---
title: 'Senior Application Security Engineer at Datadog'
canonical: 'https://feeny.ai/job/senior-application-security-engineer-datadog-paris-wcnscq0aqztz'
type: 'job'
last_seen: '2026-09-26'
---

# Senior Application Security Engineer at Datadog

- **Company:** Datadog
- **Location:** Paris, France
- **Posted:** 2026-09-25
- **Last confirmed live:** 2026-09-26
- **Apply:** https://careers.datadoghq.com/detail/8230663/?gh_jid=8230663

## Job description

As a Senior Security Engineer within Application Security at Datadog, you will help secure emerging application architectures where established security patterns may not yet exist, including agentic applications, LLM-enabled products, protocol-driven tool use, and untrusted execution environments. You will establish and validate security models, requirements, and controls while partnering with product and platform teams to develop secure-by-default approaches. Your work will address evolving trust boundaries, agent identity, data access, tool permissions, and runtime behavior through threat modeling, security solutions, and practical implementation. You will have the opportunity to shape how Datadog safely supports new application paradigms and address emerging security risks before they become systemic.

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 You’ll Do:

- Define security models, requirements, and guardrails for emerging application architectures where established patterns are incomplete or do not yet exist.
- Design, implement, and validate practical security controls that reduce risk in emerging architectures and high-risk system behaviors.
- Shape how emerging systems authenticate, authorize actions, isolate workloads, and access data, applying least-privilege principles throughout.
- Partner with product, platform, Infrastructure Security, and other engineering teams to identify security gaps and embed secure-by-default requirements from early design through production.
- Lead threat modeling and security assessments for new and existing products, focusing on evolving threats, unfamiliar trust boundaries, and new interaction patterns.
- Prioritize and drive remediation of emerging security risks, including continuous security testing where it provides durable coverage, and refine security approaches as architectures and threats evolve.

Who You Are:

- You have 5+ years of experience in software engineering or development in a collaborative environment, with Go, Rust, or Python experience preferred.
- You have experience in security and/or infrastructure/platform engineering, with exposure to distributed systems, application platforms, or agent-based architectures.
- You have designed or implemented security controls within application infrastructure, such as authentication, authorization, API security, zero-trust networking, workload protection, sandboxing, or runtime hardening.
- You understand common application security vulnerabilities and mitigation techniques, including those relevant to LLM applications and agentic systems; familiarity with LLM frameworks and protocols such as MCP or A2A is a plus.
- You bring strong problem-solving skills and can work independently and collaboratively in ambiguous or rapidly evolving problem spaces.
- You have successfully driven security initiatives with engineering and leadership stakeholders and are committed to staying current with security practices, emerging technologies, and evolving threats.

Datadog values people from all walks of life. We know not everyone will meet all the above qualifications on day one. That’s okay. If you’re passionate about technology and want to grow your experience, we encourage you to apply.

Benefits and Growth:

- New hire stock equity (RSUs) and employee stock purchase plan (ESPP)
- Continuous professional development, product training, and career pathing
- Intradepartmental mentor and buddy program for in-house networking
- An inclusive company culture, ability to join our Community Guilds (Datadog employee resource groups)
- Access to Inclusion Talks, our internal panel discussions
- Free, global mental health benefits for employees and dependents age 6+
- Competitive global benefits

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

#LI-Hybrid

About Datadog:

Datadog is the leading observability and security platform for the AI era, providing businesses with unified visibility across the technology stack to manage complexity at scale. It brings applications, infrastructure, data, models, and security into one place, using AI to detect and resolve issues before they impact customers. Trusted globally by Fortune 500 companies and high-growth AI leaders, Datadog enables businesses to move faster with clarity and confidence. Learn more about #DatadogLife on [Instagram](https://www.instagram.com/datadoghq/?hl=en), [LinkedIn,](https://www.linkedin.com/company/datadog) and [Datadog Learning Center.](https://learn.datadoghq.com/)

Equal Opportunity at Datadog:

Datadog is proud to offer [equal employment opportunity](https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf) to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and other characteristics protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. Here are our [Candidate Legal Notices](https://www.datadoghq.com/legal/candidate-legal-notices/) for your reference.

Datadog endeavors to make our Careers Page accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please complete [this form](https://docs.google.com/forms/d/e/1FAIpQLSeoJeduEZ2NdZF_65uZmWUrCM-zee7yADXX1s6Xr9zAGq8iKA/viewform). This form is for accommodation requests only and cannot be used to inquire about the status of applications.

Privacy and AI Guidelines:

Any information you submit to Datadog as part of your application will be processed in accordance with Datadog’s [Applicant and Candidate Privacy Notice](https://www.datadoghq.com/legal/applicant-candidate-privacy/). For information on our AI policy, please visit [Interviewing at Datadog AI Guidelines](https://www.datadoghq.com/legal/interviewing-at-datadog-ai-guidelines/).

