What Does a PHP Developer Do?
A PHP Developer builds, tests, maintains, and improves server-side applications written primarily in PHP.
They commonly work on web applications, APIs, SaaS products, e-commerce systems, content-management platforms, and internal software.
Typical PHP Developer responsibilities include:
- Building backend applications
- Developing REST APIs
- Writing application business logic
- Creating database models
- Writing SQL queries
- Building authentication systems
- Managing user permissions
- Integrating third-party APIs
- Processing payments
- Handling webhooks
- Building background jobs
- Working with queues
- Implementing caching
- Writing automated tests
- Debugging production problems
- Improving application performance
- Refactoring legacy code
- Fixing security vulnerabilities
- Managing Composer dependencies
- Reviewing pull requests
- Creating database migrations
- Maintaining Laravel or Symfony applications
- Working with front-end developers
- Supporting production deployments
The exact role depends heavily on the application.
One PHP Developer may spend most of their time inside Laravel and PostgreSQL.
Another may maintain a large WordPress ecosystem.
Another may work on a Symfony application with RabbitMQ, Redis, Docker, and multiple services.
Hire for the PHP environment you actually operate rather than treating every PHP résumé as interchangeable.
When Should You Hire a PHP Developer?
A dedicated PHP Developer becomes valuable when PHP is an important part of your web stack and the application needs ongoing engineering ownership.
You're Building a Laravel or Symfony Application
If Laravel or Symfony defines your backend architecture, someone with direct framework experience can contribute much faster than a developer learning the entire ecosystem after joining.
Your Existing PHP Application Needs More Development Capacity
A growing feature backlog can create bottlenecks around:
- APIs
- Database changes
- Integrations
- Backend logic
- Performance
- Bug fixes
Adding dedicated PHP capacity allows existing engineers to distribute that workload.
You're Maintaining a Large Existing PHP Codebase
Many companies run valuable PHP systems that have been developed over several years.
Those applications still need:
- New features
- Security updates
- Dependency upgrades
- Performance improvements
- Testing
- Refactoring
A developer comfortable with both legacy and modern PHP can improve the system incrementally.
You're Modernizing Legacy PHP
Older PHP applications may contain:
- Mixed HTML and business logic
- Global state
- Deprecated functions
- Limited typing
- Weak test coverage
- Manual dependency management
Modernization doesn't always require a complete rewrite.
An experienced developer can introduce better architecture in stages.
You're Upgrading PHP Versions
PHP upgrades can expose:
- Deprecated behavior
- Dependency incompatibilities
- Framework requirements
- Type issues
- Library conflicts
Someone experienced with upgrade projects can assess the application and reduce migration risk.
Your Laravel Application Has Become Difficult to Maintain
Rapid Laravel development can eventually produce:
- Huge controllers
- Excessive model logic
- Duplicated queries
- Large service classes
- Difficult-to-follow events
- Slow test suites
A senior developer can improve architecture without discarding the framework conventions that make Laravel productive.
Your Application Is Slow
PHP performance problems may come from:
- Slow SQL
- N+1 queries
- Missing indexes
- Excessive external API calls
- Unnecessary rendering
- Poor caching
- Large background workloads
An experienced PHP Developer can profile the system and address the actual bottleneck.
You're Building or Expanding APIs
A PHP Developer can take ownership of:
- API routes
- Validation
- Authentication
- Authorization
- Serialization
- Pagination
- Documentation
- Third-party integrations
Your WordPress Project Requires Real Development
Basic page editing doesn't require a general PHP engineer.
Complex WordPress products may.
Custom plugins, integrations, APIs, performance work, and advanced platform extensions often require deeper PHP experience.
You're Scaling an E-Commerce Platform
Payment, inventory, checkout, fulfillment, subscriptions, and third-party integrations create backend complexity.
Dedicated PHP ownership can help keep those workflows reliable as volume increases.
What Qualifications Should a PHP Developer Have?
Strong PHP Developers combine modern language knowledge with practical web-development and production experience.
Modern PHP Fundamentals
Candidates should understand:
- Types
- Classes
- Interfaces
- Traits
- Namespaces
- Enums
- Attributes
- Exceptions
- Composer
Someone whose PHP knowledge stops with procedural scripts may struggle in a modern application.
Object-Oriented Programming
Most modern PHP frameworks rely heavily on OOP.
