Senior Software Engineer - IC3 Messaging
Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Aug 31, 2026. Microsoft scores B on the Alion truth index.
Do you want to build foundational security and messaging capabilities used by Microsoft 365 and Teams? Our team develops IC3 Messaging Store services and owns a data-at-rest encryption SDK. Our work helps keep customer communications secure, reliable, and available at global scale.
As a Senior Software Engineer on our team, you will design, implement, test, deploy, and operate backend services whose availability, performance, and data protection directly affect customer-facing Teams scenarios. This opportunity will allow you to deepen your expertise in distributed systems, planet-scale cloud services, asynchronous event processing, observability, and resilience engineering while collaborating with teams across services and regions.
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
Collaborate with engineering, product, security, support, and partner teams to determine user requirements and drive project plans, release plans, and well-scoped work items for secure and reliable Microsoft 365 messaging scenarios.
Drive the identification of dependencies and the development of design documents for features and services across IC3 messaging.
Create, implement, optimize, debug, refactor, and reuse code to improve service performance, maintainability, effectiveness, and return on investment.
Act as a Designated Responsible Individual (DRI), develop and follow operational playbooks, and participate in the on-call rotation to monitor service health.
Proactively learn and apply technical solutions and patterns that improve availability, reliability, efficiency, observability, security, performance, and operational consistency at scale.
Mentor engineers through design reviews, code reviews, and technical coaching, and contribute to improving the team's engineering foundation.
Qualifications
Required Qualifications:
- Bachelor's Degree in Computer Science or related technical field, or equivalent experience.
- Experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.
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:
- Professional experience developing and operating production software.
- Experience developing and operating large-scale, highly available distributed services, preferably on Kubernetes.
- Experience with multi-region cloud systems, NoSQL data stores, caching, asynchronous messaging, CI/CD pipelines, and observability tools.
- Experience defining and using service-level objectives, operational readiness criteria, telemetry, incident-response processes, and cross-team delivery practices.
- Experience with and interest in cryptography.
Software Engineering IC4 - The typical base pay range for this role across Czechia is Kč 1,338,000.00 - Kč 2,448,000.00 per year. Certain roles may be eligible for benefits and other compensation.
Find additional benefits and pay information here:
https://careers.microsoft.com/v2/global/en/corporate-pay/czech-republic-corporate-pay.html
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.