Senior Site Reliability Engineer

Simple Life App; España; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Stock options

Flexible hours

Open-office, remote and hybrid options

SIMPLE subscription

Job summary

Simple Life is seeking a Senior SRE to join the Platform team, owning AWS infrastructure, the Kubernetes platform, and internal tooling relied on by the engineering org.

You will drive automation, IaC with Terraform and Terramate, and oversee CI/CD pipelines on EKS, ArgoCD, Atlantis, and Flux. Strong Go skills and on-call experience are essential, with excellent English communication across teams.

Qualifications

• Extensive hands-on experience operating production systems on AWS and Kubernetes.
• Deep knowledge of Terraform-based IaC and GitOps workflows.
• Proven ability to diagnose complex incidents with root-cause focus.
• Strong Go programming or willingness to learn and build tooling.
• Excellent English communication across engineering, product and security.
• Experience with on-call ownership and incident response.

Responsibilities

• Own AWS infrastructure and Kubernetes platform for the production environment.
• Develop and maintain IaC, CI/CD pipelines, and tooling (Go-based).
• Manage on-call rotations, incident response, and root-cause analysis.
• Collaborate across teams to improve reliability, security, and performance.

Skills

AWS

Kubernetes

Go

Terraform

GitOps

Observability

Tools

ArgoCD

Atlantis

Flux

Terramate

Cilium

Istio

Grafana

Job description

Simple Life is the #1 AI-powered health coaching app for adults who want to lose weight and enjoy a healthier lifestyle—without the stress or extremes. Our mission is to empower people to feel their best every day. By challenging traditional, restrictive approaches, Simple offers a more sustainable method grounded in ease, personalization, and real-life support.

Simple has had over 17 million downloads and more than 300,000 5-star reviews, having helped millions lose weight successfully and sustainably. Simple has earned recognition as Best Virtual Coach and one of the Top 100 AI companies — all thanks to a dedicated global team driving real impact.

With SIMPLE as a partner in their pocket, users feel cared for and empowered to embrace — and stick to — new healthy habits. To learn more, visit simple.life.

Simple is looking for a Senior SRE to join our Platform team responsible for the AWS infrastructure, the Kubernetes platform and the internal tooling that the rest of engineering relies on.

Push the pace of innovation and build a future of a healthier world with us!

About The Role

This is an operations-led position. You will be working day to day on AWS, our infrastructure-as-code, our CI/CD setup, observability, and the on-call rotation.

A meaningful part of the work is automation: when we find ourselves doing the same thing twice, we usually invest in tooling rather than writing another runbook. Most of that tooling is written in Go.

To give a sense of the environment: infrastructure is defined with Terraform and Terramate, with Atlantis running plan and apply on pull requests. Workloads run on EKS with Karpenter, Cilium and Istio, deployed through ArgoCD. Observability is built on Grafana, Loki, Tempo, and Prometheus compatible metrics.

We’re Looking For

• The most important quality for this role is how you handle problems that are not yet understood.
• Production incidents rarely present cleanly: logs can be incomplete, metrics can mislead, and the first plausible theory is often wrong.
• The right candidate stays focused under that kind of pressure, works through ambiguity in a structured way, and arrives at a real root cause rather than a convenient one.
• Strong investigation, debugging, and problem-solving instincts are essential.
• We also expect candidates to learn quickly. The stack and the company both move, and you will regularly be the first person on the team to take on something new.
• Several years of hands‑on experience operating production systems on AWS and Kubernetes, including genuine on‑call ownership.
• A solid working knowledge of AWS fundamentals, including VPC, IAM, EKS, and RDS.
• Practical experience with Terraform and a GitOps-style delivery workflow (ArgoCD, Atlantis, Flux, or similar).
• Comfort writing code, with some prior experience in Go or a willingness to pick it up (writing small services and tools is a regular part of the work).
• Strong written and spoken English, and the communication skills to drive design discussions across engineering, product and security.
• We're flexible on some locations as long as your working hours overlap with European time zones

Perks And Benefits

• Open-minded teams, a welcoming and inclusive company culture, plus the opportunity to make a real difference with a game-changing health tech product.
• A competitive salary package based on your unique expertise, skillset, and impact on the product plus stock options.
• In-office, remote and hybrid work opportunities.
• The equipment whatever you need to be happy and productive.
• A premium SIMPLE subscription.
• 21 days annual leave, plus bank holidays
• Flexible hours. We focus on your results, not how long you spend at your desk.