Senior PHP Backend Engineer – Drive Platform Modernisation

Shiftbase; Zoetermeer; Hybrid; EUR 56,000 - 78,000; Full time

Job summary

Shiftbase is seeking a Senior Backend Engineer in Zoetermeer, Netherlands, for a hybrid role. You’ll modernise a mature platform, improve reliability and performance, and drive architectural decisions across the backend ecosystem.

You’ll evolve a monolithic codebase toward modular services, enabling faster iteration and better user experiences while maintaining product quality and scale.

Qualifications

• Deep backend engineering experience on complex, high-scale systems.
• Experience with hexagonal architecture, domain-driven design, or similar patterns.

Responsibilities

• Drive technical excellence with scalable solutions.
• Define testing strategies and improve observability.
• Mentor engineers and support onboarding.
• Shape delivery practices to improve team velocity using data-informed decisions.

Skills

PHP architecture

SQL design

Legacy modernization

Monolith to services

Testing legacy

Job description

Shiftbase is seeking a Senior Backend Engineer in Zoetermeer, Netherlands, for a hybrid role. You’ll modernise a mature platform, improve reliability and performance, and drive architectural decisions across the backend ecosystem.

You’ll evolve a monolithic codebase toward modular services, enabling faster iteration and better user experiences while maintaining product quality and scale.