Senior Software Engineer (PHP)

TLDR

Design and implement complex features including subscriptions and invoicing flows while ensuring system reliability and scalability for critical business systems.

We build the tech that moves industries forward. We have our eyes set on AI, energy, logistics, sports and other complex and exciting segments. We believe in an innovative approach to solving deep issues and encourage our people to find their own solutions. We are constantly rethinking processes, business models, architecture, and tech stacks.  We foster a sense of curiosity, experimentation, and passion beyond code. With us, you can easily deepen your knowledge in any field you’re curious about. And because we work across many industries, you’ll be gaining the experience others can only dream of. Our client Smoobu is a fast-growing startup in the vacation rental industry. Smoobu’s all-in-one SaaS solution for private hosts currently manages over 70,000 properties across more than 120 countries. Smoobu’s priority is to help its hosts efficiently manage and grow their business. You will be part of a young, ambitious, and international team that is passionate about exceeding customer expectations through expert advice and action. As we continue to innovate and expand our offerings, we are looking for talented and driven individuals eager to take on the challenge of transforming the vacation rental industry and taking it to the next level. In this role, you will
  • 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
  • What you will bring
  • 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
  • We consider the following experience as an advantage
  • 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
  • What we offer
  • A working culture that is high performing, ambitious, collaborative and fun
  • 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
  • Salary range:
    103 - 164 PLN/h + VAT (B2B) 
    14 270 - 22 200 PLN gross (Permanent)
     
    If you have any questions, please contact me at j[email protected] or via Linkedin.
     
    Check all our career opportunities here.

    Benefits

    Flexible Work Hours

    Flexible working hours

    Health Insurance

    Health insurance and a yearly training budget (local and international conferences, language courses), employee-led workshops

    Paid annual service break and public holidays

    B2B contracts include paid annual service break and paid public holidays in Poland

    Remote-Friendly

    Unlimited WFH (work from home) policy

    NFQ builds innovative technology solutions across diverse sectors such as AI, energy, logistics, and sports. We serve as a core technology partner for companies like HomeToGo, developing complex systems that drive progress in industries rich with potential. Our focus is on rethinking traditional processes and empowering our team to push boundaries in technology and problem-solving.

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    Salary
    14 270 zł – 22 200 zł per month
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