li><li data-section-id="1g2swnp" data-start="2127" data-end="2158">Discounts on Arsys products</li><li data-section-id="k0o755" data-start="2159" data-end="2193">Discounts on technology brands</li><li data-section-id="k0o755" data-start="2159" data-end="2193">Challenging technical environment with real high-performance system problems</li><li data-section-id="78d5bf" data-start="2267" data-end="2325">Access to advanced AI tools with no usage restrictions</li><li data-section-id="4cain2" data-start="2407" data-end="2498">Close collaboration with senior profiles and a strong culture of continuous improvement</li><li data-section-id="4cain2" data-start="2407" data-end="2498">Personalized training and development plans</li><li data-section-id="4cain2" data-start="2407" data-end="2498">Biannual team events</li></ul><p> </p>