Senior PHP Fullstack Software Engineer

About ThriveCart

ThriveCart is a leading affiliate management, sales and checkout solution used by over 30,000 SMEs globally. ThriveCart is one of the largest GMV producers worldwide, boasting billions in annual transactions. We integrate with everything you use and have a simple, clean UI with numerous features that allow customers to build income from existing traffic and we are the highest converting cart for online businesses. Our business is growing, profitable, and backed by LTV SaaS Growth Fund VIII, and we are looking to expand our footprint amongst online businesses.

Location

Remote

The Role

We're looking for a strong Senior Full-stack PHP Software Engineer to join our team. You'll primarily extend and enhance both the backend services and frontend interfaces that power our funnel and onboarding builder—work that directly impacts how thousands of customers create and manage their checkout experiences.

This isn't greenfield. You'll be working in a mix of legacy (procedural PHP, jQuery) and modern (object-oriented PHP, Laravel/Symfony, React) code, shipping features that matter while helping us incrementally modernize the stack.

You'll work alongside a team of skilled engineers who care about clean code, pragmatism, and shipping reliable, usable systems.

What You'll Do

Week to week:

• Extend backend APIs, business logic, and database queries in PHP

• Build and enhance UI components using React and modern JS

• Ship features end-to-end: from requirements to production deployment

• Debug and fix issues in both legacy and modern code

• Write automated tests for backend and frontend flows

• Participate in code reviews and technical discussions

Over time:

• Take ownership of specific backend services, API endpoints, or frontend modules

• Help migrate legacy PHP/jQuery code to modern full-stack patterns

• Improve performance, reliability, and scalability across the stack

• Mentor other engineers through pairing and feedback

What We're Looking For

Technical:

• 5+ years shipping web apps in production

• Strong PHP fundamentals: OOP, MVC, Laravel/Symfony or similar frameworks

• Experience with full-stack development (PHP backend + React frontend)

• Comfortable navigating legacy PHP codebases and modernizing them

• Experience with REST APIs, relational databases (MySQL/PostgreSQL), and caching systems (Redis, Memcached)

• Can write automated tests (PHPUnit, Jest, or similar)

• Understanding of frontend basics: HTML, CSS, JavaScript

• Familiarity with deployment pipelines, Git, and CI/CD

Approach:

• You default to shipping incremental improvements over big rewrites

• You ask good questions when requirements are unclear

• You balance code quality with business needs

• You're comfortable working in codebases that aren't perfect

• You can explain technical tradeoffs to non-engineers

Nice to have:

• Experience building SaaS or e-commerce platforms

• Migrating legacy PHP apps to modern frameworks

• Experience with React or other modern frontend frameworks

• Familiarity with microservices, modular architectures, or API-first designs

• Cloud infrastructure experience (AWS, GCP)

The Team & Codebase

Editor 2.0 team is focused on our funnel and onboarding builder - a visual editor customers use to create their checkout experiences. It's a complex UI with real-time preview, component management, and integrations with the rest of the platform.

The stack:

• Legacy PHP (procedural) + modern PHP (Laravel/Symfony, OOP)

• React components for editor UI

• MySQL/PostgreSQL, Redis, RabbitMQ

• REST APIs, Composer, PHPUnit, Docker, CI/CD pipelines

• Deployments multiple times per week

The environment:

• Small, autonomous team (4–5 engineers)

• Real ownership of work – not just executing tickets

• Direct collaboration with product and design

• Thorough but constructive code reviews

• Remote-first, async-friendly culture

What Success Looks Like

First 30 days:

• Ship at least one meaningful full-stack improvement

• Understand key backend services and frontend flows

• Comfortable navigating legacy and modern code

First 60 days:

• Independently own and ship medium-sized features across the stack

• Provide helpful code reviews to the team

• Identify and propose improvements to full-stack workflows or code

First 90 days:

• Go-to person for specific subsystems or components

• Lead a refactor or performance/quality improvement initiative

• Measurably improve performance, reliability, or test coverage in your areas

Why This Role

• Impact: The editor is central to our customers' success – your work shows up immediately

• Growth: Strong team to learn from, real technical challenges to solve, clear path to senior/staff roles

• Ownership: You'll shape how we build and evolve this product, not just execute specs

• Pragmatism: We value shipping over perfection, but we care deeply about code quality

Apply

Tell us:

• What's a complex feature you've shipped in a legacy PHP codebase?

• How do you decide when to refactor vs. extend existing code?

• What's your experience with full-stack PHP and React development, SaaS platforms, or e-commerce systems?