Senior Frontend Developer

About the role

There are NO limits to your career: come shape the future and be part of a truly unique global culture at OutSystems! Senior Front-End Developer | Professional Services As a Senior Front-End Developer , you will be at the forefront of Agentic Workflow Orchestration . In this role, you aren't just building interfaces; you are designing the collaborative space where humans and AI agents interact. Your mission is to leverage OutSystems to build high-performance, accessible, and low-cognitive-load experiences that solve complex business problems. The Mission: Agentic Excellence Your work will focus on the North Star of Professional Services: Reducing User Cognitive Load . You'll build UI patterns that make autonomous agent actions transparent, trustworthy, and seamless for the end-user. Core Responsibilities Live Style Guide (LSG) Engineering: Build and maintain scalable LSGs and UI patterns. You won't just deliver a static library; you will build the "rules of engagement" that allow AI agents to correctly assemble customer-branded interfaces. Agentic Orchestration: Act as the supervisor of AI agents. You will prompt, audit, and orchestrate agents to generate code, troubleshoot UI bugs, and automate repetitive front-end tasks, ensuring the output delivers value to our customers. Prompt Engineering for UI: Develop and refine the system prompts used to generate OutSystems logic and UI. You are responsible for ensuring the AI understands the "governance" of the customer's style guide. Technical Troubleshooting: Solve the "impossible" front-end bugs. Whether it's a CSS race condition in a legacy app or a non-deterministic error in a new agentic workflow, you are the final point of escalation. Customer Workshops & Coaching: Lead workshops on Front-End best practices and Accessibility (WCAG). Transition customer teams from manual "pixel-pushing" to an "Orchestrator" mindset. Work directly with customers to troubleshoot challenging front-end issues and refine their front-end strategy. Mentor junior developers in the transition from traditional development to AI-assisted coding. What We Look For Advanced knowledge of HTML, CSS, and JavaScript. Proven experience developing high-quality applications using the OutSystems platform (OutSystems UI & Mobile UI). Ability to optimize applications for speed and search engine visibility. Experience implementing and a strong commitment to accessibility (WCAG) and creating tools that work for everyone. AI code fluency: Ability to read, debug, and optimize code generated by LLMs. You understand the "hallucination" patterns of AI-generated front-ends. Advanced prompt engineering: Experience structuring multi-step prompts to achieve specific, high-quality technical outcomes. Systemic thinking: You don't just fix a bug; you fix the prompt or the pattern so the bug never happens again. Fluent in English (mandatory) with the ability to explain technical concepts to diverse audiences. Ability to work effectively across different cultures and geographies in an agile environment. A proactive attitude towards coaching other developers and contributing to the evolution of the Front-End practice. Leadership by example, strong analytical thinking, and a focus on user-centric design. 5+ years of experience in OutSystems and experience in enterprise software development. Certifications: OutSystems Expert Developer; Specialist Agentic AI certification preferred, Front-end Developer Specialist. More about OutSystems OutSystems is a leading AI Development Platform built for the enterprise. Global organizations trust OutSystems to rapidly build mission-critical apps and agents, modernize legacy processes with agentic systems, and govern their entire AI portfolio across complex regulatory environments, all on one unified platform. As the future becomes agentic, our customers need us now more than ever. While AI has opened the door to extraordinary possibilities, most large organizations find themselves stuck on one side of the "enterprise gap" because AI by itself doesn't solve their complex use cases and business challenges. OutSystems bridges the "enterprise gap" by combining the speed of generative AI with a deterministic, enterprise-grade framework. We provide the tools for teams of any size to deliver high-quality, reliable AI solutions that drive real business impact. We are looking for passionate, talented, and motivated people to join us as we empower organizations to build, deploy, and scale the next generation of enterprise software. While we are leading the charge into the agentic era, our mission is broader: we are the platform enterprise leaders trust to evolve their entire business, accelerating innovation through secure, governed human-AI collaboration. OutSystems is a global company, with more than 900k developer community members, 1,700 employees, more than 600 partners, and thousands of active customers in over 75 countries and across 21 industries. Founded