Senior Software Engineer - Cybersecurity (Hybrid NYC-Canada)

True; New York (NY); Hybrid; CAD 293,000 - 363,000; Full time

Job summary

Unknown is seeking a senior full-stack software engineer to join a product engineering team building cybersecurity tools for the U.S. defense industrial base. You will own features from planning through deployment and help shape platform infrastructure.

In this hybrid role, you will mentor engineers, lead multi-engineer projects, and maintain high engineering standards while moving quickly. Prior experience in TypeScript, React, Ruby on Rails, GraphQL, and backend OO languages is expected.

Qualifications

• At least 6 years of full-stack software engineering experience, with senior or staff-level depth.
• Strong production experience with TypeScript and a modern object-oriented backend language.
• Experience with React, GraphQL, and Ruby on Rails; familiarity or interest in Rust or Node.js is useful.
• Experience leading multi-engineer projects and mentoring other engineers.
• Hands-on coding, technical ownership, and delivering complex software.
• Experience at early-stage startups and motivation to work in cybersecurity/defense-related technology.
• Strong computer science fundamentals or an equivalent track record.

Responsibilities

• Build full-stack features for new products or develop foundational infrastructure.
• Contribute from planning and design through deployment and ongoing optimization.
• Work closely with product, design, and engineering partners in an iterative environment.
• Maintain high engineering standards while moving quickly and taking ownership.
• Mentor engineers and help shape team practices and culture.

Skills

Full-stack

TypeScript

Backend OOP

React

GraphQL

Ruby on Rails

Rust

Tech leadership

CS fundamentals

Job description

Unknown is seeking a senior full-stack software engineer to join a product engineering team building cybersecurity tools for the U.S. defense industrial base. You will own features from planning through deployment and help shape platform infrastructure.

In this hybrid role, you will mentor engineers, lead multi-engineer projects, and maintain high engineering standards while moving quickly. Prior experience in TypeScript, React, Ruby on Rails, GraphQL, and backend OO languages is expected.