Ryz Labs is looking for a Senior Full Stack Engineer to join our client's small, fast-moving team, and help shape the next chapter of their platform.You’ll work across the stack, contributing to key technical decisions, building new features, and helping strengthen the foundation of a scalable, modern engineering culture. This role is perfect for an experienced engineer who loves hands-on development, thrives in startup environments, and wants to make an outsized impact on a mission-driven product.

Key Responsibilities:

• Design and ship features across the stack (frontend + backend) to deliver high-impact functionality quickly.

• Build integrations and workflows, developing APIs, data flows, and partner integrations that extend our client's ecosystem.

• Balance scrappy with scalable, leveraging no or low-code solutions where they accelerate delivery and investing in solid architecture where it matters most.

• Participate in code reviews, pair programming, and collaborative problem-solving.

• Help improve engineering processes and documentation as the team and product evolve.

• Prepare for growth by ensuring systems and processes meet investor diligence standards as the company approaches Series A.

Qualifications:

• 5+ years of full-stack engineering experience with expertise in both frontend and backend development.

• Frontend experience with React and JavaScript/TypeScript, including client-side integrations such as iframe-based embeds and Webflow.

• Backend experience with Python (FastAPI), Node.js microservices, REST APIs, and PostgreSQL.

• Strong foundation in data modeling, performance optimization, and data integrity.

• Proven ability to connect systems including APIs, AI and ML APIs, webhooks, data flows, and analytics tools such as Google Analytics 4.

• Knowledge in infrastructure and DevOps, including AWS services such as Lambda, API Gateway, CloudFront, CloudWatch, EC2, and RDS, as well as Docker, Vercel, and Cloudflare.

• Skilled in CI/CD pipelines, automated testing, structured logging, health checks, and monitoring.

• Strong sense of ownership and a pragmatic approach to balancing quality and delivery speed.

About RYZ Labs:

RYZ Labs is a startup studio built in 2021 by two lifelong entrepreneurs. The founders of RYZ have worked at some of the world's largest tech companies and some of the most iconic consumer brands. They have lived and worked in Argentina for many years and have decades of experience in Latam. What brought them together is the passion for the early phases of company creation and the idea of attracting the brightest talents in order to build industry-defining companies in a post-pandemic world.

Our teams are remote and distributed throughout the US and Latam. They use the latest cutting edge technologies in cloud computing to create applications that are scalable and resilient. We aim to provide diverse product solutions for different industries, planning to build a large number of startups in the upcoming years.

At RYZ, you will find yourself working with autonomy and efficiency, owning every step of your development. We provide an environment of opportunities, learning, growth, expansion and challenging projects. You will deepen your experience while sharing and learning from a team of great professionals and specialists.

Our values and what to expect:

• Customer First Mentality - every decision we make should be made through the lens of the customer.

• Bias for Action - urgency is critical, expect that the timeline to get something done is accelerated.

• Ownership -  step up if you see an opportunity to help, even if not your core responsibility.

• Humility and Respect - be willing to learn, be vulnerable, and treat everyone that interacts with RYZ with respect.

• Frugality - being frugal and cost conscious helps us do more with less.

• Deliver Impact - get things done in the most efficient way.

• Raise our Standards - always be looking to improve our processes, our team, our expectations. Status quo is not good enough and never should be.