Principal Software Engineer

New

Principal Software Engineers - Applied AI for Microsoft Threat Protection

The Microsoft Security Organization is building the next generation of security ...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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, Python, C#, Go, or Java OR equivalent experience
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
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
6+ years of experience designing, building and operating scalable ML systems, including ML infrastructure and pipelines (Azure ML, Kubernetes), model versioning, observability, and secure deployment, with hands‑on experience in MLOps/AIOps/SecDevOps practices
6+ years of experience building secure, reliable software systems, with applied knowledge of authentication, data protection, access control, and secure coding practices
6+ years of experience designing, building, and operating distributed or cloud‑scale systems (Azure, AWS, or GCP), including production ownership, CI/CD integration, and operating highly available services
2+ years of experience designing and building applications with LLM orchestration frameworks (e.g., LangChain, AutoGen), including agent‑based workflows, RAG pipelines, prompt engineering, and model fine‑tuning/evaluation

Job Responsibility

Design and evolve AI‑driven security systems leveraging large language models, multimodal models, and frontier capabilities to address complex security challenges
Develop contextual knowledge systems, including security graphs, semantic representations, memory frameworks, and high‑quality reasoning over security data
Collaborate across disciplines with Security Engineers, domain experts, and Product Managers to define inclusive, AI‑native security experiences
Partner with AI Infrastructure and Platform teams, Research, and Model Engineering groups to translate security workflows into AI‑optimized architectures
Enable automation, augmentation, and responsible autonomy to drive measurable functional improvements across security solutions
Prototype, validate, and deploy solutions in live production environments while upholding Microsoft standards for security, reliability, privacy, and trust
Shape technical direction for AI Security by influencing architecture, tooling, engineering practices, and shared best practices
Lead cross‑team initiatives spanning security products, platforms, and business units through collaboration and shared ownership
Mentor and sponsor engineers at multiple levels, fostering inclusive technical dialogue, sound engineering judgment, and continuous growth
Contribute to a culture of learning, accountability, and impact across the broader engineering and security community

Fulltime

Principal Architect - Microsoft Threat Protection

Israel is the biggest Microsoft center of excellence in the security domain and ...

Location

Israel , Tel Aviv

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

15+ years of professional experience as a software engineer building large-scale systems
Experience working closely with senior executives, providing strategic and technical guidance
Proven leadership and communication skills, with the ability to inspire and motivate others around you with proven record experience as an architect or tech lead of a group of 100+ engineers
Deep expertise in software development, architecture, and design principles, including experience with distributed computing platforms for high-scale systems and massive amounts of data
Experience with adopting AI tools and automation to improve engineering velocity, code quality, and operational efficiency. While taking into consideration responsible AI principles.Experience leveraging AI tools and automation to enhance engineering velocity, code quality, and operational efficiency, with a strong focus on responsible AI principles

Job Responsibility

Drive and oversee technical initiatives across organizations that deliver substantial business value, utilizing the work of others and shaping the direction of the business
Coordinate initiatives, managing dependencies, and ensuring timely delivery of high-quality solutions
Serve as a key technical advisor and confidant to leaders in the team, aligning closely with their strategies, values, and priorities and shaping their strategy
Attend staff meetings, providing technical insights and helping to shape strategic decisions
Represent the org in various forums, ensuring consistent communication and implementation of leadership directives
Coordinate initiatives, managing dependencies and ensuring timely delivery of high-quality solutions
Provide clear and concise communication of technical issues and solutions to stakeholders at all levels
Provide technical direction and mentorship to engineering teams and leads, fostering a culture of innovation and engineering excellence
Promote a culture of continuous learning and improvement, encouraging professional development and knowledge sharing
Ensure technical decisions align with business goals and promote long-term sustainability and scalability

Fulltime

The Microsoft Security Defender for Office (MDO) Team delivers cloud-based email...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science, or related technical discipline AND 6+ 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 meet Microsoft, customer and/or government security screening requirements are required for this role.
Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.
4+ years applying secure development practices (authentication, data protection, access control, secure coding).
4+ years designing, building, and operating scalable, highly available cloud services or distributed systems (Azure/AWS/GCP), including production ownership + CI/CD integration.
1+ years across AI/ML stack: ingestion, feature engineering, evaluation, Responsible AI (fairness, explainability, bias mitigation, AI safety, governance).

Job Responsibility

Lead the design and implementation of authentication and security foundations that protect Microsoft Defender for Office against advanced threats at cloud scale
Architect and deliver secure‑by‑design, highly scalable services, ensuring solutions meet Microsoft security standards while anticipating future threat models and platform evolution
Operate effectively in ambiguous, fast‑moving environments, providing technical clarity and direction where requirements and threat landscapes evolve rapidly
Collaborate deeply with peer engineers and partner teams across MDO, MSEC, and Substrate to design durable, end‑to‑end security solutions that balance protection, performance, and customer experience
Serve as a security leader and advocate, championing a security‑first mindset through architecture reviews, design guidance, and technical leadership across teams and geographies
Influence platform‑level decisions by identifying systemic security risks, defining mitigations, and driving alignment on long‑term architectural investments
Mentor and raise the security engineering bar across the organization by setting best practices, reviewing critical designs, and modeling resilient security engineering discipline
Partner with stakeholders to ensure solutions meet customer security expectations, compliance requirements, and operational excellence at global scale

