Senior conversational AI designer

Description

Job Summary: Flat 101 is seeking an AI generative-focused experience designer to create living interactions such as assistants and autonomous agents, combining design, technology, and business. Key Highlights: 1. Designing AI generative-based experiences 2. Role at the intersection of design, technology, and business 3. Product mindset for conversational solutions DESCRIPTION At Flat 101, we are international leaders in designing, building, and optimizing digital products and services. We partner with leading companies to accelerate their growth through **BXOp (Business eXperience Optimization)** — our proprietary approach that integrates data, technology, design, and business, with a clear focus on real-world impact. We are looking for someone who understands that designing is no longer just about interfaces, but about behaviors, systems, and conversations. ### **What will your mission be?** Your mission will be to **design AI generative-based experiences**, where the product is no longer a screen, but a living interaction: assistants, copilots, autonomous agents, or voice interfaces. This role sits at the intersection of design, technology, and business, requiring sound judgment to ground AI hype into real, useful, and scalable solutions. ### **This will be your day-to-day:** * **Design end\-to\-end conversational experiences:** from problem definition to user validation. * **Create, test, and evolve prompts, system instructions, and interaction structures.** * **Define agent behavior:** tone, boundaries, fallbacks, error handling, and complex scenarios. * **Collaborate with the technical team to define agent architectures and conversational flows.** * **Analyze traces and usage data to detect failures, improve logic, and optimize system performance.** * **Define quality criteria (evals)** to ensure relevant, safe, and consistent responses. * **Properly manage context and memory in multi\-step flows.** * **Translate business needs into clear, actionable, and measurable conversational solutions.** * **Deliver clear specifications to the development team** (especially in environments like LangGraph). * **Continuously iterate based on data, feedback, and real product usage.** REQUIREMENTS ### **Who are we looking for? Someone who matches these skills:** * **Design conversational experiences that go beyond traditional chatbot flows**, creating dynamic, useful, and natural interactions. * **Understand how LLMs work and be capable of working with prompting, context, memory, and their real limitations.** * **Have experience or curiosity about working with agent architectures** (multi\-step workflows, tools, orchestration…). * **Be able to design behaviors, not just interfaces**: tone, personality, decision-making, error handling, and edge cases. * **Be able to read and analyze agent behavior using tools like LangSmith** (or others), identifying where logic breaks down. * **Have sound judgment to define what constitutes a good response:** relevance, accuracy, tone, and user utility. * **Feel comfortable iterating quickly, prototyping from Figma to AI-powered tools or lightweight code.** * **Have a product mindset:** understand business problems and translate them into clear conversational experiences. * **Thrive in ambiguous environments**, where rules aren’t always defined and exploration is required. ### **We value positively:** * **Prior experience on projects within large corporations** * **Fluency in written and spoken English.** ### **Why us and not others? Here’s what we offer you at Flat 101:** * **Real professional development:** personalized career plans, annual evaluations, access to specialized training, and ongoing mentorship to strengthen your strengths and help you achieve your goals. * **Flexibility and work-life balance:** intensive schedule from 8 AM to 3 PM \+ 1 flexible hour in the afternoon, summer intensive and reduced schedule (8 AM to 3 PM), and full trust to responsibly manage your time. * **27 working days of vacation:** we believe rest is fundamental, so we offer 5 extra days beyond the collective agreement. You’ll have full flexibility to choose your vacation dates. * **Flexible work formats:** remote, hybrid, or on-site, depending on team and project needs. We champion trust and autonomy in choosing the best way to work. Occasional availability to attend client offices in Madrid is required. * **Top-tier projects:** national and international projects with leading digital clients, where you can apply your talent and keep learning every day. * **Learning and shared knowledge:** internal and external trainings, research studies, mentoring, and an open-books culture that fosters collective growth. * **A leading and collaborative team:** diversity, mutual support, and proven expertise in CRO, analytics, design, and product. An environment where communication, empathy, and camaraderie are genuine. * **Diversity and equality:** we champion inclusive and equitable teams proud of their ideas. Flat 101 is an organization committed to equal pay and fair treatment. We believe diversity is a fundamental pillar of pluralism in any organization. * **Culture and DNA:** collaboration, teamwork, transparency, respect, and flexibility form our foundation. Innovation, continuous improvement, and empathy drive us, creating an environment where ideas are valued and people grow. * **Innovation and dissemination:** we produce nationally and internationally recognized research studies. We integrate artificial intelligence into our daily work to boost efficiency, creativity, and excellence. * **A unique environment:** close-knit, inclusive, motivating, and fostering a strong sense of belonging. You’ll work alongside passionate and committed people. * **Extra perks and benefits:** optional flexible compensation plan (private health insurance, meal vouchers, transportation, childcare), monetary bonuses, and event attendance support. We are a people-first company, where the entire team is routinely consulted for corporate decision-making. We aim to build and consolidate the best possible company — a benchmark in professional, human, and ethical terms… and we’d love to have you on board. Are you in?