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Horizon3 AI Logo

Software Developer Engineer in Test

Horizon3 AI

$155,000 - $208,000
Aug 26, 2025
Remote, US
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Horizon3's mission is to enable organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them. We are a fast-growing, remote cybersecurity company using automation and artificial intelligence to deliver Autonomous Penetration Testing as a Service (APTaaS).

Requirements

  • Proficient in Python or JavaScript/TypeScript
  • Strong experience with Playwright
  • Strong experience testing GQL APIs, Neo4j, Kubernetes and microservices.
  • Solid experience with AWS services such as EC2, S3, Lambda, RDS, DynamoDB, CloudWatch, and IAM.
  • Familiarity with Infrastructure as Code (IaC) tools like Terraform or AWS CloudFormation.
  • Hands-on experience with CI/CD pipeline, gitlab-ci
  • Ability to analyze logs, use monitoring tools (e.g., CloudWatch, Datadog), and debug issues in a distributed environment.

Responsibilities

  • Design, develop, and maintain automated test frameworks, test suites and test infrastructure
  • Perform manual testing as needed for exploratory, usability, and edge-case testing.
  • Collaborate closely with developers, product managers, and other QA team members to define test strategies, test cases, and acceptance criteria.
  • Write clear and concise bug reports and track issues through resolution.
  • Integrate tests into CI/CD pipelines to ensure fast feedback and code quality.
  • Participate in code reviews and architecture discussions related to testing.
  • Work under loose supervision and drive tasks to completion

Other

  • 3–6+ years of experience in QA Engineering, SDET, or a similar backend-focused testing role.
  • Solid understanding of software QA methodologies, tools, and processes.
  • Excellent communication and problem-solving skills.
  • Experience with containerized environments using Docker and Kubernetes.
  • We are a fully remote company, and this job may require up to 5% of travel to be successful.