Senior Security Incident Response Developer

Build something people loveWealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $169 billion in assets under administration. The company was founded in 2014 by a team of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada.

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About the roleWe are seeking an experienced and hands-on security professional to join our Detection & Response team as a Senior Incident Response Developer. Reporting to the Manager of Detection & Response, this is a critical, technical role focused on strengthening our ability to respond to and recover from security threats. You will be a key player in investigating complex security incidents, building scalable response processes, and taking command when it matters most.

The ideal candidate has a deep, technical background in hands-on incident response and a keen eye for where automation can improve and scale our capabilities. You are a natural problem-solver who remains composed under pressure, a senior team member who enjoys mentoring others in the craft of incident response, and a builder who can create the playbooks, scripts, and processes needed to protect our company and our customers. Between incidents, you'll build the tooling and workflows that make the next one faster and easier to handle.

What you'll do- Help take our security incident response capabilities to the next level by building relationships with Engineering teams, new playbooks and finding opportunities for automation.

• Grow others in the art of Incident Response to support the program and increase consistency in outcomes.

• Play a key role in building and shaping the Security Incident Response team.

• Take the role of Incident Commander to bring incidents to resolution.

• Turn recurring incident types into repeatable workflows (intake, playbook, automation, closure) so they become routine work for the team.

• Help shape the direction of investment by informing the business of trends and relevant metrics.

• Partner with our Security Engineers to monitor, refine, and expand our SIEM and SOAR platforms.

• Coordinate with HR, Fraud and Privacy teams to investigate potential fraudulent and sensitive activity including insider threats and snooping.

• Participate in an on-call rotation for responding to security incidents, internal questions and operational support.

• Partner with the detection engineering function to develop new, high-fidelity detection rules based on incident trends and threat intelligence.

Skills you bring- 5+ years of experience in the Cybersecurity domain.

• 3+ years experience being an Incident Manager, taking ownership of investigations.

• Ability to lead a team during high-stress situations, providing direction and support to team members.

• Understand how to turn noise into signals using a SIEM.

• Proficiency with AI coding (Claude Code, Cursor, ChatGPT etc). We invest in tooling (automation, Slack bots, AI agents) so responders spend their energy on the decisions that matter.

• Thinks in workflows: can look at a messy, recurring problem and break it into steps that tooling or AI can take on.

• Knowledge of and familiarity with cloud infrastructure.

• Believes that honesty, transparency, and inclusivity are important when communicating with both internal and external stakeholders.

• Demonstrates good judgment under pressure both in terms of technical problem solving and collaborating cross functionally.

• Eager to learn from the team and others. We value making one another successful...