Real-Time Site Reliability Engineer — Production Uptime & Scale

Alcor; Kraków; On-site; PLN 250,000 - 380,000; Full time

Job summary

Alcor is hiring a Site Reliability Engineer to own production reliability for a real-time platform where uptime and latency are the product. You will manage SLOs, incident response, on-call rotations, and production scaling with a focus on blameless postmortems and fast recovery.

Expect a startup tempo with weekly deploys, 1-week sprints, and a culture that values fault-tolerance and AI-assisted tooling to boost velocity while keeping reliability at the center of every decision.

Qualifications

• 8+ years operating production systems at scale.
• Strong Go or Python – you automate reliability.
• Deep on event-driven and real-time systems reliability.
• Strong monitoring and uptime mindset with proactive alerting.
• Good networking understanding (TCP/UDP, TLS, WebSocket, DNS, load balancing).
• GCP at scale; multi-cloud literacy a plus and multi-tenancy experience.

Responsibilities

• Own SLOs and error budgets per tenant / service.
• Incident response and blameless postmortems.
• Production scaling and capacity planning.
• Observability depth (p50/p95/p99 per event hop).
• On-call rotation with DevOps; communicate outages clearly.
• Deploy-safety collaboration with DevOps and automated rollbacks.

Skills

SRE & incident response

Go

Python

Cloud native / GCP

Observability & monitoring

Automation / runbooks

Systems at scale

Networking fundamentals

Chaos engineering

On-call ownership

Tools

NATS

WebSocket

Streaming pipelines

CI/CD pipelines

Job description

Alcor is hiring a Site Reliability Engineer to own production reliability for a real-time platform where uptime and latency are the product. You will manage SLOs, incident response, on-call rotations, and production scaling with a focus on blameless postmortems and fast recovery.

Expect a startup tempo with weekly deploys, 1-week sprints, and a culture that values fault-tolerance and AI-assisted tooling to boost velocity while keeping reliability at the center of every decision.