Principal Software Engineer Job Opportunity at Microsoft – Bangalore, India
Job Location: Bangalore, Karnataka, India
Job Type: Full-Time
Remote Work Flexibility: Up to 50% work from home
Job Number: 1822819
Posted Date: June 11, 2025
Travel Requirement: 0–25%
Employment Role: Individual Contributor
Department: Software Engineering
Discipline: Advanced System Architecture & Real-Time Infrastructure
Unlock Your Potential at Microsoft – Be the Force Behind Next-Gen Enforcement Infrastructure
Are you an experienced software engineer looking to contribute to a globally impactful technology platform? Do you thrive at the intersection of large-scale distributed systems, artificial intelligence (AI), and real-time data processing? If so, Microsoft invites you to explore a game-changing opportunity as a Principal Software Engineer in our Bangalore office.
This is not just another software engineering role—it’s an opportunity to influence the architectural core of one of Microsoft’s most critical AI-driven platforms that ensures the security and integrity of our advertising and content ecosystems. This is where software engineering meets deep systems thinking and where AI transforms infrastructure.
Role Overview
In this highly strategic and hands-on position, you’ll be at the forefront of building a cutting-edge real-time enforcement platform. The mission? To protect Microsoft’s users, advertisers, and content ecosystems from evolving threats while ensuring compliance with policy and regulatory guidelines.
This infrastructure handles hundreds of billions of data signals daily—requiring precision, speed, and robust design. As a Principal Software Engineer, you will architect mission-critical components like real-time decision engines, data streaming pipelines, and scalable ML inference systems.
You’ll also lead innovation on agentic workflows—automated systems empowered by large language models (LLMs) capable of adaptive, multi-step reasoning and decision-making. This role is ideal for senior engineers passionate about building reliable, efficient, and AI-integrated distributed systems.
Why Microsoft?
At Microsoft, we believe in empowering every person and every organization on the planet to achieve more. We cultivate a culture of inclusion, innovation, and integrity, encouraging employees to collaborate, take bold risks, and make an impact through cutting-edge technologies.
This role aligns with our mission by creating technology that safeguards digital spaces, allowing innovation to thrive without compromise. If you have a growth mindset and are passionate about leveraging technology to solve complex global challenges, Microsoft offers the environment, resources, and leadership to bring your ideas to life.
Key Responsibilities
1. Architect Large-Scale, Low-Latency Distributed Systems
You will spearhead the architectural direction for distributed systems designed to process and evaluate ad content and user-generated signals across Microsoft’s global workloads. These systems operate in real time, requiring sub-millisecond latency and rock-solid scalability.
2. Drive Innovation Across Streaming and Scoring Pipelines
Lead technical strategy and implementation for real-time scoring engines, streaming data pipelines (e.g., Apache Kafka, Flink, or Beam), and enforcement policy engines. Ensure these systems are designed for extensibility, modularity, and long-term evolution.
3. Integrate Machine Learning at Scale
Collaborate closely with applied scientists and ML engineers to integrate high-performance, cost-effective machine learning models into production environments. Contribute to model deployment workflows, inference orchestration, and online feature stores.
4. Build Agentic Workflows Powered by LLMs
Lay the groundwork for the next generation of AI-driven enforcement mechanisms—systems that can autonomously reason, adapt, and enforce policy using state-of-the-art LLMs and reinforcement learning. Design infra layers to support these innovative capabilities.
5. Ensure Performance, Reliability & Observability
Conduct load testing, capacity planning, and performance profiling to ensure system robustness under extreme workloads. Design systems with observability, regulatory traceability, and failover mechanisms baked in from day one.
6. Mentor and Influence Engineering Culture
As a principal-level engineer, you’ll influence platform-wide standards, review designs across teams, mentor senior engineers, and promote best practices in architecture, testing, deployment, and monitoring.
