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Sr. Software Engineer - E-Commerce (Poland)

Meet Yubico: the inventor of the YubiKey––the world's first and leading security key. Our company’s mission is to make secure login easy and available for everyone. Yubico was founded in 2007 by Stina and Jakob Ehrensvard, and recently went public on Nasdaq Stockholm Main Market: YUBICO. Our customers include Fortune 500 companies, hundreds of government agencies and millions of individuals in over 160 countries that rely on Yubico technology to secure access to computers, online services and mobile apps. We  are a global company with a strong company culture and employees located in over 14 countries. Yubico’s  headquarters are based in  Stockholm, Sweden and Santa Clara, CA.  Aligned with our mission to make the internet more secure for everyone, Yubico donates YubiKeys to organizations helping at-risk individuals through our philanthropic initiative, Secure it Forward.



At Yubico, we offer:


Freedom and Flexibility: At Yubico, we want you to be your most productive selves whether you decide to work 100% from home or choose to work hybrid/onsite. The way we balance the fast-paced demands of a high-growth company and sustainability is making rest a priority.


Yubico Values: We work to ensure that our employees have an open space to have their voices amplified to create a workplace where everyone feels like they belong. Aligned with this, our employees have created some pretty cool Employee Resource Groups: YubiPride, YubiBIPOC, YubiSustainability and YubiWomen. Additionally, Yubico donates YubiKeys to organizations in need all over the world (you can read more about our work here).


Social Connection: Relationships and connectedness matter, and we love spending time with our team! Our virtual workspace keeps us connected day-to-day whether it's through Yubico celebrating wins or our buzzing Slack communities. We host an all-team event in a new location every year where we plan for upcoming quarters, set goals, and most importantly, host fun events to encourage team building outside of the workplace. Check out our Life at Yubico Page on LinkedIn and our awards here.


The Role:


As a Sr. Software Engineer you will be the lead engineer for Yubico’s eCommerce platform backend. You will build and maintain e-commerce features, as well as integrations with supply chain, finance, customer support, and payment systems.


We are looking for you who have a burning passion for backend development. You love seeing how a system comes to life and understand the important synergy between databases, application code and APIs. You are curious and always want to expand your knowledge in the areas you are passionate about, as well as in security protocols and technologies. You are also not afraid of expressing your concerns or new ideas you want others to hear about. You like to share your work and findings with colleagues and enjoy discussing subjects in the areas you are passionate about.


Tasks & Responsibilities:
  • Suggest, design and implement new system features. 
  • Maintain the technical aspects of our ecommerce backend.
  • Design and implement integrations with the rest of Yubico’s back end systems.
  • Provide support on the platform for internal users.
  • Participate in a 24x7 on-call rotation (average <1 incident/month in the last 12 months).
  • Mentor junior developer colleagues.


Skills & Experience:
  • 7+ years of experience in PHP, including deep knowledge of object oriented principles, dependency injection and design patterns.
  • Experience leading projects including design and development of back-end features.
  • 5+ years of design and implementation experience with relational SQL databases
  • 3+ years of experience with modern frameworks, e.g. Laravel or Symfony.
  • Experience creating and consuming REST APIs.
  • Hands-on experience in one or more of the following technologies: Kubernetes, Docker, GCP.
  • Self-motivated and interested in the e-commerce area.


Bonus:
  • Experience with Magento.
  • Experience with cross-system integrations, such as Netsuite. 
  • Experience with ID brokering and OpenID standard (e.g. Keycloak)
  • Experience with e-commerce and supply chain operations.
  • Experience with CI/CD pipelines (e.g. Github Actions).
  • Linux experience.


#LI-Remote

#LI-AS1


We are an equal opportunity employer, we value diversity and uphold an inclusive environment where all people feel that they are equally respected and valued. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, religion, national origin, disability, protected Veteran status or any other characteristic protected by law. We'd love to learn about what you can add to our diverse team.


Yubico does not accept agency resumes or referrals so please do not send them to our careers staff or employees. Yubico is not responsible for any fees related to unsolicited resumes or referrals.


Personal data submitted through this form is used for managing Yubico’s recruitment activities, which include facilitating any application you make, setting up and conducting interviews and tests for applicants, evaluating and assessing results and selecting candidates, and as otherwise needed in our recruitment and onboarding processes. The use of your personal data may also be necessary prior to entering into a contract with you (that is prior to offering you a job with Yubico). Your personal data will only be used for the purposes for which it was collected and in accordance with the Yubico Privacy Notice. We only keep your personal data for as long as necessary and in compliance with Yubico’s record retention policies. If you have asked us to, we will keep you informed of other opportunities at Yubico. We do this in various ways, including email and by phone. If at any time you do not want us to contact you or use your information as described herein please contact us at jobs@yubico.com to let us know and we will delete all such information. Providing your personal data is voluntary, but necessary to join our talent community, and if you do not agree to provide your data, we will not be able to consider you as part of our talent community.


As part of providing the requested service, we will transfer your data to be processed by Lever, Inc., a service provider contracted by Yubico AB and/or its subsidiaries that meets legally mandated privacy requirements. The Yubico Privacy Notice offers more information about Yubico privacy practices, including the lawful basis for processing of personal data, how to lodge a complaint with the supervisory authority, and how to contact Yubico to exercise your data subject rights. In this notice, when we refer to "Yubico", "us", "we" or "our", we mean the Yubico group company or companies that you apply to, or correspond with, and which are responsible for any personal data collected about you.  


