Ernestine Tingwei
Development
Virginia, United States
Skills
DevOps
About
ERNESTINE TINGWEI's skills align with Programmers (Information and Communication Technology). ERNESTINE also has skills associated with Consultants and Specialists (Information and Communication Technology). ERNESTINE TINGWEI has 7 years of work experience.
Work Experience
DevOps Engineer
DXC Technology
January 2019 - Present
- * Automates routine tasks using scripting languages (python/bash) and develops custom tools to enhance team productivity. * Experience with Agile methodologies, System Development Lifecycles (SDLCs), and DevOps best practices * Manage and maintain AWS resources using both Terraform and CloudFormation, ensuring consistent and repeatable infrastructure deployment. * Implement monitoring and alerting systems (e.g., Prometheus, Grafana) to proactively identify performance bottlenecks and issues, enabling faster incident response and resolution. * Design and implement AWS database solutions, including Amazon RDS (Relational Database Service), Amazon Aurora, Amazon DynamoDB, and Amazon Redshift, to meet business requirements. * Automates database provisioning and maintenance tasks using AWS CloudFormation templates, reducing manual intervention, and improving infrastructure as code (IAC) practices. * Reduce the average response time by 80% through the automation of manual processes using 65 Ansible modules. * Orchestrate containerized applications using Docker and Kubernetes, ensuring scalability and high availability of microservices. * Implement Identity and access management (IAM) policies and role-based access control (RBAC) to secure cloud environments on Aws/Azure * Documenting AWS Glue job configurations, transformations, and best practices for team reference, promoting knowledge sharing and consistency. * Design, develop, and implement automated solutions using AWS CloudFormation and Terraform, reducing provisioning time and cost by 35% * Design Jenkins open-source automation server to install code-built artifacts with code deployment and formulate several functioning CI/CD pipelines. * Develop custom security tools and scripts in bash to automate security tasks, enhancing the security posture of the organization. * Collaborate with cross-functional teams to design and implement SRE best practices including Service Level Objectives (SLOs), Service Level Indicators (SLIs), and Error Budgets, to achieve high system reliability. * Design and implement Groovy-based CI/CD pipelines to automate software builds, testing, and deployment processes. * Eliminate a single point of failure in production architecture designs by deploying service instances (e.g., EC2 OR RDS) across two or more isolated AZs based on our customer's actual resiliency and availability requirements. * Participate in on-call rotations, providing timely resolution to incidents, and maintaining high availability of AWS-hosted applications. * Ensure cloud solutions/deployments are in line with the enterprise architecture strategies and standards across business, data, application, infrastructure, network, and security spaces. * Review existing architectures to identify technical deficiencies, design gaps, and new opportunities, and create actionable recommendations for cloud migration and enhancements. * Manage version control repositories using Git and coordinate code reviews to ensure a high-quality codebase. * Monitor system performance using AWS CloudWatch and Grafana, conducting periodic capacity planning exercises. * Led the design and implementation of Docker-based containerization strategies for microservices architectures, resulting in improved scalability and simplified deployment processes. * Automate the deployment and testing of resources using Infrastructure as Code (Terraform and Cloud Formation) through pipelines using DevOps principles, allowing customers to rapidly build, test, and release code while minimizing error. * Deploy Istio service mesh to manage microservices communication, enhance security, and streamline traffic routing. * Configure Calico for network policy enforcement, isolating application workloads and enhancing cluster security. * Implement Horizontal Pod Autoscaling (HPA) based on CPU and memory metrics, optimizing resource utilization and application performance. * Create Helm charts for various applications, improving deployment consistency and simplifying rollbacks. * Utilize Sumo Logic for log aggregation, analyzing trends, and identifying anomalies for proactive issue resolution. * Able to create scripts for system administration and AWS using languages such as BASH and Python, created Lambda functions to upload code and to check changes in S3, and DynamoDB table. * Enforcing regulatory standards (PCI, SOC2, CIST BENCHMARK) using AWS Config * Integrate SonarQube for quality testing and integrate the Clamav.
Solutions Architect
Axle Informatics
November 2016 - December 2018
- * Architected staging environment for migration. * Used Auto-scaling, load balancers, and their components to equally distribute traffic throughout the environment, all via Terraform. * Developed Terraform modules. * Have used Dome9 to onboard assets of AWS, for security visibility, posture management, and IAM management. * Architected and created 3 tiers of architecture via Terraform for migrations. * Created AMI for usage across the environment. * Used cloud formation and terraform to provision and deploy both computer and networking infrastructure on a scale. * Have architected and maintained a highly secure environment with the use of IAM, Cloud Trail, and Access server login. * Architected and managed storage such as EC2 and EBS volumes * Architected and developed baseline and custom guardrails, policies, centralized policy enforcement, tagging policies, and a well-architected multi-account environment. * Have used AWS Config and entrust at an enterprise level to enforce MFA across accounts, resources, and emails within our environment. * Leverage AWS config to ensure compliance and remediations across multiple accounts within an AWS organization. * Designed and implemented highly available, scalable, and secure AWS Infrastructures using IAC tools such as Terraform. * Utilize code repositories (GitHub), and CI/CD tool (Jenkins) Improved performance on the CICD pipeline using the master-slave configuration. * Ensuring security on the CICD pipeline and EKS cluster Provisioning temporal environments for CICD to Developers using containerization tools like Docker.
Education
