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

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 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.

Responsibilities

• 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.

Requirements

• 8+ years of experience in software engineering, with a strong focus on system design and architecture.
• 6+ years of experience in system design and architecture, including designing scalable and complex systems.
• 2+ years of practical experience using AI tooling in development (e.g. LLMs, agents, automation workflows).
• 5+ years of experience in backend engineering, preferably with Golang or similar technologies.
• 3+ years of experience working with cloud and infrastructure, preferably AWS.
• 2+ years of experience in legacy system refactoring and modernisation.
• Strong product thinking and commercial awareness, with the ability to contribute beyond pure engineering.
• Proven experience working across the full stack and making pragmatic technical trade-offs.
• Experience leading projects or major technical initiatives.
• Ability to work effectively with incomplete information and shape direction.
• Strong ownership mindset with the ability to define and solve problems independently.

Nice to Have

• Experience building or integrating AI agents into engineering or product workflows.
• Exposure to fintech, payments, or platform-based systems.
• Experience working in high-growth or startup environments.
• Strong interest in leveraging AI to improve engineering velocity and system design.

Benefits

• Fixed Shifts: 12:00 PM - 9:30 PM IST (Summer) | 1:00 PM - 10:30 PM IST (Winter)
• No Weekend Work: Real work-life balance, not just words
• Day 1 Benefits: Laptop and full medical insurance provided
• Support That Matters:Mentorship, community, and forums where ideas are shared
• True Belonging: A long-term career where your contributions are valued

At Smart Working, you’ll never be just another remote hire.

Be a Smart Worker - valued, empowered, and part of a culture that celebrates integrity, excellence, and ambition.

If that sounds like your kind of place, we’d love to hear your story.