Senior / Staff Full Stack Engineer (AI & Systems), (Remote, Full-Time) [AS228]

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.

We are looking for a Senior / Staff-level Full Stack Engineer with strong system design expertise and practical experience applying AI tooling in real-world development environments. This is a high-impact role focused on designing and evolving platform architecture, modernising legacy systems, and integrating AI-driven capabilities into both engineering and product workflows.
You will operate with a high degree of autonomy in a fast-paced, low-process environment, contributing not only to technical decisions but also to product direction and commercial outcomes.

This role requires a pragmatic mindset, the ability to work with ambiguity, and a strong sense of ownership in defining and solving complex problems.

• Design and evolve system architecture across platform infrastructure, including complex and high-scale environments.
• Lead architectural decisions and make pragmatic trade-offs across the full technology stack.
• Refactor and modernise legacy codebases using AI-assisted development workflows.
• Build and integrate AI agents and automation into development, product, and operational processes.
• Contribute to product strategy and commercial decisions, not just technical execution.
• Work across backend systems, primarily using modern backend technologies such as Golang where applicable.
• Collaborate with cross-functional stakeholders to define problems and shape technical direction.
• Operate independently in a high-velocity environment, driving initiatives from concept to delivery.
• Ensure systems are scalable, maintainable, and aligned with long-term business goals.
• Leverage cloud infrastructure to support system performance, reliability, and growth.