Site Reliability Engineer

Join Esker as a Site Reliability Engineer

Esker is a global leader in AI-powered business solutions for the Office of the CFO. Our Source-to-Pay and Order-to-Cash platform serves 3,000+ customers - including NVIDIA, Whirlpool, Sony, and Trek - supporting 1.2M users and generating $200M+ in annual revenue. Founded in 1985, we've grown to 1,200+ employees worldwide with a culture focused on improving working capital, human relationships, and environmental sustainability.

Esker operates in five continents with global headquarters in Lyon, France, and two U.S. locations in Madison, WI, and Denver, CO.

We’re seeking a Site Reliability Engineer to join our US-based SRE team of 10 engineers, part of a global SRE organization of 35+ professionals responsible for the reliability, scalability, and performance of our multi-tenant SaaS platform. In this role, you’ll work hands‑on with large-scale production systems, collaborating with experienced engineers while helping drive automation, observability, and reliability improvements across the platform.

This is an exciting opportunity for someone moving from systems administration or Dev Ops into SRE, or for an early‑career SRE looking to deepen their expertise across a broad and modern technology stack—all while supporting a platform used by millions of users worldwide.

• Improve platform reliability and availability by participating in our on‑call rotation, learning from real production incidents, and helping evolve our incident response and post‑incident practices
• Increase delivery speed and consistency through infrastructure and deployment automation using Terraform, Ansible, and Azure Dev Ops
• Reduce time to detect and resolve issues by building actionable monitoring, alerting, and dashboards that improve visibility into system health and performance
• Enable scalable growth by designing and operating infrastructure that supports a rapidly expanding global customer base across Azure and on‑premises environments
• Empower engineering and support teams by delivering self‑service tools, automation, and guardrails that allow safe and efficient production operations
• Strengthen a culture of reliability and continuous improvement through agile collaboration, knowledge sharing, blameless postmortems, and cross‑team initiatives

You’ll work in a hybrid cloud environment with infrastructure spanning Azure and on‑premises data centers. Our stack includes Kubernetes, PostgreSQL, Elasticsearch/Open Search, Kafka, Redis, and modern observability tools (Prometheus, Grafana, Open Telemetry). Automation is central to how we work:
Terraform and Ansible for infrastructure, Azure Dev Ops for CI/CD.

• 3+ years in a Site Reliability, Dev Ops or a related role supporting production systems
• 2+ years of hands‑on experience operating and maintaining Linux systems in live production environments (Windows server experience is a plus)
• Bachelor's degree in Computer Science or related field preferred (equivalent experience considered)
• Practical experience with Infrastructure as Code tools such as Terraform, Ansible, Chef, Puppet, or similar
• A solid foundation in networking concepts, including TCP/IP, DNS, firewalls, and proxying
• Experience working with relational and/or No
  
  SQL databases in production environments
• Scripting proficiency in one or more languages such as Python, Bash, or Power Shell

This is a hybrid role requiring at least two days onsite in Middleton, WI per week. The team primarily works standard business hours (Monday–Friday), with flexibility to support collaboration and focused work.

The role includes participation in a rotating, well‑balanced on‑call schedule designed to be sustainable and predictable.…