Security Engineer III - Security Operations

Primer.io · United Kingdommid

In short

▸Ingeniero de Seguridad enfocado en detección y respuesta de amenazas en entorno cloud.
▸Diseñas, ajustas y automatizas reglas de detección en SIEM (Elastic) y AWS, con respuestas automáticas y gestión de incidencias.
▸Destaca el enfoque en la autonomía y el impacto directo en la seguridad de una plataforma de pagos global.

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What they ask for

✓Experiencia práctica construyendo y ajustando detecciones en SIEM (Elastic preferido)
✓Conocimiento de AWS y respuesta a amenazas nativas en la nube
✓Habilidades en Python para automatización y scripting
✓Experiencia con Terraform o IaC
✓Capacidad comprobada para investigar y resolver incidentes de seguridad
✓Comunicación escrita clara y estructurada

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ElasticAWSPythonZapierTinesTerraformMITRE ATT&CKSIEMSOC 2PCI DSS

Who should you write to at Primer.io?

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An Introduction to Primer Primer is the unified infrastructure for global payments. We give finance and payments teams the visibility and control to reduce complexity, improve performance, and capture more revenue - all from a single platform. Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer the world's best companies rely on. Watch our showcase > Read up on our $100m Series C Learn more about our culture > Primer is looking for a Security Engineer to help us detect, investigate, and respond to threats across our cloud infrastructure. You'll take ownership of a meaningful slice of our detection and response capability — tuning what our SIEM catches, building the automation that speeds up how we react, and being a first responder when something looks wrong. What you'll be doing Plan and deliver detection and response work end-to-end — from a new detection rule to a fully automated response — within your area of ownership. Build, tune and maintain detections across our SIEM (Elastic) and AWS environment, closing gaps that existing coverage misses. Own an investigation queue: triage, investigate, escalate and resolve security incidents, and write up findings clearly enough to stand on their own. Build runbooks and automations (Python, and no-code tools like Zapier or Tines) to cut manual work out of triage and response. Make and document risk decisions in your area, and know when to pull in others. g. SOC 2, PCI DSS). Use Terraform and Python to build and maintain the infrastructure behind your detections and tooling. Join our on-call rotation for incident response and monitoring. Nice to have Experience with no-code security automation / SOAR-style tooling Exposure to compliance frameworks like PCI DSS, SOC 2 or ISO 27001 Background in fintech, payments or another regulated industry ✅ A typical interview process An initial intro call with a Talent Partner An interview with the Hiring Manager Challenge Stage - Contextualised to the role A final, values-alignment interview What's the culture like at Primer? We're building a culture where people can do their best work and be proud of the impact they have. You'll be working with people who are mission-driven, smart, and reflective, and who are genuinely invested in building exceptional products and delivering success for our merchants. We work remotely, and have done since day one. We believe that building a successful, profitable company goes beyond proximity. We invest in our relationships through great remote working practices and thoughtfully designed face-to-face time, including workations, our annual company retreat, and access to co-working spaces across most major cities. The work is challenging. Scaleups are a challenge, and building category-defining products is a challenge. But there's a meaningful difference between a challenge and a struggle. At Primer, the right challenge comes with the right support: strong onboarding, a collaborative environment, and a team that is genuinely invested in your success. It's never something you face alone.

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