{"id":2673416,"url":"https://alion.io/job/microsoft-senior-software-engineer-ic3-messaging","title":"Senior Software Engineer - IC3 Messaging","company":{"id":18,"name":"Microsoft","domain":"microsoft.com","url":"https://alion.io/company/microsoft","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Eightfold","truth_index":{"grade":"B","score":75,"open_postings":93,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":28,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Czech Republic"],"countries":["CZ"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":1338000,"max":2448000,"currency":"CZK","period":"year","gross":null,"usd_annual":114295},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"JavaScript","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"CI/CD","optional":true},{"name":"Kubernetes","optional":true}],"status":"live","first_seen_at":"2026-08-31T17:40:34Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-10-16T18:13:55Z","board_verified":true,"closed_at":null,"days_open":46,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":46},"description":"OverviewDo 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.\nAs 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.\nMicrosoft’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.\nResponsibilities\nCollaborate 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.\nDrive the identification of dependencies and the development of design documents for features and services across IC3 messaging.\n\nCreate, implement, optimize, debug, refactor, and reuse code to improve service performance, maintainability, effectiveness, and return on investment.\n\nAct as a Designated Responsible Individual (DRI), develop and follow operational playbooks, and participate in the on-call rotation to monitor service health.\n\nProactively learn and apply technical solutions and patterns that improve availability, reliability, efficiency, observability, security, performance, and operational consistency at scale.\n\nMentor engineers through design reviews, code reviews, and technical coaching, and contribute to improving the team's engineering foundation.\n\nQualifications\nRequired Qualifications:\nBachelor's Degree in Computer Science or related technical field, or equivalent experience.\nExperience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python.\nOther Requirements:\nAbility 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:\nMicrosoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.\nPreferred Qualifications:\nProfessional experience developing and operating production software.\nExperience developing and operating large-scale, highly available distributed services, preferably on Kubernetes.\nExperience with multi-region cloud systems, NoSQL data stores, caching, asynchronous messaging, CI/CD pipelines, and observability tools.\nExperience defining and using service-level objectives, operational readiness criteria, telemetry, incident-response processes, and cross-team delivery practices.\nExperience with and interest in cryptography.\nSoftware 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.\nFind additional benefits and pay information here:\nhttps://careers.microsoft.com/v2/global/en/corporate-pay/czech-republic-corporate-pay.html\nThis position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.\nMicrosoft 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. 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