{"id":1535085,"url":"https://alion.io/job/evolution-senior-backend-developer","title":"Senior Backend Developer","company":{"id":13826,"name":"Evolution","domain":"evolution.com","url":"https://alion.io/company/evolution","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":{"grade":"B","score":75,"open_postings":33,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":27,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sofia, Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":28000,"max_usd":77000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":4821},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache HTTP Server","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Docker","optional":false},{"name":"JavaScript","optional":false},{"name":"MariaDB","optional":false},{"name":"Memcached","optional":false},{"name":"MySQL","optional":false},{"name":"Nginx","optional":false},{"name":"Node JS","optional":false},{"name":"PHP","optional":false},{"name":"PHPUnit","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Redis","optional":false},{"name":"Git","optional":true},{"name":"GitLab","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-09-30T10:55:40Z","employer_posted_date":"2026-09-30","last_verified_at":"2026-09-30T18:21:09Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"We’re Red Tiger, a dynamic and self-contained team within the vast Evolution ecosystem, thriving with 200 talented professionals based in Sofia. Our expertise spans from product inception to final development, covering product, art, development, and more. Proudly 100% made in Bulgaria, we take immense pride in our achievements, adaptability, and the high quality of our games.\n As a Senior Backend Developer in our Backend team, you will be a core technical contributor responsible for driving the architecture, scalability, and domain modeling of our high-concurrency Online Gaming & Betting Platform. Working alongside our Backend Architect and Engineering Lead, you will shape the future of our high-throughput platform, which processes real-time betting operations and high-volume financial transactions globally.\nIn this role, you will apply Domain-Driven Design (DDD) principles to model complex business domains into clean, maintainable, and decoupled microservices. You will lead technical design sessions, mentor junior and mid-level engineers, conduct rigorous code reviews, and drive performance optimizations across our RESTful API services, databases, and Docker-based environments.\nMission & Responsibilities\nArchitect, design, and write high-performance, fault-tolerant PHP code utilizing Domain-Driven Design (DDD) and SOLID principles.\nLead domain modeling discussions, define Bounded Contexts, and establish a Ubiquitous Language between technical and business domains.\nMaintain rigorous code review standards to enforce code quality, architectural consistency, and system security.\nDrive continuous performance tuning, database optimization, and refactoring of legacy components.\nMentor and guide junior and mid-level developers, fostering continuous technical growth within the team.\nPartner with QA, DevOps, and Product leadership to ensure rapid, reliable deployment of critical backend services.\n Extensive hands-on experience in advanced PHP software development (PHP 7.4+, PHP 8.x).\nPractical experience applying Domain-Driven Design (DDD) concepts (e.g., Aggregates, Entities, Value Objects, Domain Events, Repositories, Bounded Contexts).\nStrong expertise in core PHP and custom architecture patterns without over-reliance on framework abstractions.\nAdvanced experience with MySQL / MariaDB optimization, query tuning, indexing strategies, and handling heavy transaction loads.\nDeep knowledge of Docker, container orchestration, and modern containerized deployment strategies.\nProven track record of designing, building, and maintaining high-throughput, low-latency RESTful APIs.\nSolid experience with JavaScript / Node.js for microservices or real-time event processing.\nMastery of OOP principles, SOLID guidelines, design patterns, and clean code principles.\nExperience with automated testing, TDD/BDD practices (Codeception, PHPUnit).\nAdvantages:\nExperience with event-driven architectures and message brokers (RabbitMQ, Kafka).\nExpertise in caching layers (Redis, Memcached) and high-load database architecture (replication, sharding).\nFamiliarity with web server administration and optimization (Nginx, Apache).\nExperience in the Online Gaming, FinTech, or high-frequency transactional domain.\n Tech Stack & Tools:\n Primary Programming Languages: PHP (7.4+), JavaScript / Node.js (21+)\n Database Management: MySQL / MariaDB (10.4+)\nContainerization & Infrastructure: Docker\nArchitecture & Protocols: REST APIs, JSON\nVersion Control & Collaboration: Git / GitLab\nWhat we offer:\nEnvironment tailored to allow you to realize your full potential\nChallenging work in a dynamic international team\nCompany funded training.\nFlexibility on working hours\nMultisport/Coolfit card;\nAdditional health insurance.","description_format":"text","description_chars":3732,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Gaming","iGaming & Gambling"],"lifecycle":[{"event":"open","at":"2026-09-30T18:21:09Z"}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":0,"expected_fill_days":27,"reasons":["conf:11","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/evolution-senior-backend-developer","json_url":"https://alion.io/job/evolution-senior-backend-developer.json","meta":{"generated_at":"2026-10-01T21:41:21Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":4304,"day_limit":5000,"remaining_today":696,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}