I am a Site Reliability Engineer with 5+ years of experience operating and maintaining mission-critical cloud-native applications both in the cloud and on-premises. I have strong expertise in Kubernetes (AKS), Linux administration, IaC with Terraform and Ansible, and CI/CD pipelines using Jenkins. I enjoy building reliable, scalable platforms with observability in mind and collaborating with security and development teams to improve overall system reliability. In my work, I focus on automation, DevSecOps practices, and continuous improvement of service availability and performance. I thrive in cross-functional environments, guiding architecture and change-management decisions while keeping a friendly, practical mindset. I'm committed to secure-by-design practices and empowering teams to ship fast without sacrificing resilience.

Chukwuemeka Ujomu

I am a Site Reliability Engineer with 5+ years of experience operating and maintaining mission-critical cloud-native applications both in the cloud and on-premises. I have strong expertise in Kubernetes (AKS), Linux administration, IaC with Terraform and Ansible, and CI/CD pipelines using Jenkins. I enjoy building reliable, scalable platforms with observability in mind and collaborating with security and development teams to improve overall system reliability. In my work, I focus on automation, DevSecOps practices, and continuous improvement of service availability and performance. I thrive in cross-functional environments, guiding architecture and change-management decisions while keeping a friendly, practical mindset. I'm committed to secure-by-design practices and empowering teams to ship fast without sacrificing resilience.

Available to hire

I am a Site Reliability Engineer with 5+ years of experience operating and maintaining mission-critical cloud-native applications both in the cloud and on-premises. I have strong expertise in Kubernetes (AKS), Linux administration, IaC with Terraform and Ansible, and CI/CD pipelines using Jenkins. I enjoy building reliable, scalable platforms with observability in mind and collaborating with security and development teams to improve overall system reliability. In my work, I focus on automation, DevSecOps practices, and continuous improvement of service availability and performance.

I thrive in cross-functional environments, guiding architecture and change-management decisions while keeping a friendly, practical mindset. I’m committed to secure-by-design practices and empowering teams to ship fast without sacrificing resilience.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate

Work Experience

Site Reliability Engineer II at Mastercard
October 1, 2022 - December 1, 2024
Operated and maintained 24/7 production systems; on-call responsibilities; instrumented observability stack with Prometheus, Grafana, and Elastic; provisioned cloud infrastructure on AWS/Azure using Terraform and Ansible; managed containerised workloads on Kubernetes (AKS) with RBAC, ingress, and HPA; led Sev1/Sev2 incident detection, triage, and RCA; collaborated with security teams to implement DevSecOps practices; automated operational workflows with Python/Bash.
Junior DevOps Engineer at EML Payments
April 1, 2022 - September 1, 2022
Supported AWS-based infrastructure for payment applications; assisted in CI/CD deployment validation and environment promotion; performed Linux diagnostics, log analysis, and production health checks to maintain platform availability.
Technical Support Engineer at Payoda Technologies (Lenovo Contract)
December 1, 2021 - March 1, 2022
Diagnosed and resolved enterprise infrastructure issues in SLA-driven environments; followed ITIL-based incident and change management; coordinated cross-functional teams to deliver timely resolutions.
AI Data Annotator at Outlier AI (Scale AI)
November 1, 2025 - March 1, 2026
Evaluated and rated AI-generated responses for RLHF pipelines; labeled large volumes of text data for supervised ML training; contributed to bias detection and error pattern analysis to improve data quality.

Education

MSc Cybersecurity at National College of Ireland
January 11, 2030 - May 12, 2026

Qualifications

BSc Information & Communication Technology
January 11, 2030 - May 12, 2026
DevOps & SRE Programme
January 11, 2030 - May 12, 2026
KodeKloud Linux Essentials
January 11, 2030 - May 12, 2026
Linux Professional Institute
January 11, 2030 - May 12, 2026
CCNA
January 11, 2030 - May 12, 2026
PCI 1
January 11, 2030 - May 12, 2026

Industry Experience

Financial Services, Software & Internet, Other