Software Engineer - Performance Engineering

Company Description
H&M Group is on a journey to meet and exceed our customers' expectations today and tomorrow. Through collaboration, innovation, and technology we challenge ourselves and the industry. To cater to the individual needs and desires of our millions of customers, our tech organisation delivers solutions for the entire value chain for all our brands.
We are accelerating digitalization and to stay relevant, we need to ensure we have strong leaders in place to bring our best capabilities, innovation ideas and talented technologists to support the transformation of H&M Group.


Job Description
We are now looking for Software Engineers to join our Performance Engineering team who will be responsible for analyzing, testing, and optimizing the performance of our software applications, ensuring they meet high standards of reliability and efficiency.
As a part of the Developer Experience unit, you will play a crucial part in providing actionable insights that help the Product Teams to enhance the performance and reliability of our product and services. In this role, you will collaborate closely with the product teams to understand their performance requirements and design comprehensive test plans accordingly.

Some of your responsibilities will include:
Balance performance optimization with other development considerations such as functionality, security, and time-to-market.


Utilize various tools and techniques, such as load testing, stress testing, and capacity planning, to ensure that our applications perform flawlessly even in the most demanding scenarios.


Enhance the end-user experience, ensuring our applications perform at their best even under high loads.


Work with cutting-edge technologies and complex systems, pushing the boundaries of performance optimization.


Support the adoption of performance CI/CD guardrails, ensuring that performance considerations are integrated into the continuous integration and delivery pipelines.


Prioritize performance improvements effectively, make data-driven decisions, and communicate the value of performance engineering and the performance CI/CD guardrails to stakeholders.


Collaborate with talented engineers and cross-functional teams, contributing to the delivery of high-quality software products.



Qualifications
Strong proficiency in performance testing tools such as LoadRunner and JMeter
Experience in designing and executing performance tests for various scenarios (load, stress, endurance, etc.)


Solid understanding of performance analysis techniques and tools for identifying performance bottlenecks


Knowledge of performance testing in microservices architectures and containerized environments


Proficiency in performance monitoring and profiling tools like Dynatrace, AppInsights, Splunk, Grafana


Knowledge of web protocols, network protocols, and their impact on application performance


Familiarity with scripting languages (Python, TypeScript, Bash etc.) for test automation and performance analysis


Experience in building and maintaining performance testing infrastructure in Azure cloud.


Strong analytical and problem-solving skills to diagnose performance issues and propose effective solutions


Excellent communication and collaboration abilities to work closely with cross-functional teams and stakeholders

Also good if you have,
Experience with cloud-based performance testing and monitoring tools (e.g., Azure Monitor)


Strong proficiency in performance testing tools such as K6, Azure LoadTest


Experience in designing and executing chaos tests


Familiarity with performance optimization techniques, including code profiling, caching, and database query optimization



Additional Information
This is a full-time position based in Stockholm. If your experience, skills, and ambitions are right for this role, please apply with CV in English.
Please do not send applications to individual email address, due to GDPR, we only accept applications through our career page. We look forward to receiving your application!
What we offer
You are joining a unique value-driven culture, a large tech network and community where you can be yourself. Besides the obvious perks such as staff discount card, learning communities, wellness and parental benefits, there are a lot of opportunities to experiment and grow in the direction you want. Being a major player gives us countless opportunities to make a real impact and shape the future.
H&M Group is committed to creating a diverse & inclusive environment and we are actively looking for qualified candidates irrespective of race, gender, gender identity, sexual orientation, ethnicity, religion, national origin, disability or age.
Learn more about our I&D work https://youtu.be/veRbl9Cijts