The Role
As a Full Stack Software Engineer, you will own key backend and frontend components, optimize performance, and contribute to technical decisions.
Summary Generated by Built In
Remote position - From Argentina or Uruguay
Ryz Labs is looking for a Lead Full Stack Engineer to join our client's small, fast-moving team, and help shape the next chapter of their platform. You’ll stay deeply involved in the codebase while steering technical decisions, mentoring teammates, and laying the groundwork for an engineering culture built on collaboration, pragmatism, and innovation. This role sits at the intersection of hands-on building and strategic leadership—perfect for someone excited to grow with a mission-driven, scaling startup.
Key Responsibilities:
- Lead technical direction and act as the primary engineering partner to product and leadership.
- 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.
- Mentor and elevate the team through code reviews, pair programming, and thoughtful technical guidance.
- Shape the engineering culture by defining practices that strengthen reliability, performance, and development velocity.
- Prepare for growth by ensuring systems and processes meet investor diligence standards as the company approaches Series A.
Qualifications:
- 6+ 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.
- Successful track record in early-stage startups, ideally from pre-Series A to Series A, and experience leading or mentoring small engineering teams of three to six engineers.
- 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.
- Expertise 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.
- Ability to balance speed with technical rigor, understanding when to ship quickly and when to harden core systems.
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.
Top Skills
AWS
Jotform
Postgres
Python
React
Typescript
Webflow
Zapier
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The Company
What We Do
Where startups soar! We're not just building startups - we're crafting the future. From ideation to execution, we provide the blueprint for startup success. We specialize in nurturing startups from the ground up, and supercharging existing ones with our top-tier technical talent solutions. Join us at Ryz Labs, where we turn promising ideas into thriving businesses. Let's shape the future of innovation together!
