Senior Platform Engineer

Reports to: Lead Platform Engineer
Location: San Diego, CA
Compensation: $150,000 - $175,000

About ReflexAI

At ReflexAI, we are building the operating system for conversation performance. We believe that people will always be at the center of high-stakes conversations, and our mission is to ensure they enter those conversations with confidence and deliver an exceptional experience every time. Our platform combines hyper-realistic AI-powered training simulations with intelligent QA to support frontline teams in mission-critical conversations. Our tools work in 25 languages, are endlessly customizable to meet each business’s unique needs, and are used by customers ranging from crisis support call centers to healthcare organizations to customer service teams to sales teams negotiating big deals — any organization where empathy, quality, and excellence matter in every interaction.

About the Role

We are looking for a Senior Platform Engineer to establish and grow ReflexAI’s Platform Engineering function. This is a high-impact, multidisciplinary role for someone who thrives in growing startups, enjoys wearing multiple hats, and is excited about working cross-team in a mission-driven organization .

You will improve and maintain our multi-cloud infrastructure (GCP + AWS), expand our golden paths and guardrails, refine our observability and monitoring, and elevate our security and compliance posture with every commit. As the second member of a new team, your input to our technical vision, partnerships with other teams and engineers, and expertise and ability to deliver high quality software and systems will make you successful.

This is a rare opportunity to join a fast-scaling AI company that believes in the value of platform engineering, getting your hands dirty building tools, infrastructure, and processes used daily by every engineer.

What You’ll Do

Build and Refine Core Infrastructure

• Design, automate, and reduce the toil associated with maintaining ReflexAI’s multi-cloud infrastructure across GCP and AWS.

• Work with Terraform and Terragrunt, Github, Kubernetes, associated tooling, and the new generation of AI-driven development tools

• Create safe, reliable, scalable, speedy, and secure paths for software and systems to reach production.

Build a High-Quality Developer Experience

• Own the tooling that engineers use to build, test, and deploy code.

• Standardize pipelines, templates, guard rails, and golden paths to accelerate developer velocity.

• Introduce and improve internal tooling that reduces operational overhead.

Streamline Observability, Monitoring, and Operations

• Improve on-call ergonomics and reduce MTTR through better instrumentation.

• Drive observability, reliability, security and cost efficiency with Datadog

Strengthen Infrastructure Security

• Implement best practices for secrets management, IAM, network security, vulnerability scanning, and container security.

• Build automated checks and secure-by-default workflows into CI/CD and cloud environments.

• Help establish the compliance and security practices that ensure ReflexAI meets industry and customer expectations.

What We’re Looking For

• 5–7+ years of experience in DevOps, SRE, infrastructure, and platform engineering roles.

• Deep hands-on expertise with cloud platforms (GCP and AWS) as well as Terraform and Terragrunt, CloudRun, Fargate, and managed Kubernetes.

• Strong experience building and maintaining CI/CD pipelines, guard rails, and golden paths for modern application stacks.

• Proficiency in modern observability ecosystems (Datadog experience is a major plus).

• Solid understanding of cloud security, IAM, container security, and network architecture.

• Experience with and excitement about AI-driven development.

• U.S. citizenship is required. This role supports ReflexAI's U.S. Department of Veterans Affairs contract and requires access to systems for which citizenship is a condition of access.

Nice to haves

• Experience working in a fast-growing startup environment.

• Backend-related coding experience, primarily with Typescript

• Background supporting machine learning, LLM serving, or data-intensive workloads.

• Exposure to compliance frameworks (SOC 2, HIPAA, GDPR, ISO 27001, HITRUST) and knowledge of how this impacts infrastructure, reliability, and platform work.

• Prior experience building internal developer platforms or paved-path tooling.

Who You Are

• You thrive in environments where the best idea wins.

• You enjoy building tools and systems that increase the productivity of every engineer.

• You seek ownership and autonomy, but also value strong cross-team collaboration.

What we offer

• Some of the most rewarding work you will ever do, solving real problems and helping people be the best versions of themselves. We work with organizations around the world to empower their people to optimize every conversation and perform their best when it matters most - healthcare, veteran support, crisis management, emergency dispatch, and mental health.

• Work alongside a team that is exceptionally smart and ambitious, but also humble and kind

• Flexibility to work remotely from anywhere in the United States

• Generous retirement, equity, healthcare, and PTO policies

ReflexAI is an equal opportunity employer. We are committed to equal employment opportunity regardless of race/ethnicity, color, ancestry, religion, sex, national origin, sexual orientation, age, marital status, disability, gender, military status, neurodiversity, or any other federal, state or local protected class in the United States.