Staff PHP Software Engineer

Reference: BH-380p

Job Type: Permanent

Location: Remote (US)

Salary: up to $225,000 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
Provide technical leadership, mentorship, and code reviews
Define and uphold engineering standards and best practices
Collaborate cross-functionally to deliver scalable solutions
Take end-to-end ownership of systems, including production support
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 frontend where possible, or collaborate with frontend developers, ensuring smooth backend integration
Experience implementing automated testing strategies
Experience mentoring engineers and contributing to technical direction

Key Experience:

10+ years backend engineering (production systems)
Strong PHP and mandatory 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/GKE/EKS/AKS)
Testing + quality tooling (PHPUnit, PHPStan, Psalm, GrumPHP)
Performance tuning and profiling (e.g. Blackfire, XHProf)
Experience with Elasticsearch, including indexing strategies and search optimisation

Desirable Experience

Highly competitive salary + equity designed to rival top-tier (FAANG-level) compensation
High-impact Staff 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

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