Principal Full-Stack Engineer (Next.js / Node.js, SaaS Re-Architecture)

FinOpsly is the AI brain behind cost decisions across  cloud ,  data , and  AI  — built to think, plan, and act. Purpose-built for today’s complex enterprise environments, we  unify  FinOps across AWS, Azure, Snowflake, Databricks, and modern AI workloads — enabling organizations to move from cost reporting to cost action.

Role Summary

We are seeking a Principal Full-Stack Engineer to lead the re-architecture of our PHP-based SaaS application into a modern, scalable, and robust Next.js / Node.js platform. This role blends the depth of an architect with the execution ability of a senior engineer. You will set the technical direction, design the new architecture, and also be an active contributor—writing code, reviewing code, and driving implementation.

This is not a pure design role. You will be expected to lead by doing , ensuring scalability, performance, and reliability while guiding a small team to deliver at startup velocity.

What You’ll do :

• Analyze the current PHP application and identify scalability, performance, and reliability gaps.
• Design a Next.js / Node.js-based SaaS architecture that supports multi-tenancy, scale, and high availability.
• Define and enforce best practices for modular, secure, and maintainable full-stack development.
• Establish standards for APIs, services, and system interoperability.
• Actively contribute to the codebase, building core modules and reviewing critical code.
• Optimize front-end rendering (Next.js SSR / SSG) and backend APIs (Node.js / TypeScript) for efficiency and performance.
• Implement scalable service and data interaction patterns for high-throughput SaaS workloads.
• Collaborate with Data Engineering and DevOps to establish CI / CD pipelines, automated testing, monitoring, and deployments.
• Ensure iterative delivery while laying the foundation for long-term scalability.

Leadership & Delivery

What You’ll Bring

Preferred :

Success Criteria