Senior Systems Engineer, Scalable Email Delivery Platform

Intuit; Chicago (IL); On-site; USD 140,000 - 190,000; Full time

Job summary

Intuit is seeking a Senior Systems Engineer to own the health of Mailchimp's sending infrastructure. You will design, build, and operate AWS cloud infrastructure and the MTA fleet, with a focus on reliability, scalability, and automation across Linux hosts, MTA software, and deployment pipelines.

You will collaborate with engineers across time zones, participate in on-call rotations, and apply AI-native approaches to improve operations while maintaining high-quality delivery.

Qualifications

• BS/MS in Computer Science or a related field, or equivalent experience
• 7+ years of engineering experience, with a strong focus on systems, infrastructure, or platform engineering for large-scale distributed or high-throughput services
• Strong Linux administration and Unix command-line skills, including operating and troubleshooting production server fleets
• Hands-on experience running production workloads on AWS: compute and instance management, machine images (AMIs), autoscaling, networking, load balancing, and cost-aware operation
• Experience with Infrastructure-as-Code and configuration management (for example, Terraform, Ansible, or Puppet) for provisioning and maintaining server and network environments
• Experience with CI/CD and delivery automation, including pipelines (for example, Jenkins), artifact and package management, containers (Docker), and orchestration (Kubernetes or similar)
• Able to read and write code to build tooling and services; Python and PHP are core to this platform, and Go, C/C++, or Perl are a plus (a sample code or portfolio is welcome)
• Experience with MTA software (Postfix, PowerMTA, Momentum, or similar), or comparable experience operating a complex Linux-based server application at scale
• Working knowledge of DNS, networking, and email authentication (SPF, DKIM, DMARC)
• Experience with relational and in-memory data stores in the serving path (MySQL and Redis; PostgreSQL a plus)
• Experience building observability, including metrics, dashboards, and alerting, and comfort with data and analytics tooling (for example, BigQuery, OpenSearch, and Splunk)
• Comfortable with Git-based version control and modern development tooling
• Comfortable with AI-native ways of working and hands-on with AI and agent tooling in daily engineering work
• Able to work independently and as part of a team, break down complex technical concepts for different audiences, and communicate clearly

Responsibilities

• Design, build, and operate the AWS cloud infrastructure the platform runs on, managing the sending fleet across AWS environments, including AMI and image build pipelines, instance and capacity management, autoscaling, and running the fleet cost-effectively
• Develop and manage Infrastructure-as-Code (for example, Terraform, Ansible, or Puppet) to provision, configure, and maintain scalable, secure server and network environments
• Design and manage system architecture across the sending path, including networking, load balancing, and security configuration, to keep production applications and services healthy
• Design, implement, and maintain the CI/CD pipelines and release automation behind the platform (Jenkins, Artifactory and RPM packaging, containerized services, and Kubernetes/ArgoCD-based delivery), automating deployment workflows so releases to production are reliable, repeatable, and secure
• Configure and maintain containerized environments (Docker, Kubernetes) for application deployment, scaling, and orchestration
• Configure and tune MTA software and host-level parameters to manage throughput, queueing, and delivery behavior across the fleet
• Take part in an on-call rotation, available to handle Delivery-related operational issues outside normal business hours, to keep the platform up and the business running
• Monitor production systems and infrastructure for performance, availability, and security, and own the metrics, dashboards, and alerting that give the team and stakeholders visibility into fleet and sending health (for example, BigQuery, OpenSearch, and Splunk)
• Respond to fleet, host, and delivery incidents, diagnosing issues that span the MTA software, the hosts, the AWS environment, and the network
• Write scripts and automation tooling to streamline infrastructure provisioning, system configuration, and operational processes, and to support performance tuning across the fleet
• Take full responsibility for delivering major platform features and projects, managing technical risk, watching them after launch, and keeping stakeholders informed
• Review internal code and configuration changes for their impact on sending infrastructure and reliability
• Build and maintain tooling that tracks sending health and IP and domain reputation, and that supports the team's response to receiver and deliverability trends
• Apply working knowledge of email authentication and receiver behavior (SPF, DKIM, DMARC, feedback loops, and bounce handling) to keep the platform configured correctly and delivering well
• Partner with Senior and Staff Engineers and Product Managers to analyze infrastructure and reliability requirements, weighing scalability, security, cost, and performance as you design solutions
• Help improve deployment methods, monitoring tools, and infrastructure automation practices across the team
• Look for opportunities to automate operations and improve the platform with AI, and use AI and agent tooling to move faster while owning the quality of whatever those agents produce on your behalf
• Document systems, runbooks, and operational workflows, act as a subject-matter expert, and mentor teammates to raise the whole team's capability
• Communicate clearly and persuasively across global, cross-functional teams and time zones

Skills

Linux administration

Unix command-line

Strong communication

On-call reliability

Independent and proactive

Education

BS/MS in Computer Science

Equivalent experience

Tools

Terraform

Ansible

Puppet

Jenkins

Docker

Kubernetes

Postfix

PowerMTA

Momentum

MySQL

Redis

PostgreSQL

BigQuery

OpenSearch

Splunk

Git

Python

PHP

Go

C/C++

Perl

Job description

Intuit is seeking a Senior Systems Engineer to own the health of Mailchimp's sending infrastructure. You will design, build, and operate AWS cloud infrastructure and the MTA fleet, with a focus on reliability, scalability, and automation across Linux hosts, MTA software, and deployment pipelines.

You will collaborate with engineers across time zones, participate in on-call rotations, and apply AI-native approaches to improve operations while maintaining high-quality delivery.