Find work in Canada.

323,867 jobs across our Canadian network. How we count

Jobs in Canada

25+ jobs

Email me new jobs Save this search

Added 40 mins ago
Lead Radio Systems (LMR) Engineer/Specialist
Novus Technical Services
Calgary, AB
Full-time
We are currently looking for an experienced and highly motivated Lead Radio Systems (LMR) Engineer/Specialist to join our Calgary team. The successful candidate will lead the planning,…
Added 1 hour ago
Controls Engineer
Actalent
Cambridge, ON
Contract
The Control Engineer is tasked with developing and maintaining control system software for custom robotic control systems, data acquisition, and inspection systems, as well as other…
Added 1 hour ago
Systems Test Engineer
Actalent
Dartmouth, NS
Contract
We are seeking a Systems Test Engineer to join our team engaged in the maintenance of ships for the National Shipbuilding Strategy (NSS) program. This role involves planning and executing…
Added 1 hour ago
Concepteur(trice) En Conception Mécanique Aéronautique (Structures/Systèmes)
Actalent
Mirabel, QC
Contract
Mechanical Design Engineer - Aerospace Structures & Systems
Added 1 hour ago
Ingénieur(e) En Analyse De Contraintes Structurales
Actalent
Mirabel, QC
Contract
Our client, a leading organization in the high-tech manufacturing sector, is seeking a Structural Stress Analysis Engineer to support engineering activities related to metallic structures,…
Added 1 hour ago
Controls Engineer
Actalent
Cambridge, ON
Contract
The Control Engineer is tasked with developing and maintaining control system software for custom robotic control systems, data acquisition, and inspection systems, as well as other…
Added 3 hours ago
Process & Project Engineer - Warehouse & Distribution (BDL)
Brewers Distributor Ltd
Port Coquitlam, BC
Full-time
We are currently searching for a Process & Project Engineer – Warehouse & Distribution, reporting to the Director, Engineering and Capital Projects. This vacancy is a full-time, permanent…
Added 3 hours ago
Team Lead, Darlington Engineering Services
Kinectrics
Pickering, ON
Full-time
Design & Engineering Services (DES) is looking for an individual with an interest in participating in a fast-paced, challenging environment covering a wide range of business, engineering,…
Added 3 hours ago
Senior Project Coordinator – Architectural Envelope
AtkinsRéalis
Toronto, ON
Full-time
…closely with the Construction Lead, Construction Managers, Design Teams, Subcontractors, and Stakeholders. The successful candidate will ensure envelope-related work progresses safely,…
Added 3 hours ago
Senior Project Coordinator – Architectural Envelope
AtkinsRéalis
Toronto, ON
Full-time
…closely with the Construction Lead, Construction Managers, Design Teams, Subcontractors, and Stakeholders. The successful candidate will ensure envelope-related work progresses safely,…
Added 4 hours ago
Graduate Engineer
Voe Marine
Engineer, BC
Full-time
As a Voe Engineer: naval / structural / mechanical you will make a valuable contribution towards a wide variety of interesting projects spanning the full breadth of our portfolio.
Added 4 hours ago
Piping Engineer Level II
Worley
Markham, ON
Full-time
Worley is seeking a Piping Engineer , Nuclear in Markham, Ontario.
Added 5 hours ago
Manufacturing Engineer (Contract)
Husky Technologies
Bolton, ON
Full-time
…fitness and wellness center, intramural sports activities, on-site cafeteria, and clean, state-of-the-art manufacturing facilities with outstanding safety records. We offer a great work…
Added 5 hours ago
Applications Engineer
Husky Technologies
Bolton, ON
Full-time
…fitness and wellness center, intramural sports activities, on-site cafeteria, and clean, state-of-the-art manufacturing facilities with outstanding safety records. We offer a great work…
Added 5 hours ago
Designer, Development (Service)
Husky Technologies
Bolton, ON
Full-time
…fitness and wellness center, intramural sports activities, on-site cafeteria, and clean, state-of-the-art manufacturing facilities with outstanding safety records. We offer a great work…
Added 5 hours ago
Product Development Engineer|
Husky Technologies
Bolton, ON
Full-time
…fitness and wellness center, intramural sports activities, on-site cafeteria, and clean, state-of-the-art manufacturing facilities with outstanding safety records. We offer a great work…
Added 6 hours ago
Methods & Temporary Works Coordinator
Pomerleau
Vancouver, BC
$87,000 to $112,000 CAD / year
Full-time
…You will support project teams by bridging the gap between design and construction, with a strong emphasis on construction methods and planning, while also contributing to temporary works…
Added 6 hours ago
Civil Engineer-In-Training Municipal
McElhanney
Kamloops, BC
Full-time
We are looking for a motivated and passionate Civil Engineer-in-Training to support municipal engineering projects with a focus on water, wastewater, and land development. This is an…
Added 6 hours ago
CONTROLS ENGINEER
Morse Electric Inc.
Montreal, QC · Urban agglomeration of Montreal, QC
Full-time
Specify and design the control systems for various automated and semi-automated machines. Develop and validate modular, well-documented code required to implement the same.
Added 6 hours ago
Coordonnateur de projet
VINCI
Vancouver, BC
Full-time
Ensure continuous and clear communication and promote effective collaboration between the various stakeholders (design manager, foreman, superintendent, operations manager, project manager)
Added 7 hours ago
Senior Conveyance Engineer – Civil Engineering
WSP in Canada
Toronto, ON
Full-time
…that communities rely on every day. As a Senior Conveyance Engineer, you will lead the planning, design, and delivery of municipal water, wastewater, and stormwater infrastructure projects…
Added 7 hours ago
Water Treatment Engineer - Junior
BBA Consultants
Montreal, QC
Full-time
We’re currently seeking a Junior Water Treatment Engineer to join our team in Montréal. You’ll be responsible for working on opportunities specific to water treatment. In your role, you’ll…
Added 7 hours ago
Mechanical Engineer Level II
Worley
Markham, ON
Full-time
Worley is seeking an Mechanical Engineer to join our Nuclear team in Markham, Ontario.
Added 7 hours ago
Principal Mechanical Engineer
Worley
Edmonton, AB · Calgary, AB
Full-time
We are currently seeking a Principal Metallurgical Engineer to join our Canada West Engineering team in either Calgary, Alberta or Edmonton, Alberta. This role is a senior technical…
Added 8 hours ago
Civil Structural Designer
HOCS Projects
Calgary, AB
Full-time
Manage design hours, schedules, and deliverables in alignment with the Lead Engineer.

