Senior Infrastructure Engineer - Stytch

Twilio is a company focused on shaping the future of communications and empowering developers worldwide. They are seeking a Senior Infrastructure Engineer to build and scale Stytch’s core product, delivering secure identity experiences and collaborating closely with product and engineering leadership.

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