Senior Full-Stack Software Engineer

<h3 style="text-align:center;"><strong>Why Keyrus, Why Now!</strong></h3><p>Keyrus is an international group of 2,800 consultants and experts across 28 countries, built on a single conviction: <strong>AI does not transform businesses. Architected intelligence does.</strong></p><p>For more than 30 years, we have been building the data foundations that make intelligent systems work — designing the Operating System of the intelligent enterprise, where intelligence is embedded into the core of business processes to create sustainable value: <strong>we operationalise intelligence.</strong></p><p>AI does not replace humans. It repositions us to a place no system can follow: <strong>understanding, deciding, designing, and creating.</strong></p><p>At Keyrus, you will not just develop skills — you will develop judgment. Your expertise sharpens with every system you architect, every client challenge you solve, and every deployment that compounds on the last.</p><p>Over time, you grow into one of the rarest professionals of the intelligence era: someone who bridges data, AI, and human decision-making at scale, across industries and geographies. This is not a role you fill. It is a discipline you master and a story you help write to become a <strong>Keyrus Architect of Intelligence.</strong></p><p><strong>Technology amplifies. Keyrus culture differentiates. Industrial discipline connects the two.</strong></p><p></p><h3><strong>Role Details</strong></h3><p>📍 <strong>Job location:</strong> Portugal or Spain (Remote model)<br>🕒 <strong>Contract type:</strong> Employee / Fixed-term / Contractor B2B<br>🗓 <strong>Target start date:</strong> ASAP<br>⏰ <strong>Working hours:</strong> Full-time<br>💵 <strong>Compensation:</strong> €35,000 - €55,000 gross per year</p><p></p><h4><span><strong>📋</strong></span><strong> What You'll Architect</strong></h4><p>As a <strong>Senior Full-Stack Software Engineer</strong>, you will help organisations transform complexity into measurable outcomes by combining technology, data, intelligence, and human decision-making.</p><p>This role is both technical and consultative, perfect for someone who can combine <strong>full-stack development</strong>, <strong>cloud-native engineering</strong>, <strong>backend API design</strong>, and <strong>modern software delivery practices</strong>. We're looking for professionals who can build scalable products that support enterprise-grade AI and data platforms.</p><h5>Key Responsibilities</h5><ul><li><p>Design, develop, and maintain <stro