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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Test Engineer - **Company:** Two Six Technologies - **Location:** Arlington, VA, United States - **Experience:** Expert - **Salary:** $96,700.0 - $140,000.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), JavaScript (Programming Language), Agile Methodology, Artificial Intelligence, Amazon Web Services, Automation of Tests, Bash Shell, Cloud Computing, Computer Networks, Distributed Systems, Interoperability, Python (Programming Language), OpenLayers, Ansible, Selenium, SQL Databases, Data Streaming, Strategies of Testing, Virtualization Technology, VMware VSphere, Web Applications, Performance Testing, Cypress (Programming Language), Integration Tests, Playwright, Non-relational Database, Docker - **Published:** June 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9004198/senior-software-test-engineer ## About the Role * 5+ years of software testing experience, with exposure to web automation tools (e.g., Selenium, Playwright, Cypress, etc.). * 3+ years of experience with backend API testing, integration testing, and functional testing. * Solid understanding of networking concepts, distributed systems, and cross-network data flows. * Experience with UNIX / LINUX-based operating systems. * Experience with SQL or other relational/non-relational database technologies. * Familiarity with, or a strong interest in, modern development workflows using AI-assisted coding tools and methods for verifying code integrity. * Experience testing complex, data-heavy systems or interoperable data streams. * Solid grasp of technical writing and documentation. * Bachelor's degree in a relevant field, or comparable professional experience., * Military cyber experience, networking experience, or understanding of common military, cyber, and networking vernacular. * Familiarity with AI development and testing capabilities. * Familiarity with virtualization or cloud technologies such as Docker, vSphere, Ansible, or AWS. * Understanding of the Agile Software Development Life Cycle. * Experience refining low-level testing or configuration scripts using Bash, Python, or Javascript. * Experience with creating automated tests for geospatial libraries such as OpenLayers and CesiumJS. Clearance Qualifications: * Eligible to obtain and maintain a TS/SCI security clearance. ## Description You will collaborate closely with program engineering, development, and field operations teams to establish testing processes, evaluate complex features, and isolate critical defects. You will play a vital role in ensuring mission readiness, validating intricate data flows across multiple disparate networks, and aligning the entire test life cycle directly with strategic operational timelines., * Perform software product testing via website interactions and tooling to investigate possible causes of problems. * Develop functional, end-to-end, regression, and performance tests in manual test environments. * Evaluate how custom web applications, distributed architectures, and interoperable data streams function together as a unified ecosystem. * Assist in the progressive rollout and implementation of automated testing frameworks to scale existing manual efforts. * Contribute to the design of new testing strategies aimed at verifying the quality, robustness, and integrity of AI-assisted code development. * Detect, document, and track software defect reports and feature requests. * Understand, reproduce, and troubleshoot product defects, collaborating closely with developers to determine the best resolution. * Assist in the planning and implementation of Testing-Team processes and solutions in alignment with program and operational timelines. ## Related Videos - [Proactive monitoring and smoke testing in your production environment](https://www.wearedevelopers.com/videos/139-proactive-monitoring-and-smoke-testing-in-your-production-environment) - [The 2025 State of JavaScript Testing](https://www.wearedevelopers.com/videos/1678-the-2025-state-of-javascript-testing) - [Dev & Test in the Cloud? Deploy your cloud environments with Ansible & Terraform](https://www.wearedevelopers.com/videos/1607-dev-test-in-the-cloud-deploy-your-cloud-environments-with-ansible-terraform) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [How not to test ](https://www.wearedevelopers.com/videos/175-how-not-to-test) - [Old tools, new tricks](https://www.wearedevelopers.com/videos/1916-old-tools-new-tricks) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)