Senior Software Test Engineer

About ITRS

At ITRS, we make society's critical technology work. Our mission is to deliver automated and holistic IT observability solutions that safeguard critical applications and enable innovation. We are the only monitoring and observability platform designed for the most demanding and regulated industries — trusted by 90% of Tier 1 capital markets firms.

We believe when our team thrives, so do our customers. With us, you'll find:

• A culture that backs you – We're proud to be a Great Place to Work for multiple years in a row due to our inclusive, supportive environment.

• Work that matters – Make a real difference with 1,000s of global customers in industries that keep the world running, including 9 out of 10 top investment banks.

• Room to grow – Whether you're starting your career or bringing years of experience, we're committed to your development. Just ask our team members who've been excelling here for 10+ years.

With headquarters in London and teams across the US, Europe, and Asia, ITRS combines the agility of a high-impact tech business with the stability of a private equity–backed global partner.

Scope of Role

We are looking for a Senior Software Test Engineer to join our software engineering team in Chicago. Reporting to our Engineering Manager, you will focus on platform-level testing for our backend software, ensuring the reliability, performance, and scalability of our products.

You will play an important part in maintaining and advancing our performance testing infrastructure, with an emphasis on automation. We offer flexibility, with a hybrid work schedule - at least 1-2 days per week in the office collaborating with the local team, and the rest remote. Occasional travel within the US and internationally to connect with our distributed global team. This role offers a salary range of $100,000 - $140,000 per annum.

As a Senior Software Test Engineer, you will:

• Conduct comprehensive platform-level testing, including functional, non-functional (e.g., performance, load, scalability), and integration testing for backend services.
• Maintain and evolve our existing performance testing lab, implementing enhancements to support evolving product needs.
• Develop and automate sizing measurement tools and frameworks to assess resource requirements (e.g., CPU, memory, storage) for customer deployments.
• Collaborate with software engineers to define test strategies, review requirements, and ensure quality throughout the product lifecycle—from design to deployment and support.
• Stay ahead of industry best practices in QA automation, performance testing, and backend technologies to drive continuous improvement.
• Support team activities, including knowledge sharing and mentoring on testing practices.

• 5+ years of professional QA and test engineering experience, desirably on backend or platform-level software.

• Proficiency with scripting languages (Bash, Python, or similar) for building test automation.
• Experience with containerized and cloud-native environments (Kubernetes in particular).
• Strong knowledge of Kafka, databases (SQL/NoSQL), and networking fundamentals.
• Experience with performance testing tools (e.g. JMeter, Locust, k6, Gatling) and automation frameworks.
• Familiarity with CI/CD, test integration into build pipelines, and DevOps practices
• Strong problem-solving, debugging and analytical skills.
• Excellent attention to detail, and ability to work collaboratively in a distributed and multi-cultural team environment.
• A genuine interest in backend platforms, distributed systems and performance engineering.
• Chicago-based, with availability for hybrid work (1-2 days in-office).
• Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent experience).

• Health Insurance, Vision Plan, and Dental Cover for you and your dependants
• HSA & FSA
• Employee Assistance Programme
• Health Advocate, Talk Space, One Medical, Teladoc
• 401(k)
• Commuter benefits
• Remote Hybrid Working
• Enhanced Parental Leave
• Life and AD&D Insurance
• 20 Days Holiday + Public Holidays + 3 days paid volunteering leave
• Referral Bonus
• Buy and Sell Holiday
• Training Reimbursement

ITRS is an Equal Opportunity employer and Inclusion is part of our everyday life. We celebrate diversity and pride ourselves on providing an environment where all employees can be their authentic selves and have a voice, allowing everyone to contribute equally. We remain committed to advocating inclusion, diversity, and equality into our ITRS family as we grow and enrich our business.

We welcome applications from everyone in the community as we recognize that a diverse workforce is a stronger workforce.