PHP Developer

The Blond HR

PHP Developer collaborating with AI infrastructure company, reviewing and annotating documents for AI learning. Emphasizing backend systems and technical oversight in a fully remote environment.

Posted 6/8/2026full-timeRemote • California • 🇺🇸 United StatesMid-LevelSenior💰 $20 - $110 per hourWebsite

Tech Stack

Tools & technologies

LaravelMySQLPHPPostgresSQLSymfony

About the role

Key responsibilities & impact

Join a dynamic and fast-growing AI infrastructure company that collaborates with Fortune 100 clients.
Accurately identify, classify, and annotate entities within PDF documents.
Assess solutions for correctness, clarity, security, performance, and adherence to the prompt.
Identify issues in application architecture, data modeling, API design, security, caching, and database usage.
Write strong explanations and model solutions that demonstrate best practices.
Evaluate, rank, and provide feedback on AI responses to improve correctness, security, readability, and contextual fit.
Ensure model integrity by testing AI outputs for inaccuracies, unsafe practices, and potential biases.

Requirements

What you’ll need

Bachelor’s degree or higher in Computer Science, Software Engineering, or a closely related technical field (or equivalent professional experience).
4+ years of professional experience developing production backend systems in PHP.
Expert-level proficiency in modern PHP (7.4/8.x+), including OOP, strict typing, namespaces, Composer, and common design patterns.
Strong backend fundamentals: HTTP, REST, authentication/authorization, sessions, caching, queues, and API design.
Deep experience with databases (e.g., MySQL/PostgreSQL), including schema design, indexing, query optimization, and transactions.
Experience with at least one major PHP framework (e.g., Laravel, Symfony) and knowledge of dependency injection, middleware, and ORM tradeoffs.
Security mindset with hands-on knowledge of secure coding practices (e.g., OWASP Top 10, input validation, SQL injection, XSS, CSRF, secrets handling).
Comfort with version control, CI/CD workflows, and automated testing (e.g., PHPUnit, integration tests, mocking strategies).
Prior experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.
Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.
Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle bugs in complex PHP/backend systems.

Benefits

Comp & perks

Shape the Future of AI
Your Schedule, Your Rules
Weekly Pay
Community Rewards

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PHPOOPstrict typingnamespacesComposerHTTPRESTAPI designMySQLPostgreSQL

Soft Skills

detail-orientedsystematicmethodicalcommunicationfeedbackevaluationclaritysecurity mindset