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Added 1 day ago
Senior Data Platform Engineer
Norton Rose Fulbright
Toronto, ON
Full-time
The Senior Data Platform Engineer will act as a technical lead for our technologies in any project or initiative, and is responsible for designing, developing, implementing, and supporting…
Added 1 day ago
Senior Data Platform Engineer
Norton Rose Fulbright
Calgary, AB
Full-time
The Senior Data Platform Engineer will act as a technical lead for our technologies in any project or initiative, and is responsible for designing, developing, implementing, and supporting…
Added 1 day ago
Principal Data Engineer - Canada
JobGet
Remote, Canada
$160,000 to $190,000 CAD / year
Full-time · Remote
As our Principal Data Engineer, you will help lead the technical direction for how data flows, scales, and powers every decision at JobGet. You’ll own the data architecture behind our…
Added 1 day ago
Senior Embedded Software Designer
Kepler Communications Inc.
Toronto, ON
Full-time
We're on the hunt for a top-tier Embedded Software Engineer. Your focus will be on software development and maintenance required for both space and ground-based assets for a growing fleet…
Added 1 day ago
Firmware Engineer
Corvita Biomedical
Toronto, ON
Full-time
We are seeking a hands-on Embedded Systems Engineer to own both embedded firmware and MCU-based PCB design for assigned ARK subsystems. This role spans requirements, electronics…
Added 1 day ago
R&D Biomedical Engineer
Corvita Biomedical
Toronto, ON
Full-time
An optional portfolio, publication, public repository, or non-confidential work sample showing biomedical sensing, systems integration, software support, or mechanical support.
Added 1 day ago
University Co-Op Student - Telecom Operations Support - 8-12 Months - Winter 2027 - Toronto
Hydro One Networks Inc
ON · Rexdale, ON
…telecommunication engineering designs in various operations support systems (OSS) to support operating and planning functions across the organization. We are looking for an enthusiastic,…
Added 1 day ago
Electrical Engineer
Corvita Biomedical
Toronto, ON
Full-time
We are looking for a hands-on Electrical Engineer to develop ARK's electrical architecture and power systems from requirements and circuit design through verification and pilot…
Added 1 day ago
AI Mobile Engineer- IOS
Zafin
Toronto, ON
Full-time
…billing, loyalty, and relationship management; and Zafin IO, an integration platform that connects data, systems, and workflows across complex enterprise…
Added 1 day ago
Generative AI Cloud Operations Engineer - Evinova
AstraZeneca
Mississauga, ON · Canada - Mississauga
Full-time
As a Generative AI Cloud Operations Engineer for clinical trial design, planning, and operational optimization on our team, you will lead the development and management of AI operations…
Added 1 day ago
AI Mobile Engineer- IOS
Zafin
Toronto, ON
…billing, loyalty, and relationship management; and Zafin IO, an integration platform that connects data, systems, and workflows across complex enterprise…
Added 1 day ago
Full-Stack, Frontend Leaning, SWE
Affiniti
Canada
$150,000 to $240,000 USD / year
Full-time
…businesses that hold American communities together, and the software serving them has never reflected how much they…
Added 1 day ago
SCADA Engineer Candidates
EXONIX - Global Industrial Company
Engineer, BC
Full-time
We are seeking a skilled BMS Engineer to join our team and play a key role in designing, implementing, and maintaining cutting-edge building management systems for our clients.
Added 2 days ago
Senior Applications Engineer
Synopsys Inc
Ottawa, ON
Full-time
Synopsys is the leader in engineering solutions from silicon to systems, enabling customers to rapidly innovate AI-powered products. We deliver industry-leading silicon design, IP,…
Added 2 days ago
Customer Success Solutions Specialist
Teltoo (Acquired by Haivision)
Success, SK
Full-time
The Customer Success Engineer (CSE) combines strong technical expertise with a customer-focused approach to deliver an outstanding post-sale experience, from onboarding through day-to-day…
Added 2 days ago
Landscape Architect
AtkinsRéalis
Toronto, ON
Full-time
…creating urban and rural environments that foster the seamless integration of transportation systems with the built and natural environment. This approach aims to improve efficiency,…
Added 2 days ago
Senior Cryptographic Protocol Engineer
SuperQubit Inc.
Markham, ON
Full-time
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…
Added 2 days ago
Cryptographic Systems Engineer (Post-Quantum)
SuperQubit Inc.
Markham, ON
Full-time
Job Title: Cryptographic Systems Engineer (Post-Quantum)
Added 2 days ago
Senior Software Developer
Royal Bank of Canada
Toronto, ON
Full-time
We're looking for a Senior Backend Engineer with a passion for operational excellence and security to join our team and help shape the financial future of the next generation. You'll work…
Added 2 days ago
Senior Software Engineer
Microsoft
Vancouver, BC
Full-time
This role is suited for engineers with experience building native C++ software close to the operating system, particularly in performance-sensitive and reliability-critical environments.…
Added 16 days ago
AI-Native Full Stack Product Engineer
Lighthouse Software Group
Canada
Full-time
We are looking for an AI-native full stack engineer to join one of the leading software companies within our portfolio.
Added 2 days ago
AI Engineer
Zafin
Toronto, ON
Full-time
As an AI Engineer, part of Zafin's AIOS Platform or Forward Deploy Units, you'll help turn practical AI ideas into reliable software that customers can use every day. You'll work across the…
Added 2 days ago
Artificial Intelligence Engineer
Zown
Toronto, ON
Full-time
We are looking for an AI Software Engineer to design, build, and scale intelligent software systems that power our products. This role sits at the intersection of artificial intelligence…
Added 15 days ago
Full Stack Engineer, Support Experience (Greater China Support)
Stripe
Toronto, ON
Full-time
…Stripe's global support operations. Our engineers create the systems and services that support agents worldwide rely on every day to resolve issues for Stripe's millions of merchants and…
Added 2 days ago
AI Engineer
Zafin
Toronto, ON
As an AI Engineer, part of Zafin’s AIOS Platform or Forward Deploy Units, you’ll help turn practical AI ideas into reliable software that customers can use every day. You’ll work across the…

