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Added 5 days ago
Senior AI Engineer
CI Financial
Toronto, ON
Full-time
Architect and build production-grade intelligent systems and applications using existing LLMs (e.g., OpenAI, Claude, Gemini, etc.) through API integration, prompt engineering, fine-tuning,…
Added 5 days ago
Concepteur électrique / Electrical Designer
Wabtec Corporation
Montreal, QC
Full-time
…des échéanciers et le soutien aux essais de validation et d’intégration. Il collaborera directement avec les clients, les groupes de produits et les équipes d’applications afin de…
Added 5 days ago
Applications Development Technology Lead Analyst - Lead Java Developer - Vice President
Citi
Mississauga, ON
Full-time
…robust, highly available, and scalable enterprise application systems. This role combines hands-on engineering in modern Java ecosystems (Java 17+, Spring Boot, Kafka, Cloud Native) with…
Added 5 days ago
Mixed Signal IP Integration Engineer – New Grad
Ciena
Ottawa, ON
Full-time
Join a team focused on the design and integration of custom mixed-signal macros within an ASIC flow for next-generation high-baud-rate optical modems. Work involves advanced nanoscale CMOS…
Added 6 days ago
Generative AI Cloud Operations Engineer - Evinova
Evinova
Mississauga, ON
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 6 days ago
Tooling SME, Product Delivery & Transformation
TD
Toronto, ON
Full-time
The Product Delivery & Transformation team within TDS Data, Delivery & Integration (DDI) is responsible for advancing delivery excellence across TD Securities by establishing modern…
Added 6 days ago
Mechanical Designer
Professional Staffing
Cambridge, ON · Greater Kitchener-Cambridge-Waterloo Metropolitan Area
$32 to $48 CAD / hour
Full-time
In this role, you’ll work alongside Mechanical Design Leads and cross-functional teams to engineer high-impact solutions, meet key project milestones, and support an entrepreneurial,…
Added 6 days ago
Manufacturing Engineer
Adamson Systems Engineering
Port Perry, ON
$75,000 to $90,000 CAD / year
Full-time
Adamson is a discrete manufacturer with strong vertical integration. Our capacity includes PCB assembly, CNC part making, finishing and complex product assembly; with these tools we…
Added 6 days ago
Software Development Engineer In Test
Actalent
Waterloo, ON
Contract
This Software Development Engineer in Test (SDET) role focuses on designing, developing, and maintaining automated test scripts and tools in Python to validate new features for advanced…
Added 6 days ago
AI Automation & Software Engineer
WBM Technologies
Winnipeg, MB · Regina, SK · Saskatoon, SK · Edmonton, AB · Calgary, AB
Full-time
The AI Automation & Software Engineer designs, builds, and supports AI, automation, and software solutions for both customer environments and WBM's internal operations. You'll work across…
Added 6 days ago
Solution Engineer - Loyalty Commerce (PBU)
Plusgrade
Montreal, QC
Full-time
…consultant to step into high-stakes pre-onboarding engagements, own integration design end to end, and turn ambitious loyalty goals into scalable…
Added 6 days ago
Design Engineer
NP Aerospace
London, ON
$80,000 to $100,000 CAD / year
Full-time
In this role, you’ll contribute to the development of cutting-edge protection systems used by Canada’s Military and Law Enforcement personnel. Your work will directly support those who…
Added 6 days ago
Senior Software Engineer, Backend, AI Labs
Epiq
Toronto, ON · Greater Toronto Area, Canada
Full-time
…startup within a global organization, focused on agentic AI systems, knowledge-driven reasoning, and enterprise-scale simulations. We…
Added 6 days ago
Senior Software Engineer - React (Platform UI)
Ping Identity
Vancouver, BC
Full-time
We are looking for a highly motivated Senior Software Engineer to join our Platform UI team to build web applications for the next generation Identity platform. This role requires a…
Added 6 days ago
Software Engineer II - Platform UI (React)
Ping Identity
Vancouver, BC
Full-time
We are looking for a highly motivated Software Engineer II to join our Platform UI team to build web applications for the next generation Identity platform. This role requires a developer…
Added 6 days ago
AI Architect, Manager
Avanade
Toronto, ON
Full-time
…understand how various parts of the business processes, operating systems, and application architectures work together to design a specific AI solution that fits a client’s environmental…
Added 6 days 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 6 days 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 6 days 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 6 days 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 6 days 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 6 days 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 6 days 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 7 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 7 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,…

Closed listing

SuperQubit Inc.

Cryptographic Systems Engineer (Post-Quantum)

Markham, ON, Canada

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

This opening has closed.

The original listing is kept below for reference.

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Added 5 months ago
Staff Software Engineer, Identity and Access Management
Kong · Remote, Canada
$163,685 to $245,800 CAD / year

Search current openings

Original job description

Archived listing. The details below describe a past opening.

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.

About employer

More about this job

Responsibilities

Architect and implement a local TLS-intercepting PQC proxy in Rust to upgrade legacy application communications to quantum-resistant algorithms. Develop process attribution modules and integration bridges between the Rust systems layer and a Python-based cryptographic engine.

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. Candidates must have experience with OS-level traffic redirection 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++
liboqs
Windows Filtering Platform
Async I/O
FFI
PyO3
Network Programming
Cryptography Engineering

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
FFI
PyO3
NIST
IETF
Network Security
Systems Programming
Crypto Agility
Hybrid Key Exchange
C++
Linux
Windows
macOS
NetworkExtension
Symmetric Encryption
Asymmetric Encryption
Cipher Suite
SNI

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