Senior Full Stack AI Engineer (Remote, Contractual) [AS282]

About Smart Working At Smart Working , we believe your job should not only look right on paper but also feel right every day. This isn’t just another remote opportunity - it’s about finding where you truly belong, no matter where you are. From day one, you’re welcomed into a genuine community that values your growth and well-being. Our mission is simple: to break down geographic barriers and connect skilled professionals with outstanding global teams and products for full-time, long-term roles. We help you discover meaningful work with teams that invest in your success, where you’re empowered to grow personally and professionally. Join one of the highest-rated workplaces on Glassdoor and experience what it means to thrive in a truly remote-first world. About the Role We’re looking for a Senior Full Stack AI Engineer to join a small, high-impact team working at the intersection of product engineering and AI-driven solutions. This is not a traditional full-stack role. It’s a highly autonomous, product-focused position where you’ll take ownership from idea to production, working across backend, frontend, architecture, and AI-enabled features. You’ll operate in a fast-paced, low-process environment, translating ambiguous stakeholder needs into working solutions while balancing rapid delivery with long-term quality. You’ll work across both improving an existing Python-based application and building new AI-powered solutions, often prototyping and shipping within short timeframes. This role requires strong engineering judgment, a proactive mindset, and the ability to bring structure and best practices into an evolving environment. Responsibilities - Translate ambiguous stakeholder requirements into structured solutions, user flows, and deliverables - Design system architecture, making decisions around scalability, maintainability, and security - Build and deliver end-to-end features across frontend and backend with full ownership - Rapidly prototype AI-enabled solutions and evolve them into production-ready systems - Improve and scale an existing Python-based application, addressing backlog, performance, and UX gaps - Define and implement UX flows and usability improvements (not visual design, but user journeys) - Integrate with APIs, including AI-driven services, and design robust data flows - Apply secure development practices and ensure systems are reliable and maintainable - Balance speed of delivery with long-term engineering quality and structure - Contribute to and elevate engineering practices (architecture, SDLC, testing) through hands-on work - Collaborate with stakeholders and team members while operating with a high degree of independence Requirements - Strong experience with Python (5+ years) in production environments - Proven experience in system design and architecture (5+ years), including making trade-offs - Hands-on experience with AI-assisted development tools (e.g., Codex, Claude, or similar) in real workflows - Strong experience integrating APIs, including AI or data-driven services (3+ years) - Solid frontend experience with React and modern JavaScript/HTML (3+ years or equivalent frameworks) - Experience owning features or products end-to-end, from concept to delivery (3+ years) - Strong understanding of SDLC, engineering best practices, and code quality standards - Experience working in ambiguous environments and shaping requirements independently - Proven ability to prototype quickly and deliver at pace (2+ years) - Strong stakeholder communication skills and ability to translate business needs into technical solutions (5+ years) - Good understanding of UX flows and usability principles (2+ years) - Experience working with databases and data modelling (3+ years) - Understanding of secure development practices (3+ years) - Experience handling data pipelines or ETL processes (2+ years) - High ownership mindset with the ability to operate independently in a low-structure e