Candidates should understand:
- Encapsulation
- Interfaces
- Composition
- Inheritance
- Dependency injection
The strongest developers use those tools to make code easier to change rather than creating unnecessary abstraction.
Laravel or Symfony
Match framework expertise to your application.
Laravel commonly involves:
- Eloquent
- Routing
- Validation
- Queues
- Events
- Authentication
- Testing
Symfony may involve:
- Dependency injection
- Doctrine
- Components
- Messenger
- Console
- Security
Composer
Modern PHP developers should be comfortable managing dependencies with Composer.
Database Knowledge
Candidates should have practical experience with databases such as:
They should understand:
- Joins
- Indexes
- Transactions
- Relationships
- Query plans
- Database migrations
ORM Experience
Laravel developers commonly use Eloquent.
Symfony developers frequently work with Doctrine.
Candidates should understand the convenience ORMs provide while still recognizing when generated queries become inefficient.
API Development
Strong backend candidates should understand:
- REST
- HTTP
- Authentication
- Authorization
- Validation
- Pagination
- Error responses
- Idempotency
Testing
Look for experience with:
- PHPUnit
- Pest
- Unit tests
- Feature tests
- Integration tests
- API tests
Ask how candidates choose what to test instead of simply asking whether they use PHPUnit.
Security
PHP Developers should understand common web vulnerabilities and defenses around:
- SQL injection
- Cross-site scripting
- CSRF
- Authentication
- Authorization
- File uploads
- Secret management
Caching
For higher-traffic applications, experience with Redis or another caching system can be valuable.
Queues
Laravel Horizon, Redis, RabbitMQ, or other queue technologies may matter when the application has significant asynchronous workloads.
Static Analysis
PHPStan or Psalm experience can be useful when companies want stronger type safety and code-quality checks.
Docker
Docker experience can help developers work with consistent development and production environments.
Git
Candidates should be comfortable with:
- Branches
- Pull requests
- Code review
- Merge workflows
CI/CD
Relevant experience may include:
- GitHub Actions
- GitLab CI
- Jenkins
- Other deployment pipelines
Cloud and Hosting
Depending on the application, candidates may need experience with:
- AWS
- Azure
- Google Cloud
- VPS environments
- Managed PHP platforms
Debugging
Strong developers should know how to investigate problems through:
- Logs
- Stack traces
- Database queries
- Profilers
- Debuggers
- Monitoring tools
Communication
PHP Developers frequently work with:
- Front-End Developers
- Product Managers
- QA Engineers
- DevOps Engineers
- Designers
- Other backend developers
Strong communication helps them clarify requirements and discuss technical tradeoffs before they become expensive.
How Much Does a PHP Developer Cost?
PHP Developer compensation depends on seniority, framework expertise, architecture depth, database skills, and the complexity of the application.
South's current role listings show an all-in monthly rate of approximately $4,650 for PHP Developer talent in Latin America, with potential savings of around 47% compared with the U.S. benchmark.
Your actual rate will depend on the developer you need.
Junior PHP Developer
Junior PHP Developers can contribute to:
- Bug fixes
- CRUD functionality
- Existing Laravel features
- Basic APIs
- Database changes
- Tests
They work best when senior developers can provide code review and architectural guidance.
Mid-Level PHP Developer
Mid-level developers can generally own complete application features.
They may handle:
- APIs
- Eloquent or Doctrine
- Integrations
- Authentication
- Queues
- Testing
- Production troubleshooting
Senior PHP Developer
Senior PHP Developers can take ownership of larger technical decisions.
They may:
- Design application architecture
- Lead modernization
- Improve performance
- Plan upgrades
- Establish testing practices
- Review security
- Mentor developers
- Improve database architecture
Specialized PHP Developers
PHP expertise can branch into several areas.
Examples include:
- Laravel Developers
- Symfony Developers
- WordPress Developers
- E-Commerce Developers
- API-focused PHP Developers
A strong Laravel candidate isn't automatically a strong WordPress specialist, and the reverse is also true.
How Do You Interview a PHP Developer?
A PHP Developer interview should test modern PHP, architecture, databases, framework experience, testing, security, and practical debugging.
Avoid spending the interview on syntax trivia.
Start With a Production PHP Application
Ask:
Walk me through the most complex PHP application you've worked on.
Then ask:
- Which framework did it use?
- What did you personally own?
- How was the code structured?
- Which database did it use?
- How were background jobs handled?
