Software Engineer (C++/C#)

About this role

Build and maintain Databento’s C# client library while contributing to high-performance C++ systems for financial market data. The role focuses on processing high-volume, low-latency market feeds and building tools for petabyte-scale data processing.

About the company

Databento delivers historical and real-time market data APIs so quant traders and fintechs can access exchange feeds with usage-based pricing.

Stack

What you'll do

• Own and maintain a robust, well-tested C# client library for external users
• Develop high-performance C++ server applications, parsers, and market-data feed handlers
• Optimize systems for high throughput and nanosecond-level latency
• Build tools and libraries for petabyte-scale data processing
• Collaborate on build, deployment, and CI/CD practices
• Implement monitoring and improve uptime
• Support smooth feature rollouts and updates

What we're looking for

• 5+ years of full-time software engineering experience
• Strong proficiency in C++ and C#
• Knowledge of systems programming, algorithms, data structures, multithreading, networked I/O, serialization, CPU architecture, kernels, and compilers
• Experience with multiprocess environments
• Comfort using lldb or gdb
• Strong communication skills for remote work

Nice to have

• Java experience
• Experience designing intuitive, developer-friendly APIs
• Familiarity with open-source release management, versioning, changelogs, issue triage, and backward compatibility
• Interest in low-level optimization, performance engineering, financial data, or algorithmic trading
• Experience at a trading firm, technology company, or high-growth startup

Benefits

• Health, dental, disability, and life insurance
• 401(k) matching for full-time employees
• 100% remote work
• Paid in local currency