Fulltime

Principal Software Engineer - Copilot Security

Copilot Security is at the core of Microsoft’s mission to deliver trusted, human...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor'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 equivalent experience
8+ years in technical engineering roles building large-scale services
6+ years hands-on experience designing and operating security-critical or AI-powered systems at scale, including agentic AI, secure orchestration, or advanced threat defenses
Proven ability to design, build, and ship agentic AI features or frameworks
Ability to clearly explain complex systems and security concepts to technical and non-technical stakeholders and influence cross-org roadmaps
Experience building production agent systems using frameworks such as LangGraph, Amazon Strands SDK, or similar platforms
familiarity with agentic design patterns including tool calling, multi-agent coordination, and secure delegation patterns
Hands-on experience with distributed training frameworks (Ray, Slurm, HPC), containerization and orchestration technologies (Docker, Kubernetes) for ML model deployment, and ML lifecycle management in production environments
Experience designing evaluation frameworks for LLM-based applications and implementing observability for agent systems using tools such as Phoenix, MLFlow, LangFuse, or custom eval harnesses

Job Responsibility

Develop and ship agentic AI-powered security features that proactively protect users from threats such as prompt injection, adversarial manipulation, and abuse of agentic workflows
Design and implement secure orchestration frameworks that enable Copilot to safely delegate, coordinate, and execute actions across devices, services, and platforms
Invent and apply new intelligent agents that leverage information flow analysis and apply common sense and judgement guardrails for security and privacy
Collaborate with product, engineering, security, privacy, and AI teams to drive adoption of agentic security patterns and best practices across Copilot and MAI
Establish and monitor key metrics for agentic AI security and innovation, using data-driven insights to continuously improve defenses and enablement
Align with central Microsoft security and AI roadmaps, influencing platform capabilities and landing them in Copilot and MAI consumer scenarios
Document and evangelize secure agentic AI patterns, ensuring they address novel risks, support safe delegation, and enable responsible orchestration of actions
Mentor engineers and foster a culture of secure innovation, balancing rapid development with rigorous protection for customers

Fulltime

Cloud Solution Architecture -Security (French Speaker)

We are looking for a Cloud Solution Architect (CSA), specializing in Security & ...

Location

France , Multiple Locations

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science, Information Technology, Engineering, Business, or related field AND experience in cloud/infrastructure technologies, information technology (IT) consulting/support, systems administration, network operations, software development/support, technology solutions, practice development, architecture, and/or consulting
OR equivalent experience
French language fluency
experience working in a customer-facing role (e.g., internal and/or external)
experience working on technical projects
Technical Certification in Cloud (e.g., Azure, Amazon Web Services, Google, security certifications)
Azure and Cloud Security Engineering
Infrastructure, Databases, Networking, Virtual Machines Security
Secrets and Keys security practices
Azure Identity (service principals - managed identities)

Job Responsibility

Drive positive Customer Satisfaction & become a trusted advisor and be the Voice of Customer to share insights and best practices, connect with Global Security teams at Microsoft, Engineering and Product teams to remove blockers and influence the solution roadmap
Land an end-to-end value proposition for Security (i.e., Zero Trust) which spans the breadth of Microsoft Security offerings and with focus on Threat Protection, ID + Access Management and Cloud Security as you seek to understand customer requirements and map the adoption and optimization of Microsoft technology solutions accordingly
Position and deliver solutions that drive Security product usage as well as develop opportunities to drive Customer Success business results & help Customers get value from their Microsoft investments in alignment with the Customer Success Account Manager or other Account Team members
Identify resolutions to Customer blockers by leveraging SA subject matter expertise
Deliver according to Microsoft best practices & using repeatable IP and accelerate Business Value of overall Security adoption by improving security posture and ensuring that the solution exhibits “Secure by Design” framework, such as high-performance levels, security, scalability, maintainability, appropriate reusability, and reliability upon deployment
Align individual skilling to team/area demands & Customer Success goals and accelerate customer outcomes - Share expertise, contribute to IP creation & re-use to accelerate customer outcomes
Run Architectural Design Sessions to build a plan for implementing the solution – governing design in line with customer business goals and their technical environment
Collaborate and orchestrate with others in developing complex end-to-end Enterprise solutions with the Microsoft Security platform and modify and deliver existing intellectual property (IP) or, where applicable, create new content

Fulltime

Principal Software Engineer - Copilot Security

Copilot Security is at the core of Microsoft’s mission to deliver trusted, human...

