💰 Salary: 13,000–25,000 PLN (CoE) / 15,000-28,000 PLN (B2B)🕦 Full-time☑️ B2B or CoE🏢 Hybrid: 3 days office / 2 days home in WarsawWe’re seeking a Senior Full-Stack PHP Developer to join a well-established international IT company that builds long-term partnerships with businesses, rather than outsourcing. The team works on high-impact platforms in industries such as aviation, banking, B2B marketplaces, and job search solutions.Requirements● 3+ years of experience with PHP (Symfony, PSR standards)● 3+ years of experience with TypeScript/JavaScript and React (Redux)● Strong understanding of the full application lifecycle● Experience with PostgreSQL and backend integrations● Hands-on experience with Docker and modern development workflows● Confident working in Linux environments (1+ year)● Active use of Composer and dependency management● Experience with CI/CD, cross-code reviews, and TDD● English proficiency for daily communication with colleagues and PMsNice to Have● Experience modernizing or upgrading legacy PHP applications● Familiarity with RabbitMQ, Memcached, Manticore/Sphinx Search● Experience with SSR, WebPack/Vite, Leaflet● Frontend testing experience (Jest, React Testing Library, Playwright)● Knowledge of Kubernetes, Vagrant, SaltStack● Experience with AI-related solutions or integrationsKey Responsibilities● Develop and maintain scalable full-stack applications using PHP and React● Build and integrate backend services, APIs, and messaging systems● Contribute to architectural decisions and participate in code reviews● Collaborate closely with product managers and cross-functional teams● Ensure performance, reliability, and long-term maintainability of applications● Support CI/CD pipelines and testing practices● Share knowledge and best practices within the engineering teamWhat We Offer● Company-provided work equipment● Fully paid sick leave● Complimentary lunches● Annual salary review● 75% reimbursement for professional education● Free weekly English classesGet to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100%remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/