Senior AWS Cloud Infrastructure Engineer – DNS & Edge; LATAM-Remote

About The Role

O3 is hiring a senior AWS Platform Engineer for a roughly six‑month contract, supporting the infrastructure, routing, and production cutover for an enterprise digital platform migration for a membership‑association client. This is a combined architecture and hands‑on build role. You’ll lead the cloud infrastructure and edge‑layer architecture end to end, from design through production cutover, while working alongside O3 and the client’s separate front‑end vendor.

O3 will remain the primary client‑facing lead, while this contractor will own the technical architecture and implementation for the infrastructure, routing, and cutover workstream.

• Contract role with an immediate start
• Candidates should be available to interview and begin onboarding promptly if selected
• Approximately six‑month engagement
• Expected workload: ~10 hours per week during discovery phase; ~20 hours per week for approximately 10 weeks during the build phase; tapering part‑time support toward launch, with focused availability required around the January production cutover

• Lead the solution architecture for infrastructure, routing, and platform cutover, including defining the boundary between O3’s platform work and the front‑end vendor’s build
• Design and implement a redirect and routing solution using AWS Cloud Front
• Stand up AWS infrastructure, including VPCs, public/private subnets, peering, and environment configuration across test and production
• Build and manage infrastructure‑as‑code and CI/CD workflows using Git Hub
• Set up and manage a Neon Postgres deployment
• Configure the Cloud Front edge layer and implement redirect‑based routing
• Stand up edge security using AWS WAF, rate limiting, and bot protection
• Provision TLS through ACM and plan and execute a live DNS cutover for a high‑traffic site, including the runbook, rollback plan, smoke testing, and post‑launch hypercare
• Validate connectivity and routing across Vercel, Word Press VIP, Salesforce, and other third‑party services to ensure existing integrations continue functioning through the cutover

• Deep AWS experience, especially VPC networking, Cloud Front, edge routing, and DNS
• Strong infrastructure‑as‑code and CI/CD experience
• Hands‑on experience with Neon Postgres
• A track record of leading production DNS migrations and cutovers for live, high‑traffic sites
• Experience designing and implementing redirect and routing solutions at the edge
• Comfort operating as the primary infrastructure owner and coordinating across multiple vendors
• Strong written and verbal communication skills
• Availability to overlap with US Eastern working hours, particularly around cutover coordination

• Working knowledge of how Vercel, Word Press VIP, and Salesforce manage DNS, CDN, routing, and origin configuration
• Experience with enterprise web platforms or large‑scale digital migrations
• Experience with AWS WAF, rate limiting, bot protection, and post‑launch hypercare