Security Engineer

Thunes; San Francisco (CA); Hybrid; USD 130,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Thunes is seeking a Security Engineer to bridge Infrastructure Security and Application Security within a hybrid US-focused fintech platform. You will help build automated security guardrails and ensure resilient, compliant systems across cloud, code, and deployments.

You will own security across the full lifecycle, from securing AWS/GCP infrastructure to code reviews, architecture risk assessments, and incident response.

Qualifications

• Bachelor's degree in Computer Science or related field; professional equivalent accepted.
• Deep experience in both Infrastructure Security and Application Security required.
• Experience building security guardrails within CI/CD tooling (GitHub Actions, GitLab CI, Jenkins).
• Proficiency with enterprise vulnerability management platforms and automated dependency scanning tools.

Responsibilities

• Design, build, and maintain automation to integrate security testing into deployment pipelines.
• Own security across the full lifecycle from cloud infrastructure to code reviews and architecture risk assessments.
• Manage vulnerability detection, prioritization, and tracking across the environment.
• Build automated workflows for vulnerability reporting, triage, and remediation with AI-powered tooling where possible.
• Monitor security controls to meet regulatory requirements including SOC-2 and PCI audits.
• Support incident response as part of the security team.

Skills

Pipeline security

Hybrid security

Vulnerability tooling

Automation coding

Fintech compliance

Education

Bachelor's degree in CS

Tools

GitHub Actions

GitLab CI

Jenkins

Job description

Security Engineer Overview

Thunes Financial Services is hiring a Security Engineer to be the architect of trust for our fintech platform. We are looking for a hybrid specialist who can bridge the gap between Infrastructure Security and Application Security, ensuring our systems are as resilient as they are compliant. This role will play a critical part in maintaining our regulatory compliance posture while building automated, scalable security guardrails. This role reports to the VP of Engineering.

The Role

As a Security Engineer, you will be responsible for security across the full lifecycle of our fintech platform. This hybrid specialist role requires deep engagement with both infrastructure and application security, focusing heavily on automation and regulatory compliance within a high-stakes, regulated environment.

Day-to-day:

• CI/CD Security Integration: Design, build, and maintain automation to integrate security testing (SAST/DAST/SCA) directly into our deployment pipelines. You'll ensure that security is a "paved road" for developers, not a bottleneck.
• Full-Stack Security: Own security across the lifecycle—from securing our cloud infrastructure (AWS/GCP) to performing code reviews and architectural risk assessments.
• Vulnerability Management: Manage our detection stack using modern vulnerability scanning and dependency management tools to identify, prioritize, and track risks across the environment.
• Security Automation: Build and maintain automated workflows for vulnerability reporting, triage, and remediation. We want someone who leverages AI-powered agentic coding tools or similar automation to eliminate manual toil and accelerate response times.
• Compliance Engineering: Monitor our technical security controls to ensure that they are operating effectively throughout the year to meet the rigorous cybersecurity compliance requirements to support regulatory exams as well as SOC-2 and PCI audits.
• Incident Response: Serve as a key member of our security response team, helping to investigate and mitigate potential threats.

Collaborate with:

• Product, data engineering, front-end engineering, tech ops, compliance, and legal

Tech stack:

Cloud (AWS/GCP, K8s), CI/CD tools (GitHub Actions, GitLab CI, or Jenkins), Python, Go, or Bash, SAST/DAST/SCA, enterprise vulnerability management platforms, automated dependency scanning solutions.

Success in this role means:

• Ensuring systems are resilient and compliant.
• Maintaining our regulatory compliance posture.
• Building automated, scalable security guardrails.
• Having a direct impact on the security strategy.

Travel:

• Some travel required for periodic team offsites.

Knowledge Required

Qualifications

A Bachelor's degree in Computer Science or a related field, but similar professional experience is equally valued.

Experience

A proven track record of deep experience in both Infrastructure Security and Application Security is required.

Technical skills:

• Pipeline Proficiency: Hands-on experience building security guardrails within CI/CD tools (e.g., GitHub Actions, GitLab CI, or Jenkins).
• Hybrid Expertise: Deep experience in both Infrastructure Security (Cloud/K8s) and AppSec (OWASP Top 10, Secure SDLC).
• Tooling Experience: Proven proficiency with enterprise vulnerability management platforms and automated dependency scanning solutions.
• Automation Mindset: You don't just find bugs; you write code (Python, Go, or Bash) to handle them. Experience using AI-driven automation or agentic tools to streamline security workflows is required.
• Fintech Fluency: You understand the high-stakes nature of working in a regulated environment and can translate compliance requirements into technical reality.

Leadership and collaboration:

• Clear, effective communication of trade-offs to non-technical stakeholders
• History of collaboration with engineers and others

Nice to have but in no way required:

• Certifications such as CISSP
• Prior experience in startups, especially Fintech