SuperQubit Inc.

Cryptographic Systems Engineer (Post-Quantum)

Markham, ON, Canada

Job type: Full-time
Apply by: Oct 1, 2026
Posting language: English
Posted: Aug 5, 2026

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Original job description

Job Title: Cryptographic Systems Engineer (Post-Quantum)

Office Location: 7303 Warden Ave. Markham, ON

Employment Type: Full‑time

Application Email: [email protected]

SuperQubit is building a pioneering Post-Quantum Cryptography (PQC) bridge platform - a transparent local proxy that upgrades legacy application communications to NIST-approved quantum-resistant algorithms without requiring any modification to existing software.

As quantum threats accelerate, the vast majority of deployed legacy systems cannot be patched or rewritten to adopt PQC. We are solving that problem at the infrastructure layer.

This is a hands-on software engineering role at the intersection of post-quantum cryptography, systems programming, and operating-system internals - not a network administration position.

Role Overview

You will architect and implement the systems core of a TLS-intercepting PQC proxy: software that runs locally on a host, identifies outbound connections from legacy applications, determines whether the remote endpoint supports PQC, and transparently re-encrypts the communication using NIST-standardized post-quantum algorithms including ML-KEM and ML-DSA.

The work spans kernel-adjacent interfaces (eBPF / netfilter on Linux, WFP on Windows, NetworkExtension on macOS), TLS internals, and cryptographic engineering. You will work directly alongside our in-house PQC cryptography lead to integrate a Python/liboqs-based cryptographic engine into a high-performance Rust systems layer.

The platform is designed from the ground up for crypto agility and hybrid classical/PQC operation, in alignment with NIST and IETF transition guidelines.