SuperQubit Inc.

Senior Cryptographic Protocol Engineer

Markham, ON, Canada

Job type: Full-time
Apply by: Oct 23, 2026
Experience: 5+ years of professional software engineering experience, with significant work in systems, networking, cybersecurity, or cryptographic software
Posting language: English
Posted: Aug 27, 2026

Apply About employer

Applications open in a new tab.

Original job description

Job Title: Senior Cryptographic Protocol Engineer

Office Location: 7303 Warden Ave. Markham, ON

Employment Type: Full‑time

Application Email: careers@superqubit.ai

We are building a novel secure data-encryption protocol around key material generated by our Quantum Key Distribution infrastructure - not another AES wrapper, but a new cryptographic construction designed specifically around what QKD-derived keys make possible. We need someone who can take that specification from idea to a production-grade, battle-tested Rust implementation running between geographically distributed nodes.

About The Role

The successful candidate will work closely with our technical team to translate a defined cryptographic protocol into a robust, secure, and production-quality implementation.

Rust will be the primary implementation language, but this is a systems and network-security role rather than a conventional application-development position. The ideal candidate has strong experience across cryptography, secure networking, systems programming, distributed systems, and security-sensitive software development.

You do not need to be a QKD expert. Our team will provide the necessary background on QKD, the existing infrastructure, and how shared key material is made available between nodes. Your job is to understand the protocol specification, design its software architecture, implement it securely, and integrate it with the surrounding communications infrastructure.

