Performance Engineer, Backend

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Performance Engineer, Backend in Denmark.

In this role, you will operate at massive scale, optimizing backend systems that serve tens of billions of page views every month across globally distributed infrastructures. You will dive deep into application performance, database efficiency, and caching strategies to identify and eliminate bottlenecks that directly impact user experience. Working cross-functionally with product, platform, and systems engineers, you will bring a performance-first mindset into architecture decisions, code reviews, and incident resolution. Your work will have immediate, measurable impact, improving speed, reliability, and scalability across a broad product ecosystem. This position offers a unique opportunity to solve complex performance challenges in real-world, high-traffic environments. You will thrive in an asynchronous, remote-first culture that values ownership, technical excellence, and continuous learning.

• Identify, analyze, and eliminate backend performance bottlenecks through deep profiling of PHP applications, database queries, and caching layers.
• Build and enhance performance observability by developing dashboards, instrumentation, and automated detection systems to surface regressions early.
• Partner closely with engineering teams to review code and system architecture with a strong performance focus.
• Establish and promote best practices for backend performance, contributing to internal guidelines and mentoring teams.
• Proactively seek out performance risks and inefficiencies, driving investigations and improvements end-to-end.
• Conduct in-depth performance troubleshooting for high-impact customer cases in collaboration with support and engineering teams.

• Strong hands-on experience profiling and optimizing PHP applications, with deep understanding of memory usage and execution flow.
• Proven expertise in caching strategies and technologies such as Memcached, including cache design, invalidation trade-offs, and optimization techniques.
• Demonstrated experience improving performance at scale in high-traffic, production-grade systems.
• Solid background in performance instrumentation, APM tools, observability platforms, and data-driven optimization.
• Excellent written communication skills, with the ability to clearly document findings, proposals, and technical recommendations.
• High level of autonomy, ownership, and prioritization skills, with a proactive approach to solving complex performance challenges.
• Bonus: Experience working with WordPress and WooCommerce in large-scale production environments.

• Competitive salary range between $70,000 and $170,000 USD, paid in local currency.
• Fully remote work environment with flexible schedules and open vacation policy.
• Comprehensive global benefits package, including healthcare and wellness programs.
• Opportunities for continuous learning, professional development, and career growth.
• Inclusive, diverse, and collaborative culture focused on autonomy and impact.

Why Apply Through Jobgether?

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

 Why Apply Through Jobgether? 

Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.

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