Key Responsibilities

Design and implement a local TLS-terminating proxy in Rust that transparently intercepts outbound application traffic and re-encrypts it using post-quantum cryptographic algorithms.
Build a process attribution module that maps active network connections to the originating application, enabling per-application PQC policy enforcement at the OS level.
Implement PQC capability detection - negotiating with remote endpoints to determine whether they support post-quantum, classical, or hybrid handshakes, and routing traffic accordingly.
Develop and maintain a clean integration bridge between the Rust systems layer and the Python/liboqs cryptographic engine, using FFI, PyO3, or subprocess IPC patterns.
Implement a lightweight relay server that terminates the PQC-upgraded tunnel on the network edge, completing the end-to-end encrypted bridge.
Design a policy and configuration layer that governs which application traffic receives PQC treatment, passthrough, or hybrid handling.
Architect the codebase for crypto agility - ensuring algorithm modules are abstracted, versioned, and replaceable as NIST standards evolve.
Manage local PKI and certificate lifecycle: programmatic CA generation, certificate issuance, and OS trust-store integration required for transparent TLS interception.
Conduct security-focused code review with particular attention to key material handling, memory hygiene, and safe failure modes.
Maintain thorough documentation, version control discipline, and reproducible build practices throughout the MVP and beyond.

Minimum Requirements

Bachelor’s degree or higher in Computer Science, Software Engineering, Electrical Engineering, or a related field, with demonstrated focus on systems programming, cryptography, or low-level security software.
Proven hands-on experience building cryptographic or low-level network security software - TLS proxies, traffic inspection engines, VPN clients, encryption gateways, or equivalent.
Strong systems programming skills in Rust (strongly preferred) or C/C++, with experience in async I/O and high-throughput network programming.
Deep working knowledge of TLS 1.2 and TLS 1.3 internals - handshake mechanics, certificate chain validation, cipher suite negotiation, and SNI handling.
Working knowledge of modern cryptography fundamentals - symmetric and asymmetric primitives, key exchange, authenticated encryption, and an understanding of where post-quantum algorithms fit into the existing landscape.
Experience with OS-level traffic redirection and process-to-connection attribution on at least one platform - iptables / nftables / tproxy / eBPF on Linux, or Windows Filtering Platform (WFP).
Experience writing Python interoperability layers - FFI bindings, PyO3, ctypes, or subprocess-based integration with Python components.
Understanding of X.509 PKI, local CA operation, and programmatic certificate generation.
Must reside in the Greater Toronto Area.

Preferred Qualifications

Direct experience with liboqs, OQS-OpenSSL, AWS-LC, or Cloudflare CIRCL PQC libraries.
Familiarity with NIST PQC standards (FIPS 203 / 204 / 205) and IETF hybrid key exchange drafts.
Experience with eBPF or netfilter kernel hooks for low-level traffic capture and process attribution on Linux.
Relay or edge server development experience in Go or Rust for the server-side tunnel component.
Familiarity with PKCS#11, TPM, or OS keystore APIs (Windows CNG, macOS Keychain) for secure key material storage.
Contributions to open-source security, networking, or cryptography projects.
Comfort reading and implementing directly from IETF RFCs and NIST standard publications.

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 [email protected].

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

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More about this job

Responsibilities

Architect and implement a high-performance Rust-based TLS-intercepting proxy to upgrade legacy communications to quantum-resistant algorithms. Develop OS-level process attribution and PQC capability detection to ensure secure, transparent re-encryption of outbound traffic.

Requirements

Requires a degree in Computer Science or related field with strong systems programming skills in Rust or C++ and deep knowledge of TLS internals. Must have experience with OS-level traffic redirection (eBPF/WFP) and reside in the Greater Toronto Area.

Skills

Rust
Post-Quantum Cryptography
TLS 1.2/1.3
Systems Programming
eBPF
Python
Network Security
X.509 PKI
C/C++
Linux Kernel
Windows Filtering Platform
Cryptographic Engineering
Async I/O
FFI
Network Programming
Security Code Review

Visa sponsorship

Not detected in the job text

Keywords

Post-Quantum Cryptography
PQC
Rust
Python
TLS
eBPF
Netfilter
WFP
ML-KEM
ML-DSA
liboqs
X.509
PKI
FIPS 203
FIPS 204
FIPS 205
IETF
PyO3
FFI
Network Security
Systems Programming
Cryptography
Linux
Windows
macOS
NetworkExtension
Cipher Suite
Handshake
Hybrid Key Exchange
OpenSSL

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