Software Development Engineer III - Infrastructure

About Ironwood Digital : Ironwood Digital is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. Today, Ironwood Digital supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes. To date, businesses operating on Ironwood Digital have generated over $7 billion in ecosystem value, demonstrating the impact of shared infrastructure at scale. By centralizing conversations, automation and intelligence into one system, we help businesses move faster, reduce complexity and execute efficiently. Behind the platform, Ironwood Digital powers more than 4 billion API hits and 2.5 billion message events daily. With 250 terabytes of distributed data, 250+ microservices and over 1 million domain names supported, our architecture is built for performance, resilience and long-term scalability. Our People With over 2,000 team members across 10+ countries, Ironwood Digital operates as a global, remote-first organization built for speed and ownership. We value initiative, clarity and execution, creating space for ambitious people to build systems that support millions of businesses worldwide. Here, innovation thrives, ideas are celebrated and people come first, no matter where they call home. Our Impact Every month, Ironwood Digital enables more than 1.5 billion messages, 200 million leads and 20 million conversations for the more than 1 million businesses we support. Behind those numbers are real people building independence, expanding opportunity and creating measurable impact. We’re proud to be a part of that. Learn more about us on our YouTube Channel or Blog Posts About the Role: We are seeking SDE3 engineers to join Ironwood Digital ’s Core Infrastructure SRE Operations & Security team. This role focuses on operating, securing, and improving Ironwood Digital ’s production infrastructure, with responsibilities spanning on-call operations, incident response, reliability engineering, and security remediation. You will work closely with Cloud Infrastructure, Platform Engineering, Data Infrastructure, and Security teams to ensure systems are stable, resilient, and secure. This is a hands-on role with a strong operational and security mindset, critical to Ironwood Digital ’s platform maturity. Responsibilities: Production Operations & Reliability:-> Participate in 24/7 on-call rotations for core infrastructure systems -> Execute incident response during production events, including triage, mitigation, and recovery -> Maintain and improve runbooks, operational procedures, and escalation paths -> Help reduce MTTR and prevent repeat incidents through engineering solutions Infrastructure Reliability Engineering:-> Improve reliability of core infrastructure components including: Kubernetes (GKE) clusters, Cloud networking and load balancing & Edge services (Cloudflare) -> Identify systemic reliability issues and drive corrective actions -> Support capacity planning, scaling, and resilience testing Security Operations & Remediation:-> Execute security remediations across cloud and Kubernetes environments -> Support enforcement of: IAM least-privilege access, Network security controls & Runtime security policies -> Partner with Platform Security on vulnerability management and remediation -> Support security incident response and post-incident reviews Automation & Tooling:-> Automate repetitive operational and security tasks -> Build tooling to improve:Incident response speed, Operational visibility & Security posture enforcement -> Reduce manual toil through scripts, tooling, and process improvements Change Management & Governance:-> Support safe execution of infrastructure and configuration changes -> Ensure changes follow defined change management and audit requirements -> Contribute to incident reviews, postmortems, and continuous improvement initiatives Collaboration & Growth:-> Work closely with Cloud Infrastructure, SRE, Platform, Data, and Security teams -> Contribute to shared documentation and operational standards -> Mentor junior engineers and lead small reliability or security initiatives Requirements: 4+ years of experience operating large-scale systems Experience with GCP or other public cloud platforms Experience with Kubernetes (GKE) in production Ability to identify systemic issues and propose long-term fixes Experience leading incident response or reliability initiatives Strong understanding of reliability, security, and operational best practices Comfortable working in on-call and incident response environments Strong troubleshooting and communication skills Experience supporting or operating production systems Comfortable mentoring junior engineers and influencing peers Nice to have: Familiarity with Cloudflare, networking, or edge security Exposure to security tooling or vulnerability management Scripting or automation experience (Python, Go, Bash, etc.) Experience in compliance- or audit-driven environments (SOC2, ISO) EEO Statement: The company is an Equal