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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer, Ai, Full-Stack - **Company:** Flyboard - **Location:** Barcelona, Spain (Remote available) - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Application Integration Architecture, Microsoft Azure, Cloud Computing, Software Quality, Continuous Delivery, Continuous Integration, Cursor (Graphical User Interface Elements), Programming Tools, Distributed Systems, Python (Programming Language), Performance Tuning, Systems Integration, Speech Recognition, Core Voice Platform, Large Language Models, Model Validation, Reliability of Systems, Speech Synthesis, Front End Software Development, Virtual Agents - **Published:** September 6, 2026 - **Apply:** https://www.buscojobs.com.es/software-engineer-ai-full-stack-en-barcelona-ID-369616253 ## About the Role Typically 2-5 years of relevant experience, although we care more about demonstrated ownership and technical ability than time in role. Strong Python and backend engineering skills. Experience building, deploying, and operating production software. Familiarity with APIs, distributed systems, cloud infrastructure, and observability. The ability to investigate technical problems methodically and take ownership through production. Comfort working in a fast-moving environment with changing requirements and direct customer impact. Practical experience using AI coding tools such as Codex, Cursor, or Claude Code. Nice to have: Experience with voice AI, conversational agents, real-time audio, or telephony systems. Experience integrating LLM, speech-to-text, or text-to-speech providers. AWS and CI/CD experience. Working knowledge of JavaScript and a modern frontend framework. Familiarity with model evaluation, prompting, tool use, or fine-tuning. Strong product judgment and attention to user experience. Why This Role Matters ## Description Descripción del trabajoAbout Flyboard La descripción completa del puesto cubre todas las habilidades asociadas, la experiencia previa y cualquier cualificación que se espera que tengan los solicitantes. We Make Voice AI Work. We ship production-ready agents that automate real sales and operations. builds and operates custom AI voice agents that automate high-volume, repeatable workflows across commercial and operational processes. Our customers include fast-moving SMEs, corporates, and mid-market leaders across Europe and LatAm. We are execution-obsessed, customer-ROI-driven, and deeply committed to operational excellence.Mission As a Software Engineer for the Core Platform, you will work closely with the founders and a small engineering team to design, build, and scale the foundational technology that powers our AI voice agents. Your mission is to own the performance, reliability, and technical excellence of our core platform, ensuring seamless integration with the world's leading AI model providers. This role is highly hands-on, critical to our platform's scalability, and central to Flyboard's ability to deliver value at high volume. You will report directly to the Technical Cofounder.What You Will DoPlatform Development: Design and implement robust, scalable platform features for our core voice agent infrastructure.API & Integration Ownership: Build, maintain, and optimize high-throughput APIs, ensuring reliable integration with core model providers (OpenAI, Google, ElevenLabs, Anthropic, Amazon, etc.).System Reliability: Optimize system performance, latency, and observability to ensure the core platform is stable and efficient under heavy load.Developer Tooling: Develop and implement internal tooling and automation to streamline the work of our Operations and Delivery teams.Deployment and Infrastructure: Improve our continuous integration/continuous deployment (CI/CD) pipelines and contribute to maintaining our cloud infrastructure (primarily AWS, with exposure to Azure and GCP).Code Quality: Write clean and maintainable code in Python and contribute to frontend functionality in JavaScript when needed.Ideal ProfileTypically 2-5 years of relevant experience, although we care more about demonstrated ownership and technical ability than time in role.Strong Python and backend engineering skills.Experience building, deploying, and operating production software.Familiarity with APIs, distributed systems, cloud infrastructure, and observability.The ability to investigate technical problems methodically and take ownership through production.Comfort working in a fast-moving environment with changing requirements and direct customer impact.Practical experience using AI coding tools such as Codex, Cursor, or Claude Code.Nice to have: Experience with voice AI, conversational agents, real-time audio, or telephony systems.Experience integrating LLM, speech-to-text, or text-to-speech providers.AWS and CI/CD experience.Working knowledge of JavaScript and a modern frontend framework.Familiarity with model evaluation, prompting, tool use, or fine-tuning.Strong product judgment and attention to user experience.Why This Role MattersThis role sits at the technical core of Flyboard's product. Your work directly impacts the speed, quality, and scalability of every AI agent we put into production. xbhjioe You will learn how to operate and scale cutting-edge AI systems, work closely with engineers and founders, and become a key contributor to our rapid growth.What We OfferA steep learning curve with direct exposure to founders and the initial team of a startupReal ownership from day one, with impact visible immediately in customer outcomesGenerous budget for AI coding toolsTechnical ownership with architectural influenceExposure to problems that are challenging, not just operationally busyA dynamic, execution-driven environment with rapid iteration cyclesMostly on-site, with flexibility to WFH sporadically when neededPermanent, full-time employment contract in Spain ## Related Videos - [Guiding Agentic AI with Vue](https://www.wearedevelopers.com/videos/2033-guiding-agentic-ai-with-vue) - [Green Cloud Computing](https://www.wearedevelopers.com/videos/592-green-cloud-computing) - [Developer Tools for Microsoft Azure](https://www.wearedevelopers.com/videos/450-developer-tools-for-microsoft-azure) - [Raise your voice!](https://www.wearedevelopers.com/videos/10-raise-your-voice) - [Coding an Immersive Copilot using Unity / .NET and Azure OpenAI!](https://www.wearedevelopers.com/videos/1204-coding-an-immersive-copilot-using-unity-net-and-azure-openai) - [How to Stop Your Agents From Going Rogue - Arnav Gupta](https://www.wearedevelopers.com/videos/2152-how-to-stop-your-agents-from-going-rogue-arnav-gupta) ## Related Articles - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [What Are Large Language Models?](https://www.wearedevelopers.com/magazine/304-what-are-large-language-models) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [Dev Digest 137 - AI'm not sure about this](https://www.wearedevelopers.com/magazine/485-dev-digest-137-ai-m-not-sure-about-this) - [What is Software Engineering in the Age of AI?](https://www.wearedevelopers.com/magazine/640-what-is-software-engineering-in-the-age-of-ai) - [What is Agentic Programming and Why Should Developers Care?](https://www.wearedevelopers.com/magazine/625-what-is-agentic-programming-and-why-should-developers-care)