- How was it tested?
- How was it deployed?
- What was its biggest performance problem?
- What would you redesign today?
Production examples quickly reveal whether the candidate has worked beyond tutorials.
Test PHP Architecture
Ask:
How do you decide when business logic belongs in a controller, service, model, or another class?
Strong candidates should care about clear responsibilities rather than blindly following one pattern.
Test OOP
Ask the candidate to explain a real situation where they used:
- Interfaces
- Dependency injection
- Composition
Look for practical reasoning.
Test Laravel Where Relevant
Ask:
How would you structure a Laravel feature that creates an order, charges a customer, and sends several notifications?
Explore:
- Validation
- Transactions
- Services
- Events
- Queues
- Tests
Test Database Performance
Ask:
A Laravel page makes 500 database queries. How would you investigate it?
A strong candidate may discuss:
- N+1 queries
- Eager loading
- Query logging
- Indexes
- Profiling
- Caching
Test APIs
Ask:
Design an API endpoint for creating subscription payments.
Explore:
- Validation
- Authentication
- Error responses
- Transactions
- Idempotency
Test Queues
Ask:
A user uploads a file that takes three minutes to process. How would you design the workflow?
Look for background processing, status tracking, retries, and failure handling.
Test Security
Ask:
What security issues would you review before releasing a public PHP form or API endpoint?
Candidates may discuss:
- Validation
- SQL injection
- CSRF
- XSS
- Authentication
- Authorization
- Rate limiting
Test Legacy Modernization
Ask:
You inherit a PHP application with no automated tests and several years of business logic. How would you modernize it?
Strong candidates should avoid proposing an immediate rewrite without understanding the business risk.
Test Framework Judgment
Ask:
When would you choose Laravel, Symfony, or a lighter PHP framework?
Good answers should reflect requirements, team expertise, application complexity, and framework tradeoffs.
PHP Developer Interview Questions
Useful questions include:
- Walk me through a PHP application you've shipped to production.
- How do PHP type declarations improve application reliability?
- When would you use an interface instead of an abstract class?
- What are PHP traits useful for?
- How does Composer autoloading work?
- How do you structure business logic in a Laravel application?
- How do you identify and fix N+1 queries?
- How would you design an idempotent webhook handler?
- What's your approach to testing a PHP API?
- How do you secure authentication and authorization?
- When should work move into a queue?
- How would you improve a slow Laravel application?
- How would you modernize a legacy PHP codebase?
- How do you approach a major PHP version upgrade?
- Tell me about a PHP production incident and what you changed afterward.
Choose questions that match your application.
A Laravel SaaS Developer shouldn't have the same interview as a WordPress plugin developer.
PHP Developer vs. Laravel Developer: Which Should You Hire?
A PHP Developer can work across several PHP frameworks and environments.
A Laravel Developer specializes more deeply in Laravel.
Laravel expertise may include:
- Eloquent
- Blade
- Queues
- Events
- Middleware
- Validation
- Artisan
- Horizon
- Laravel-specific architecture
Hire a general PHP Developer when the person needs to work across custom PHP, multiple frameworks, or a varied legacy environment.
Hire a Laravel Developer when Laravel itself defines the application architecture.
PHP Developer vs. WordPress Developer
A PHP Developer focuses more broadly on server-side PHP software.
A WordPress Developer specializes in the WordPress ecosystem.
Their expertise may include:
- Themes
- Plugins
- Hooks
- Custom post types
- Gutenberg
- WooCommerce
- WordPress APIs
If your project is primarily WordPress, hire for direct WordPress experience.
If you're building a custom web application or API, a broader PHP profile is usually more appropriate.
PHP Developer vs. Back-End Developer
A Back-End Developer describes a broader category.
They may work with:
- PHP
- Python
- Node.js
- Java
- Go
- .NET
A PHP Developer specializes specifically in PHP and its surrounding ecosystem.
Hire the broader role if language flexibility matters.
Hire the PHP specialist if your existing application is already centered on PHP.
PHP Developer vs. Full-Stack Developer
A PHP Developer primarily focuses on server-side development.
A Full-Stack Developer works across both the backend and user interface.
They might combine:
Laravel + Vue
or:
PHP + React
Hire a PHP specialist when backend complexity justifies dedicated ownership.
Hire a full-stack profile when one person genuinely needs to contribute across both layers.
