Senior Software Engineer (PHP)

TL;DR

Senior Software Engineer (PHP): Designing and implementing complex features for a fast-growing startup in the vacation rental industry with an accent on subscriptions, invoicing flows, and core platform capabilities. Focus on long-term system reliability, scalability, and maintainability across critical business systems, while applying SOLID principles and Domain-Driven Design.

Location: Krakow/Remote within Poland

Salary: 103 - 164 PLN/h + VAT (B2B), 14 270 - 22 200 PLN gross (Permanent)

Company

hirify.global builds the tech that moves industries forward, focusing on AI, energy, logistics, sports, and other complex and exciting segments.

What you will do

• 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).
• Fluent English with effective communication skills in a distributed team.

Nice to have

• Experience working on business-critical systems (e.g., payments, subscriptions, integrations).
• Experience integrating with third-party APIs at scale (authentication, webhooks, retries, rate limits, observability).
• Understanding Domain-Driven Design concepts and layered architecture principles.
• Familiarity with AWS or similar cloud vendors.

Culture & Benefits

• A working culture that is high performing, ambitious, collaborative and fun.
• Health insurance and a yearly training budget.
• Flexible working hours.
• Unlimited WFH (work from home) policy.
• For those who dream of traveling: WFA (work from anywhere) possibilities in hirify.global - approved countries.