Senior Site Reliability Engineer

Who you are

• 6+ years’ experience in software development enablement roles
• Solid experience owning CI/CD platforms end to end - including domains like caching, architecture, and developer self-service
• Effective use of AI tools such as Claude and Cursor for coding, troubleshooting, and reasoning. You pair these skills with a defensible opinion on where to avoid using AI tools
• Familiarity with Node/TypeScript including making code changes (e.g. exposing new metrics), Python and Terraform for automation, and developing in a Kubernetes/Helm ecosystem
• Practical experience with observability: logs/metrics/tracing, monitoring/alerting, incident management process, and tooling
• Experience working in fully remote teams - tell us how you’ve made one work better
• Harness engineering experience - building platforms for autonomous agents
• Production-at-scale experience with GCP
• Telephony and SIP architectures, FreeSWITCH in particular

What the job involves

• We are leading the shift from legacy systems to AI-first service, powered by large language models (LLMs) and designed for enterprise scale, security, and empathy. If you’re excited by the potential of LLMs, voice AI, and building category-defining technology with a kind, ambitious team, you’ll love it here
• Our SRE team builds - not just supports - an AI-native platform, and they own exciting domains like platform and harness engineering, site reliability, cloud infrastructure, CI/CD, DevEx, observability, incident management, and COGS (e.g. cloud spend visibility). We're looking for a Site Reliability Engineer who has opinions about how these domains should work and wants agency in shaping where they go. If you are energized by enabling teams to succeed through systems- and patterns-level work, come build Replicant’s platform with us!
• Contribute to patterns, design, and implementation of our domains; help shape the future of platform engineering at Replicant
• Build and improve systems that help reduce toil and enable Replicant's production infrastructure to remain available and operable under large-scale, real-time conversational AI traffic
• Extend and iterate our agent harness: Unsupervised AI agents are currently used by about 10% of the dev team - help us grow that number. The agent harness includes CI, sandboxes, guardrails, and validation (e.g. agent-first eval loops)
• Own and improve our CI/CD pipelines and surrounding developer tooling: build and test performance, deployment ergonomics, and paved paths for new services
• Participate in on-call rotation and incident management to ensure platform uptime and quality. (SRE owns the base infrastructure, not the applications; non-business-hours pages are rare)
• Our stack is TypeScript/Node and Python running on Kubernetes - primarily on GCP (we are multi-cloud), with GitLab CI, Helm, Terraform, Datadog, Prometheus, and Grafana

The application process

• Deadline to Apply: 14 September 2026 at 05:00 BST

Benefits

• Company Equity: We view our employees as the true owners of Replicant and offer company equity.
• Health insurance: We offer a competitive package with health, dental, eye care, and retirement benefits.
• Remote-friendly: From the Bay to New Brunswick—we have employees across the world, so you can work wherever works for you!
• Frequent offsites: We take team-building seriously and love working side by side.
• Flexible vacation: Take a break when you need it so you can come back refreshed and ready.
• Sabbatical program: After you’ve worked at Replicant for 5 years, you are eligible to take a sabbatical for up to five weeks.
• Equipment stipend: All employees are set up with the essential equipment, but if you have special requests, you’re provided a stipend to cover these costs.
• Wellness stipend: We want employees to feel empowered to manage your fitness, health, and mental wellbeing so we offer a yearly wellness stipend.