• Collaborate closely with architects, developers, QA, and security teams to ensure smooth and reliable environment operations • Work in close partnership with the platform team, based on shared ownership, knowledge exchange, and mutual support • Own and operate containerized application platforms based on Docker and Kubernetes, ensuring reliability, scalability, and operational excellence • Design and deliver dynamic test environments at scale, including multiple parallel, per–merge request (branch-based) deployments • Build, maintain, and standardize CI/CD pipelines by creating reusable templates and components in GitLab CI • Drive deployment automation and GitOps practices • Identify operational bottlenecks and implement automation to reduce manual effort and improve delivery speed • Embed security-by-design across the SDLC, including pipeline hardening and automated security checks • Build and operate observability platforms: monitoring, logging, and diagnostics (Prometheus, Grafana, ELK/EFK/Loki, etc.) • Participate in on-call and incident response, including troubleshooting, root-cause analysis, and post-mortems • Take end-to-end ownership of the solutions you build (“you build it, you run it”).

About GitHub GitHub is the world’s leading platform for agentic software development — powered by Copilot to build, scale, and deliver secure software. Over 180 million developers, including more than 90% of the Fortune 100 companies, use GitHub to collaborate, and more than 77,000 organisations have adopted GitHub Copilot. Locations In this role you can work from Remote, United Kingdom Overview GitHub is growing its Customer Success & Support team and we're seeking experienced professionals to elevate our technical customer support efforts. As a Customer Reliability Engineer III, you will efficiently manage and resolve customer issues and act as a liaison between customers and the engineering team. The ideal candidate will drive transformative customer experiences, ensuring long-term satisfaction and loyalty while fostering innovation and collaboration across teams. This role may require working non-standard working hours, including weekends and holidays on-call as part of a team-wide rotation. Responsibilities - Work with assigned customers via support tickets and/or real-time interaction (phone/screen sharing) to solve technical issues related to their usage of GitHub products often involving Linux servers, source code, and web application issues. - Act as a single point of contact for technical issues with ability to troubleshoot and resolve complex issues independently. - Collaborate with the Support and Engineering teams to resolve product issues requiring code changes. - Lead incident response for outages affecting assigned customers, followed by delivery of postmortem reports. - Act as a single point of contact for specific enterprise customers to provide performance, and best practice advice and assessment related to GitHub and customer's infrastructure. - Understand and maintain documentation around the customer infrastructure, workflows, and configuration of GitHub - Enterprise Server or GitHub Enterprise Cloud environment. - Coordinate and collaborate with other teams at GitHub when additional expertise is needed to resolve customer issues. - Manage customer incidents and outages, including joining Zoom/screen share sessions for live triage. - Perform incident postmortems, ticket analysis, and system health checks for Premium Support customers as needed. - Lead quarterly business reviews for the assigned accounts by presenting metrics, data, and health check summary and recommendations. - Organize and lead weekly/bi-weekly touchpoints with assigned accounts to review ongoing Support issues and projects. - Work proactively with customers on activities such as coordinating upgrades and ensuring their installation is running smoothly. - Set-up and onboard new assigned customers into the program. - Provide weekend on-call support as part of the team rotation (8 hour shifts, during normal work hours). - Update and maintain various repositories, including team and public documentation, and actively contribute to cross-organization strategy discussions. - Ensure that systems and processes comply with security standards and regulations, implementing best practices to protect customer data and maintain system integrity. Qualifications Required Qualifications: - 5+ years' experience in technical customer support, technical writing, system administration, or related roles, - OR bachelor's degree in computer science or related field AND 3+ years' experience in technical customer support, technical writing, system administration, or related roles, - OR equivalent experience. Preferred Qualifications: - Experience leveraging AI tools and technologies to enhance business processes and drive innovation. - Deep knowledge of Git, GitLFS, GitHub Administrator, and GitHub - Worked closely with large complex customer accounts in a technical capacity - Experience with production-level virtualization platform(s) and/or cloud provider(s) (e.g., VMware ESX, KVM, AWS, Azure) - Proficiency with and/or ability to understand and update code and scripts (e.g., Shell, Ruby, Go) - Proficiency in common applications in the web application stack (e.g., HAProxy, Nginx, MySQL, and Unicorn) GitHub values - Customer-obsessed - Ship to learn - Growth mindset - Own the outcome - Better together - Diverse and inclusive Manager fundamentals - Model - Coach - Care Leadership principles - Create clarity - Generate energy - Deliver success Who We Are GitHub is the world’s leading AI-powered developer platform with 150 million developers and counting. We’re also home to the biggest open-source community on earth (and 99% of the world’s software has open-source code in its DNA). Many of the apps and programs you use every day are built on GitHub. Our teams are dreamers, doers, and pioneers, leading the way in AI, driving humanitarian efforts around the globe, and even sending open source to Mars (and beyond!). At GitHub, our goal is to create the space you need to do your best work. We’re remote-first and offer competitive pay, generous learning and growth opportunities, and excellent benefits to support you, wherever you are—because we know that people flourish when they can work on their own terms. Join us, and let’s change the world, together. Equal Employment Opportunity GitHub is made up of people from a wide variety of backgrounds and lifestyles. We embrace diversity and invite applications from people of all walks of life. We don't discriminate against employees or applicants based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other differences. Also, if you have a disability, please let us know if there's any way we can make the interview process better for you; we're happy to accommodate!

