Security Engineer, Lead

ARQ; São Paulo; Presencial; BRL 300 000 - 480 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Stock options

Discretionary performance bonus

Latest tools and technology

World-class team

Resumo da oferta

ARQ is seeking its first Security Engineer in Brazil to lay the foundation for security in the region and partner with our global security team. You will shape how security is practiced locally from day one.

The role spans Application Security, Security Operations, and Governance/Risk/Compliance, requiring cross-functional work across at least two areas, and you will have real autonomy in defining what good security looks like.

Qualificações

• 7+ years in information security building or maturing a security function.
• Hands-on cloud security architecture design for AWS and Kubernetes.
• Proven experience driving application security programs and CI/CD hardening.
• Ability to set guardrails for AI/agentic tooling and MR workflows.
• Strong detection engineering background and leadership in security reviews.

Responsabilidades

• Drive application security roadmap and secure code review practices.
• Define guardrails for prompts and AI workflows; advise on LLMs/MCP servers.
• Set direction for detection engineering, alert pipelines, and automated response.
• Own IR readiness; design playbooks and lead tabletop exercises.
• Lead cloud security assessments across AWS and Kubernetes.
• Own vendor security assessment framework and due diligence.
• Mentor mid and senior engineers in detection logic and playbooks.

Conhecimentos

Security strategy

Cloud security (AWS, Kubernetes)

Application security

Security operations

Governance/Risk/Compliance

Incident response

Leadership without management

Threat modelling

CI/CD security

Communication to leadership

Ferramentas

Datadog SIEM

CrowdStrike

Cloudflare

EDR/XDR tooling

Google Workspace

Okta/Cloudflare Access

SSO/SCIM

Descrição da oferta de emprego

What We're Looking For

You'll be ARQ's first Security Engineer based in Brazil – it's the chance to lay the foundation for how we do security in the region and shape how that function grows from here. You'll work closely with our global security team but have real autonomy in deciding what "good" looks like locally, from day one.

We're looking for someone who enjoys a multidisciplinary role. Security at ARQ spans Application Security, Security Operations, and Governance/Risk/Compliance, and we need someone comfortable moving across at least two of these three areas – because in a founding role, there's no one else to hand off the parts that don't fit your specialty.

What you'll do

• Drive the application security roadmap: threat modelling standards, secure code review practices, API security testing strategy, and security pipeline architecture
• Define the company's approach to securing AI/agentic workflows – setting guardrails for prompts, destructive actions, and data exposure, and advising other teams building with LLMs/MCP servers
• Set the technical direction for detection engineering, alert pipelines, and automated response across the security stack (Datadog SIEM, CrowdStrike, Cloudflare), and raise the bar on how the team designs and reviews detections
• Own incident response readiness at a program level: design IR playbooks, lead tabletop exercises, and act as technical lead during major incidents
• Set the standard and approach for cloud security assessments across AWS and Kubernetes, reviewing findings from other engineers and tackling the most complex environments directly
• Own the vendor security assessment framework itself: continuously improving the due diligence process and handling the highest-risk vendor reviews
• Act as a technical mentor to mid and senior engineers, reviewing their detection logic, assessments, and playbooks without formal management responsibilities

What you'll need

• 7+ years in information security, including demonstrated experience building or substantially maturing a security function or program from the ground up
• Deep, hands-on expertise in cloud infrastructure security (AWS, Kubernetes), able to architect controls
• Proven experience driving application security programs: threat modelling frameworks, secure code review standards, CI/CD pipeline hardening, and API security testing strategy
• Demonstrated ability to define practical security guardrails for AI/agentic tooling – you understand the risks of LLM integrations, MCP servers, and automated workflows at an architectural level
• Strong detection engineering background – you've designed detection strategy and mentored others in writing rules
• Deep experience with endpoint security tooling (EDR/XDR) and identity & access management architecture in a SaaS-heavy environment (Google Workspace, Okta/Cloudflare Access, SSO/SCIM)
• Experience designing or significantly evolving a vendor security assessment/third-party due diligence program
• Excellent written and verbal communication; comfortable representing security decisions to leadership and cross-functional stakeholders
• Business fluent in English

Benefits

• Competitive salary and benefits
• Stock options, so you own part of what you build
• Discretionary performance bonus
• The latest tools and technology
• A world-class team that will challenge and grow your skills
• The opportunity to help build the best fintech app in Latin America
• Office Policy: 3-4 days a week in-office