Senior Software Development in Test

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s possible to empower our team and support our customers in building a safer global future. Overview of Opportunity We are seeking a Senior Software Development in Test to join our team. In this role, you will be responsible for developing and executing comprehensive manual functional and user-acceptance tests to assess software product quality. However, your work will extend beyond isolated software testing to include evaluating how custom applications, distributed architectures, and interoperable non-kinetic data streams function as a unified ecosystem. As our testing practices evolve, you will assist in implementing automated testing frameworks to scale these efforts. Additionally, you will contribute to new testing strategies aimed at verifying AI-assisted code development, ensuring the robustness and integrity of our software ecosystem. 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. Location: This role is expected to be on-site at TST’s Arlington headquarters 4-5 days per week. Responsibilities: Build and maintain production-grade test infrastructure—frameworks, CI/CD pipelines, hardware-in-the-loop simulation services, and developer tooling—as software products (code-reviewed, versioned, instrumented, and owned end-to-end). Design reusable libraries and APIs (Python/Go) that let engineers express contract, property-based, and mutation tests in a few lines—not write one-off scripts. Perform full-stack system testing via API endpoints, hardware interfaces, and diagnostic tooling to isolate and investigate the root causes of complex technical problems. Develop functional, end-to-end, regression, and performance tests that validate the seamless integration of software with physical hardware components. Evaluate how hardware endpoints, distributed architectures, and interoperable data streams function together as a unified, mission-ready ecosystem. Design and maintain the testing environment to ensure that hardware and software configurations accurately mirror operational deployments. Assist in the progressive rollout and implementation of automated testing frameworks to scale existing manual integration efforts. Design and implement testing strategies to verify the quality, robustness, and integrity of AI-assisted code development. Detect, document, and track system-level defect reports and feature requests. Operational Schedule Integration: Trace and…