Responsibilities

Implement a novel cryptographic protocol based on a defined protocol specification.
Design and develop the core implementation primarily in Rust.
Design secure interfaces between the cryptographic protocol and the underlying QKD key-management infrastructure.
Develop mechanisms for securely consuming, managing, rotating, and tracking shared key material between communicating nodes.
Design and implement protocol state machines, session management, key lifecycle management, and error handling.
Integrate the protocol with existing networking and application infrastructure.
Implement protections against protocol-level attacks - replay, message manipulation, key reuse, state confusion, and related threats.
Develop comprehensive unit, integration, interoperability, performance, and security tests.
Analyze protocol behavior under failure conditions: lost messages, node restarts, key exhaustion, synchronization problems, network interruptions.
Document protocol implementation, interfaces, assumptions, security-sensitive design decisions, and operational procedures.
Participate in security reviews alongside cryptography and QKD specialists.
Profile and optimize for performance, latency, memory usage, concurrency, and efficient key consumption.
Troubleshoot systems and networking issues across geographically distributed nodes.
Travel between project sites and QKD/network infrastructure located in different cities as required.

Programming Languages

Required

Rust - systems, networking, or security-sensitive software
C/C++ - systems programming, integration with existing libraries
Python - automation, testing, tooling, crypto prototyping
Bash / Linux shell scripting

Preferred

Go
Java or C# - for integration with existing infrastructure
Rust FFI and integration between Rust and C/C++ libraries

Cryptography & Security

Required

Strong understanding of applied cryptography and cryptographic protocols, and experience implementing security-sensitive software, with a solid grasp of:

Symmetric cryptography
Key management and key lifecycle
Key derivation and key separation
Authentication and integrity
Randomness and entropy
Nonces, initialization vectors, and counters
Replay protection
Secure session establishment
Protocol state machines

Plus a working understanding of threat modeling, secure software design, and the ability to identify security risks in protocol implementations.

Preferred

Experience with cryptographic protocol design or implementation
Experience reviewing cryptographic implementations
Experience with cryptographic libraries and APIs
Experience with HSMs, secure enclaves, or other key-protection technologies
Familiarity with formal methods, protocol verification, or cryptographic security analysis
Familiarity with post-quantum cryptography
Experience with QKD or quantum communications

Systems & Computer Engineering

Strong understanding of Linux operating systems
Experience with processes, threads, concurrency, synchronization, and memory management
Experience developing multithreaded and asynchronous software
Strong understanding of computer networking and networking stacks
Experience with performance profiling, debugging, and optimization
Understanding of hardware/software interfaces
Experience troubleshooting systems at both software and OS levels

Networking & Distributed Systems

Strong understanding of TCP/IP and UDP networking
Experience with IPv4/IPv6, Ethernet, sockets, routing, and network troubleshooting
Experience designing or implementing network protocols
Experience with distributed systems and inter-node communication
Understanding of network latency, reliability, synchronization, and failure recovery
Experience with secure network communications
Familiarity with TLS, QUIC, IPsec, WireGuard, or the Noise Protocol Framework is an asset
Experience using Wireshark, tcpdump, and standard Linux networking tools

Software Engineering & DevOps

Strong experience with Git and modern software development workflows
Experience with automated unit, integration, and system testing
Experience with CI/CD
Experience with Docker and containerized environments
Familiarity with static analysis, dependency management, and vulnerability scanning
Experience with debugging and profiling tools
Familiarity with observability, logging, monitoring, and system diagnostics
Experience working in Linux-based development and production environments
Strong understanding of software architecture and maintainable code design

Protocol Documentation

Experience documenting protocol specifications, message formats, state machines, key-management procedures, error conditions, and security assumptions.

You should be comfortable converting complex technical and cryptographic concepts into clear engineering documentation that can be implemented, tested, reviewed, and independently understood by other engineers.

QKD Experience

QKD expertise is not a requirement

The QKD infrastructure and its key-management mechanisms are already available. The selected engineer will work with our team to understand how shared key material is generated and made available between nodes, how keys are identified and retrieved, key availability and consumption constraints, key lifecycle and rotation requirements, the interfaces/APIs exposed by the QKD infrastructure, and its operational constraints.

Your responsibility is to build the cryptographic protocol on top of this key-management capability - not to develop the QKD system itself.

