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Site Reliability Engineer

Site Reliability Engineer

PrimerSan Francisco, CA, United States
30+ days ago
Job type
  • Full-time
Job description

Primer helps B2B products break out of the B2C-centric marketing box. Our platform turns consumer ad channels, data streams, and emerging AI workflows into measurable growth engines for go-to-market teams. We ingest billions of rows from first- and third-party sources, map them to rich company context, and surface hyper-targeted audiences and real-time performance alerts—all without vendor lock-in.

That only works if the lights stay on , queries stay fast , and incidents stay rare . That’s where you come in.

As our first dedicated Site Reliability Engineer , you’ll be the force multiplier who designs, builds, and operates the infrastructure that powers everything : petabyte-scale data pipelines, LLM-backed services, and the APIs our customers (and engineers!) rely on every day. You’ll pair hard-won ops experience with a mentor’s mindset—levelling up the whole team while keeping us four steps ahead of failure.

YOUR MISSION

Own reliability from design to customer.

  • Define and uphold SLOs / SLIs, manage error budgets, and lead blameless post-mortems.
  • Automate toil out of existence—CI / CD, infra-as-code, capacity planning, and chaos testing.
  • Drive incident response end-to-end : detection, mitigation, root-cause analysis, and long-term fixes.
  • Scale multi-cloud data pipelines (Prefect, ClickHouse, Iceberg) and GPU / LLM workloads.
  • Teach best practices, review designs, and coach engineers so reliability becomes a team sport.

WHAT YOU’LL DO

  • Design, implement, and tune distributed systems that handle high-throughput B2B traffic .
  • Harden our AWS stack with IaC (e.g. Terraform)
  • Instrument everything—logs, traces, metrics, and AI-powered anomaly detection.
  • Champion security, cost optimization, and disaster-recovery strategies.
  • Jump into the weeds when something breaks, fix it fast, then automate it away.

    • WHAT YOU’LL BRING

    Must-Haves

  • 5+ years owning production systems at meaningful scale (sub-second latency, “four-nines” targets).
  • Mastery of SRE fundamentals : SLO / SLI design, error budgets, incident playbooks.
  • Deep hands-on with Linux, networking, containers / K8s, and at least one major cloud (AWS / GCP / Azure).
  • Proven track record automating infra with Terraform, Helm, or similar IaC tooling.
  • Fluency in at least one systems / scripting language (Go, Python, Rust, etc.).
  • Experience operating complex data pipelines (Prefect, Airflow, Temporal) or real-time streaming systems.
  • History of mentoring engineers and embedding reliability culture across teams.
  • Pragmatic decision-maker—balances uptime, velocity, and cost for startup reality.
  • Curiosity for AI-augmented ops (LLM chat-ops, anomaly detection, self-healing).

    • Nice-to-Haves

  • Managed GPU clusters and ML inference workloads.
  • Operated data lakes / lakehouses at scale (Iceberg, Delta, etc.).
  • Meaningful open-source contributions in SRE, DevOps, or data-infra projects.

    • WHY PRIMER

  • Mission with impact – We’re unlocking new growth channels for thousands of B2B marketers.
  • High-trust, low-ego culture – Fully distributed team, meeting-light weeks, Friday focus days.
  • Work & life, balanced – Five weeks PTO, generous parental leave, and flexibility for families.
  • Career rocket-fuel – Small team, huge problems, real ownership. Shape the future with bold innovators, driving impact that redefines industries.
  • Diverse & global – Teammates span six countries—and counting.
  • Intro Call with Engineering Manager – 30 min
  • System Design – 60 min
  • Operational Excellence Drill-down – 60 min
  • Strategic Pragmatism Chat with CTO – 45 min
  • Technical Coding / Systems Deep Dive – 30 min
  • Culture & Values with CEO – 45 min

    • Decision typically within 24-48 hrs of final conversation.

    READY TO LEVEL UP B2B MARKETING INFRASTRUCTURE?

    Email careers@sayprimer.com with your résumé, LinkedIn, GitHub, or anything that showcases your reliability superpowers. Let’s build the future—without the fire-drills.

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    Site Reliability Engineer • San Francisco, CA, United States