Senior Software Engineer .Net - Drivers

Snowflake is about empowering enterprises to achieve their full potential — and people too. With a culture that’s all in on impact, innovation, and collaboration, Snowflake is the sweet spot for building big, moving fast, and taking technology — and careers — to the next level.

Become a key contributor to our experienced engineering team building Snowflake’s in‑house .NET Driver and client SDKs. You’ll shape developer experience for thousands of engineers by delivering reliable, high‑performance connectivity, first‑class APIs, and seamless integrations across the .NET ecosystem.

If you’re a fast‑learning, product‑minded engineer with a passion for developer tools and public APIs, this role puts you at the center of Snowflake’s developer platform.

AS A SENIOR SOFTWARE ENGINEER AT SNOWFLAKE, YOU WILL:

- Design, build, and own core components of the Snowflake .NET Driver (ADO.NET http://ADO.NET provider) and related client SDKs, with a focus on API quality, performance, reliability, and security.

- Lead projects end‑to‑end: requirements, technical design, implementation, testing, documentation, releases, and long‑term maintenance.

- Establish and uphold public API standards for .NET (naming, async patterns, exceptions, versioning, and binary/source compatibility).

- Drive performance and resilience improvements using profiling, benchmarking (e.g., BenchmarkDotNet), async I/O, efficient memory management, and robust error handling and retries.

- Enhance diagnostics and observability: structured logging, correlation IDs, metrics, tracing, and actionable error messages for customers.

- Build secure-by-default connectivity (TLS, cert validation, modern cipher suites) and integrate with enterprise auth (OAuth 2.0/OIDC, SSO).

- Ensure cross‑platform support for Windows, Linux, and macOS; automate CI/CD, signing, and packaging to ship high‑quality releases.

- Collaborate closely with Product, Support, Docs, and other Driver teams to prioritize roadmap, triage production issues, and deliver fixes with speed and quality.

- Contribute to and engage with open‑source workflows where applicable (issues, PR reviews, repo hygiene, release notes).

- Mentor engineers through design reviews, code reviews, and technical guidance; elevate the engineering bar across the team.

- Participate in on‑call activities and lead incident response/RCAs for driver‑related issues.

OUR IDEAL SENIOR SOFTWARE ENGINEER WILL HAVE:

- 6+ years of industry experience designing, building, and supporting production‑grade .NET libraries or developer tooling.

- Deep expertise in C# and .NET (Core/5+/8+), including async/await, threading, concurrency, and diagnostics.

- Proven track record building public client libraries (API design, semantic versioning, compatibility, deprecation strategies).

- Strong networking and protocols foundation (HTTP, TLS, connection pooling, timeouts, backoff, proxy/enterprise environments).

- Experience with database connectivity and SQL (ADO.NET http://ADO.NET, drivers/providers, SQL fundamentals; ODBC interop a plus).

- Demonstrated performance engineering skills: profiling (e.g., dotTrace, PerfView), memory and allocation analysis, throughput/latency tuning.

- Excellence in automated testing: unit, integration, contract, and compatibility tests; CI pipelines; release engineering; NuGet ecosystem.

- Outstanding debugging and troubleshooting skills in cloud environments and at customer scale.

- Clear written and verbal communication; ability to collaborate with cross‑functional partners and represent the driver area with customers.

- Bachelor’s degree or foreign equivalent in Computer Science, Software Engineering, or related field (or equivalent experience).

- Eligibility to work in a hybrid model at our Warsaw location.

BONUS POINTS FOR EXPERIENCE WITH THE FOLLOWING:

- Designing and maintaining ADO.NET http://ADO.NET providers or other database drivers; familiarity with ORM integrations (e.g., EF Core usage patterns).

- Security and identity: OAuth 2.0/OIDC, enterprise SSO, credential flows, token management, and secure secret handling.

- Observability at scale: OpenTelemetry, tracing/metrics standards, and customer‑facing diagnostics.

- Native interop (P/Invoke), cryptography, or Windows‑specific features (e.g., certificate stores), and cross‑platform packaging.

- Operating at scale with public, open‑source client libraries; triage, governance, and community engagement.

- Familiarity with major cloud providers (AWS, Azure, GCP) and enterprise networking constraints.

- Contributions to other Snowflake driver ecosystems (e.g., Python, JDBC, ODBC, Go, Node.js) or cross‑driver initiatives.

Snowflake is growing fast, and we’re scaling our team to help enable and accelerate our growth. We are looking for people who share our values, challenge ordinary thinking, and push the pace of innovation while building a future for themselves and Snowflake.

How do you want to make your impact?

For jobs located in the United States, please visit the job posting on the Snowflake Careers Site for salary and benefits information: careers.snowflake.com http://careers.snowflake.com