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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - M365 Core - **Company:** Microsoft - **Location:** Redmond, WA, United States (Remote available) - **Experience:** Expert - **Salary:** $119,800.0 - $234,700.0 - **Contract:** Permanent contract - **Skills:** C (Programming Language), Java (Programming Language), JavaScript (Programming Language), Microsoft Online Services, C Sharp (Programming Language), C++ (Programming Language), Software Debugging, Software Design Documents, Distributed Systems, Python (Programming Language), Key Management, Microsoft Security Essentials, Cloud Services, Secure Coding, Software Engineering, Software Vulnerability Management, SSL Certificate Management, Data Processing, Software Security, Information Technology - **Published:** May 15, 2026 - **Apply:** https://seeker-sp.worksourcewa.com/jobview/GetJob.aspx?JobID=293415600 ## About the Role + 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. + Experience designing, building, or contributing to cloud-based services or distributed systems. + Demonstrated strength in technical design, architecture, and systems-level thinking. + Experience working with one or more security-related areas, such as secrets management, threat modeling, vulnerability mitigation, key or certificate management, or identity and access systems. \#M365Core 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. ## Description We are seeking a Senior Software Engineer - M365 Core to help us take the platform to the next level and deliver on our promises of fabric unification and turn-key developer experience. You will partner closely with security, privacy, compliance, and platform teams to embed security into COSMIC. As a Senior Software Engineer - M365 Core you will be working on design, implementation of security related features. You will collaborate with other COSMIC teams and other orgs as security spreads across the orgs. This opportunity will allow you to accelerate your career, develop new skills, and become a security expert in distributed systems. This is a flexible work opportunity and there is an option to work fully remotely. 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** + Collaborates with appropriate stakeholders to determine user requirements for a scenario. + Drives identification of dependencies and the development of design documents for a product, application, service, or platform. + Creates, implements, optimizes, debugs, refactors, and reuses code to establish and improve performance and maintainability, effectiveness, and return on investment (ROI). + Leverages subject-matter expertise of product features and partners with appropriate stakeholders (e.g., project managers) to drive a workgroup's project plans, release plans, and work items. + Acts as a Designated Responsible Individual (DRI) and guides other engineers by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate. + Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale. + Ensures compliance with Microsoft security standards, including **SDL**, **secure coding practices**, and **data handling policies** + Supports secure operational practices, including **zero-trust principles**, certificate rotation, secure deployment, and end-to-end validation ## Related Videos - [Develop enterprise-ready applications for Microsoft Teams with Azure resources on modern web technologies](https://www.wearedevelopers.com/videos/187-develop-enterprise-ready-applications-for-microsoft-teams-with-azure-resources-on-modern-web-technologies) - [How to Cause (or Prevent) a Massive Data Breach- Secure Coding and IDOR](https://www.wearedevelopers.com/videos/39-how-to-cause-or-prevent-a-massive-data-breach-secure-coding-and-idor) - [Leverage Cloud Computing Benefits with Serverless Multi-Cloud ML ](https://www.wearedevelopers.com/videos/78-leverage-cloud-computing-benefits-with-serverless-multi-cloud-ml) - [This Machine Ends Data Breaches](https://www.wearedevelopers.com/videos/574-this-machine-ends-data-breaches) - [Psychological Safety in Software Engineering - Jenny-Margrethe Vej & Alexandra Hou Aldershaab](https://www.wearedevelopers.com/videos/2142-psychological-safety-in-software-engineering-jenny-margrethe-vej-alexandra-hou-aldershaab) - [How GitHub secures open source](https://www.wearedevelopers.com/videos/1450-how-github-secures-open-source) ## Related Articles - [How Much Does a Software Engineer Make? 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