Senior PHP Developer
About the Role
We are looking for an experienced Senior PHP Developer to join our team and take ownership of critical components of a large-scale, high-load platform processing tens of thousands of requests per second and terabytes of data daily.
Our core product is a powerful enterprise monolith with a modular architecture. As the business continues to grow, we focus on maintaining exceptional reliability, performance, and scalability while continuously evolving the platform.
You will work alongside a team of senior-level engineers, contributing to architectural decisions, optimizing distributed processes, and driving engineering excellence across the organization.
What You'll Do
Core Platform Development
- Design, develop, and optimize key modules of a high-performance PHP platform.
- Ensure reliability, maintainability, and scalability of the codebase.
- Take technical ownership of critical business domains and services.
Architecture & System Design
- Participate in architectural decision-making for a large enterprise monolith.
- Design integration patterns with databases and external systems.
- Improve modularity and maintain clear boundaries between platform components.
Data Layer Optimization
- Design efficient data models and storage strategies.
- Optimize MySQL queries and ORM performance under heavy production workloads.
- Work with large datasets and contribute to analytical solutions using ClickHouse.
Event-Driven Architecture
- Design and maintain asynchronous processing solutions using Apache Kafka.
- Build reliable integrations between internal services and external systems.
Observability & Reliability
- Integrate telemetry into applications using OpenTelemetry-based solutions.
- Analyze application performance and identify bottlenecks.
- Troubleshoot and resolve production incidents.
- Contribute to monitoring, logging, and tracing practices.
Engineering Excellence
- Conduct meaningful code reviews and mentor fellow engineers.
- Promote high development standards and best practices.
- Collaborate closely with Product Managers, QA Engineers, DevOps, and other stakeholders.
Requirements
- 5+ years of commercial PHP development experience.
- Strong knowledge of PHP 8.x and modern backend development practices.
- Deep understanding of OOP, SOLID principles, design patterns, and clean architecture.
- Experience building and maintaining large-scale backend systems.
Technical Skills
- Strong experience with Symfony and/or Laravel.
- Advanced knowledge of MySQL, including:
- Query optimization
- Indexing strategies
- Replication
- Locking mechanisms
- High-volume data processing
- Experience with Redis.
- Hands-on experience with Apache Kafka.
- Understanding of observability, logging, and application profiling.
- Familiarity with Docker and Kubernetes.
- Experience working in CI/CD environments.
Nice to Have
- Experience with ClickHouse at scale.
- Experience building analytics or data lake solutions.
- Experience refactoring large monolithic applications into modular domains.
- Knowledge of OpenTelemetry and distributed tracing.
Soft Skills
- Strong ownership mindset and accountability.
- Ability to work independently and make technical decisions.
- Excellent problem-solving and analytical skills.
- Strong communication skills and ability to collaborate with senior engineers and cross-functional teams.
Tech Stack
- PHP 8.x
- Symfony / Laravel
- MySQL
- Redis
- Apache Kafka
- ClickHouse
- Docker
- Kubernetes
- Prometheus
- Grafana
- OpenTelemetry
What We Offer
- Opportunity to work on a high-load platform handling massive volumes of traffic and data.
- A team composed of senior-level engineers.
- High level of technical ownership and impact.
- Remote-first environment with flexibility across Europe.
- Hybrid and on-site opportunities in Prague, Czech Republic.
- Long-term collaboration on challenging engineering problems.
Benefits
- 20 vacation days and 5 family days yearly
- Flexible start to the workday
- Support from a professional corporate coach and psychologist
- Regular internal and external activities, workshops, trips, and corporate events
- Access to our internal knowledge base, meetups, and team-building activities
- Ongoing training in new technologies and continuous professional development support
