Senior Software Engineer, ClickHouse
C#, Integrations
+ Stock options
Open-source database for real-time apps and analytics
Job no longer available
Open-source database for real-time apps and analytics
201-500 employees
Job no longer available
+ Stock options
201-500 employees
Company mission
To allow users to generate analytical reports using SQL queries in real-time.
Role
Who you are
- 5+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions in the .NET ecosystem
- Strong proficiency in C# and .NET, including advanced knowledge of memory management, performance tuning, profiling, and debugging with tools like PerfView, dotMemory, or Visual Studio Diagnostic Tools
- Deep experience with .NET data access technologies: ADO.NET, Entity Framework Core, Dapper, and other popular ORMs
- Experience with .NET Framework and .NET Core/5+ ecosystems, including cross-platform development, NuGet package management, and modern C# language features
- Expertise in asynchronous programming and concurrent patterns in C#, including Task Parallel Library (TPL), async/await patterns, and high-throughput data processing scenarios
- Strong understanding of database concepts: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
- Experience integrating with popular .NET frameworks: ASP.NET Core, Blazor, WPF, and understanding of dependency injection patterns and middleware pipelines
- Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
- Passion for open-source development: actively engaging with the OSS community, advocating for users, and influencing the evolution of the core system through your contributions
Desirable
- Prior contributions to open-source .NET projects, particularly database drivers, SDK, ORM providers, or data access libraries
- Experience building NuGet packages and maintaining public APIs with semantic versioning and backward compatibility considerations
- Familiarity with ClickHouse or similar high-performance data platforms
- Knowledge of .NET performance optimization techniques: memory pooling, zero-allocation patterns, SIMD
- Familiarity with or eagerness to learn Rust and C++ for contributing to ClickHouse's core engine optimizations and building performance-critical integration components that span multiple language ecosystems
- Understanding of TCP/IP, HTTP protocols, and network optimization techniques, particularly in the context of .NET's networking stack
What the job involves
- The Integrations team is the bridge between ClickHouse and the entire data ecosystem
- We build and maintain the connections that make ClickHouse accessible to millions of developers and data practitioners worldwide
- Our work spans from low-level database drivers to high-level data visualization plugins, ensuring that ClickHouse seamlessly integrates with the tools our users already know and love
- We're responsible for the official language clients (Python, JavaScript, Java, Go, Rust, C++), major data connectors (Kafka, dbt, Spark, Fivetran), and integrations with leading visualization platforms (Grafana, Tableau, PowerBI, Metabase)
- As a Senior Software Engineer specializing in C# integrations, you'll be the architect and maintainer of ClickHouse's .NET ecosystem
- This role sits at the intersection of high-performance database engineering and developer experience, where you'll craft tools that enable C# developers to harness ClickHouse's incredible speed and scale
- You'll own the full lifecycle of .NET-based integrations—from the core ADO.NET provider and Entity Framework Core integration that handles billions of records per second, to SDKs and ORM adapters that make ClickHouse feel native in C# applications
- This isn't just about writing code; you're building the foundation that thousands of .NET developers rely on for their most critical data workloads
- Your work will directly impact how companies process massive datasets, from real-time analytics platforms ingesting millions of events per second to AI and machine learning systems feeding training pipelines and serving feature stores at scale
- You'll collaborate closely with the open-source community, internal teams, and enterprise users to ensure our C# integrations set the standard for performance, reliability, and developer experience across the entire .NET ecosystem
Our take
Database management systems have long been important to the operations of businesses. However, these systems can be painfully slow. ClickHouse solves this problem with its ultra-fast database management system, that powers real-time analytics and apps.
ClickHouse's founding team hail from companies including Yahoo!, Netflix, Salesforce and Google. This has not only lent the company an impressive amount of credibility, but has also allowed it to identify the needs and challenges of enterprises when it comes to their databases. Its system works between 100 and 1,000 times faster than traditional options, and has led to the company being trusted by the likes of eBay, Uber and Spotify.
It has seen substantial funding too, the most recent of which is cited to help advance its platform across multiple use cases. Alongside this funding, it recently announced the acquisition of LibreChat, an open-source AI chat platform, allowing ClickHouse to launch its Agentic Data Stack. This move positions the company at the forefront of agentic analytics, allowing organizations to interact with massive datasets through AI agents, and demonstrates ClickHouses's commitment to shaping the future of real-time,. intelligent data analysis.
Freddie
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 4 rounds)
Jan 2026
$400m
LATE VC
May 2025
$350m
SERIES C
Total funding: $1.1bn
Company benefits
- Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in 20 countries
- Healthcare - Employer contributions towards your healthcare
- Equity in the company - Every new team member who joins our company receives stock options
- Time off - Flexible time off in the US, generous entitlement in other countries
- A $500 Home office setup if you’re a remote employee
- Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites
Company HQ
Old Palo Alto, Palo Alto, CA
Leadership
Aaron Katz
(Co-Founder & CEO)Prior to ClickHouse, Aaron spent 6 years at Elastic as CRO and Strategic Advisor. He also spent 12 years at salesforce, joining as a Regional VP of Sales before working through various roles to become the Senior VP of Enterprise Sales.
Yury Izrailevsky
(Co-Founder & President)Previously, Yury spent 3 years at Google as a VP of Engineering, 8 years at Netflix as a Director of Cloud and Systems Infrastructure and VP of CLoud Computing and Platform Engineering, and 8 years at Yahoo! as a Manager of Yahoo Data Warehouse and Director of Engineering.
Alexey Milovidov
(Co-Founder & CTO)Prior to becoming CTO in 2021, Alexey was the Head of CLickHouse and Yandex for over 13 years.
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