Upgrade, a fintech company, is seeking a Senior Site Reliability Engineer to enhance the reliability, performance, and scalability of systems in a completely remote role. Responsibilities include building a resilient platform, automating deployment and incident response, monitoring and troubleshooting, and collaborating with various stakeholders. Requires 5+ years of SRE/DevOps experience in a cloud environment, proficiency in AWS services and scripting languages, and knowledge of system troubleshooting.