Senior Software Engineer, Platform

Why Engineering at Cozey 

At Cozey Engineering, we’re not just building software, we're building the backbone of a modern, efficient, and customer-obsessed e-commerce operation. From order to delivery, every step is powered by in-house systems that drive speed, accuracy, and seamless customer experiences. Our team owns everything from operational infrastructure and warehouse management systems to backend services that power our website and logistics. 

The mission of the Senior Software Engineer, Platform at Cozey 

As a Senior Software Engineer, Platform, reporting to a Staff Engineer, your mission is to build and scale the foundational systems that power all of Cozey’s COS (Cozey Operating System) engineering organization. You will design and maintain the core infrastructure, developer tools, and shared services that enable fast, reliable, and secure product development. 
 
You’ll play a key role in improving engineering velocity, system reliability, and operational excellence, ensuring that developers can build, ship, and scale with confidence. 

What you'll be doing 

• Design, build, and maintain core platform services and infrastructure that power the COS engineering organization 
• Develop internal tools, frameworks, and abstractions to improve developer experience and productivity 
• Create and evolve our cloud infrastructure (AWS), ensuring scalability, reliability, and cost-efficiency 
• Build and maintain CI/CD pipelines, deployment systems, and observability tooling 
• Establish best practices for reliability, security, and performance 
• Lead initiatives around system resilience, incident response, and uptime improvements 
• Drive infrastructure-as-code adoption and standardization (e.g., Pulumi, Terraform or similar tools) 

We'd love to hear from you if you have 

• 4+ years of experience with AWS 
• Solid understanding of CI/CD, DevOps practices, and infrastructure as code (Terraform/Pulumi) 
• Experience with observability tools (logging, metrics, tracing) and production monitoring 
• Passion for improving developer experience and enabling teams to move faster 
• Experience in strongly typed, object-oriented or TypeScript-like languages 

We care about you  

• You will receive a competitive salary along with a comprehensive benefit package.  
• Endless opportunities for personal and professional growth in a fast-growing start-up.  
• A generous PTO policy that allows you the time you need to recharge.  
• A role where your strategies and decisions directly influence the company’s operations and growth.  
• A workspace where everyone is welcomed, heard, and valued. 

Please note that we may use AI-powered tools to support parts of our hiring process, such as application screening and interview coordination. These tools help us focus our time where it matters most: getting to know candidates. All hiring decisions are made by people, and we’re committed to a fair and inclusive process.