Staff Software Engineer, SRE

About Poshmark

Poshmark is a leading fashion resale marketplace powered by a vibrant, highly engaged community of buyers and sellers and real-time social experiences. Designed to make online selling fun, more social and easier than ever, Poshmark empowers its sellers to turn their closet into a thriving business and share their style with the world. Since its founding in 2011, Poshmark has grown its community to over 130 million users and generated over $10 billion in GMV, helping sellers realize billions in earnings, delighting buyers with deals and one-of-a-kind items, and building a more sustainable future for fashion. For more information, please visit www.poshmark.com, and for company news, visit newsroom.poshmark.com.

We are seeking a highly skilled and collaborative Staff Software Engineer to join our Tools & Infra DevOps (SRE) team. In this role, you will help shape and drive the platform that powers developer velocity, CI/CD workflows, and non-production infrastructure reliability at scale. You will lead key initiatives improving automation, observability, and deployment efficiency — helping engineering teams deliver high-quality software with confidence.

This is a high-impact role where you will influence architecture, mentor engineering teams, and define technical standards that elevate our operational excellence across Poshmark.

Responsibilities:

• Lead design and development of scalable CI/CD systems enabling efficient and reliable delivery for multiple engineering teams

• Architect, automate, and optimize non-production infrastructure to improve developer productivity, reliability, and environment consistency

• Implement enhanced observability and monitoring solutions to reduce MTTR and proactively improve system health

• Drive DevEx improvements including remote dev environments, build optimizations, and automation workflows

• Champion infrastructure-as-code standards (Terraform, Ansible, etc.) for repeatable and secure deployments

• Collaborate with cross-functional stakeholders (Security, QA, Data Engineering, Platform teams) to align reliability and operational goals

• Lead key explorations of emerging tools and technologies to evolve the platform (e.g., GitHub Actions, ArgoCD, service mesh, logging

• modernization)

• Mentor engineers on DevOps best practices, fostering strong engineering culture, quality, and ownership

• Serve as an escalation point during production-like issues in non-prod environments to ensure rapid resolution

• Influence roadmap prioritization with data-driven decision making

6-Month Accomplishments:

• Deliver meaningful improvements in CI stability and runtime performance

• Increase developer feedback velocity by reducing pipeline execution times

• Strengthen observability capabilities across non-production environments

• Provide architecture guidance and secure automation for key platform enhancements

12+ Month Accomplishments:

• Mature the developer experience platform with measurable improvements in engineering throughput

• Lead modernization of CI/CD tech stack with self-service capabilities

• Drive multi-environment reliability initiatives leading to reduced incidents

• Establish best practices and reusable frameworks adopted across teams

Requirements:

• 5–8+ years of experience in DevOps, SRE, or Infrastructure Engineering roles

• 7+ years engineering experience with majority focused on DevOps, SRE, or Platform Engineering

• Strong Kubernetes expertise (workload orchestration and cluster-level debugging)

• Proven experience architecting CI/CD systems at scale (Jenkins/GitHub Actions/Spinnaker)

• Hands-on experience with automation tools: Terraform, Helm, Ansible, etc.

• Solid understanding of distributed systems, monitoring, and operational excellence

• Proficient in Python, Bash, Golang, or Ruby for automation

• Strong leadership communication skills with ability to mentor and influence

• Track record of driving impactful technical initiatives end-to-end