# Principal Site Reliability Engineer at commercetools
> Posted: 2026-09-04 | Status: Active | Source: StoreJobs.dev

## Role Metadata
- **Employment Type:** Full-Time
- **Workplace:** Hybrid — Berlin, London, Valencia
- **Experience Level:** Manager / Director
- **Primary Platform:** #commercetools
- **Salary Range:** Undisclosed
- **Required Stack:** commercetools, Observability, Structured Logging, SLI/SLO, Agent Orchestration, Agile, Python, TypeScript, Node.js, React, SQL, LLMs, AI, Agent orchestration, MCP, Prompt engineering, Retrieval, Embeddings, Async, Streaming, Generative UI, Fine-tuning, Distillation, A2UI, AG-UI, MCP-UI, retrieval, embeddings, async, streaming, observability

## Job Description
Your Impact
As the Principal Engineer championing Resiliency, you'll be the driving force behind how commercetools prepares for, responds to, and learns from operational incidents at scale. Our customers rely on us for mission-critical commerce infrastructure, including during their highest-stakes moments of the year, like Black Friday. You'll own the discipline of resiliency end-to-end: mature incident management, strong operational visibility, data-driven process improvement, and organization-wide readiness for peak-traffic events.

Standardize Incident Management: Build and champion intuitive, end-to-end processes for incident detection, response, communication, and postmortems across the company.
Enhance System Visibility: Develop clear, real-time metrics, dashboards, and signals to track system health and incident trends.
Drive Data-Backed Improvements: Use operational data to find process gaps, partnering with product engineering teams to fix them.
Own Peak-Event Readiness: Scale and lead the organization-wide readiness program for massive traffic spikes like Black Friday.
Lead Cross-Team Initiatives: Identify resilience gaps, collaborate with infrastructure/product teams on solutions, and turn ideas into concrete technical outcomes.
Cross-Functional Collaboration: Partner closely with engineering leadership, Staff Engineers, and domain-specific Principal Engineers (Cloud, Security, API, Architecture, Performance).
Foster Knowledge Sharing: Drive organizational communication, documentation, and training around resiliency and operational excellence.

What Sets You Apart
You're a creative problem-solver who is wired to find solutions. You confidently dive into complex challenges and have a talent for making them simple for others. Your curiosity drives you to constantly grow and contribute to an environment of trust and teamwork. Great ideas come from many paths, and your unique perspective matters more than checking every box. What matters most is the mindset you bring to the work.
You bring:

Experience: 7+ years driving incident management/operational excellence; 5+ years leading org-wide resiliency and reliability initiatives.
Peak Load Execution: Proven track record of managing and scaling systems for high-stakes, multi-team operational events (e.g., Black Friday, major launches).
Data Literacy: Strong ability to analyze metrics to diagnose technical issues and measure process improvements.
Leadership & Influence: Ability to evaluate both technical bugs and the organizational/human dynamics behind them.
Project Management: Demonstrated success managing large-scale initiatives that span multiple engineering teams in an Agile environment.
Communication: Fluent English with exceptional written and verbal communication skills; experience running technical training or onboarding is a plus.
Soft Skills: High self-awareness, a strong customer focus, and a passion for mentoring others and learning new technologies.

## How to Apply
To view the original listing, see applicant requirements, or apply directly, visit:
https://storejobs.dev/jobs/ct-1829-principal-site-reliability-engineer?utm_source=ai_assistant