{"id":3815501,"url":"https://alion.io/job/edsson-senior-software-developer","title":"Senior Software Developer","company":{"id":4486061,"name":"Edsson","domain":"edsson.com","url":"https://alion.io/company/edsson","size_band":null,"is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Ukraine"],"countries":["UA"],"hiring_countries":["UA"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Git","optional":false},{"name":"PHP","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"SOAP","optional":false},{"name":"WebSockets","optional":false}],"status":"live","first_seen_at":"2026-11-05T13:59:39Z","employer_posted_date":null,"last_verified_at":"2026-11-05T13:59:39Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"Responsibilities\n\nMaintain and extend existing functionality in a large legacy PHP 7.4 codebase.\n\nDesign and implement robust solutions for bug fixes, new features, and technical debt reduction.\n\nOptimize database queries and schema design using PostgreSQL.\n\nRefactor old modules and participate in gradual modernization plans.\n\nCollaborate with DevOps and QA to ensure system stability and deployment continuity.\n\nParticipate in technical discussions, code reviews, and architecture planning.\n\nWork closely with cross-functional teams including product managers and front-end developers.\n\nRequirements\n\n5+ years of experience with PHP, including work with legacy systems (ideally PHP 7.x).\n\nStrong proficiency with PostgreSQL or similar relational databases.\n\nDeep understanding of object-oriented programming, software design patterns, and MVC architecture.\n\nExperience with RESTful APIs and integration of third-party services.\n\nVersion control with Git.\n\nStrong debugging and performance profiling skills.\n\nAs A Plus\n\nKnowledge of Python for scripting or integration purposes.\n\nExperience working with SOAP web services and legacy protocols.\n\nFamiliarity with WebSockets and TCP socket-level communication.\n\nExposure to systems migration, re-architecture, or code modernization projects.\n\nWe Offer\n\nCompetitive salary\n\nFlexible schedule\n\nSocial package\n\nCourses, webinars, and seminars to increase professional skills\n\nPossibility to work remotely and onsite\n\nHorizontal hierarchy. 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