Senior Infrastructure Engineer

Twilio is a company shaping the future of communications and is looking for a Senior Infrastructure Engineer to join their team. The role involves building and scaling Stytch’s core product, delivering secure identity experiences, and collaborating with product and engineering leadership to set infrastructure direction and deliver high-impact features.

Responsibilities:

• Build and own the infrastructure and platform capabilities that power Stytch’s identity platform as it scales across Twilio—ensuring security, reliability, and performance for every customer
• Design, implement, and operate scalable cloud infrastructure (AWS/EKS, ECS, networking, data stores), balancing uptime, cost, and developer velocity
• Partner closely with Product and Engineering leadership to set infrastructure direction, translate platform needs into technical plans, and deliver high-impact roadmap work
• Collaborate across Twilio and Stytch teams to align on architecture, integrate platform capabilities, and unblock cross-team initiatives
• Operate with deep technical ownership: author design docs, drive key technical decisions, review code, and stay close to the systems you ship
• Build in ambiguity—break down complex problems, make pragmatic tradeoffs, and adopt new technologies or strategies when they improve outcomes
• Improve production quality and resilience through strong observability, incident response, automated remediation, and continuous reliability engineering
• Make developers’ lives easier by building self-service tooling, safer deployment patterns, and reliable platform primitives that accelerate product teams
• Mentor and support other engineers through pairing, feedback, and knowledge-sharing, helping raise the team’s technical bar and culture

Requirements:

• 6+ years of experience as an Infrastructure or Platform Engineer building and operating high-scale, mission-critical cloud production systems
• Strong experience with containerization and orchestration (Kubernetes/EKS, Docker), Infrastructure as Code (Terraform, GitOps, or similar) and AWS
• Hands-on proficiency in at least one modern programming language used in production
• Experience designing and running observability and on-call systems (e.g., Datadog, ELK, Prometheus/Grafana)
• Experience scaling cloud infrastructure for distributed systems, including relational databases and high-availability service architectures
• Excellent written and verbal communication skills; comfortable writing design docs and leading technical discussions
• Bachelor's degree in Computer Science or equivalent practical experience
• Schedule: ability to work non-standard, on-call rotation weekend and holiday hours
• Experience with multi-region or global infrastructure, including disaster recovery and data replication strategies
• Familiarity with enterprise-scale platform challenges: multi-tenant infrastructure, compliance, and cost/performance optimization
• Builder at heart. Through a hobby or your profession, you are passionate about being hands on and seeing your work come to life