Senior Infrastructure Engineer

LayerX is seeking a Senior Infrastructure Engineer to join our Applicative Infrastructure team. In this role, you will tackle large-scale, high-performance, cloud-native infrastructure challenges and help shape a security-critical platform protecting millions of browsers across global enterprises.

You will lead the design and development of complex backend security capabilities, own mission-critical microservice-based systems, and drive innovations that power our next-generation SaaS at scale. This is a backend infrastructure role with a strong focus on distributed systems, JavaScript/TypeScript internals, security, and developer experience.

LayerX’s user-first browser security platform turns any browser into the most protected and manageable workspace by providing real-time monitoring and governance over users’ activities on the web, protecting enterprise applications, data, and devices from web-borne risks — all with near-zero impact on user experience.

Our Stack-

Cloud & Infrastructure: AWS, GCP, Kubernetes, Terraform + CDKTF, ArgoCD, GitHub Actions

Data & Messaging: Kafka, Redis, Postgres, DynamoDB

Programming: Node.js, TypeScript, Rust, Python

Specialized: Deep understanding of JavaScript internals, browser internals (Chrome, Edge, Firefox, Safari)

LayerX Security:

LayerX’s user-first browser security platform turns any browser into the most protected & manageable workspace, by providing real-time monitoring and governance over users’ activities on the web, protecting the enterprise’s applications, data, and devices from web-borne risks. All with near-zero impact on user experience.

Our Engineering Values:

• Customer First
• Engineering Excellence
• Continuous Improvement
• Shared Accountability
• Strong Ownership
• Challenge Anything
  
  

• Architect and build large-scale, cloud-native backend infrastructure for high-performance, security-critical systems.
• Own mission-critical production systems safeguarding enterprise environments and millions of browsers worldwide.
• Lead and influence architectural decisions for backend infrastructure and platform services.
• Collaborate with DevOps, Product, and Security teams to deliver robust, scalable, and maintainable backend solutions.
• Ensure system reliability and quality through performance tuning, automated testing, and peer reviews.
• Explore the cutting edge of web and browser security from a backend and infrastructure perspective.
• Drive rapid delivery, shipping improvements multiple times per day.
• Champion Developer Experience (DevX) by improving tooling, CI/CD pipelines, and developer workflows.
• Join a tight-knit engineering team solving complex infrastructure and security challenges together.
  
  

• Requirements:
• 5+ years of experience in backend or infrastructure engineering.
• Deep understanding of JavaScript / TypeScript internals (runtime behavior, performance, promises).
• Proven system design and architecture expertise for large-scale, cloud-native environments.
• Track record of leading technical design, reviews, and implementations.
• Hands-on experience with AWS, GCP, or Azure, Kubernetes, CI/CD, and GitOps.
• Strong background in microservices, data modeling, and scaling distributed systems using relational and NoSQL databases.
• Skilled in debugging, optimizing, and scaling complex distributed systems.
• Ability to quickly master new technologies in a fast-paced environment.
• Excellent communication, problem-solving, and collaboration skills.
• Self-driven, proactive, and thrives in challenging technical environments.
  
  

• Proven experience scaling backend infrastructure.
• Deep knowledge of web technologies, browser internals, security, and performance.
• Background in cybersecurity.
• B.Sc. in Computer Science / Software Engineering, or equivalent hands-on expertise (including relevant IDF experience).