Senior Backend Engineer - Agentic Pentest

OX Security; Canada; Hybrid; CAD 110,000 - 150,000; Full time

Benefits offered by this job

Health Coverage

Unlimited PTO

Birthday gifts

Job summary

OX Security is seeking a Senior Backend Engineer to design and implement scalable backend systems and APIs. You will collaborate across Product, Frontend, and other engineering teams to ensure robust architecture and secure, high-performance services.

With 5+ years of backend experience, you will lead code reviews, mentor junior engineers, and drive improvements in system reliability. Familiarity with AI-assisted coding and cloud-native microservices is a plus.

Qualifications

• Backend-focused role building scalable systems.
• Experience designing APIs and services for production.
• Mentor junior engineers and participate in code reviews.

Responsibilities

• Design and implement scalable backend systems and APIs.
• Collaborate with Product, Frontend, and other engineering teams on architecture.
• Optimize performance, scalability, and security of applications.
• Troubleshoot and resolve production issues with minimal downtime.

Skills

Backend development

Problem-solving

Code reviews

Mentoring

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

SQL

NoSQL

Cloud platforms (AWS/GCP)

Microservices

Job description

## Senior Backend Engineer - Agentic PentestCanada · Full-time**About the Position**Ox Security secures the AI-driven SDLC from prompt to production. We eliminate critical, real-time risks from AI code generation through cloud runtime by doing what conventional tools can’t: unifying development and cloud context to stop vulnerabilities right at the source. At OX, we’re building the future of cyber security for the AI era. If you’re looking to work on disruptive technology with an amazing team, you belong here.We’re growing fast and looking for a **Senior Backend Engineer** to join our Engineering team and help build the infrastructure that powers our platform at scale.This is a high-impact role where you’ll work alongside top-tier engineers, designing and building secure, high-performance systems in a fast-paced environment. If you enjoy solving complex technical challenges and want your work to have real impact - we’d love to meet you.**What You’ll Be Doing*** Design and implement scalable backend systems and APIs* Collaborate with Product, Frontend, and other engineering teams on system architecture and requirements* Optimize performance, scalability, and security of applications* Troubleshoot and resolve production issues with minimal downtime* Lead code reviews and promote best engineering practices* Mentor and support junior engineers* Continuously improve system design, reliability, and development processes**What We’re Looking For*** Bachelor’s degree in Computer Science or a related field* 5+ years of experience in backend development* **AI-First Approach** – Active and proficient use of AI tools (e.g., Copilot, LLMs) to streamline coding practices, accelerate learning curves, and optimize workflows.* Strong experience building scalable, production-grade systems* Proficiency in Node.js* Experience with SQL and NoSQL databases* Familiarity with cloud platforms and microservices architecture* Strong problem-solving skills and attention to detail* Passion for writing clean, maintainable, and efficient code**Bonus Points for :*** Experience in the cybersecurity, SaaS, or Cloud Security domain.* Hands-on experience with modern cloud environments (AWS/GCP), Docker, and Kubernetes.**Benefits Package** (via Vensure)We partner with Vensure to provide top-tier benefits for our Canada-based team members:* **Comprehensive Health Coverage:** Medical, Dental, and Vision plans to keep you and your family healthy.* **Unlimited Paid Time Off (PTO):** We offer unlimited vacation because we trust you to take time when you need it and to manage your time effectively. We value work-life balance and want you to recharge.* **Gifts** on your birthday & anniversary & Holidays.