# Senior Engineer, Application Security at Lightspeedhq

- Company: Lightspeedhq
- Status: Open
- Workplace: Remote
- Location: Calgary · Remote
- Level: Senior
- Discipline: Security
- Employment: Full-time
- Posted: 2026-10-27
- Skills: Technology, Information Security
- Apply: https://jobs.ashbyhq.com/lightspeedhq/7191ccbb-e09f-4e18-b5d6-fccf49322142

## Description

Hi there! Thanks for stopping by 👋

Are you actively looking for a new opportunity? Or just checking the market? Well… you might just be in the right place!

As a Senior Application Security Engineer, you will serve as a foundational anchor on the AppSec team, leading our strategic shift hard-left toward developer-embedded security and Secure by Design operationalization. You will design, build, and scale state-of-the-art AppSec practices while collaborating closely with Vulnerability Operations to streamline vulnerability triage and remediation. Leveraging cutting-edge AI-assisted workflows and modern automation, you will eliminate friction for developers, burn down legacy risks, and fortify software lifecycles against sophisticated, emerging threat vectors.

What you’ll be doing:

 - Operationalize Secure by Design principles end-to-end, embedding seamless security controls directly into feature designs, pull requests, IaC checks, and daily engineering workflows.

 - Architect high-impact feature and infrastructure threat models, validating and enhancing advanced AI-generated threat modeling pipelines.

 - Configure, fine-tune, and orchestrate SAST, DAST, SCA, Secrets, and LLM scanner rulesets to eliminate false positives and streamline Vulnerability Operations.

 - Build and stabilize new AppSec processes and ways of working while ensuring legacy security controls remain fully active.

 - Pioneer AI-driven automation to dramatically accelerate vulnerability triage and remediation, systematically burning down security backlogs.

 - Provide hands-on technical fix guidance

More Lightspeedhq roles: https://deviantjobs.com/companies/lightspeedhq