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Added 10 days ago
SI
Cryptographic Systems Engineer (Post-Quantum)
SuperQubit Inc.
Markham, ON
- Full-time
Experience writing Python interoperability layers - FFI bindings, PyO3, ctypes, or subprocess-based integration with Python components.
Added 10 days ago
A
Ingénieur En Cybersécurité
Actalent
MB · Saint-Laurent, MB
- $75 to $105 CAD / hour
- Contract
Maîtrise de l'automatisation et du script avec PowerShell, Bash et Python.
Added 10 days ago
P
Member of Technical Staff (Software Engineer, API Platform)
Perplexity
Toronto, ON
- $220,000 to $405,000 USD / year
- Full-time
…agent orchestration, and frontier topics that often change with each passing month. Throughout this work, you'll prioritize great developer and agent experience alike. You'll also define…
Added 10 days ago
R|
Programmer
RI-MUHC | Research Institute of the MUHC | #rimuhc
Montreal, QC
- Full-time
…arm of the McGill University Health Centre (MUHC) affiliated with the Faculty of Medicine at McGill University. The RI-MUHC is supported in part by the Fonds de recherche du Québec - Santé…
Added 10 days ago
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FPGA Design & Firmware Engineer, Staff
Qualcomm
Markham, ON
- Full-time
Hands-on programming experience with C++ and Python.
Added 10 days ago
S1
Full-Stack Machine Learning Engineer
Signal 1
Toronto, ON
- Full-time
- Depth in AI and backend engineering: strong Python for services and ML pipelines, working fluency with cloud infrastructure and CI/CD, and a working understanding of frontend development…
Added 10 days ago
LI
Sr. Data Engineer
Livingston International
Toronto, ON
- Full-time
…within the Data & Analytics function. You'll partner closely with Operations, Supply Chain Planning, Finance, internal IT and Business Intelligence teams to turn high-volume, time-sensitive…
Added 10 days ago
TI
Senior Data Developer
TS Imagine
Montreal, QC
- Full-time
As a Senior Data Engineer, you will own production data systems built with Snowflake, dbt, SQL, and Python. You will help modernize established pipelines, improve the platform’s shared…
Added 10 days ago
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DSP System Engineer
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- Full-time
New grads as well as experienced candidates (2-5 years) are welcome to apply with experience in the following area:
Added 10 days ago
A
Firmware Engineering Manager
AMD
Markham, ON
- $140,800 to $211,200 USD / year
- Full-time
The right candidate brings deep hands-on expertise in GFX pipeline and SOC architecture and debug, combined with the management maturity to coach engineers, drive cross-functional…
Added 10 days ago
A
Développeur / Developpeuse Full-stack
Actalent
Montreal, QC
- $60 to $70 CAD / hour
- Contract
Engage in 60% backend development with Python.
Added 10 days ago
TT
AI Application Modernization Architect/Lead- Bilingual
Tech Talent International
Montreal, QC
- $140,000 to $160,000 CAD / year
- Full-time
We currently have a role as an AI Application Modernization Architect/Lead- Bilingual with our large consulting client, working for a public sector, crown corporation in the Montreal area.
Added 10 days ago
A
Ingénieur En Validation & Vérification
Actalent
Quebec, QC
- $40 to $58 CAD / hour
- Contract
…devices and associated software systems. You will work closely with R&D, Quality Assurance, Regulatory Affairs, Manufacturing Engineering, and Product Management teams to ensure products…
Added 10 days ago
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Sr ASIC Design Verification Engineer, Low Power AI
Qualcomm
Markham, ON
- Full-time
Drive test plan development, execution and verification closure in conjunction with the design and verification teams
Added 10 days ago
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Senior AI Application Development Specialist
Schneider Electric
Montreal, QC
- $114,750 to $162,000 CAD / year
- Full-time
…problems collaboratively and can balance rapid experimentation with the thoughtful engineering practices required to build secure, testable, observable, and dependable AI-enabled systems.…
Added 10 days ago
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ModiFace - DevOps Developer
L'Oréal
Toronto, ON
- Full-time
Shape the future of beauty tech with us. As the pioneer of beauty tech within L'Oréal Groupe, ModiFace builds and scales groundbreaking AR and AI experiences for the world's most…
Added 10 days ago
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Staff Software Engineer, AI Foundations (AI Agent Optimization)
Temporal Technologies
Canada
- Full-time
Take end-to-end ownership of new features, working with other teams to deliver exceptional reliability and a great developer experience.
Added 10 days ago
Senior Consultant
Lightworks
Toronto, ON
Agentic Control Plane (ACP) – The ACP is Lightworks’ flagship joint development program, built in partnership with several of the world’s largest and most regulated institutions. Seniors…
Added 10 days ago
SE
Senior AI Data Engineering Specialist
Schneider Electric
Montreal, QC
- $114,750 to $162,000 CAD / year
- Full-time
…contextualize, govern, and evaluate content from multiple sources, with the appropriate levels of quality, traceability, and access…
Added 10 days ago
O
Lead Software Developer (AI-Powered Applications)
OpenText
Waterloo, ON
- Full-time
We are seeking a highly skilled and motivated Senior Software Developer to help build cutting-edge AI-powered applications and agentic experiences. In this role, you will work as a key…
Added 10 days ago
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Intern, Data Science & AI - Connected Aircraft (Winter 2027)
Bombardier
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- Volunteer
…safety. We are a global organization focused on working together with a team…
Added 10 days ago
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Software Engineer III - Financial Services
Cover Genius
Vancouver, BC
- $115,000 to $145,000 CAD / year
- Full-time
Hands-on experience building and maintaining high-quality web services using Python, with familiarity in additional languages such as TypeScript considered a plus.
Added 10 days ago
A
Technical Support Engineer
Airbyte
Remote, Canada
- $89,000 to $105,000 CAD / year
- Full-time
- Remote
Familiarity with Python, Java, or Kotlin and experience with CI/CD pipelines and GitHub.
Added 10 days ago
A
Senior Platform Lead
Affinity
Vancouver, BC
- Contract
…modernization and service delivery objectives. They will work closely with Information Services teams, technical stakeholders, and project teams to ensure scalable, secure, and supportable…
Added 10 days ago
TT
Senior Application Security Engineer
Temporal Technologies
Canada
- Full-time
Expertise in at least one programming language, familiarity with Python and Go.

