Senior Back-End Engineer

As a Senior Back-End Engineer at Pixelmatters, your primary responsibilities include designing, testing, and implementing back-end systems that ensure high performance and security. You'll be involved in every phase of back-end development, from creating robust APIs to maintaining databases and managing CI/CD pipelines, ultimately playing a crucial role in delivering exceptional digital products.

To be considered for the Senior Back-End Engineer position at Pixelmatters, candidates should have at least 5 years of experience in back-end development. Expertise in web frameworks like Ruby on Rails or Django, strong database knowledge, proficiency in designing RESTful and/or GraphQL APIs, and familiarity with version control systems and CI/CD tools are essential.

A Senior Back-End Engineer at Pixelmatters should be well-versed in server-side languages and frameworks, preferably Ruby on Rails, Django, or NestJS. Additionally, strong skills in databases such as PostgreSQL, MySQL, and MongoDB are crucial, alongside familiarity with tools for version control, testing, and CI/CD pipeline management.

Yes, at Pixelmatters, we prioritize flexibility and support a 'Remote as Default' policy. This means that while you can work remotely, you also have the option to join us at our office located in Porto if you prefer a more collaborative environment.

The salary for a Senior Back-End Engineer at Pixelmatters ranges from €43,626 to €61,126 annually. This includes additional benefits like meal, vacation, and Christmas allowances, making it a competitive offer in the industry.

When designing scalable back-end architectures, it's essential to start with a clear understanding of the application requirements and user load expectations. Utilize best practices such as microservices, horizontal scaling, and proper database indexing. Be prepared to discuss your past experiences with these strategies during the interview.

RESTful APIs operate over a fixed set of endpoints, while GraphQL APIs allow clients to specify the structure of the response. Highlight the flexibility GraphQL offers in fetching specific data, and elaborate on when to use each type based on project requirements during your answer.

Incorporating unit, integration, and end-to-end testing is vital for maintaining code quality. Discuss your experience with writing tests, utilizing testing frameworks, and how you ensure code coverage and reliability before deployment.

Managing databases effectively involves regularly optimizing schema designs, indexing key fields, and monitoring performance metrics. Explain how you’ve applied these techniques in previous projects to avoid bottlenecks and maintain data integrity.

Share your familiarity with CI/CD tools, outlining how you've implemented automated testing, integration, and deployment workflows in past roles. Emphasizing how this practice streamlines development processes can be particularly impactful.

Discuss your involvement in continuous learning; whether through online courses, tech meetups, or participating in open-source projects. Keeping your skillset current is crucial, and interviewers appreciate proactive learning approaches.

Talk about a project where you faced significant challenges, whether technical or team-related. Detail how you overcame these obstacles and what you learned from the experience to demonstrate your problem-solving abilities.

Discuss standard practices like regular security audits, using HTTPS, input validation, and employing security frameworks. Providing examples from past experiences where you implemented these measures will strengthen your answer.

Collaboration is key to successful software development. Discuss how you’ve worked in team settings to share knowledge, mentor junior developers, and handle peer reviews to illustrate your commitment to a supportive work culture.

Highlight qualities such as technical proficiency, problem-solving skills, and effective communication. Stressing the ability to mentor others and maintain high standards in engineering practices is also essential for a leading role.