About this role.
This Senior Site Reliability Engineer role owns reliability, performance, and operational stability for a high-traffic platform handling approximately 5–7k requests per second. The engineer will manage production incidents, participate in a 24/7 on-call rotation, conduct root-cause analysis, and implement durable corrective actions. Core technical work includes Kubernetes on AWS EKS, Terraform, Helm, GitOps with FluxCD or ArgoCD, CI/CD, and observability tooling. The position is highly hands-on and requires independent judgment during time-sensitive production events. Close collaboration with engineering teams is essential to deploy safely and reduce customer impact.
Role DNA
A quick view of the complexity, pace, ownership and collaboration implied by the job description.
Job Complexity
5/5Pace & Pressure
5/5Autonomy Level
5/5Communication Load
4/5Salary analysis
Estimated compensation compared with the broader US market for similar roles.
Core skills
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Sample interview questions
I would first assess user impact and inspect key signals such as request latency, error rate, saturation, pod health, node capacity, and recent deployments. I would correlate metrics, logs, traces, and Kubernetes events to isolate whether the cause is application behavior, dependency latency, networking, resource contention, or infrastructure failure. I would mitigate safely through actions such as rollback, scaling, traffic controls, or dependency protection, then document the incident and drive a root-cause fix.
I would begin by mapping alerts to customer-impacting service-level indicators and defining clear severity, ownership, and runbooks. I would remove noisy symptom alerts, add actionable alerts for error-budget burn, availability, latency, and saturation, and ensure each notification provides diagnostic context. The goal is to reduce alert fatigue while ensuring responders are paged only for issues requiring immediate human action.
Terraform is well suited to declaratively provision cloud infrastructure such as networks, IAM, EKS, and managed services, while GitOps continuously reconciles Kubernetes workloads and configuration from version-controlled repositories. I would use pull requests, automated validation, environment promotion, reviewed plans, and controlled reconciliation to make changes auditable and reversible. State protection, least-privilege access, and drift detection are also essential.
A strong postmortem is blameless and includes the impact, timeline, detection method, contributing technical and process factors, mitigation steps, root cause, and clearly owned follow-up actions. It should distinguish between immediate remediation and longer-term prevention work. The output should improve monitoring, runbooks, architecture, testing, or operational processes rather than merely document the event.
I would ensure services have clear ownership, escalation paths, dashboards, runbooks, and tested rollback procedures before relying on on-call responders. I would prioritize automation for common recovery tasks and regularly review alert quality, incident trends, and operational load. During incidents, I would communicate concise status updates, stabilize the service first, and schedule follow-up work to prevent recurrence.
About the Role
We’re looking for a Senior Site Reliability Engineer to join our Infrastructure Squad – a lean & senior team where ownership is high and expectations are even higher. This is a deeply hands-on role at the core of a high-traffic system, where you’ll be directly responsible for maintaining reliability, performance, and stability in a fast-paced environment.
You’ll be working on real-time production challenges, handling incidents, managing alerts, and being part of a critical on-call rotation. This role requires resilience, strong decision-making under pressure, and a proactive mindset to continuously improve systems operating at scale.
If you thrive in high-load environments, enjoy solving complex production issues, and want to have a direct impact on systems used by millions – this is the place for you.
Key Responsibilities
Own system reliability by actively monitoring platform health, managing alerts, and responding to incidents in real time
Participate in 24/7 on-call rotations, taking full ownership of production stability in a high-traffic (5–7k RPS) environment
Investigate incidents, perform root cause analysis, and implement long-term fixes to prevent recurrence
Build and continuously improve monitoring, alerting, and observability across the Kubernetes (EKS) ecosystem
Deploy, manage, and optimise infrastructure using Terraform, Helm, and GitOps tools (Flux/ArgoCD)
Drive automation and proactively improve system resilience, reducing manual intervention and recurring issues
Maintain and evolve CI/CD pipelines and infrastructure-as-code practices
Collaborate closely with engineering teams to support deployments and minimise user impact in a live environment
Introduce and integrate new tools and technologies to enhance scalability, reliability, and performance
Handle environment-specific requests and ensure smooth day-to-day platform operations under constant load
Requirements
Strong hands-on experience with Kubernetes (deployment, scaling, troubleshooting) in high-load environments
Experience with GitOps tools such as FluxCD or ArgoCD
Proven experience in incident response, root cause analysis, and postmortems in production systems
Solid experience with AWS, Terraform, Docker, and CI/CD pipelines
Experience with monitoring and observability tools such as Datadog, Prometheus, Grafana, and logging stacks like ELK or CloudWatch
Strong understanding of networking concepts and protocols
Proficiency in at least one scripting language (e.g. Python, Go, Node.js)
Experience working with version control systems (Git)
Familiarity with incident management tools like PagerDuty, Opsgenie, or similar
Ability to operate effectively in a fast-paced, high-pressure environment with strong ownership and accountability
Proactive, resilient mindset with a focus on continuous improvement and system stability
What We Offer
Competitive Salary
Quarterly Bonuses
Unlimited Paid Time Off
Unlimited Paid Sick Leave
Remote & Flexible Working
Private Medical Insurance
Financial Support for Life Events
Professional Development Budget
International Exposure
Regular Company Events
*Benefits may vary depending on location and contractual agreement
Recruitment Process
1. HR Interview (30-45 min)
2. Technical interview (90 min)
4. Final Interview with C-level (60 min)
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