New

Software Engineer

Microsoft
$119,800.00 - $234,700.00 / yr
United States, Washington, Redmond
Mar 09, 2026
Overview As a Senior Software Engineer on the Copilot Security engineering team, you will design and build durable, highquality systems that harden Microsoft's agentic and autonomous AI stack. You will engineer securitycritical capabilities spanning adversarial evaluation infrastructure, telemetry and provenance services, reproducibility tooling, and runtime guardrails that reduce realworld security risk across Copilot components, and emerging agents. Your work strengthens Microsoft's crossecosystem security posture by converting threat patterns and XPIA risks into robust, repeatable engineering solutions-advancing the team mission to embed agentic security deeply and consistently across the Copilot architecture. You will collaborate closely with adversarial testing, applied science, and partner security and engineering teams to build securebydesign components, close the loop from attack simulation to defense deployment, and drive measurable improvements in safety, resilience, and system integrity. Microsoft's mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond. Responsibilities Core Engineering Design, build, and maintain secure, reliable services and libraries powering adversarial testing, evaluation workflows, and mitigation pipelines for agentic and autonomous AI systems. Implement adversarial test harnesses (jailbreak, prompt injection, toolchain misuse) and integrate them into shared evaluation systems such as SEVAL/CARES to ensure auditable, repeatable results. Own engineering components that support provenance, telemetry, reproducibility, and governance within the shared Agentic Security Platform. Ensure services meet high bars for reliability, performance, scalability, and security-particularly under adversarial or malformed input conditions. Security & Evaluation Integration Translate top XPIAclass risks into testable engineering requirements and durable mitigations. Develop interfaces and hooks enabling secure orchestration, validation, and integration with downstream systems across Copilot's shared security layers. Contribute code and instrumentation supporting endtoend workflows from attack simulation detection defense deployment validation. CrossFunctional Collaboration Partner with applied scientists, adversarial testers, and PM/TPM to define engineering requirements, ensure alignment with evaluation criteria, and integrate scientific insights into production systems. Participate in design reviews, drive highquality engineering decisionmaking, and establish technical patterns that propagate securebydesign practices. Where appropriate, support MSRC case triage by supplying engineering analysis and converting systemic issues into reusable mitigations. Team & Technical Leadership Contribute to architectural planning for shared security services and reusable defense modules across the broader Copilot Security platform. Mentor junior engineers through code reviews, design guidance, and bestpractice coaching in secure and resilient engineering. Help cultivate a culture of proactive security, correctness, and high engineering rigor across the team. Qualifications Required Qualifications: Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Other Requirements: Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter. Preferred Qualifications: Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Ability to operate effectively in highly ambiguous, rapidly evolving security and AI ecosystems. Work onsite requirements vary by location and follow organizational guidance. This role may involve work with sensitive or confidential AI model data in accordance with Microsoft's Responsible AI and Security practices. Experience building production systems, services, or frameworks with strong debugging, testing, and CI/CD practices. Familiarity with distributed systems, cloudbased services, or secure system design patterns. #Copilot #LLM #Agent #Security Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.