Job Description

Job Summary

As a Senior Security Engineer on the Defensive Platform Builder track you will act as a technical authority for secure software design and cloud native infrastructure defence across Flywire's global footprint. You will bring an automation first mindset to a high velocity fintech workplace, partnering with software engineering and SRE squads to embed security controls directly into our public cloud and GitLab CI/CD pipelines using AI workflows, so that our global payment systems stay secure by design and resilient in production.

Responsibilities and Tasks:

1. Secure SDLC & CI/CD Automation Ownership

- Own, design and drive the end to end integration of automated security requirements and validation tooling into high velocity engineering pipelines.

- Build custom internal tooling, wrappers and automated controls to replace manual security checkpoints, protecting development velocity while removing friction.

2. Cloud & Infrastructure Hardening

- Partner directly with SRE and DevOps teams to establish secure public cloud architecture blueprints, manage Infrastructure as Code security scanning (for example Terraform) and enforce strict network isolation.





- Architect and maintain cloud Identity and Access Management controls and enforce Zero Trust boundaries within containerised environments such as Docker and Kubernetes.

3. AI Driven Security & Application Reviews

- Design, prompt engineer and deploy automated security review workflows using LLM APIs to run real time code analysis and give context aware feedback on pull requests.

- Establish and enforce technical controls that protect internal and external generative AI features against LLM specific risks, including prompt injection, insecure output handling, model inversion and data poisoning.

- Run deep dive source code audits and API security reviews that go beyond automated scanning, surfacing complex logic flaws before they reach production.

4. Cross Functional Collaboration & Technical Mentorship

- Embed within software development and infrastructure sprint planning from the inception phase so that security is built in from day one rather than bolted on.

- Provide expert level, actionable code and configuration guidance directly to software and SRE engineers.

- Mentor junior security, software and SRE engineers to raise technical resilience across the wider organisation.

📌 Senior Security Engineer (Defensive) (Bengaluru)
🏢 Flywire
📍 Bengaluru