Senior Full-Stack Engineer

You'll be on a high-impact team building a vertical SaaS platform that thousands of service businesses rely on every day. This is a hands-on senior role with real influence over product direction, architecture, and the engineering culture as the team scales.

The platform is mid-migration from a mature PHP codebase to a modern Node.js and React stack, with a React Native mobile app already in production. You'll work across both sides of that transition: shipping features in the legacy codebase while helping architect and build the system that replaces it. This is not a greenfield rewrite, it's a thoughtful migration done in flight, and you'll help shape how it gets done.

What you'll do:

• Design and ship full-stack features across the platform
• Drive meaningful pieces of the PHP to Node.js and React migration, including architecture decisions, patterns, and tooling for the new stack
• Own features end-to-end, from scoping with product to deployment and monitoring
• Partner with product and customer-facing teams to translate real user problems into technical solutions
• Contribute to the best practices in the modern stack: testing strategy, code review standards, CI/CD, developer experience
• Contribute to architecture and technical direction conversations as a peer, not a reviewer

• -5+ years of professional software engineering experience, with a strong full-stack track record
• Production experience with PHP
• Solid experience with Node.js and modern JavaScript or TypeScript
• Working knowledge of React for web
• Experience with relational databases (MySQL or PostgreSQL)
• Track record of owning features end-to-end on a small team, including scoping, building, shipping, and supporting in production
• Result-oriented and proactive, comfortable working with autonomy

Nice to Have:

• Experience leading or contributing to a large-scale codebase migration (PHP to Node/React or similar)
• REST API design and third-party integrations (payments, mapping, routing, scheduling)
• Cloud infrastructure experience (AWS, GCP, or similar)
• Comfort with CI/CD pipelines, automated testing strategy, and DevOps practices

How You’ll Be Successful

• Passion for Impact: Understand how your work contributes to innovation, operational excellence, and client success.
• Challenge the Expected: Approach problems with curiosity and creativity, learning from experimentation and driving smarter solutions.
• Integrity and Respect: Lead with empathy, listen actively, and take responsibility for outcomes.
• Commitment to Quality: Set and uphold high standards; seek feedback and continuous improvement.
• Collaborative Mindset: Build strong partnerships, share knowledge, and contribute to shared goals.
• Customer-Centered Thinking: Listen deeply, understand needs, and translate them into meaningful business outcomes.

EXIT83, a leader in custom software development and AI innovation, delivers advanced software solutions for strategic, growth-focused initiatives. Positioned at the nexus of business and technology, our presence spans 12 countries, reflecting our global commitment to delivering cutting-edge technologies. With nearly 20 years of international experience, we offer our expertise to a diverse clientele, from Fortune 500 companies, major government contractors to startups. Our team, which includes former Microsoft engineers, brings deep experience in development, strategy, and systems integration. At EXIT83, we're more than participants in the technology sector; we're driving its evolution, ensuring every project we undertake is a step towards a more innovative future.