Design and implement complex features including subscriptions, invoicing flows, and core platform capabilities
Build and maintain internal and external APIs used by the web application and integration partners
Ensure long-term system reliability, scalability, and maintainability across critical business systems
Apply SOLID principles and Domain-Driven Design to guide technical decisions and architecture
Facilitate technical discussions, planning, and estimation within the cross-functional team
Continuously improve observability and overall quality

Requirements

Min 5+ years of solid professional experience in backend engineering
Strong hands-on experience with modern PHP (8.2+)
Expert-level knowledge of at least one modern PHP framework (e.g. Symfony)
Expert-level knowledge of relational databases, preferably MySQL
Experience designing and building complex business systems (subscriptions, APIs, integrations)
Proven ability to refactor complex systems while keeping production stable
Experience with modular or layered architectures and SOLID design principles
Regular use of AI-powered development tools as a daily productivity booster
Autonomous, hands-on work style with strong debugging and problem-solving skills
Fluent English with effective communication skills in a distributed team
Experience working on business-critical systems (e.g., payments, subscriptions, integrations) as an advantage
Experience integrating with third-party APIs at scale (authentication, webhooks, retries, rate limits, observability) as an advantage
Understanding Domain-Driven Design concepts and layered architecture principles as an advantage
Familiarity with AWS or similar cloud vendors as an advantage

Benefits

Health insurance and a yearly training budget (local and international conferences, language courses), employee-led workshops
Flexible working hours
Unlimited WFH (work from home) policy
Bonus for referrals
For those who dream of traveling: WFA (work from anywhere) possibilities in NFQ - approved countries
B2B contracts include paid annual service break and paid public holidays in Poland
Office perks and team activities

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

PHPSymfonyMySQLAPIsSOLID principlesDomain-Driven Designmodular architecturelayered architecturedebuggingproblem-solving

Soft Skills

effective communicationautonomous work styletechnical discussion facilitationplanningestimation