Cloud Test Automation Engineer at Halcyon

What we do: Halcyon is the industry’s first dedicated, adaptive security platform that combines multiple proprietary advanced prevention engines along with AI models focused specifically on stopping ransomware. Who we are: Halcyon was formed in 2021 by a team of cyber industry veterans after battling the scourge of ransomware (and advanced threats) for years at some of the largest global security vendors. Comprised of leaders from Cylance (now Blackberry), Accuvant (now Optiv), Fireye and ISS X-Force (now IBM), Halcyon is focused on building products and solutions for mid-market and enterprise customers. As a remote-native, completely distributed global team, we recognize great talent can exist anywhere. We invite you to apply to a job you’re interested in and we'll work a plan to meet your needs. The Role: Halcyon’s mission is to deliver an anti-ransomware solution that redefines what a security product can achieve. To support this vision, we’re hiring a Cloud Test Engineer to help strengthen our automated testing and quality practices across Halcyon’s cloud platform, including APIs, integrations, and backend components. You’ll work closely with our cloud development and test teams to build reliable, scalable test automation that ensures our products perform under real-world conditions. This role is heavily focused on Python-based API testing in AWS environments, with some exposure to UI validation and performance testing. Responsibilities: • Enhance Halcyon’s internal cloud API automation framework • Build, maintain, and scale automated test suites using Python and PyTest • Collaborate with developers and product managers to analyze requirements, uncover edge cases, and design test coverage • Support the setup and maintenance of test environments for cloud-based applications • Design utilities and tooling that improve test coverage and validation visibility • Execute and analyze functional, regression, and smoke tests through GitHub Actions CI/CD pipelines • Validate AWS workflows (S3, DynamoDB, SQS, SNS) and APIs • Create clear and concise bug reports, test documentation, and results summaries • Contribute to and uphold coding style and quality standards Required Skills and Qualifications: • 3–5+ years of experience as a Cloud Test Engineer, QA Automation Engineer, or similar role • Strong Python development skills and deep familiarity with PyTest (fixtures, parameterization, decorators) • Experience testing cloud-based microservices and APIs • Hands-on with AWS, including services like S3, DynamoDB, SQS, SNS • Exposure to Docker, Kubernetes, or VMware environments • Familiarity with CI/CD pipelines (GitHub Actions preferred; Jenkins or CircleCI acceptable) • Knowledge of REST/gRPC, JSON/Protobuf, and API authentication flows • Strong analytical skills and creativity in translating evolving requirements into robust, automated test scenarios • Strong communication skills, including documentation and reporting • Ability to work independently while collaborating effectively as part of a team • Ability to thrive in a dynamic, high-growth start-up environment where collaboration and innovation are valued Bonus Skills and Qualifications: • Experience with performance or load testing (k6, JMeter, Locust, etc.) • Experience developing automated tests for Linux applications • Understanding of web application or infrastructure security concepts Benefits: Halcyon offers the following benefits to eligible employees: • Comprehensive healthcare (medical, dental, and vision) with premiums paid in full for employees and dependents. • 401k plan with 3% employer contribution • Short and long-term disability coverage, basic life and AD&D insurance plans. • Medical and dependent care FSA options. • Flexible Unlimited PTO • Parental leave • Generous equity offering The Company reserves the right to modify or change these benefits programs at any time, with or without notice. #LN-DNI Base Salary Range: $140-175k 10% bonus, and equity. In accordance with applicable state and federal laws, the range provided is Halcyon’s reasonable estimate of the base compensation for this role. The actual amount may differ based on non-discriminatory factors such as experience, knowledge, skills, abilities, and location. Base pay is one part of the total package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and equity in the Company. We understand it takes a diverse team of highly intelligent, passionate, curious, and creative people to develop the exceptional product we are building. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity employer.