## About Datadog

## Company Overview
- **One-liner**: Datadog provides a unified cloud monitoring and security platform for developers, IT operations, and business teams to gain end-to-end visibility across their entire technology stack.
- **Entity Type**: Public (NASDAQ: DDOG)
- **Headquarters**: New York, NY, United States
- **Founded**: 2010
- **Founders**: Olivier Pomel and Alexis Lê-Quôc

## Core Business
- **Primary industries**: Cloud monitoring, observability, application security, IT operations, DevOps
- **Target customers**: B2B – from SMBs to large enterprises, serving developers, IT operations, security teams, and business users
- **Mission/purpose**: “We are building the modern monitoring and security platform for developers, IT operations teams and business users in the cloud age.” [datadoghq.com](https://www.datadoghq.com/)

## Products & Services
- **Infrastructure Monitoring**: Metrics collection and visualization for servers, containers, cloud services, and hybrid environments.
- **APM (Application Performance Monitoring)**: Trace and optimize application performance end-to-end.
- **Log Management**: Centralized log ingestion, analysis, and exploration with sensitive data scanning and audit trail.
- **Security**: Unified security and observability – including Cloud SIEM, Application Security Management, and runtime detection to defend against AI-powered attacks. [datadoghq.com](https://www.datadoghq.com/product/security/)
- **Digital Experience Monitoring (DEM)**: Synthetic monitoring (browser & API tests) and Real User Monitoring (RUM) for frontend performance.
- **Bits AI**: AI agents that chat, investigate, and remediate issues; includes Watchdog for proactive anomaly detection.
- **Network Monitoring**: Analyze network traffic patterns across cloud environments.
- **Service Management** and **Software Delivery**: Incident response, workflow automation, CI Visibility, DORA Metrics, and OpenTelemetry support.
- **Database Monitoring** and **Data Streams Monitoring**: Deep visibility into databases and streaming pipelines.

## Market Standing
- **Valuation/Market Cap**: ~$39.9 billion (as of mid-2026) [linkedin.com](https://www.linkedin.com/company/datadog)
- **Key Metric**: FY2025 annual revenue of $3.43 billion [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)
- **Notable Investors/Partners**: Index Ventures (led Series C), with total funding of ~$1.67 billion including IPO proceeds. [linkedin.com](https://www.linkedin.com/company/datadog)
- **Growth Signals**:
  - Recognized as a Leader in the **Gartner Magic Quadrant for Observability Platforms** and for **Digital Experience Monitoring**; also named a Leader in **The Forrester Wave: AIOps Platforms, Q2 2025**. [datadoghq.com](https://www.datadoghq.com/)
  - Headcount grew to approximately **10,100 employees** by April 2026 (up from ~8,100+ reported earlier). [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)
  - Maintains a strong Glassdoor rating of **4.2/5.0**, with ~80% of employees recommending to a friend. [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)

## Competitive Advantages
- **Unified platform**: Combines infrastructure monitoring, APM, log management, and security in a single solution – reducing tool sprawl.
- **AI-native capabilities**: Bits AI agents and Watchdog provide automated root-cause analysis, remediation, and proactive insights.
- **Industry recognition**: Consistently placed as a Leader in multiple analyst quadrants (Gartner, Forrester), validating product quality and market presence.
- **Scale and ecosystem**: 700+ integrations, a rich marketplace, and broad support for OpenTelemetry and other open standards.

## Strategic Focus
- **AI and automation**: Deep investment in AI-driven features (Bits AI, Watchdog, automated remediation) to reduce toil and improve mean-time-to-resolution.
- **Security observability**: Extending the platform to unify security and observability – a key differentiator as threats become more complex.
- **Global expansion**: Growing employee presence across the Americas, EMEA, and Asia Pacific (53 countries) to serve a widening customer base. [careers.datadoghq.com](https://careers.datadoghq.com/)

## Why Work Here
- **Culture**: Transparent, inclusive, and engineering-driven. Diversity and inclusion are core values, with active Employee Resource Groups. [careers.datadoghq.com](https://careers.datadoghq.com/)
- **Flexibility**: Operates a flexible work environment supporting remote, hybrid, and office cultures – “Innovation happens everywhere”. [careers.datadoghq.com](https://careers.datadoghq.com/)
- **Benefits**: Generous benefits tailored by region, covering physical, mental, and financial wellness. [careers.datadoghq.com](https://careers.datadoghq.com/)
- **Growth**: 454 open positions globally (as of mid-2026) across engineering, sales, product, marketing, and technical solutions – with opportunities to work on cutting-edge observability and AI challenges. [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)
- **Ratings**: CEO Olivier Pomel enjoys ~87% approval; overall Glassdoor rating is 4.2/5.0 (Work-Life 3.8, Compensation 3.9, Culture 4.0). [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)

## Sources
1. [datadoghq.com](https://www.datadoghq.com/)
2. [careers.datadoghq.com](https://careers.datadoghq.com/)
3. [jobsbyculture.com](https://jobsbyculture.com/blog/working-at-datadog-2026)
4. [linkedin.com](https://www.linkedin.com/company/datadog)

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