Senior PHP Developer – Symfony Migration & Modernization (Remote-US)
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 1d ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 5d ago
The date the source published, not the day we noticed it (2026-10-28). Last seen at its source 2h ago.
We have tracked this listing since 28 Oct 2026 (4 days). The employer's own board has carried it every time we have read it, most recently 2 hours ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
United States
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay $168.8k–231.5k/yr
Middle 50% of 2773 listings that do state pay — Engineering · Senior · United States · USD/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
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BambooHR employer's own board first seen 4d ago · last seen 2h ago
The listing
Senior PHP Developer – Symfony Migration & Modernization (Remote-US)
We are looking to hire a candidate with the mentioned skill sets and experience for one of our clients within the pharmaceutical Industry. This is a contracting and REMOTE role
About the Role
We are seeking an experienced Full Stack Software Developer (PHP/Symfony) to support the modernization of a business-critical laboratory reporting application from legacy Symfony 2.x to the latest supported version of Symfony.
The ideal candidate will have strong hands-on experience with PHP application development, legacy application modernization, PHP version upgrades, Symfony framework migrations, Composer dependency management, relational database integration, and Linux-based deployment environments.
This role involves working closely with internal development and business teams to document existing functionality, modernize application code, develop and execute regression tests, troubleshoot migration issues, and validate integrations with databases and supporting systems.
Key Responsibilities
PHP Application Development & Modernization
- Develop, maintain, and modernize enterprise PHP applications.
- Upgrade legacy PHP applications from PHP 5.x to modern PHP 8.x versions.
- Identify and resolve deprecated functions, incompatible language features, and outdated dependencies.
- Refactor legacy code while preserving existing business functionality.
- Apply object-oriented programming, exception handling, and application design principles.
Symfony Framework Migration
- Lead or support migration of legacy Symfony applications, particularly Symfony 2.x or 3.x to modern Symfony versions.
- Work with Symfony controllers, services, dependency injection, routing, configuration, event listeners, and service containers.
- Replace deprecated or removed Symfony components and bundles.
- Assess migration complexity, identify breaking changes, and develop practical migration strategies.
- Manage Composer dependencies and resolve PHP package compatibility issues.
Database Integration
- Integrate PHP/Symfony applications with relational databases, including Oracle.
- Develop, troubleshoot, and optimize SQL queries and application-level data access.
- Work with Doctrine ORM and DBAL, including legacy implementations.
- Maintain database functionality and ensure data integrity throughout application modernization.
- Troubleshoot database connectivity, driver compatibility, transactions, and query performance.
Legacy Application Troubleshooting
- Analyze existing applications with limited or outdated documentation.
- Trace application workflows across controllers, services, databases, and external dependencies.
- Identify undocumented business rules, hidden dependencies, and compatibility risks.
- Troubleshoot authentication, authorization, sessions, routing, file permissions, logging, and error handling.
- Maintain production application stability while implementing necessary changes.
Functional & Regression Testing
- Develop and execute functional and regression tests during application migrations.
- Establish baseline application behavior before implementing changes.
- Validate that modernized functionality produces results equivalent to the legacy application.
- Investigate, document, and resolve migration-related defects.
- Perform automated testing using PHPUnit and manual testing where automated coverage is limited.
- Validate database results, laboratory reporting workflows, and system integrations.
Application Deployment & Environment Management
- Deploy and support PHP applications in Linux-based environments.
- Work with Apache or Nginx web servers.
- Troubleshoot PHP runtime configurations, extensions, file permissions, environment variables, and application logs.
- Utilize Docker or other container technologies.
- Support Composer-based build and deployment processes.
- Manage environment-specific configurations and deployment activities.
Required Qualifications & Technical Skills
- Bachelor's degree in Computer Science, Software Engineering, Bioinformatics, or a related field, or equivalent practical experience.
- Strong professional experience in PHP application development and enterprise application modernization.
- Hands-on experience migrating Symfony 2.x to modern Symfony versions.
- Experience upgrading PHP 5.x to PHP 8.x.
- Strong knowledge of Symfony architecture and Composer dependency management.
- Experience with Doctrine ORM and DBAL.
- Strong SQL skills and Oracle database integration experience.
- Experience with legacy JavaScript, jQuery, HTML, CSS, and Bootstrap.
- Hands-on experience with Linux environments and Docker.
- Experience developing and executing automated regression tests, including PHPUnit.
- Ability to troubleshoot legacy applications and resolve migration-related compatibility issues.
- Experience working with healthcare or laboratory applications.
Work Requirements
- Location: 100% Remote – United States.
- Employment Type: Contract.
- Collaboration: Must be available to work with geographically distributed teams across US time zones.
Why Should You Apply?
Join an exciting opportunity to modernize a business-critical laboratory reporting application in the healthcare industry. Work remotely with experienced technical teams, apply your PHP/Symfony expertise to complex application migrations, and contribute to technology improvements that support essential laboratory operations.