Senior Platform Engineer

About the Project

This is a strategic initiative to modernize our build and deploy infrastructure by migrating from on-premises GitLab to GitLab Cloud. The role involves complex, interdependent infrastructure challenges spanning CI/CD pipelines, Kubernetes orchestration, web application performance optimization, and observability implementation. You’ll work on systems that require both technical depth and collaborative problem-solving skills.

Key Responsibilities

• Lead and architect the complete migration strategy for GitLab and Helm infrastructure from on-premises to GitLab Cloud
• Design and implement robust CI/CD pipeline architectures optimized for GitLab Cloud execution
• Establish GitLab Runner infrastructure with autoscaling capabilities and cost optimization
• Architect and maintain Kubernetes cluster management using Rancher
• Design and optimize web application infrastructure including:
  • HTTP/HTTPS protocols, load balancers, and reverse proxies
  • SQL database performance tuning and high availability configurations
  • WAF implementation and security policies (Fastly or equivalent)
  • Caching strategies using CDN providers (Fastly preferred)
• Drive comprehensive observability strategy using Loki & Grafana for metrics, logs, and distributed tracing
• Implement security best practices including WAF rules, DDoS protection, and access controls
• Establish infrastructure as code practices and disaster recovery procedures
• Conduct capacity planning and performance optimization for build/deploy infrastructure and application layer

Required Skills

• 4-5+ years of experience in DevOps, Platform Engineering, or Site Reliability Engineering.
• Experience with setting up & maintaining on-prem Kubernetes environment is a must.
• Expert-level Linux systems administration and troubleshooting with Red Hat Enterprise Linux (RHEL) and/or SUSE Linux Enterprise Server (SLES)
  • Advanced knowledge of systemd, SELinux/AppArmor
  • Performance tuning and kernel parameter optimization
  • Storage management (LVM, filesystems)
  • Network configuration and troubleshooting
• Deep expertise in GitLab administration including:
  • GitLab migration tools and procedures
  • GitLab API for automation
  • Runner configuration and optimization
  • GitLab Cloud (SaaS) architecture and limitations
• Advanced Kubernetes knowledge with production experience managing multiple clusters
• Production experience with Rancher for Kubernetes orchestration and management
• Comprehensive web application infrastructure expertise:
  • Deep understanding of HTTP/HTTPS protocols, TLS/SSL, and web security
  • Advanced SQL database administration (MySQL, PostgreSQL) including replication, backup/recovery
  • WAF configuration and management (Fastly WAF experience highly preferred)
  • Caching provider expertise (Fastly, Cloudflare, or Akamai) for performance optimization
• Strong proficiency in GoLang, Python, and Bash for building tools and automation

• Observability expertise with Loki & Grafana:
  • Log aggregation and analysis with Loki
  • Dashboard creation and alerting with Grafana
  • Metrics collection and visualization
• Extensive AWS administration experience including:
  • Compute: EC2, EKS, Auto Scaling
  • Storage: S3, EBS, EFS
  • Database: RDS, Aurora
  • Network: VPC, Route53, CloudFront, ALB/NLB
  • Security: IAM, Security Groups, KMS, Secrets Manager
• Proven track record of successful large-scale cloud migration projects

Primary Focus Areas

• GitLab Cloud Migration – Moving repositories, CI/CD pipelines, Helm charts, and container registries
• Build & Deploy Pipelines – Optimizing GitLab CI/CD and Helm deployments for cloud execution
• Web Application Infrastructure – Managing HTTP protocols, SQL databases, WAF (Fastly), and caching layers
• Kubernetes & Rancher – Container orchestration and cluster management
• Observability – Implementing Loki & Grafana for comprehensive monitoring and logging
• AWS Administration – Cloud infrastructure management and optimization
• Enterprise Linux Management – Red Hat or SUSE Linux systems administration

Work hours

EST working hours required (9:00 AM – 5:00 PM EST)

Benefits

• Flexible Working Style
• Diversity and Inclusion
• Learn And Grow
• Balanced Working Life
• Flexible work hours
• Health Insurance

Equal Opportunities Statement

Testlify is deeply committed to creating a workplace and global community where inclusion is not only valued but

prioritized. We’re proud to be an equal-opportunity employer, seeking to create a welcoming and diverse environment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity or expression, family status, marital status, sexual orientation, national origin, genetics, neurodiversity, disability, age, or any other non-merit-based or legally protected grounds.