ActiveCampaign · 15 hours ago
Senior Detection Engineer
Chicago, IL
Full-time
Hybrid
Senior Level
$126K/yr - $154K/yr
5+ years expActiveCampaign is the autonomous marketing platform for people at the heart of the action. The Senior Detection Engineer will lead the development of scalable detection systems and automation, shaping the organization's security posture and incident response capabilities.
AppsEmail MarketingMarketing AutomationSoftware
Responsibilities
Design and deploy sophisticated detection logic across our entire technology stack using detection-as-code principles like YARA-L, Sigma, and KQL
Build automated response workflows that independently enrich, triage, and remediate security alerts, effectively eliminating manual toil through advanced SOAR principles
Investigate complex security signals—such as novel attack patterns or phishing campaigns—that require deep human judgment and strategic intuition
Collaborate cross-functionally with DevOps and Security Engineering teams to adapt detection logic to infrastructure changes before security blind spots can emerge
Leverage AI and LLMs as force multipliers to accelerate threat hunting, generate new detection hypotheses, and automate repetitive investigative tasks
Lead post-incident reviews with engineering partners, transforming security findings into preventative architectural changes that harden our long-term defense
Prototype and test emerging detection capabilities and data sources, ensuring we stay ahead of the threat landscape while participating in an on-call rotation to defend our most critical systems
Qualification
Required
5+ years of hands-on experience in detection engineering, incident response, or security operations within high-growth technology environments
Advanced programming proficiency in Python, with a proven ability to build production-quality security automations and custom integrations from scratch
Deep expertise in Cloud Security (AWS), including a comprehensive understanding of IAM, VPC, CloudTrail, and Lambda attack vectors
Mastery of detection logic in at least two major languages, such as YARA-L, Sigma, KQL, or SPL
A track record of building SOAR workflows or equivalent automation platforms that measurably reduce operational overhead at scale
Exceptional communication skills, with the ability to distill complex security risks into actionable insights and influence technical decisions across the organization
Experience using AI/LLMs as a strategic tool for threat analysis, investigation automation, and increasing the velocity of security work
A self-directed, engineering-first mindset, ideally with a background in SRE, DevOps, or platform engineering and a history of contributing to open-source security projects
Benefits
Comprehensive Health & Wellness: Top-tier benefits package that includes a fully-covered High Deductible Health Plan (HDHP), complimentary access to telehealth services, and a free subscription to Calm.
Growth & Development: Access to LinkedIn Learning, professional development programs, and career growth opportunities in a fast-growing organization.
Generous Paid Time Off: Recharge and take the time you need to maintain work-life balance with open PTO.
Total Rewards: Generous 401(k) matching with immediate vesting, quarterly perks with commuter and lunch benefits for hub based employees or a stipend for remote workers, and a four-week paid sabbatical with bonus after five years.
Collaborative Culture: Work alongside brilliant, passionate colleagues in an environment that values innovation, teamwork, and mutual support.
Company
ActiveCampaign
ActiveCampaign specializes in email marketing, transactional email, marketing automation, and sales automation.
1001-5000 employees
H1B Sponsorship
ActiveCampaign has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (10)
2023 (8)
2022 (22)
2021 (11)
2020 (4)
Funding
Current Stage
Late StageTotal Funding
$360MKey Investors
Tiger Global ManagementSusquehanna Growth EquitySilversmith Capital Partners
2021-04-21Series C· $240M
2020-01-28Series B· $100M
2016-10-11Series A· $20M
Leadership Team
Jason VandeBoom
Founder & CEO
Joy Whinery
Chief Financial Officer
Recent News
2026-02-05
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2026-02-03
Company data provided by crunchbase