Exit83

custom software development and AI innovation

SeniorFull-StackEngineer

Remote, CO CONTRACT Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for mid candidates.

The Brief

“Senior Full-Stack Engineer at Exit83. Skills: Full-Stack Engineering, PHP, Node.js, React, React Native, JavaScript, TypeScript, Database Management, Cloud Infrastructure, Migration Strategy. 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”

What You'll Achieve.

delivers advanced software solutions; shipping features in the legacy codebase; architect and build the system that replaces it; shipping features; deployment; monitoring; translate real user problems into technical solutions; innovation; operational excellence; client success; smarter solutions; outcomes; business outcomes

Industry & Context.

custom software development and AI innovation
Problems you'll solve

translate real user problems into technical solutions; Approach problems with curiosity and creativity

What They're Looking For.

Must Have

5+ years of professional software engineering experience, with a 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

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

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

Contribute to architecture and technical direction conversations as a peer

How You'll Work.

Team & Collaboration

Partner with product and customer-facing teams; Contribute to architecture and technical direction conversations as a peer; Build partnerships; share knowledge; contribute to shared goals

Communication Scope

listen actively; Listen deeply

Process & Methodology

scoping, owning features end-to-end

Full Job Description

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. 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

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