Software Engineer Technical Lead (Python)

Software Engineer Technical Lead (Python) Join the role at Luzia, a high-growth AI startup focused on making AI accessible to GenZ users worldwide. Position: Software Engineer Tech Lead (Python) Location: Hybrid (Spain) Offices: Madrid About Us: Backed by top-tier Silicon Valley investors, Luzia launched in April 2023 as a personal assistant on WhatsApp and has grown to reach 1M daily active users in its first 18 months. We ship fast, keep it simple, and use AI daily to automate routine work and amplify creativity. Responsibilities * Lead Backend Development: Design, build, and deploy backend services with a focus on scalability, performance, and robustness, particularly for applications utilizing LLMs. * Cross-Functional Collaboration: Work closely with product and engineering teams to translate business needs into scalable, high-performing technical solutions. * API Development: Design and manage inter-service communications, ensuring seamless integration across our AI products. *

AI Experience and Best Practices: Act as the AI referent within the engineering team, define and uphold engineering best practices for AI, including model integration, prompt optimization, evaluation pipelines, and AI deployment. * Code Excellence: Maintain high standards for code quality, testing, and deployment, championing best practices in continuous integration and development. * Mentorship: Guide and mentor junior engineers, fostering a culture of innovation, collaboration, and continuous improvement. * System Optimization: Continuously analyse and optimise system performance, scalability, and reliability. * Architectural Input: Engage in system architecture discussions, influencing the technical roadmap and future development strategies. Requirements * Experience: 8+ years of professional experience in Python development (additional languages are a bonus). * Startup DNA: Previous experience in a startup environment, thriving in fast-paced, dynamic teams. * Cloud Expertise: Hands-on experience with cloud environments, modern databases, and distributed data ecosystems. AWS is a plus. * AI/ML Focus: Hands-on experience or side projects involving AI, with a deep understanding of LLMs and other AI/ML technologies. * Customer-Centric: Product-focused mindset, ensuring technical solutions align with customer needs. * Communication: Strong communication skills; fluency in English and ability to work in an English-only environment. * Proactive Leadership: Self-starter with excellent prioritization skills, able to work autonomously while driving results. * Business-Technical Translator: Ability to communicate complex technical concepts in a way that resonates with business stakeholders. * Education: Bachelor's degree in Computer Science, Engineering, or related fields. Nice-to-Haves * Experience with high-performance computing and system optimisation. * Previous leadership or project management experience. * B2C experience, particularly

with large user databases. * Opportunity to work on innovative AI projects. * Professional growth and development in cutting-edge technologies. * Competitive salary and attractive benefits package. * Flexible, inclusive, and collaborative work culture. Why Join Us? We are on a journey to make AI meaningful, accessible, and transformative for millions of users. At Luzia, you'll have the opportunity to contribute to products that are reshaping the AI space, learn from a product-and-engineering-oriented team, and drive forward momentum in a fast-growing startup. Our Culture and Values We live and breathe agility. The "ship, experiment, iterate, ship" mentality drives action, experimentation, and rapid execution. Our team is collaborative, innovative, and deeply mission-driven. If you're passionate about AI, love solving complex problems, and want to make a significant impact, we'd love to hear from you. #J-18808-Ljbffr