Microsoft

About the Company

Every company has a mission. What's ours? To empower every person and every organization to achieve more. We believe technology can and should be a force for good and that meaningful innovation contributes to a brighter world in the future and today. Our culture doesn’t just encourage curiosity; it embraces it. Each day we make progress together by showing up as our authentic selves. We show up with a learn-it-all mentality. We show up cheering on others, knowing their success doesn't diminish our own. We show up every day open to learning our own biases, changing our behavior, and inviting in differences. Because impact matters.

Microsoft operates in 190 countries and is made up of approximately 228,000 passionate employees worldwide.

Listed Jobs

Company Name

Microsoft

Job Title

Software Engineer - CTJ - Poly

Job Description

**Job Title:** Software Engineer - CTJ - Poly **Role Summary:** Develop and enhance cloud security solutions to protect government environments, focusing on scalable, reliable services for advanced threat detection and prevention. **Expectations:** Candidates must hold an active U.S. Top Secret Security Clearance with Sensitive Compartmented Information (SCI) access via a Single Scope Background Investigation (SSBI) with polygraph. U.S. citizenship verification is mandatory. Must pass Microsoft Cloud background checks upon hire/transfer and every two years. **Key Responsibilities:** - Design and implement cloud-based security services, ensuring scalability and reliability. - Improve engineering systems and practices for complex cloud environments. - Automate service scale features and address customer requirements. - Investigate and resolve production and pre-production issues, deploying fixes. - Participate in 24/7 on-call rotations within secure facilities. **Required Skills:** - Proficiency in C, C++, C#, Java, JavaScript, or Python. - Experience with PowerShell and C#. - Strong problem-solving and collaboration in cross-functional teams. **Required Education & Certifications:** - Bachelor’s degree in Computer Science or related field (or equivalent experience). - Active U.S. Top Secret/SCI clearance with SSBI-polygraph verification. - U.S. citizenship confirmed via valid government documents.

Reston, United states

On site

Junior

12-09-2025

Company Name

Microsoft

Job Title

Site Reliability Engineer - CTJ - Top Secret

Job Description

Redmond, United states

On site

Junior

12-09-2025

Company Name

Microsoft

Job Title

Research Engineer – Generative AI – AI Frontiers

Job Description

Job Title: Research Engineer – Generative AI – AI Frontiers Role Summary: Design, develop, and execute research projects on large‑scale language models and agentic AI, advancing pre‑training, mid‑training, and post‑training pipelines through reinforcement learning and multimodal integration. Expectations: Deliver novel insights, prototype scalable services, publish results, and collaborate across disciplines to push performance and safety of LLMs and autonomous agents. Key Responsibilities - Develop and optimize large‑scale models using Python, PyTorch, or JAX. - Contribute to pre‑training, long‑context extension, instruction tuning, and reinforcement learning from feedback pipelines. - Debug, profile, and scale distributed training workloads; work with frameworks such as Megatron, vLLM, or Ray. - Build and maintain action‑model components that enable agents to interact with digital environments. - Coordinate multi‑agent orchestration, integrating human feedback and oversight. - Validate safety, efficiency, and robustness of new architectures. - Publish findings internally and externally per open‑publication policy. Required Skills - 2+ years of research/engineering experience in ML or 1+ year with a master’s/Ph.D.; equivalent experience acceptable. - Proficient in Python and PyTorch or JAX; experience in distributed training and profiling. - Familiarity with large‑language‑model architecture, optimizations, and CUDA kernel basics. - Foundational understanding of reinforcement learning and its key challenges. - Knowledge of pre‑training/mid‑training/post‑training pipelines (language or multimodal). - Experience with large‑scale model systems such as Megatron, Ray, or vLLM a plus. - Ability to build scalable, production‑grade services. Required Education & Certifications - Bachelor’s in Computer Science or related field and 2+ years experience, OR - Master’s in Computer Science or related field and 1+ year experience, OR - Ph.D. in Computer Science or related field, OR - Equivalent professional experience.

Redmond, United states

Hybrid

Junior

07-09-2025

Company Name

Microsoft

Job Title

Principal Security Researcher

Job Description

Job Title: Principal Security Researcher Role Summary: Lead advanced threat research and hunting for Microsoft’s Global Hunting, Oversight, and Strategic Triage (GHOST) team, focusing on identifying attacker TTPs, developing mitigation recommendations, and driving product and tooling improvements. Expectations: Deliver actionable threat intelligence, build and prototype threat‑hunting tools, influence security product roadmap, and maintain high‑quality communication with customers and engineering partners. Key Responsibilities: - Conduct in‑depth analysis of attacker activity in on‑premises and cloud environments. - Identify potential threats, perform proactive defense, and notify customers of imminent attacks. - Provide recommendations to improve customers’ cybersecurity posture and conduct knowledge transfer sessions. - Build proof‑of‑concept and prototype threat hunting tools, automations, and new capabilities. - Convey research insights to engineering partner teams to drive product and tooling enhancements. - Prioritize complex security issues, implement mitigations, and provide proactive guidance. - Synthesize research findings into actionable mitigation recommendations and share across teams to drive change. Required Skills: - Expertise in threat hunting, anomaly detection, and large‑scale computing. - Proficient in software development lifecycle and modeling/analytics. - Deep knowledge of malware, identity‑based attacks, and modern threat landscape. - Experienced with SQL, Kusto Query Language (KQL), and other SIEM query languages (Splunk, Humio, Kibana). - Skilled in Jupyter Notebooks or similar scripting environments for threat hunting automation. - Consulting experience and strong communication skills. - Active Directory subject matter expertise. - Strong analytical, investigative, and problem‑solving abilities. Required Education & Certifications: - Master’s degree in Statistics, Mathematics, Computer Science, or related field (Doctorate preferred). - Must pass Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Wales, United kingdom

Remote

Senior

07-09-2025