APAC Senior SRE: Payments Platform Reliability

Reap; Hong Kong; On-site; HKD 900,000 - 1,500,000; Full time

Job summary

Reap is building a Site Reliability Engineering practice and this role is central to it. You will lead reliability of a payments platform and help scale the infrastructure while keeping the lights on as the platform evolves.

This is a deeply hands-on senior contributor role; you will set standards, drive automation, and mentor engineers across time zones. You will work across AWS regions, IaC, observability, and PCI DSS compliance to deliver resilient, scalable systems that enable product teams.

Qualifications

• Real SRE practice with defined SLOs and incident postmortems.
• Strong Linux and systems fundamentals (internals, networking, admin).
• Deep Terraform with large-scale IaC migration.
• Strong AWS across multi-account and multi-region estates.
• Containers and orchestration experience (ECS/Fargate, Kubernetes).
• Serverless and event-driven systems (Lambda, SQS, EventBridge).
• GitOps and CI/CD with practical adoption.
• Observability and incident management experience.
• Programming in Python, Go or Bash for automation.

Responsibilities

• Define what reliability means here: set SLIs and SLOs with product and engineering teams, introduce error budgets, and make 'ship or stabilise?' a matter of arithmetic rather than argument.
• Take part in our on-call rotation, and help build the incident response and blameless postmortem practice around it.
• Drive Reap to full Infrastructure as Code coverage: bring the remaining legacy infrastructure under IaC, and get to no manual provisioning, no drift, and every resource defined, versioned and reproducible.
• Consolidate our Terraform estate into a coherent, well-structured codebase with module standards, governance and automated drift detection.
• Automate account provisioning and environment setup so that new regions and services can be stood up repeatably and consistently.
• Build the golden paths and self-service interfaces that let product and engineering teams provision, deploy and observe without filing a ticket, with escape hatches for the cases they do not cover.
• Design and implement an ephemeral environment platform so any developer, and any coding agent, can get an isolated production‑like environment on demand and have it cleaned up automatically.
• Implement industry-standard observability across logging, metrics and distributed tracing, with alerting that is actionable and trusted.
• Own cloud operations for PCI DSS and regulated financial systems — uptime, failover, capacity, disaster recovery and incident response.
• Embed security into the infrastructure layer: secrets management, least-privilege IAM, network segmentation and compliance controls.
• Build infrastructure that lets AI assistants and agents operate safely: sane blast radius, strong isolation, auditable actions.
• Partner with product and engineering teams so that reliability work is negotiated rather than imposed — we treat the platform as a product and our engineering teams as its customers.

Skills

SRE practice

Linux fundamentals

Terraform

AWS multi-account

Kubernetes

CI/CD

Python/Go/Bash

IaC migration

Incident response

On-call experience

Tools

Terraform

CloudFormation

GitHub Actions

Argo CD

CloudWatch

Job description

Reap is building a Site Reliability Engineering practice and this role is central to it. You will lead reliability of a payments platform and help scale the infrastructure while keeping the lights on as the platform evolves.

This is a deeply hands-on senior contributor role; you will set standards, drive automation, and mentor engineers across time zones. You will work across AWS regions, IaC, observability, and PCI DSS compliance to deliver resilient, scalable systems that enable product teams.