Senior Application Security Engineer — FinTech Security Leader

OANDA Poland sp. z o.o.; Kraków; On-site; PLN 180,000 - 300,000; Full time

Job summary

OANDA Poland sp. z o.o. seeks a Senior Application Security Engineer to push security left across the product ecosystem.

You will collaborate with cross-functional engineering teams and demonstrate secure design principles in hands-on coding engagements. Operating across a modern multi-language stack and cloud environments, you will tackle security challenges at every layer, automate DevSecOps pipelines, and pioneer AI security tooling to protect customers and data.

Qualifications

• Lead security practices and threat modeling across projects.
• Hands-on coding across a multi-language stack to demonstrate secure design principles.
• Experience with DevSecOps and secure design principles.
• Familiarity with cloud security and infrastructure as code.

Responsibilities

• Lead design reviews and establish secure coding practices.
• Build security-critical components and fix vulnerabilities across languages (JS, Go, Python, C++, Java).
• Automate DevSecOps pipelines and security tooling.
• Lead threat modeling exercises to identify risks in development.
• Pioneer AI security practices and secure AI development.

Skills

Security leadership

Threat modeling

Secure coding

Multi-language stack

DevSecOps

Cloud security

AI security tooling

Education

Bachelor's in Computer Science

Tools

Terraform

Static code analysis

Fuzzing

CI/CD security tooling

PKI & cryptography

Job description

OANDA Poland sp. z o.o. seeks a Senior Application Security Engineer to push security left across the product ecosystem.

You will collaborate with cross-functional engineering teams and demonstrate secure design principles in hands-on coding engagements. Operating across a modern multi-language stack and cloud environments, you will tackle security challenges at every layer, automate DevSecOps pipelines, and pioneer AI security tooling to protect customers and data.