Location

United States , Redmond, WA

Salary:

163000.00 - 296400.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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, Go, or Python OR equivalent experience
8+ years in technical engineering roles building large-scale services
8+ years hands-on experience designing and operating security-critical or AI-powered systems at scale, including agentic AI, secure orchestration, or advanced threat defenses
Proven ability to design, build, and ship agentic AI features or frameworks
Ability to clearly explain complex systems and security concepts to technical and non-technical stakeholders and influence cross-org roadmaps
Experience building production agent systems using frameworks such as LangGraph, Amazon Strands SDK, or similar platforms
familiarity with agentic design patterns including tool calling, multi-agent coordination, and secure delegation patterns
Hands-on experience with distributed training frameworks (Ray, Slurm, HPC), containerization and orchestration technologies (Docker, Kubernetes) for ML model deployment, and ML lifecycle management in production environments
Experience designing evaluation frameworks for LLM-based applications and implementing observability for agent systems using tools such as Phoenix, MLFlow, LangFuse, or custom eval harnesses
understanding of AI safety evaluation methodologies including adversarial testing and red-teaming

Job Responsibility

Develop and ship agentic AI-powered security features that protect users from threats such as prompt injection, adversarial manipulation, and abuse of agentic workflows
Design and implement secure orchestration frameworks that enable Copilot to safely delegate, coordinate, and execute actions across devices, services, and platforms
Invent and apply new intelligent agents that leverage information flow analysis and apply common sense and judgement guardrails for security and privacy
Collaborate with product, engineering, security, privacy, and AI teams to drive adoption of agentic security patterns and best practices across Copilot and MAI
Monitor key metrics for agentic AI security and innovation, using data-driven insights to improve defenses and enablement
Align with central Microsoft security and AI roadmaps, landing platform capabilities in Copilot and MAI consumer scenarios
Document secure agentic AI patterns, ensuring they address novel risks, support safe delegation, and enable responsible orchestration of actions

Fulltime

Cloud Solution Architect

We are looking for a Cloud Solution Architect (CSA), specializing in Security & ...

Location

Jordan , Multiple Locations

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science, Information Technology, Engineering, Business, or related field AND 4+ years experience in cloud/infrastructure technologies, information technology (IT) consulting/support, systems administration, network operations, software development/support, technology solutions, practice development, architecture, and/or consulting
OR equivalent experience
experience working in a customer-facing role (e.g., internal and/or external)
experience working on technical projects
Technical Certification in Cloud (e.g., Azure, Amazon Web Services, Google, security certifications)
Azure and Cloud Security Engineering
Infrastructure, Databases, Networking, Virtual Machines Security Secrets and Keys security practices
Azure Identity (service principals - managed identities)
Troubleshooting of data logging and audit, security monitoring
Azure Governance and Compliance (Azure policies)

Job Responsibility

Drive positive Customer Satisfaction & become a trusted advisor and be the Voice of Customer to share insights and best practices, connect with Global Security teams at Microsoft, Engineering and Product teams to remove blockers and influence the solution roadmap
Land an end-to-end value proposition for Security (i.e., Zero Trust) which spans the breadth of Microsoft Security offerings and with focus on Threat Protection, ID + Access Management and Cloud Security as you seek to understand customer requirements and map the adoption and optimization of Microsoft technology solutions accordingly
Position and deliver solutions that drive Security product usage as well as develop opportunities to drive Customer Success business results & help Customers get value from their Microsoft investments in alignment with the Customer Success Account Manager or other Account Team members
Identify resolutions to Customer blockers by leveraging SA subject matter expertise. Deliver according to Microsoft best practices & using repeatable IP and accelerate Business Value of overall Security adoption by improving security posture and ensuring that the solution exhibits “Secure by Design” framework, such as high-performance levels, security, scalability, maintainability, appropriate reusability, and reliability upon deployment
Align individual skilling to team/area demands & Customer Success goals and accelerate customer outcomes - Share expertise, contribute to IP creation & re-use to accelerate customer outcomes
Run Architectural Design Sessions to build a plan for implementing the solution – governing design in line with customer business goals and their technical environment. Outcome is consensus on solution design and next steps toward production
Collaborate and orchestrate with others in developing complex end-to-end Enterprise solutions with the Microsoft Security platform and modify and deliver existing intellectual property (IP) or, where applicable, create new content

Fulltime

Principal Security Engineer Manager

The Microsoft Offensive Research & Security Engineering (MORSE) team is looking ...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

7+ years experience in identifying security vulnerabilities, software development lifecycle, large-scale computing, modeling, cyber security, and anomaly detection
1+ year(s) people management
Ability to meet Microsoft, customer and/or government security screening requirements
Microsoft Cloud Background Check

Job Responsibility

Champion team health by building a positive culture, advocating for your team, and ensuring alignment with organizational goals
Support career growth by understanding team members’ goals, offering feedback, resolving conflicts, and charting long-term paths for success
Act as a conduit for feedback and help shape processes and improvements that make the organization more effective
Collaborate on engineering projects to drive scalable platform security and land secure outcomes for strategic business bets
Innovate and stay current on emerging threats, attacker techniques, and ecosystem mitigations to devise new security protections
Collaborate with product teams to influence decisions, articulate the business value of security, and strengthen cross-org partnerships

Fulltime

Principal Software Engineer - Microsoft Threat Protection

Microsoft Corporation

Location:
Israel , Tel Aviv, Herzliya

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
March 04, 2026

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Job Description:

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Job Posted:March 04, 2026

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