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Senior Software Engineer - Action Platform

Datadog - Paris, Île-de-France, France - Hybrid - posted 2026-08-03

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Datadog is seeking a Senior Software Engineer to lead the Private Action Runner (PAR) team within the Action Platform group. PAR is a core execution layer that enables Datadog products and AI agents to securely run actions inside customer infrastructure with controls for authentication, permissions, auditing, and safe execution. This is a hands-on technical leadership role with immediate responsibility for a team of 3 engineers, with a clear path to transition into a formal Engineering Manager 1 position as the team grows. You will own architecture, implementation, reliability, and cross-team collaboration as PAR is integrated across Datadog's product suite. Key responsibilities include: - Solving scaling bottlenecks in critical services - Deploying new features to production with progressive rollouts using feature flags - Investigating and resolving production issues in services owned by your team - Designing scalable architecture for increased traffic - Planning and prioritizing the team's most important projects - Mentoring and leading a small team of engineers You bring significant experience in one or more programming languages, with a strong focus on code simplicity and performance. You can design architecture to solve problems at high scale and have a BS/MS/PhD in a scientific field or equivalent professional experience. You're excited about leveraging AI tools to enhance coding and problem-solving, with demonstrated ability to use AI coding tools in day-to-day workflows. You have experience designing AI backend systems with awareness of quality, cost, and latency tradeoffs. Bonus qualifications include previous experience mentoring or leading small teams as a tech lead, and motivation to push the boundaries of how AI can improve software engineering practices. Datadog operates as a hybrid workplace, valuing office culture for collaboration and creativity while enabling work-life harmony. The company offers competitive benefits including stock equity (RSUs), professional development, mentorship programs, inclusive culture with employee resource groups, mental health benefits, and competitive global benefits.

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