On-Site & Travel Requirements

This is an on-site position based in Toronto, Ontario. The project includes geographically distributed QKD and network nodes located in different cities, so the successful candidate must be comfortable traveling between project sites to support development, testing, deployment, integration, and troubleshooting.

Based in Toronto, or willing to relocate
Willing to travel between project sites in Canada
Comfortable in data centers, network facilities, and labs
Able to troubleshoot on-site, across software and networking layers
Valid driver’s licence, if required for site travel
Able to satisfy applicable site-access and security requirements
Canadian citizen or permanent resident - required for project/security clearance

Personal Qualities

Exceptional attention to detail, particularly with security-sensitive code
Strong analytical and problem-solving abilities
Enjoys reasoning about complex protocols and distributed systems
Comfortable challenging assumptions and identifying potential security weaknesses
Works independently and takes ownership of technical problems
Communicates complex technical concepts clearly, in writing and in person
Collaborates well with cryptographers, QKD engineers, network engineers, and software developers
Comfortable working with novel technology where established patterns may not exist
Pragmatic - balances security, performance, reliability, and engineering complexity
Strong sense of responsibility when working with cryptographic keys and security-critical infrastructure

Education & Experience

Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Electrical Engineering, Cybersecurity, Mathematics, or a related field
5+ years of professional software engineering experience, with significant work in systems, networking, cybersecurity, or cryptographic software
Demonstrated professional experience with Rust
Demonstrated experience implementing or working with secure protocols or security-sensitive systems
Equivalent combinations of education, professional experience, and demonstrated technical expertise may be considered

What Success Looks Like

In this role, you will take a novel cryptographic protocol from specification to a secure, tested, interoperable implementation. You’ll be expected to think beyond simply implementing cryptographic operations - the implementation must correctly handle the complete protocol lifecycle: key acquisition, key usage, session state, message processing, failures, concurrency, synchronization, and secure recovery.

The end result should be a robust, well-engineered implementation capable of reliably operating between geographically distributed nodes connected through the QKD infrastructure.

Important Security Expectation

Because this project involves a novel cryptographic protocol, we distinguish between implementing a protocol and establishing that the underlying cryptographic construction is secure. You will be expected to identify implementation- and protocol-level security risks and participate in security reviews. Independent cryptographic review of the underlying construction may also be performed by cryptography specialists.

How to Apply

Send your resume, GitHub or relevant open-source contributions, and a short note on a systems or cryptography project you’re proud of to careers@superqubit.ai.

SuperQubit is committed to building secure, innovative technologies for the quantum era. We welcome applicants who are passionate about shaping the future of cybersecurity.

Apply About employer

More about this job

Responsibilities

Implement and integrate a novel cryptographic protocol in Rust, including secure key lifecycle management, session state, networking, and protections against protocol-level attacks. Test, document, optimize, and troubleshoot the implementation across geographically distributed nodes, collaborating with cryptography, QKD, and network specialists.

Requirements

Requires a bachelor’s or master’s degree in a relevant field, at least five years of professional software engineering experience, demonstrated Rust experience, and experience with secure protocols or security-sensitive systems. Candidates should have strong applied cryptography, Linux, networking, systems programming, and distributed-systems knowledge, and must be willing to work on-site in Toronto and travel between project sites; Canadian citizenship or permanent residency is required.

Skills

Rust
Applied Cryptography
Cryptographic Protocols
Key Management
Secure Networking
Systems Programming
Distributed Systems
TCP/IP and UDP
Linux
Concurrency
C/C++
Python
Protocol State Machines
Security Testing
CI/CD
Protocol Documentation

Visa sponsorship

Not detected in the job text

Keywords

Rust
C/C++
Python
Bash
Applied Cryptography
Cryptographic Protocols
Quantum Key Distribution
Key Management
Key Lifecycle
Linux
TCP/IP
UDP
IPv4/IPv6
Distributed Systems
Protocol State Machines
Replay Protection
TLS
QUIC
IPsec
WireGuard
Noise Protocol Framework
Wireshark
tcpdump
Docker
CI/CD
Automated Testing
Security Reviews
Threat Modeling
Rust FFI
Performance Profiling

Report this job