Staff Site Reliability Engineer (Site Experience)

Tensec; Dublin; On-site; EUR 85,000 - 120,000; Full time

Benefits offered by this job

Global benefit programs

Family Planning Support

Mental Health & Coaching Benefits

Private Medical, Dental, and Vision Benefits

Flexible Vacation & Paid Volunteer Time Off

Generous Paid Parental Leave

Job summary

Tensec is looking for a Staff Site Reliability Engineer to spearhead reliability engineering initiatives for critical user-facing systems at internet scale. This role focuses on enhancing availability, latency, scalability, and operational excellence across the platform.

The ideal candidate will have over 8 years of experience in Site Reliability or Infrastructure Engineering, strong collaboration skills, and expertise in distributed systems, with a focus on programming in Go or Python. The position also offers numerous benefits, including flexible vacation and family planning support.

Qualifications

• 8+ years of experience in Site Reliability Engineering or related roles.
• Strong experience supporting high traffic, user-facing production environments.
• Deep understanding of distributed systems, cloud-native architectures, and networking.

Responsibilities

• Lead Reliability Engineering for User Experience to ensure performance and scalability.
• Architect systems for high availability and manage capacity planning.
• Drive automation to eliminate operational work and improve incident response.

Skills

Site Reliability Engineering

Infrastructure Engineering

Distributed systems

Collaboration skills

Programming in Go or Python

Tools

Kubernetes

Prometheus

Grafana

Job description

As Reddit continues to scale globally, reliability and performance are more critical than ever. The Site Experience SRE team sits at the intersection of infrastructure, product engineering, and user experience – ensuring that every interaction across web, mobile, APIs, feeds, media delivery, and real‐time systems is fast, reliable, and resilient.

We are looking for a Staff Site Reliability Engineer to lead reliability engineering initiatives for critical user‑facing systems at internet scale. In this role, you will partner closely with product and infrastructure teams to improve availability, latency, scalability, and operational excellence across Reddit’s most business‑critical experiences.

This is a highly technical leadership role for someone who thrives in large‑scale distributed systems, enjoys solving complex reliability challenges, and can influence engineering culture across the organization.

What you’ll do:

• Lead Reliability Engineering for User Experience
  • Drive reliability, scalability, and operational excellence for critical user‑facing systems and services. Improve performance and resiliency across APIs, content delivery, feed generation, search, messaging, and real‑time experiences.
• Architect for Scale
  • Partner with product and infrastructure engineering teams to design systems that remain highly available and performant under massive global load. Guide architectural decisions around failover, redundancy, graceful degradation, traffic management, and capacity planning.
• Reduce Operational Risk
  • Identify systemic risks and reliability bottlenecks across services, dependencies, deployments, and infrastructure. Build proactive mitigation strategies and drive engineering improvements that reduce incidents and improve service health.
• Drive Automation
  • Eliminate repetitive operational work through automation and tooling. Build systems that improve deployment safety, incident response, remediation workflows, and reliability guardrails.
• Incident Management
  • Lead complex incident response efforts across engineering teams. Drive blameless post‑mortems, identify root causes, and ensure sustainable long‑term fixes are implemented.

Influence Engineering Standards

• Define and champion best practices around reliability engineering, SLIs/SLOs, capacity management, release engineering, and operational maturity across the company.

Mentor and Multiply Impact

• Provide technical leadership and mentorship to engineers across SRE and software engineering teams. Help shape reliability culture and raise the operational excellence bar across the organization.

What We’re Looking For

• 8+ years of experience in Site Reliability Engineering, Infrastructure Engineering, or related roles operating large‑scale distributed systems.
• Strong collaboration and communication skills with the ability to influence technical direction across teams.
• Strong experience supporting high traffic, user‑facing production environments.
• Deep understanding of one or more: distributed systems, networking, Linux systems, cloud‑native architectures.
• Experience designing highly available systems with strong operational and reliability practices.
• Strong programming skills in languages such as Go, Python, or similar.
• Strong understanding of observability systems including metrics, logging, tracing, and alerting.
• Experience improving reliability through SLOs, automation, incident management, and performance optimization.
• Demonstrated ability to troubleshoot complex issues across applications, infrastructure, networking, and services.

Nice to Have

• Experience operating systems at internet scale traffic volumes.
• Experience with Kubernetes, containers, cloud infrastructure, and modern deployment platforms.
• Familiarity with technologies such as Prometheus, Grafana, OpenTelemetry, Envoy, Kafka, ClickHouse, Cassandra, Redis, or similar distributed infrastructure technologies.
• Experience with CDN optimization, edge reliability, traffic engineering, or global infrastructure.
• Contributions to open source software or participation in technical communities.
• Experience leading large scale incident response and operational transformation initiatives.

Why Join Reddit?

You’ll help shape the reliability and performance of one of the internet’s largest platforms, influencing experiences used by millions of people every day. This is an opportunity to solve deeply complex engineering problems at massive scale while helping define the future of reliability engineering for a modern consumer platform.

Benefits

• Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support
• Family Planning Support
• Gender‑Affirming Care
• Mental Health & Coaching Benefits
• Private Medical, Dental, and Vision Benefits
• Personal Retirement Savings Account with matching contribution
• Cycle to Work and Tax Saver schemes
• Flexible Vacation & Paid Volunteer Time Off
• Generous Paid Parental Leave

Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.