Software Engineer II and Senior Software Engineer (Mutiple Positions)

Job ID: 200066965Posted: 2026-11-12Location: United States, Washington, RedmondSalary: USD $102,100 - $202,200 per yearEmployment type: Full-TimeWork site: 3 days / week in-officeRole type: Individual ContributorTravel: Less than 25%Profession: Software EngineeringDiscipline: Software EngineeringCompany: MicrosoftOverviewMicrosoft Security is building Project Perception, a flagship agentic security product designed for the realities of AI-era defense. Project Perception coordinates specialized red, blue, and green AI agents that continuously expose security gaps, detect and investigate threats, and remediate and harden environments at machine speed. Defenders remain in control through objectives, guardrails, approvals, and supervision of critical actions. You will join the Project Perception Experiences team. This team is central to the product and owns the end-to-end customer experience, including the UI/UX and the APIs and services that power it. We build the surfaces through which security teams configure agents, launch and monitor playbooks, investigate results, supervise agentic work, and turn complex security reasoning into clear, trustworthy actions. As a Full-Stack Software Engineer, you will take hands-on technical leadership for central areas of the product experience. You will work across modern web experiences, API contracts, service integration, and production operations to deliver coherent workflows from the browser through the backend. You will partner closely with product management, design, security researchers, and AI platform teams to translate ambitious scenarios into reliable, secure, accessible, and intuitive customer experiences. We are looking for Software Engineer II and Senior Software Engineers who are self-motivated, hardworking, and driven to take ownership. We welcome diverse perspectives and paths into engineering. You will solve complex problems, support others, and lead hands-on development of a flagship product that helps defenders work with AI agents across Microsoft Security. 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. ResponsibilitiesOwn scoped Project Perception features end to end, from workflow and UI implementation through APIs, service integration, testing, rollout, and production support.Build responsive, accessible web experiences with TypeScript, React, or comparable frontend technologies.Build secure, scalable APIs and backend services that connect the experience to agents, security data, context, actions, and AI capabilities.Make complex security workflows intuitive: configure agents, run playbooks, monitor sessions, review evidence, and approve or redirect actions.Prototype ideas, validate them with customer feedback and measurable outcomes, and develop promising concepts into production features.Contribute to frontend, API, and service designs, making sound engineering tradeoffs with guidance from experienced teammates and attention to security, privacy, accessibility, reliability, performance, cost, and maintainability.Deliver well-defined features and work through ambiguity with support: clarify requirements, break work into manageable tasks, communicate progress, raise risks early, and participate in design and code reviews.Collaborate with product, design, security research, and platform teams to deliver a cohesive experience and contribute to shared engineering practices.Build and operate reliable customer-facing features with robust testing, observability, safe deployments, incident response, and continuous improvement. QualificationsRequired Qualifications: Bachelor's Degree in Computer Science or related technical field AND 2+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or PythonOR equivalent experience. Preferred 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 PythonOR equivalent experience. Experience building and operating large-scale, enterprise-grade software systems.Experience developing production frontend and web applications using React or Angular, Hypertext Markup Language, Cascading Style Sheets, and modern browser performance practices.Experience designing and building secure application programming interfaces, backend services, cloud-based systems, and data integrations.Experience delivering end-to-end solutions spanning web experiences, secure services, data platforms, and artificial intelligence capabilities.Experience creating accessible, customer-focused user experiences and making thoughtful technical tradeoffs.Experience applying security, authentication, privacy, threat modeling, governance, reliability, observability, performance, deployment, and live-site practices.Experience using artificial intelligence-powered workflows or artificial intelligence-assisted engineering tools, participating in design and code reviews, and collaborating across functions.Software Engineering IC3 - The typical base pay range for this role across the U.S. is USD $102,100 - $202,200 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 $133,800 - $219,200 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: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 $160,200 - $261,000 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: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.