About Equine Software Group
Equine Software Group is building a connected software ecosystem for the global equestrian industry. Through Hopoti, Hippocrates and Equilab, we support more than 1.6 million riders and approximately 600 equestrian businesses across Europe, North America and other international markets.
Our products help riding schools, professional stables and equine service providers manage lessons, bookings, payments, horse care and communication while helping riders track their training, connect with their stables and participate more fully in equestrian life.
We focus on sustainable growth, strong products and creating lasting value for our customers, riders and horses.
The opportunity
We are looking for an experienced, hands-on Senior PHP Engineer to take ownership of the Hippocrates platform.
Hippocrates serves riding schools, professional stables and mobile equine professionals with three established products: Academy, ProStable and nextGen, plus the myHippo customer portal. The platform is revenue generating, stable and well documented, with a modern Laravel and React booking application already in place alongside larger legacy applications.
Our founding developer, who wrote most of the codebase, will be leaving at the end of 2026. You will join while he is still here, learn the system from him directly and become the engineer who owns its future. This means keeping the platform secure and reliable, raising engineering standards and modernizing it step by step, not starting again from scratch.
The role works closely with group leadership and the product and engineering teams across Equine Software Group.
What you will do
Take ownership of the platform
- Work alongside the founding developer through a structured handover, then take over technical ownership of the Hippocrates codebase.
- Become the go-to person for architecture, technical decisions and production issues.
- Keep documentation, architecture notes and operations runbooks accurate and current.
Strengthen security and reliability
- Lead security improvements across the platform, with a particular focus on payment and authentication flows.
- Apply secure coding practice in line with the OWASP Top 10 and ASVS.
- Make sure payment processing is correct, consistent and resilient under error conditions.
- Harden infrastructure and configuration alongside our hosting and DevOps setup.
Raise engineering standards
- Build automated test coverage for authentication, booking and payment logic, and run it in CI.
- Break up large classes, remove dead code and consolidate duplicated logic.
- Introduce dependency and secret scanning, code review and clear release practices.
Modernize step by step
- Continue building out the modern Laravel and React booking application.
- Maintain and harden the legacy procedural PHP applications while gradually moving functionality onto the modern stack.
- Bring business logic and stored procedures under source control and test coverage.
- Design APIs and integration points that connect Hippocrates with the other products in the group.
What we are looking for
- At least 6 years of professional PHP experience, including modern PHP 8 and Laravel.
- Experience maintaining and improving large legacy PHP codebases, including procedural code written without a framework.
- Strong SQL skills, ideally with Microsoft SQL Server, including stored procedures, query performance and indexing.
- A solid grounding in web application security and the OWASP Top 10.
- Experience with payment integrations, webhooks and transactional data where correctness matters.
- Hands-on experience writing automated tests with PHPUnit and running them in CI/CD pipelines.
- Comfort with Windows Server and IIS hosting, Cloudflare, and infrastructure as code tools such as Terraform and Ansible.
- Working knowledge of React and TypeScript.
- Good judgment about when to refactor, when to rebuild and when to leave something alone.
- Clear written communication and the discipline to document decisions.
- Comfort using AI coding tools to work faster and understand unfamiliar code.
- Fluency in English. Swedish is a strong plus, as many customers, integrations and parts of the codebase are Swedish.
- Based in Sweden or Poland.
Experience in the equestrian industry is welcome but not required.
What success could look like
During the first 12 months, the Senior PHP Engineer will have:
- Completed a thorough handover and become the technical owner of the Hippocrates platform.
- Delivered the priority security and payment-integrity improvements.
- Put meaningful automated test coverage in place for payments, authentication and booking.
- Brought architecture and operations documentation fully up to date.
- Agreed and started a practical modernization and integration roadmap for the platform.
Why join us?
This is an opportunity to take ownership of an established, revenue-generating platform used every day by hundreds of equestrian businesses, at a time when it is ready for its next stage.
You will have real autonomy, a well documented codebase to start from and the chance to shape how Hippocrates grows within a connected international software group.