Senior Software Developer
First seen by Alion on Nov 5, 2026.
Responsibilities
Maintain and extend existing functionality in a large legacy PHP 7.4 codebase.
Design and implement robust solutions for bug fixes, new features, and technical debt reduction.
Optimize database queries and schema design using PostgreSQL.
Refactor old modules and participate in gradual modernization plans.
Collaborate with DevOps and QA to ensure system stability and deployment continuity.
Participate in technical discussions, code reviews, and architecture planning.
Work closely with cross-functional teams including product managers and front-end developers.
Requirements
5+ years of experience with PHP, including work with legacy systems (ideally PHP 7.x).
Strong proficiency with PostgreSQL or similar relational databases.
Deep understanding of object-oriented programming, software design patterns, and MVC architecture.
Experience with RESTful APIs and integration of third-party services.
Version control with Git.
Strong debugging and performance profiling skills.
As A Plus
Knowledge of Python for scripting or integration purposes.
Experience working with SOAP web services and legacy protocols.
Familiarity with WebSockets and TCP socket-level communication.
Exposure to systems migration, re-architecture, or code modernization projects.
We Offer
Competitive salary
Flexible schedule
Social package
Courses, webinars, and seminars to increase professional skills
Possibility to work remotely and onsite
Horizontal hierarchy. No micromanagement pressure
Open company culture where your ideas and initiatives are valued
Regular team building & corporate events
International projects