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What You Should Know About Sr. Software Engineer - E-Commerce (Poland), Yubico

Meet Yubico, the inventive force behind the YubiKey, changing how the world approaches secure login. As a Sr. Software Engineer for our E-Commerce team in Warsaw, Poland, you'll play a crucial role in enhancing our backend capabilities. This isn't just a job; it's about being part of a mission to make security easy for everyone. Here, you'll lead the charge in building and maintaining critical e-commerce features while integrating with supply chain, finance, customer support, and payment systems. If backend development is your passion, and you thrive seeing systems come to life, you’ll find your place among a team eager to share their knowledge. We're a company that values innovation and encourages everyone to voice their ideas. You'll have the freedom to choose how you work—whether from home or on-site—while embracing a workplace culture where connectedness and team spirit drive our success. Here’s your chance to share your expertise in PHP, SQL databases, and modern frameworks like Laravel. With a commitment to mentorship and professional development, you’ll find enrichment in guiding junior developers. Let's reshape the e-commerce landscape together at Yubico!

Frequently Asked Questions (FAQs) for Sr. Software Engineer - E-Commerce (Poland) Role at Yubico
What are the responsibilities of a Sr. Software Engineer at Yubico?

As a Sr. Software Engineer at Yubico, you will be responsible for leading the development of our e-commerce platform backend. This includes designing and implementing new features, maintaining the technical aspects of our backend, and integrating with various systems such as supply chain and payment gateways. You will also mentor junior developers, support internal users, and participate in an on-call rotation to ensure system reliability.

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What qualifications do I need to apply for the Sr. Software Engineer position at Yubico?

To qualify for the Sr. Software Engineer position at Yubico, candidates should have over seven years of experience with PHP, strong knowledge of object-oriented principles, relational SQL databases, and modern frameworks like Laravel or Symfony. Experience with creating REST APIs, cloud technologies like Kubernetes and Docker, and familiarity with e-commerce systems will also be advantageous.

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How does Yubico support employee development for a Sr. Software Engineer?

Yubico believes in empowering its employees, especially Sr. Software Engineers, through mentorship opportunities and ongoing professional development. You will have the chance to mentor junior developers and attend events that promote technical skills and collaboration. Additionally, Yubico fosters a culture of learning and curiosity, allowing you to stay updated on the latest in security protocols and technologies.

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What is the work environment like for a Sr. Software Engineer at Yubico?

The work environment for a Sr. Software Engineer at Yubico is flexible and inclusive. You can choose to work remotely or hybrid while being part of a supportive and collaborative team culture. Regular virtual team events and all-team gatherings keep the energy high and foster social connections among colleagues.

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What technologies will I work with as a Sr. Software Engineer at Yubico?

As a Sr. Software Engineer at Yubico, you will work with a variety of technologies, including PHP, SQL databases, and modern frameworks like Laravel or Symfony, while also diving into cloud integration using technologies such as Kubernetes and Docker. Your role will also involve handling APIs for integrations, enhancing the versatility of the e-commerce platform.

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Common Interview Questions for Sr. Software Engineer - E-Commerce (Poland)
Can you describe your experience with PHP as it relates to e-commerce?

In answering this question, detail specific projects where you utilized PHP to develop e-commerce functionalities, focusing on any particular frameworks or design patterns you've mastered that contributed to successful outcomes.

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How do you approach integrating different systems within an e-commerce architecture?

Explain your methodology for mapping out system interactions, addressing how you ensure smooth data flow and maintain security protocols during integration, as this is critical in an e-commerce context.

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What strategies do you implement to optimize backend performance?

Discuss the optimization techniques you employ, such as caching strategies or query optimization for SQL databases, highlighting your experience in reducing load times and enhancing the user experience.

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Have you led any projects? Could you share your experience?

Provide examples of projects where you took a leadership role, detailing your responsibilities in managing the development process, fostering communication among team members, and ensuring deadlines were met.

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What is your experience with REST APIs?

Describe your experience creating and consuming REST APIs, including specific technologies used and examples of how you overcame challenges in ensuring seamless communication between different systems.

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Can you explain your familiarity with CI/CD pipelines?

Discuss your expertise in implementing CI/CD practices in previous roles, focusing on the tools you've used, such as GitHub Actions, and the benefits it brought to facilitating smoother deployments.

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What is your approach to mentoring junior developers?

Share your philosophy on mentorship, including specific methods you use to encourage junior developers, such as code reviews, pair programming, or encouraging open discussions about challenges.

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How do you handle work under pressure during critical events?

Discuss real-life scenarios where you've had to work under tight deadlines or during critical incidents, explaining your methodical approach to problem-solving and maintaining quality deliverables.

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What role does security play in the software you develop?

Emphasize the importance of security in your development practices, particularly in an e-commerce environment, and provide examples of how you've integrated security best practices into your work.

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Why do you want to work at Yubico as a Sr. Software Engineer?

Articulate your genuine interest in Yubico's mission, culture, and the impact of secure authentication technology on global security, explaining how you align with their values and goals.

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Yubico's core mission is to make the internet more secure for everyone. We named our first product the YubiKey, with the vision of enabling your ubiquitous key to securely access any number of IT systems. In Japanese, the word “yubi” means “finge...

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DATE POSTED
March 20, 2025

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