Nnadi Charis

Cloud Infrastructure and DevOps Engineer with 3+ years of production experience across AWS, Azure, and GCP. Track record of building highly available Kubernetes platforms (EKS, AKS, GKE), designing Terraform-driven multi-cloud infrastructure, and shipping secure CI/CD pipelines that cut deployment overhead while maintaining reliability.

Comfortable owning infrastructure end to end: from VPC design and Nginx/HAProxy reverse proxy configuration through container orchestration, GitOps delivery with ArgoCD, and Prometheus/Grafana observability.

Holds Microsoft Certified

DevOps Engineer Expert, AWS Solutions Architect Associate, and AZ-104. Based in Lagos; available fully remote or open to relocation.

DevOps Engineer (AWS Consulting) at Vontech Group (2025-09 – Present)

• Design and manage AWS infrastructure (EC2, EKS, VPC, S3, RDS, CloudWatch) for multiple client engagements, maintaining uptime SLAs and enforcing cost optimisation controls across accounts.
• Author modular Terraform configurations and CloudFormation stacks for repeatable, zero-drift infrastructure provisioning, cutting manual setup time and eliminating configuration inconsistencies between environments.
• Build and maintain Jenkins and GitHub Actions CI/CD pipelines with integrated DevSecOps scanning (SonarQube, Trivy, OWASP), enabling secure delivery pipelines with automated rollback on failed quality gates.
• Support client cloud migrations to AWS, applying IAM least-privilege policies, VPC network segmentation, and security compliance controls throughout each engagement lifecycle.
• Diagnose and resolve production Linux and containerised workload incidents: kernel parameter tuning, Nginx routing failures, Docker networking issues, and EKS pod scheduling problems.
• Work directly with senior architects and engineering leads to translate business requirements into infrastructure design decisions and delivery timelines.

DevOps Engineer at EPass Africa (2025-06 – 2025-08)

• Configured and managed Nginx as a production reverse proxy with SSL termination, upstream health checks, and domain routing across containerised services on DigitalOcean, maintaining 99.9% uptime throughout.
• Designed zero-downtime deployment workflows using Docker and GitHub Actions, reducing manual deployment effort by 40% while eliminating service interruptions during release windows.
• Built a full observability stack with Prometheus and Grafana, including alerting rules and dashboards that cut mean time to detection (MTTD) for critical production incidents by 25%.
• Managed TCP/IP networking, HTTP protocol configurations, and Cloudflare CDN settings to ensure consistent low-latency global access across user regions.
• Debugged production incidents end to end: from DNS resolution and Nginx routing through to backend service behaviour, resolving issues without introducing additional infrastructure complexity.

Cloud Engineer at NTS Africa (2024-04 – 2025-05)

• Automated infrastructure provisioning across Azure using ARM Templates and Bicep, improving deployment response times by 30% and removing the manual configuration steps that caused drift across environments.
• Integrated Azure Active Directory with on-premises systems for hybrid identity management, securing access for 10+ devices and users under a least-privilege policy framework.
• Configured and hardened NSGs, Azure Firewall, and Load Balancers across 5+ subnets, with explicit attention to traffic control, segmentation, and blast-radius containment.
• Built Azure Monitor dashboards covering 100% of critical infrastructure (VMs, databases, networks), enabling proactive alerting and faster identification of issues before they impacted users.
• Investigated and resolved PostgreSQL performance bottlenecks using query inspection and index analysis, eliminating slow queries before they reached production user impact thresholds.

Software Engineer at ALX Africa (2022-03 – 2022-12)

• Built RESTful APIs and backend services with Python and Django, developing a working understanding of application-layer request handling, service communication, and Linux server administration.
• Completed an intensive project-based curriculum covering Linux internals, C, Python, JavaScript, and advanced data structures, with continuous assessment through sprint-based peer review.

B.Sc. in Systems Engineering – University of Lagos