Required Qualifications
To qualify for this role, candidates must bring a strong blend of technical proficiency, distributed systems expertise, and real-world experience in high-scale environments.
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Bachelor’s Degree in Computer Science or a related technical field, or equivalent experience.
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6+ years of hands-on software development experience with languages such as C, C++, C#, Java, JavaScript, or Python.
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Proven experience architecting and building backend or distributed systems at scale.
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Proficiency in C++ or C# with a strong understanding of systems-level programming.
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Deep expertise in streaming technologies such as Apache Kafka, Flink, Beam, etc.
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Expertise in performance tuning, load testing, and operational diagnostics.
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Knowledge of ML inference pipelines and deployment strategies in a live environment.
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Familiarity with designing systems that are regulation-compliant, traceable, and fault-tolerant.
Preferred Qualifications
Microsoft prefers candidates who go beyond the minimum technical bar and bring a visionary, problem-solving mindset.
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10+ years of experience in backend engineering and infrastructure design.
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Master’s Degree in Computer Science or equivalent advanced academic background.
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Strong experience building agentic or LLM-powered systems, including RAG (retrieval-augmented generation) architectures.
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Exposure to human-in-the-loop moderation, adaptive enforcement systems, or policy compliance frameworks.
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Experience in designing cloud-native ML inference platforms that support modular, scalable deployment.
Technologies You’ll Work With
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Languages: C++, C#, Python, Java
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Streaming Tools: Apache Kafka, Flink, Apache Beam
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Machine Learning Integration: ONNX, TensorFlow Serving, Kubernetes, PyTorch
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DevOps and Observability: Prometheus, Grafana, Azure Monitor, CI/CD pipelines
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Cloud: Microsoft Azure ecosystem
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Infrastructure as Code: Terraform, ARM templates
Career Impact and Learning Opportunities
This role is more than just a job—it’s an opportunity to shape the future of Microsoft’s enforcement architecture and be at the forefront of applying AI in infrastructure. You’ll:
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Influence the architecture of systems that operate at web scale, processing hundreds of billions of signals per day.
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Be a pioneer in the integration of AI and LLMs into enforcement systems.
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Solve some of the most complex challenges in modern computing related to real-time policy enforcement, privacy, trust, and regulatory compliance.
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Work with cross-disciplinary teams, including AI researchers, data scientists, and system architects.
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Grow in a leadership capacity as a technical mentor, design authority, and platform visionary.
Benefits and Perks
Working at Microsoft comes with a wide range of benefits designed to support your professional and personal growth:
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Industry-Leading Healthcare Plans
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Generous Paid Time Off & Sick Leave
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Maternity & Paternity Benefits
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Employee Stock Purchase Plan (ESPP)
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Savings and Investment Opportunities
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Tuition Reimbursement and Learning Resources
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Global Networking and Mentorship Programs
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Diversity, Equity & Inclusion Programs
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Volunteer and Giving Opportunities
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Product Discounts
Please note that benefits may vary depending on your location and employment contract.
Commitment to Diversity & Inclusion
Microsoft is proud to be an equal opportunity employer. We are committed to building a diverse team and inclusive work environment. All qualified applicants will be considered regardless of race, gender identity, age, national origin, disability, or veteran status.
If you require a reasonable accommodation due to a disability during the application process, Microsoft is committed to supporting you. Learn more about how we support candidates with accessibility needs on our careers website.
Security and Background Screening
As this role involves working with secure and sensitive systems, the selected candidate will be required to pass a Microsoft Cloud Background Check upon hiring and every two years thereafter.
Apply Now – Build the Infrastructure of Tomorrow
If you’re passionate about designing high-scale systems, integrating AI into infrastructure, and making a global impact, then this is the perfect opportunity to join Microsoft as a Principal Software Engineer. Work on meaningful challenges, collaborate with the best minds in tech, and shape the future of AI-driven enforcement platforms.
Apply today and be part of Microsoft’s journey to empower billions.