Senior Systems Software Engineer

About Us:

Sauce Labs is the world's largest full-lifecycle, test automation platform, and the company behind Selenium. Trusted by 80% of the world's top ten largest financial institutions and over 300,000 enterprise users, Sauce Labs provides the only AI platform capable of turning business intent into autonomous testing and quality assurance. With a proprietary dataset of 8.7 billion test runs, Sauce Labs empowers the Fortune 2000 to bridge the gap between AI-driven code generation and enterprise-grade software quality. Learn more at saucelabs.com.

The Role:

As a Senior Systems Software Engineer, you will be a key individual contributor to the design and implementation of the Error-Reporting/Backtrace platform. You will focus on building high-performance features that allow our customers to analyze multi-dimensional data and debug production issues at scale.

Leveraging your expertise in native, low-level systems (Rust, C/C++), you will work directly on our custom columnar database and core backend services. You are expected to be a master of your craft, writing efficient code while maintaining a DevOps mindset to ensure the platform remains scalable and reliable. You will work within a global team, taking ownership of complex components and translating technical requirements into robust software solutions.

Responsibilities:

• Implement and maintain core subsystems including work scheduling, networking (HTTP), storage, and indexing. You will write performance-critical code in Rust and C/C++.


• Implement and refine OpenTelemetry integrations (metrics, tracing, and profiling) and build out Grafana dashboards to monitor system health and performance.


• Take ownership of technical tasks from design to deployment, ensuring they meet the high standards of our performance-sensitive environment.


• Provide guidance to junior and mid-level engineers through code reviews, pair programming, and documentation.


• Participate in the on-call rotation and contribute to the automation of the software development lifecycle (CI/CD) to improve team velocity.


• Assist in the development and integration of AI-driven features and agents that enhance internal workflows and customer debugging experiences.

Required Skills:

• 5+ years of professional development experience, with a heavy focus on C/C++ and Rust.


• Strong understanding of systems programming, including memory management, concurrency, and I/O.


• Experience building or maintaining distributed systems or high-performance databases.


• Proficiency with cloud infrastructure, specifically GCP or AWS.


• Hands-on experience with Docker, Kubernetes, and CI tools like Jenkins.


• Expertise in debugging complex systems using both live and post-mortem tools.


• A pragmatic approach to problem-solving—you value "done" over "perfect" but never sacrifice system stability.


• Effective communication skills for collaborating with a distributed, global team.

This Saucer can be found globally.  We believe in the power of in-person collaboration to build strong relationships and drive innovation. To support this, our office models are tailored by region:

• Poland, Berlin, and the US: We operate on a hybrid basis, offering flexibility alongside collaboration with in-office days as required.


• India: We operate in-office 5 days a week to maximize team synergy and real-time collaboration and mentorship.

Regardless of location, Saucers living near an office are expected to be present and engaged with their local teams.

Please note our privacy terms when applying for a job at Sauce Labs.

Sauce Labs is proud to be an Equal Opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender identity/expression/status, sexual orientation, age, marital status, veteran status or disability status.

Security responsibilities at Sauce

At Sauce, we will commit to supporting the health and safety of employees and properties, partnering with internal stakeholders to learn and act on ever-evolving security protocols and procedures. You’ll be expected to fully comply with all policies and procedures related to security at the department and org wide level and exercise a ‘security first’ approach to how we design, build & run our products and services.