• Ensure the reliability, security, and performance of backend systems. • Establish best practices in DevOps, observability, and CI/CD. • Work closely with development teams to deploy code, automate processes, and maintain high-availability distributed systems. • Design and implement scalable infrastructure using Terraform, Kubernetes, and containerized environments. • Develop monitoring, logging, and alerting solutions to maintain system health and minimize downtime. • Build and optimize CI/CD pipelines, ensuring efficient deployment of backend services and smart contracts. • Identify and resolve bottlenecks in distributed systems to improve scalability and efficiency. • Implement and enforce security policies, including key management, access controls, and network security.

ROLE SUMMARY The Digital Technology and AI organization's mission is to innovate, build, standardize, and scale breakthrough AI/GenAI solutions, products, and platforms that enable Pfizer to connect digitally with all our customers. We seek a DevOps Engineer who will support a portfolio of AI platforms and services. You will work alongside senior engineers to implement DevOps best practices, maintain CI/CD pipelines, and help ensure the security, reliability, and scalability of our AI infrastructure. This is an excellent opportunity to grow your career in DevOps while working with cutting-edge AI technologies. ROLE RESPONSIBILITIES The DevOps engineer colleague's responsibilities include but are not limited to: Infrastructure & Cloud Operations: - Support AWS cloud infrastructure using Infrastructure as Code (CloudFormation) - Work with AWS services including ECS Fargate, Lambda, Step Functions, S3, DynamoDB, and ECR - Assist in managing multi-environment deployments (dev, test, prod, sandbox) - Help maintain and monitor cloud resources for performance and cost optimization - Participate in infrastructure lifecycle activities including patches and upgrades CI/CD & Automation: - Maintain and enhance CI/CD pipelines using GitHub Actions - Support deployment processes for microservices across multiple environments - Develop automation scripts (Python/Bash) for operational tasks - Manage Docker container builds and deployments - Contribute to GitOps practices and infrastructure as code initiatives Security & Compliance: - Implement security scanning in CI/CD pipelines (SonarQube, Snyk ) - Help manage secrets and credentials using AWS Secrets Manager - Support compliance with enterprise security policies and tagging standards - Respond to security vulnerabilities and incidents under guidance - Participate in security reviews of infrastructure Monitoring & Operations: - Set up and maintain monitoring and alerting using Grafana, Dynatrace, and CloudWatch - Participate in incident response and troubleshooting - Document operational procedures and runbooks - Support on-call rotation for production systems - Help drive continuous improvement initiatives Collaboration: - Work with development teams to understand deployment requirements - Document infrastructure changes and technical procedures - Participate in technical design discussions - Share knowledge and learn from senior team members BASIC QUALIFICATIONS - Bachelor's degree in Computer Science , Engineering, or related field required - 4+ years of experience working with cloud platforms, preferably AWS - Experience with CI/CD pipelines and deployment automation - Hands-on experience with Docker and containerization - Familiarity with AWS services such as: - Compute : ECS, Lambda, or EC2 - Storage: S3, DynamoDB - Container: ECR - Security: IAM, Secrets Manager - Experience with Infrastructure as Code (CloudFormation or Terraform) - Working knowledge of Git version control - Scripting & Programming: Python or Bash scripting experience - CI/CD Tools: GitHub Actions, Jenkins, or similar - Monitoring Tools: Experience with CloudWatch, Grafana, Dynatrace, or similar - Security: Familiarity with security scanning tools - Operating Systems: Linux/Unix administration skills - Strong problem-solving and troubleshooting abilities - Good communication and collaboration skills - Eagerness to learn new technologies and best practices - Ability to work both independently and as part of a team - Attention to detail and commitment to quality - Self-motivated with good time management Work Location Assignment: Hybrid Purpose Breakthroughs that change patients' lives... At Pfizer we are a patient centric company, guided by our four values: courage, joy, equity and excellence. Our breakthrough culture lends itself to our dedication to transforming millions of lives. Digital Transformation Strategy One bold way we are achieving our purpose is through our company wide digital transformation strategy. We are leading the way in adopting new data, modelling and automated solutions to further digitize and accelerate drug discovery and development with the aim of enhancing health outcomes and the patient experience. Flexibility We aim to create a trusting, flexible workplace culture which encourages employees to achieve work life harmony, attracts talent and enables everyone to be their best working self. Let's start the conversation! Equal Employment Opportunity We believe that a diverse and inclusive workforce is crucial to building a successful business. As an employer, Pfizer is committed to celebrating this, in all its forms - allowing for us to be as diverse as the patients and communities we serve. Together, we continue to build a culture that encourages, supports and empowers our employees. Disability Inclusion Our mission is unleashing the power of all our people and we are proud to be a disability inclusive employer, ensuring equal employment opportunities for all candidates. We encourage you to put your best self forward with the knowledge and trust that we will make any reasonable adjustments to support your application and future career. Your journey with Pfizer starts here! Information & Business Tech