About PayFit
Do you want to help shape what the future of work will look like and how it will best embrace our life's aspirations? If this sounds like a journey you want to embark on, we may have the right role for you PayFit is an intuitive software-as-a-service payroll and HRIS solution designed specifically for SMBs. Since 2015, we have set ourselves a mission to simplify payroll for SMBs and enable employers and employees to grow together. We are a European company operating from three main countries (France, Spain, and the UK) where we support over 20,000 clients.
Location
You can work at this role from any location in France or Spain, with occasional visits to the Paris office.
Position Overview
We're looking for a Senior Application Security Engineer to join our Application Security team, part of the Engineering Platform tribe. You'll be the AppSec engineer closest to our product engineering teams, not the gatekeeper at the end of the pipeline, but the partner who helps developers ship secure software by default. You'll drive a meaningful shift-left across the SDLC,



mentor the rest of the security team, and bring an offensive mindset to how we test our own applications, including how we leverage AI to pentest them.
This is a senior individual contributor role with strong influence. You'll work alongside another Security Engineer and our Compliance Analysts, and partner daily with infrastructure, platform, and product engineering teams to keep PayFit secure as we scale across Europe.
Your Mission
Shift Security Left Across the SDLC
Embed security into how PayFit builds software. Partner with product teams from design to deployment; threat model new features, review architecture decisions, perform code reviews, and help developers internalize secure-by-default patterns. Make security a multiplier, not a bottleneck.
Drive Offensive Testing of Our Applications, Including with AI
Run internal application pentests with an attacker mindset and explore how AI can be

📌 Senior Application Security Engineer (España)
🏢 Payfit
📍 España