Senior PHP Engineer

Reference: BH-379p

Job Type: Permanent

Location: Remote (US)

Salary: up to $190,000 per annum

About The Client:

• Our client is an innovative HealthTech organisation building scalable, high-performance platforms within a complex, data-rich environment.
• Their systems process large volumes of data, integrate across distributed services, and enable efficient, reliable decision-making across critical clinical and operational workflows.
• With strong backing and an experienced leadership team, they are continuing to invest heavily in platform scalability, performance, and long-term evolution.

Responsibilities:

• Own and evolve platform architecture within a Symfony-based system, making high-impact decisions across scalability, performance, and maintainability
• Collaborate cross-functionally to deliver scalable solutions
• Strong communication skills and ability to work cross-functionally.
• Design and build backend services and internal APIs (service-to-service)
• Design and optimise relational databases, including query tuning, indexing, and performance debugging
• Build and scale data ingestion pipelines and event-driven workflows using GCP Pub/Sub
• Diagnose and resolve performance bottlenecks across PHP, MySQL, and data pipelines using tools like Blackfire / XHProf
• Work with Elasticsearch for data serving and fuzzy search, including indexing and data synchronisation
• Contribute to the frontend where possible, or collaborate with frontend developers, ensuring smooth backend integration
• Experience implementing automated testing strategies

Key Experience:

• 8+ years backend engineering (production systems)
• Strong PHP and Symfony expertise
• Build and maintain internal APIs
• Strong understanding of scalability, concurrency, and reliability
• Experience with data-heavy systems and ingestion pipelines
• Clear communication and cross-team collaboration
• Experience working with distributed systems and scalable architectures
• Strong MySQL optimisation (queries, indexing, large datasets)
• Experience with distributed and event-driven systems (Pub/Sub)
• Hands-on GCP (Cloud SQL, Pub/Sub, Redis/Memorystore), or equivalent on other cloud platforms
• Containerised environments (Docker, Kubernetes (i.e: GKE/EKS/AKS))
• Testing + quality tooling (i.e: PHPUnit, PHPStan, Psalm)
• Performance tuning and profiling (i.e: Blackfire, XHProf)
• Experience with Elasticsearch, including indexing strategies and search optimisation

Desirable Experience

• Experience with PHP API Platform
• Familiarity with event-driven systems and asynchronous processing patterns.
• Experience with multi-tenant systems or rules-based configuration models.
• Exposure to frontend UI tooling (EasyAdmin, React, Next.js)
• Experience in improving or formalising load and performance testing practices.

Why Join?

• Highly competitive salary + equity designed to rival top-tier (FAANG-level) compensation
• High-impact Senior role with ownership of a core, data-intensive platform
• Work on complex, large-scale systems (ingestion, performance, distributed architecture)
• Strong engineering culture focused on quality, performance, and pragmatic decision-making
• Remote-first environment with flexibility and autonomy

Benefits

• Generous Paid Time Off (PTO) to support work-life balance
• Comprehensive health, vision, and dental insurance for you and your family
• Life and disability insurance for financial security
• Simple IRA matching to support long-term financial goals
• Professional development budget (conferences, courses, certifications)
• Wellness programs supporting physical and mental health