Performance Engineer, Radar Engineering

Apple Inc.; Cork; On-site; EUR 70,000 - 90,000; Full time

Job summary

Apple Inc. in Cork, Ireland is seeking an early-career Performance Engineer for the Radar Engineering team. You will design and run load tests for Radar’s services, analyze results, and identify bottlenecks to keep the platform fast at scale.

You will collaborate with engineers across hardware and software teams and contribute to performance testing strategy. You’ll work in a distributed team across California, Texas, and Ireland, receiving mentorship and training in Apple’s development

Qualifications

• Solid programming or scripting skills in Java, Python, or similar language.
• Understanding of how web services, databases, and networks affect application performance.
• Experience with version control (Git) and a working understanding of the software develop-

Responsibilities

• Design, build, and run load, stress, and performance tests for Radar’s services.
• Analyze results, profile services, and identify bottlenecks.
• Report findings clearly and work with engineers to verify fixes.
• Track performance trends across releases and flag regressions.
• Contribute to capacity planning and performance test strategy.
• Follow and help improve the team’s engineering best practices.

Skills

Java

Python

Web performance

Git

Education

Bachelor’s degree in CS/Software Eng or related field

Tools

JMeter

Gatling

k6

Profiling tools

SQL

Job description

Selection changes the language of the page/content

Performance Engineer, Radar Engineering

Cork, County Cork, Ireland Corporate Functions

Do you want to have a significant impact on how work is done at Apple? Radar is used byevery major organization across Apple to help teams organize and track their work. As Apple’s primary tool for defining, tracking, and testing issues, Radar has been used for decades across various teams, including hardware and software engineering. It serves as a unified platform for bug tracking, test case management, and product management, facilitating seamless coordination among team members. The Radar Engineering team at Apple seeks an early-career Performance Engineer to help keep Radar fast at Apple scale.

Description

As a Performance Engineer for Radar, you will help make Apple’s platform for product devel-opment, bug tracking, and work management fast and able to scale. Radar is a high-traffic,business-critical system used by teams across all of Apple, and every second of latency is multiplied across engineers company-wide.You will join a growing team distributed across California, Texas, and Ireland. In our highlycollaborative environment, you will work closely with a team of passionate builders to deliverend-to-end features critical to Apple’s engineering workflows. You will receive structuredmentorship, comprehensive training in Apple’s development practices, and the support tolearn and develop your skills quickly.You will design and run load and performance tests across a complex microservices ecosys-tem. You will measure, profile, and find bottlenecks, and learn how a platform at this scale re-mains fast while it constantly evolves. As you ramp up, you will take on increasing ownershipof performance testing, help shape capacity planning, and help bring new performance toolsand technologies onto the platform.

Responsibilities

• Design, build, and run load, stress, and performance tests for Radar’s services.
• Analyze results, profile services, and identify bottlenecks.
• Report findings clearly and work with engineers to verify fixes.
• Track performance trends across releases and flag regressions.
• Contribute to capacity planning and performance test strategy.
• Follow and help improve the team’s engineering best practices.

Minimum Qualifications

• Solid programming or scripting skills in Java, Python, or similar language.
• Understanding of how web services, databases, and networks affect application performance.
• Experience with version control (Git) and a working understanding of the software develop-

Preferred Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
• Exposure to load testing tools such as JMeter, Gatling, or k6.
• Exposure to profiling and monitoring tools.
• Familiarity with relational databases and SQL.
• Interest or experience in agentic workflows, MCP integrations, or AI-assisted development tools.
• Ability to triage problems, prioritize accordingly, and propose a resolution.
• Excellent verbal and written communication skills.

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