Senior Software Engineer

Overview

Intelligent Conversation and Communications Cloud (IC3) powers billions of real-time customer conversations across Microsoft’s first-party and second-party solutions. IC3 provides reliable and high-quality audio/video calling, meeting, and messaging services that function seamlessly from anywhere, ensuring consistent performance across all customer touchpoints. The mission of IC3 is to enhance real-time conversations on M365 platforms, empowering best-in-class productivity tools for the modern workplace. Every call, meeting, or chat contributes to making the next one even better.

Microsoft Development Center Tallinn offers an enthusiastic and fast-paced work environment where your contributions can impact millions of users globally. The center values open-mindedness, diversity, and flexibility in work hours. Employees enjoy an attractive work environment, state-of-the-art benefits, and access to the latest hardware and software. Additional perks include subsidized food and beverages, public transport, gym, phone, and broadband. Sports and gaming groups are available to support staff well-being. The center places strong emphasis on personal and professional development within MDCE and beyond.

Microsoft is an equal opportunity employer and actively supports workforce diversity. Applications for vacant positions are welcomed and considered based on the relative merits of each applicant against the specific role profile, regardless of color, race, nationality, ethnic origin, sex, gender, sexual orientation, marital status, disability, parental responsibilities, age, religion, or belief.

As a member of the Engineering Systems team, the Software Engineer will help build products capable of supporting hundreds of millions of users. Microsoft’s first- and second-party Engineering group leverages advanced technologies to deliver communication services—including voice, video, chat, and presence—to the web, enabling radically new applications. The Software Engineer will be responsible for designing and building internal tools that enable a highly automated and robust Engineering Pipeline.

Responsibilities

• Own and drive design, implementation, and evolution of large‑scale engineering systems and services and tools that support build, test, and release pipelines at scale.
• Lead end‑to‑end feature crews or major platform initiatives, from problem framing and design through production deployment and live‑site ownership.
• Make architecture and design decisions that balance developer productivity, reliability, scalability, security, and long‑term maintainability.
• Act as a technical authority in your focus areas (e.g., CI execution, test reliability, release gating, platform observability).
• Drive cross‑team alignment by collaborating with partner product teams, infrastructure teams, and program managers to clarify ownership boundaries and platform contracts.
• Raise the engineering bar through design reviews, code reviews, operational rigor, and best‑practice guidance across the organization.
• Diagnose and resolve complex, ambiguous production issues spanning multiple services and layers of the stack.
• Mentor and grow other engineers by leading by example, sharing knowledge, and shaping team engineering culture.
  

The team follows DevOps practices and develops on both Microsoft and non-Microsoft technologies to support a wide range of development activities. This approach allows the use of cutting-edge technologies to better serve customers.

Qualifications

Required Qualifications: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 PythonOR equivalent experience.4+ years of professional software engineering experience, including ownership of production systems.Solid experience designing and building distributed systems or cloud‑based services.Proficiency in one or more general‑purpose programming languages such as C#, Python, Java, or similar.Demonstrated ability to lead technical initiatives, make sound design trade‑offs, and deliver results in ambiguous problem spaces.Experience collaborating across teams and influencing technical direction beyond immediate ownership boundaries.Preferred Qualifications:Experience with CI/CD systems, developer productivity platforms, or large‑scale test infrastructure.Familiarity with cloud platforms (Azure preferred) and operating services in production (monitoring, alerting, incident response).Strong background in debugging complex distributed systems and improving reliability and performance.Experience shaping or enforcing engineering standards, quality gates, or platform contracts.Demonstrated passion for mentorship, engineering excellence, and continuous improvement.

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.