Senior Software Engineer (Customer Interfaces)

• As a Senior Full Stack Engineer for Customer Interfaces in San Francisco, you will lead the evolution of Adyen’s experience platform, building the foundational frameworks, AI-integrated guardrails, and component libraries that empower global teams to ship secure, conversational financial experiences
• We are looking for a product-minded engineer who can build end-to-end streaming, multi-modal user interfaces while architecting backend agentic workflows (specifically Tool-use, Chains, and Policy Layers)
• In this role, AI is not a standalone job title or a hypothetical sandbox; it is an integrated engineering capability used to transform natural language inputs into authenticated, secure financial operations
• Drive Intelligent Customer Interfaces: Lead the next generation of UIs at Adyen, building Dynamic/Agentic UI components in Vue/Preact that adapt in real time beyond static dashboards
• Architect backend integration: Design performant Java services that orchestrate data pipelines and integrate with Agentic workflows to handle tool-use, chain execution, and state synchronization
• Raise the Bar: Set engineering standards for the team and company. Provide mentorship through problem decomposition, research methodology, and code review. Champion reproducibility, documentation, and rigorous evaluation practices across the AI organization
• Engineer Zero-Trust AI Guardrails: Architect the security and policy enforcement layers for Agentic workflows, maintaining strict financial data privacy and reducing hallucinated operations from touching critical backend logic
• Partner on Product Strategy: Collaborate directly with Product Management to identify high-impact merchant workflows, translating ambiguous merchant problems into simple, high-velocity technical solutions
• Maintain Operational Rigor: Own your code in production. Monitor live performance, minimize end-to-end streaming latency, champion security compliance, and lead root-cause analysis for live incidents
• Engineering AI for Production: Move beyond the “sandbox”. Build robust evaluation frameworks, latency-optimized streaming, and observability layers that ensure AI-driven features are reliable, secure, and ready for critical financial operations
• Distributed Excellence: Proven track record of collaborating across global engineering hubs, effectively aligning remote teams on technical decisions, and driving documentation-first communication

Benefits

• Global exchange program
• Weekly happy hour
• Delicious healthy lunches
• Phantom share package
• Yearly trip to Amsterdam
• Paid holidays
• Work from home opportunities- Full-Stack Technical Depth: Deeply proficient in Java for high-concurrency backend services, with architectural competence to integrate and support Agentic workflows (Python). Experienced with Vue/Preact for complex, stateful web applications
• Security-First Mindset: A “security-by-design” approach to handling sensitive financial data, user authorization, and zero-trust access in web environments
• High Ownership & Influence: Comfortable driving cross-team technical alignment, mentoring engineers, conducting rigorous code reviews, and collaborating with global engineering hubs
• Applied AI Systems & Safety: Hands-on experience (or strong architectural competence) with production-grade Agentic AI integrations, including policy layers, evaluation frameworks, RAG architectures, and deterministic execution boundaries
• 7+ years of professional software engineering experience in a fast-paced technology environment
• Currently operating as a Senior Software Engineer (or equivalent level) with a track record of taking full ownership of complex, distributed web applications
• Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application!
• Experience working in monorepo environments and managing complex dependency chains across large-scale distributed systems- Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 5 business days. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role