# Application Security Engineer

**Company**: Fin
**Location**: Dublin, Ireland
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/intercom/jobs/8018140?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_e38a6ee8-741

## Description

Fin is transforming customer service through AI, helping businesses deliver fast, accurate, and reliable support at scale. The company's Security Engineering team is responsible for building and operating critical security services, customer-facing security features, and partnering with engineering teams to ensure secure development.

The Application Security Engineer will own and engineer tier-zero security capabilities, design and build customer-facing security features, and partner with engineering teams to build secure products and services. Responsibilities include:

- Designing, building, and evolving customer-facing security features, including authentication, SAML/SSO, permissions systems, audit and activity logging, and malicious URL scanning

- Partnering with engineering teams throughout the software development lifecycle to build secure products and services

- Performing architecture reviews, threat modelling exercises, and security assessments for new features and systems

- Building security tooling, automation, and developer-facing building blocks that make secure development easier and more scalable

- Contributing to secure development standards, guidance, and best practices across Fin

- Leading application security initiatives across the software development lifecycle, helping teams identify and address security risks early

- Participating in a shared on-call rotation and leading security incident response, investigation, and remediation efforts

- Driving security initiatives from problem definition through design, implementation, and measurable outcomes

- Partnering with teams building AI-powered products to assess and mitigate emerging security risks

- Helping shape Fin's AI-first approach to security, including AI-powered detection, red-team automation, continuous monitoring, and emerging defensive capabilities

The ideal candidate will have:

- Proven application security, product security, or security engineering experience within a SaaS environment

- Strong software engineering skills with experience designing, building, and operating production systems

- Deep understanding of modern application security threats, secure software development practices, and threat modelling

- Experience designing, building, or securing authentication, authorization, identity, or enterprise security capabilities

- Experience conducting architecture reviews and security assessments for complex systems

- Hands-on security incident response experience, including leading investigations and remediation efforts

- Strong programming skills and experience building tools, automation, or developer-focused solutions

Benefits include:

- Competitive salary and equity in a fast-growing start-up

- Lunch served every weekday, plus snacks and a fully stocked kitchen

- Regular compensation reviews

- Unlimited access to Claude Code and best-in-class AI tools

- Pension scheme and match up to 4%

- Life assurance, comprehensive health and dental insurance, and flexible paid time off policy

## Skills

### Required
- application security
- product security
- security engineering
- software engineering
- threat modelling
- secure software development
- authentication
- authorization
- identity
- enterprise security
- security incident response
- programming

### Nice to have
- AI-powered detection
- red-team automation
- continuous monitoring
- emerging defensive capabilities
- cloud security
- infrastructure security
- distributed systems
- securing AI-powered products
- large language models
- agentic systems
- retrieval-based architectures
- AI tool integrations

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Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/intercom/jobs/8018140?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)