This role sits at the core of a fast‐scaling fintech environment where you will help design, build, and evolve high‐performance backend systems powering modern payment solutions. You will work on complex, distributed architectures that support white‐label and Saa S platforms used across the financial ecosystem. The position combines hands‐on development with architectural ownership, requiring a strong focus on scalability, security, and reliability. You will collaborate closely with cross‐functional teams to integrate third‐party services and continuously improve platform capabilities. The environment is highly technical, product‐driven, and innovation‐oriented, with strong emphasis on clean architecture and engineering excellence. This is a high‐impact role for an experienced backend engineer eager to shape mission‐critical financial infrastructure.AccountabilitiesDesign, develop, test, document, deploy, and maintain scalable backend systems from scratchEnhance and optimize existing API and backend architecture to improve performance and reliabilityIntegrate third‐party payment and fintech services, including gateways, acquirers, and verification systemsDebug, troubleshoot, and resolve complex technical issues across production and development environmentsEnsure high‐quality software delivery by building and maintaining automated test environments and frameworksWrite clean, maintainable, and well‐documented code aligned with best engineering practicesCollaborate with front‐end engineers and cross‐functional teams to deliver end‐to‐end solutionsContribute to system stability and production support, ensuring smooth operation of live servicesParticipate in architectural discussions and help define scalable backend and integration strategiesRequirementsStrong experience in PHP backend development, with deep expertise in Symfony frameworkSolid understanding of OOP principles, SOLID/GRASP, and software design patternsExperience designing and building RESTful APIs and working with Doctrine ORMStrong knowledge of Postgre SQL, including query optimization, indexing, and schema designExperience with Docker and Kubernetes, including containerized application deploymentFamiliarity with distributed systems, microservices architecture, and scalable backend designExperience with testing frameworks such as PHPUnit, Codeception, or BehatUnderstanding of advanced architectural concepts such as CQRS, DDD, and Event Sourcing is highly valuedExperience with CI/CD pipelines and tools such as JenkinsStrong problem‐solving skills, curiosity, and ability to work on complex technical challengesNice to have: experience with large‐scale fintech, payment systems, or high‐load platformsBenefitsCompetitive compensation package aligned with experienceFully remote work with flexible hours within CET time zone19 days of flexible paid time offOpportunity to work on cutting‐edge fintech and payment infrastructureStrong engineering culture focused on quality, scalability, and innovationAccess to conferences and professional community eventsCollaborative, supportive, and values‐driven remote‐first environmentClear architectural ownership and opportunity to influence technical direction