How to Hire a PHP Developer Through South
South helps U.S. companies find PHP Developers in Latin America based on the framework, application, database, industry, and technical challenges involved.
1. Define the PHP Developer You Need
Start with your application.
Consider:
- Laravel, Symfony, WordPress, or custom PHP
- Current PHP environment
- MySQL or PostgreSQL
- APIs
- Redis
- Queues
- E-commerce
- Legacy modernization
- Docker
- Cloud platform
- Seniority
A PHP Developer maintaining an established WordPress ecosystem needs a different background from someone building a new Laravel SaaS backend.
2. South Sources and Vets Candidates
South identifies PHP Developers across Latin America whose backgrounds align with your requirements.
Evaluation can include:
- Modern PHP fundamentals
- Relevant frameworks
- Database knowledge
- APIs
- Testing
- Security
- Debugging
- Communication
- English proficiency
- Production experience
3. Review Pre-Vetted PHP Developers
You receive a focused selection of candidates rather than sorting through a large volume of generic applications.
Compare their:
- PHP experience
- Frameworks
- Databases
- Products
- Legacy or modernization experience
- Seniority
- Compensation
4. Interview Your Preferred Candidates
Your engineering team interviews the developers you want to meet.
Use realistic PHP scenarios, database questions, framework discussions, debugging problems, and examples from your existing application to evaluate how each candidate thinks.
5. Hire the PHP Developer Who Fits Your Team
You make the final hiring decision and manage your PHP Developer as part of your team.
South provides one consolidated monthly invoice covering your teammate's compensation and South's service.
There are no minimum commitments, and South offers a free replacement if you need to make a change.
Why Hire PHP Developers From Latin America?
PHP development involves regular collaboration with:
- Front-End Developers
- Product Managers
- QA Engineers
- DevOps Engineers
- Designers
- Other backend developers
Latin America's overlap with U.S. working hours supports:
- Code reviews
- Architecture discussions
- Database troubleshooting
- Sprint meetings
- Pair programming
- Release coordination
- Same-day debugging
Companies can access PHP Developers throughout Latin America with experience across Laravel, Symfony, WordPress, MySQL, PostgreSQL, Redis, Docker, APIs, SaaS, e-commerce, and other web environments.
Frequently Asked Questions (FAQs)
What does a PHP Developer do?
A PHP Developer builds and maintains server-side web applications.
Their responsibilities may include application logic, APIs, databases, authentication, integrations, queues, testing, performance, security, and production troubleshooting.
How much does a PHP Developer cost?
Compensation depends on experience, framework specialization, and application complexity.
South's current role listings show an all-in monthly rate of approximately $4,650 for PHP Developer talent in Latin America, with potential savings of around 47% compared with its U.S. benchmark.
What qualifications should a PHP Developer have?
Look for modern PHP fundamentals, object-oriented programming, Composer, relevant frameworks, database skills, APIs, testing, security, debugging, and production experience.
Should a PHP Developer know Laravel?
Only if your application uses Laravel.
Symfony, WordPress, CodeIgniter, or custom PHP expertise may be more relevant in other environments.
Does a PHP Developer need SQL?
Usually, yes.
Most PHP web applications interact heavily with relational databases, so practical SQL knowledge is valuable even when the developer primarily works through an ORM.
Is PHP good for APIs?
Yes.
Laravel, Symfony, Slim, and other PHP technologies can be used to build REST APIs and backend services.
What's the difference between a PHP Developer and Laravel Developer?
PHP Developer is the broader role.
A Laravel Developer specializes in the Laravel framework and its ecosystem.
When should I hire a PHP Developer?
Consider hiring one when PHP is central to your product, your Laravel or Symfony backlog is growing, an existing PHP system needs modernization, you're upgrading an older application, or backend performance and maintenance require stronger dedicated ownership.
Can I hire PHP Developers in Latin America?
Yes. Latin America has PHP Developers with experience across Laravel, Symfony, WordPress, MySQL, PostgreSQL, APIs, Redis, Docker, and cloud environments, with working hours that can align closely with U.S. engineering teams.
Hire a PHP Developer With South
The right PHP Developer helps your team keep valuable web applications moving forward instead of letting years of accumulated code turn every new feature into a risky project.
South helps U.S. companies find pre-vetted PHP Developers across Latin America based on PHP depth, framework experience, database skills, application background, seniority, and communication.
Schedule a free call and find your next PHP Developer in Latin America with South.