SuperQubit Inc.

Cryptographic Systems Engineer (Post-Quantum)

Markham, ON, Canada

Full-time

Apply About employer

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Job details

Job type: Full-time
Apply by: Oct 29, 2026
Posting language: English
Posted: Aug 5, 2026

Original job description

Job Title: Cryptographic Systems Engineer (Post-Quantum)

Office Location: 7303 Warden Ave. Markham, ON

Employment Type: Full‑time

Application Email: careers@superqubit.ai

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 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

Design and build a local Rust-based TLS-intercepting proxy that attributes connections to applications, detects endpoint PQC support, and applies post-quantum or hybrid encryption policies. Integrate the Rust layer with the Python/liboqs cryptographic engine, develop the relay server, manage local certificates and trust stores, and maintain secure, crypto-agile code and documentation.

Requirements

Requires a bachelor's degree or higher in a relevant field, hands-on experience building cryptographic or low-level network security software, and strong Rust or C/C++ systems programming skills. Candidates need working knowledge of TLS internals, cryptography, OS-level traffic redirection and process attribution, Python interoperability, and X.509 PKI, and must reside in the Greater Toronto Area.

Skills

Rust
TLS
Post-Quantum Cryptography
Systems Programming
Network Programming
Python Interoperability
liboqs
eBPF
Netfilter
Windows Filtering Platform
PKI
X.509 Certificates
Cryptographic Engineering
Process Attribution
Async I/O

Visa sponsorship

Not detected in the job text

Keywords

Post-Quantum Cryptography
PQC
Rust
Python
liboqs
ML-KEM
ML-DSA
TLS 1.2
TLS 1.3
eBPF
Netfilter
Windows Filtering Platform
NetworkExtension
FFI
PyO3
Async I/O
X.509 PKI
Certificate Authority
Certificate Lifecycle
NIST FIPS 203
NIST FIPS 204
NIST FIPS 205
Hybrid Key Exchange
Crypto Agility
Traffic Redirection
Process Attribution
Local TLS Proxy
OS Trust Store
Key Material Security
IETF RFCs

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