> Markdown version of [/jobs/ext/1480787-ai-engineer](https://www.wearedevelopers.com/jobs/ext/1480787-ai-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # AI Engineer - **Company:** Neptune North Limited - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Artificial Intelligence, C++ (Programming Language), Computer Programming, Databases, Machine Learning, Large Language Models, Prompt Engineering, Caching, Machine Learning Operations, Decoding - **Published:** July 29, 2026 - **Apply:** https://www.jobleads.com/es/job/edd0b3e2f177b6c0d442ed87d420eb8be ## About the Role * We are looking for exceptional talentwith excellent communication skills * Collaborationis key,both internally and with our clients. Webelieve we do our best work when we are together and working hand in hand with business users * Curiosityis something we embrace andvalue highly * We want people who are positive and passionate,have proven problem solving capabilities, canwork quickly to find solutions to complex challenges and unlockbigopportunities * People need to be able to take ownership and be trusted to deliver, going the extra mile when needed- wedon'tbelieve that the value of AI comes from models alone * We want people who are highly motivatedandhave a highdesire to learn R esponsibilities, * Deep understanding of theoretical machine learning fundamentals as well as practical knowledge of how to build real world ML systems * Direct experience leveraging LLMs in production, and an in depth understanding of prompt design, agentic workflows, eval harnesses,retrieval pipelines,etc. * Exposure to LLM inference stack fundamentals such as KV Caching, Speculative Decoding, Parallel Decoding, and test-time compute ideas. * Excellent programming,technology, and system designskills, including an in-depth understanding of and recent programming experiencewithPython and ideally one of C++, Java, or.Net * Experience working with SQL databases * A strong enthusiasm for programming and technology and an appetite to work in a dynamic and integrated team * An entrepreneurial nature, willing to take ownership and run towards problemsand someone who thrives on innovation * The ability to own all aspects ofan AIproject from start to finish * A desire to understand and solve business problems, build domainknowledgeand increase market understanding * The ability to communicate clearly and professionally with our clients as well as team members * Financial Services experience a bonus, but is not essential * Bachilleratogrades of 9.0 and above, and at least a7.0in abachelor'sdegreeincomputer science, mathematics, a hard science, or a related field from a top university * Push the boundaries of what is possible, and re-imagine how bleeding edge AI can be used to deliver commercial value ## Description An exciting aspect of joining a newly created business at this stage is the opportunity to be in from the start and help define the culture.Part of this role will be to help build the culture and environment in Madrid as we expand our footprint., * Ownership of technical products and projectswith AI at their core- ourengineersactively engage with a wide range of business functions toleveragetheirdeep machine learningknowledge and exposure * Design and delivery of systems and machine learning models that solve commercially impactfulreal worldproblems * Framing business problems and commercial opportunities into AI problems -judgement and acumen to understand the true business need beyond the stated requirements * Challenging current systems and processes to achieve common goals through technical excellence and innovation * Keeping abreast ofprogress in AIand technology trends that will keep us at the forefront of what is possible * Having impact from day one - we empower and trust ourAIengineerstoleveragetheir skillsets ## Related Videos - [HTTP headers that make your website go faster](https://www.wearedevelopers.com/videos/1676-http-headers-that-make-your-website-go-faster) - [Tour de Force: Open-Source LLM Inference Optimization from Simple to Sophisticated](https://www.wearedevelopers.com/videos/100099-tour-de-force-open-source-llm-inference-optimization-from-simple-to-sophisticated) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Your next 10x engineer isn't in your city. Refactor accordingly.](https://www.wearedevelopers.com/videos/100103-your-next-10x-engineer-isn-t-in-your-city-refactor-accordingly) - [HR ROBO SAPIENS: Decoding AI Agents and Workflow Automation for Modern Recruitment](https://www.wearedevelopers.com/videos/1470-hr-robo-sapiens-decoding-ai-agents-and-workflow-automation-for-modern-recruitment) - [Event based cache invalidation in GraphQL](https://www.wearedevelopers.com/videos/433-event-based-cache-invalidation-in-graphql) ## Related Articles - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [Coffee with Developers - Maria Apazoglou - Making AI understandable for all in production](https://www.wearedevelopers.com/magazine/475-coffee-with-developers-maria-apazoglou-making-ai-understandable-for-all-in-production) - [What Are Large Language Models?](https://www.wearedevelopers.com/magazine/304-what-are-large-language-models) - [What Industries Outside of AI Are Hiring The Most AI Experts?](https://www.wearedevelopers.com/magazine/98-what-industries-outside-of-ai-are-hiring-the-most-ai-experts) - [MLOps And AI Driven Development](https://www.wearedevelopers.com/magazine/82-mlops-and-ai-driven-development) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)