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ActiveCampaign Logo ActiveCampaign · IT - Software Development

Senior Frontend Software Engineer

United States, Chicago 147600.00 - 180400.00 USD / Year · Job Posted April 12, 2026
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Job Description

ActiveCampaign is the autonomous marketing platform for people at the heart of the action. It empowers teams to automate their campaigns with AI agents that imagine, activate, and validate–freeing them from step-by-step workflows and unlocking limitless ways to orchestrate their marketing.

Job Responsibility

  • Create and evolve new UI based on intricate designs and prototypes, ensuring technical feasibility and aesthetic precision
  • Develop and maintain Design System components to ensure a consistent, scalable, and high-quality user interface across the entire platform
  • Evaluate and optimize performance, meticulously analyzing browser rendering and API data loading to ensure peak efficiency
  • Collaborate cross-functionally with Product, Security, DevOps, DataOps, and SRE teams to drive integrated and influential technical solutions
  • Advocate for excellence by upholding rigorous coding standards, participating in deep code reviews, and mentoring others on best practices
  • Drive operational health by monitoring alerts and escalations to ensure all customer requirements are met with precision
  • Participate in an on-call rotation, ensuring the continuous reliability and stability of our mission-critical applications

Requirements

  • 6+ years of hands-on experience with JavaScript, both in the browser and within CLI (Node.js) environments
  • Deep understanding of JavaScript and TypeScript fundamentals (closures, event loop, type narrowing, generics, etc.)
  • Strong, proven skills with React, specifically in high-growth environments with rapidly evolving needs
  • Expertise in micro-frontend architectures, including hands-on experience with Module Federation and modern build systems like Nx, Rspack, or Webpack
  • Command of Git and CI/CD pipelines, with a focus on streamlining deployment and ensuring high engineering standards
  • Experience with agentic coding and familiarity with monitoring tools like Grafana (including Faro)
  • A quality-driven mindset, featuring a strong focus on testing, ownership, and the ability to iterate repeatedly
  • Data literacy, including at least a basic knowledge of SQL with the ability to write queries for reading and writing data
  • Exceptional collaborative skills, with a proven ability to deliver value while navigating change in a fast-paced setting

Nice to have

  • Technical versatility, ideally previous experience with PHP or other backend languages
  • Familiarity with AWS infrastructure, specifically utilizing S3 and CloudFront for efficient build deployment, hosting, and edge caching strategies

What we offer

  • 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
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