Senior Software Engineer – Feature Flags (Rust)

Paris - France

Monthly Salary: Not Disclosed

Posted on: 4 hours ago

Vacancies: 1 Vacancy

Job Summary

Datadogs Feature Flags team builds tools that help customers control application behavior reduce deployment risk and power advanced experimentation. Our work spans multiple languages and platforms leveraging a shared Rust-based core and OpenFeature integrations to ensure performance and reliability at scale. We operate with the speed and innovation of a growth-stage startup bolstered by Datadogs acquisition of Eppo. As a Senior Software Engineer youll help shape the future of our experimentation platform working across systems where correctness global distribution and low-latency performance are critical.

At Datadog we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them.

What Youll Do:

Develop high-performance SDKs across a wide variety of languages and platforms many of which share a Rust-based core
Contribute to the evolution of OpenFeature and its surrounding open-source ecosystem
Design and implement systems to support advanced experimentation models such as mutual exclusion holdouts and contextual multi-armed bandits
Architect global systems for distributing feature flag configurations and ingesting evaluations reliably and at low latency
Collaborate with cross-functional teams to integrate feature flagging with Datadogs observability and AI-assisted development products

Who You Are:

Experienced backend engineer who enjoys solving ambiguous problems through iteration and pragmatism
Motivated by a fast-moving customer-facing product environment with startup-like energy
Comfortable working across multiple programming languages with a strong ability to learn new ones quickly
Proficient in Rust and eager to expand a shared Rust core that powers SDKs and edge components
Skilled at cross-team collaboration and identifying solutions that balance impact and effort

Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. Thats okay. If youre passionate about technology and want to grow your skills we encourage you to apply.

Benefits and Growth:

Generous and competitive benefits package
New hire stock equity (RSUs) and employee stock purchase plan
Continuous career development and pathing opportunities
Employee-focused best in class onboarding
Internal mentor and cross-departmental buddy program
Friendly and inclusive workplace culture

Benefits and Growth listed above may vary based on the country of your employment and the nature of your employment with Datadog.

#LI-Hybrid

Required Experience:

Senior IC

What Youll Do:

Develop high-performance SDKs across a wide variety of languages and platforms many of which share a Rust-based core
Contribute to the evolution of OpenFeature and its surrounding open-source ecosystem
Design and implement systems to support advanced experimentation models such as mutual exclusion holdouts and contextual multi-armed bandits
Architect global systems for distributing feature flag configurations and ingesting evaluations reliably and at low latency
Collaborate with cross-functional teams to integrate feature flagging with Datadogs observability and AI-assisted development products

Who You Are:

Experienced backend engineer who enjoys solving ambiguous problems through iteration and pragmatism
Motivated by a fast-moving customer-facing product environment with startup-like energy
Comfortable working across multiple programming languages with a strong ability to learn new ones quickly
Proficient in Rust and eager to expand a shared Rust core that powers SDKs and edge components
Skilled at cross-team collaboration and identifying solutions that balance impact and effort

Benefits and Growth: