The OpportunityWe're looking for a Staff Security Engineer to join Fullscript's Security Engineering team as a senior technical leader and hands-on builder. This role is ideal for someone who started their career in software engineering and developed deep expertise in security engineering, application security, or product security.
You'll work closely with engineering teams to design and implement security solutions that scale across Fullscript's products and platforms. As a Staff-level engineer, you'll own complex technical initiatives, help shape security strategy, and influence how security is built into the software development lifecycle. You'll be expected to balance hands-on execution with technical leadership, mentoring engineers and helping teams solve security challenges in a way that supports both business objectives and engineering velocity.
We're looking for someone who has owned systems end-to-end; from application development and infrastructure decisions through security design and implementation; Understands how to build secure, scalable solutions in production environments. The ideal candidate is deeply technical, highly collaborative, and energized by solving difficult problems that span multiple teams, systems, and domains.
What you'll do- Lead the design and implementation of security solutions across Fullscript's applications, platforms, and AI-powered systems.
- Partner with engineering teams to embed security throughout the software development lifecycle, including architecture reviews, threat modeling, secure coding practices, and design reviews.
- Drive application security, product security, and vulnerability management initiatives from concept through implementation.
- Own complex security challenges that span multiple teams, balancing technical requirements, business priorities, and engineering constraints to deliver scalable solutions.
- Mentor engineers and security practitioners, raising the bar for secure software development and helping teams make sound security decisions.
- Influence technical strategy and security standards through hands-on engineering, technical leadership, and cross-functional collaboration.
- Stay ahead of emerging threats, security technologies, and AI-specific risks to help shape Fullscript's long-term security posture.
What you bring to the table- 8+ years of software engineering experience designing, building, and operating production systems.
- 3+ years of recent experience in application security, product security, security engineering, or a related security discipline.
- Deep understanding of secure software development, modern application architectures, APIs, and cloud-native environments.
- Experience owning complex technical initiatives from problem definition through delivery, including working across multiple teams and stakeholders.
- Proven ability to influence technical direction, mentor engineers, and drive adoption of security best practices.
- Strong hands-on experience with security tooling, automation, vulnerability management, and security assessments.
- Excellent communication skills, strong technical judgment, and a continuous learning mindset.
Bonus if you have- Experience securing Ruby on Rails, Node.js, JavaScript, GraphQL, or similar application ecosystems.
- Experience with AWS cloud security and cloud-native security controls.
- Experience with threat modeling methodologies such as STRIDE, PASTA, or similar frameworks.
- Experience with vulnerability management, application security posture management, or developer security tooling.
- Familiarity with GitHub, GitLab, Wiz, static analysis tools, secret scanning, or related security platforms.
- Experience conducting penetration testing, security research, or ethical hacking activities.
- Experience protecting healthcare, regulated, or sensitive customer data.
What we can offer you- Remote-first flexibility to work where you work best, with North America (Ottawa, Toronto, or Calgary) preferred for this role.
- Flexible PTO and competitive pay, because work-life balance matters
- RRSP/401k match and stock options to invest in your future
- Premium benefits package with customizable coverage, paramedical services, and an HSA.
- Fullscript discounts to save on high-quality wellness products
- Continuous learning opportunities to grow your skills and career
Fullscript shares salary ranges to support transparency and help candidates make informed decisions. The range shown reflects base salary only and does not include stock options, wellness stipends, or other benefits that are part of Fullscript's total rewards package.
Final compensation depends on experience, skills, and location. We review pay regularly to stay aligned with market data and internal equity. Benefits and total rewards may vary by region.
