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Added 44 mins ago
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Added 23 days ago
Full-Stack Developer (Rust & WebAssembly)
SuperQubit Inc.
Markham, ON
$80,000 to $120,000 CAD / year
Full-time
You do not need to be a cryptography or QKD expert. Familiarity with these technologies is an asset, but the primary focus of this role is full-stack software development and integration.
Added 1 month ago
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SuperQubit Inc.

Full-Stack Developer (Rust & WebAssembly)

Markham, ON, Canada

Pay: $80,000 to $120,000 CAD / year
Job type: Full-time
Apply by: Sep 26, 2026
Experience: 3+ years of professional software development experience, with demonstrated experience across both frontend and backend development
Posting language: English
Posted: Aug 27, 2026

Apply About employer

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Original job description

Job Title: Full-Stack Developer (Rust & WebAssembly)

Office Location: 7303 Warden Ave. Markham, ON

Employment Type: Full‑time

Application Email: [email protected]

We are looking for a Full-Stack Developer (Rust & WebAssembly) to join our engineering team and contribute to the development of modern, secure, scalable software applications and platforms.

The successful candidate will work across the frontend, backend, APIs, databases, and infrastructure layers, with Rust serving as an important technology across both backend services and selected frontend components through WebAssembly (WASM).

This is an opportunity for a developer who enjoys working across the entire technology stack and is interested in building software where performance, security, reliability, and maintainability are important.

The candidate will work closely with our engineering team to design, develop, test, deploy, and maintain production-quality software.

You do not need to be a cryptography or QKD expert. Familiarity with these technologies is an asset, but the primary focus of this role is full-stack software development and integration.

Responsibilities

Design, develop, test, deploy, and maintain full-stack applications and services.
Develop backend services and APIs primarily using Rust.
Develop selected frontend components using Rust and WebAssembly (WASM) where performance, security, or computational efficiency provides a meaningful advantage.
Develop modern web interfaces using TypeScript/JavaScript and appropriate frontend frameworks.
Integrate Rust/WASM components with modern web applications.
Design and implement RESTful and/or real-time APIs.
Design database schemas, queries, migrations, and data-access layers.
Integrate frontend applications with backend services and APIs.
Develop authentication, authorization, session management, and other security-related functionality.
Build reusable, modular, and maintainable software components.
Write clean, well-structured, documented, and testable code.
Develop unit, integration, end-to-end, interoperability, and performance tests.
Diagnose and resolve software, database, networking, and deployment issues.
Participate in software architecture and technical design decisions.
Contribute to code reviews and establish strong engineering practices.
Work with DevOps and infrastructure components to deploy and operate applications.
Monitor application performance, reliability, and security.
Collaborate with backend, systems, cryptography, networking, and infrastructure engineers.
Work with existing systems as well as develop new applications and services from the ground up.

Programming Requirements

Rust: strong professional experience developing production software, preferably including backend, systems, networking, or security-sensitive applications.
TypeScript/JavaScript: strong experience with modern web application development.
HTML5/CSS3: strong understanding of modern web standards and responsive interfaces.
SQL: strong understanding of relational databases and database design.
Python: experience with scripting, automation, testing, or tooling.
Bash/Linux shell scripting.

Frontend Development

Strong experience with modern frontend development using technologies such as:

React
Next.js
Vue.js
Angular
Other modern TypeScript/JavaScript frameworks

The Candidate Should Have Experience With

Responsive web application development
Component-based application architecture
State management
API integration
Form handling and validation
Browser security
Accessibility
Frontend performance optimization
Cross-browser compatibility
Modern frontend build and deployment tools

Rust & WebAssembly

Role

A key aspect of this role is the ability to use Rust in the frontend where appropriate. The candidate should ideally have experience:

Developing Rust applications that compile to WebAssembly
Designing frontend components that use Rust/WASM for computationally intensive or security-sensitive functionality
Integrating Rust/WASM modules with TypeScript/JavaScript applications
Managing communication between WASM modules and browser-based application code
Understanding the performance and security characteristics of WebAssembly
Determining when Rust/WASM provides a meaningful advantage over conventional JavaScript/TypeScript implementations

The expectation is not that the entire frontend will be written in Rust. The successful candidate should be able to choose the appropriate technology for each component while maintaining a coherent architecture.

Backend Development

Strong Experience With Backend And Server-side Development, Including

Rust-based web services and APIs
REST APIs and/or other service architectures
Asynchronous and concurrent programming
Authentication and authorization
Session management
Input validation and secure error handling
Service-to-service communication
Background jobs and asynchronous processing
Logging, monitoring, and observability
Performance optimization and profiling

Experience with Rust frameworks such as Axum, Actix Web, Rocket, or equivalent is an asset.

Databases

Experience With Relational And/or NoSQL Databases, Including

PostgreSQL
MySQL/MariaDB
SQLite
Redis
MongoDB or equivalent technologies

The Candidate Should Understand

Database schema design
Indexing
Query optimization
Transactions
Data integrity
Database migrations
Connection pooling
Database security
ORM and database-access frameworks

Experience with Rust database technologies such as SQLx, Diesel, or equivalent is an asset.

APIs & Integration

Experience designing and consuming REST APIs
Understanding of JSON and other data serialization formats
Experience with WebSockets or other real-time communication technologies
Experience with API authentication and authorization
Understanding of API versioning and backward compatibility
Experience integrating third-party APIs and services
Experience designing interfaces between distributed software components

Security

Security is an important part of this role. The candidate should have a good understanding of:

Secure software development practices
Authentication and authorization
Secure API design
Session and credential management
Secrets management
Input validation and sanitization
Encryption in transit and at rest
Common web application vulnerabilities
OWASP principles and security practices
Dependency and vulnerability management
Secure handling of sensitive information

Experience developing security-sensitive software is an asset. Experience with cryptographic software, secure communications, or QKD-related applications is also an asset, but not required.

Systems & Linux

Strong experience working with Linux
Understanding of processes, threads, concurrency, and system resources
Experience troubleshooting applications at the operating-system level
Understanding of TCP/IP networking
Familiarity with DNS, HTTP/HTTPS, TLS, TCP, UDP, and sockets
Experience with Linux command-line tools
Experience with system monitoring and troubleshooting
Understanding of containerized environments

DevOps & Cloud

Experience With Modern Development And Deployment Practices, Including

Git and Git-based workflows
CI/CD pipelines
Docker and containerization
Linux server environments
Cloud platforms such as AWS, Azure, or Google Cloud
Application deployment and configuration
Automated testing and deployment
Monitoring, logging, and observability

Experience with Kubernetes is an asset.

Software Engineering

Strong understanding of software architecture and design patterns
Experience designing modular and maintainable systems
Strong understanding of version control and collaborative development
Experience performing code reviews
Experience writing automated tests
Familiarity with Agile/Scrum or similar development methodologies
Strong debugging and problem-solving skills
Ability to work with existing codebases as well as develop new systems from the ground up
Ability to evaluate technical trade-offs between performance, security, maintainability, and development complexity

Education & Experience

Bachelor’s or Master’s degree in Computer Science, Computer Engineering, Software Engineering, or a related field
3+ years of professional software development experience, with demonstrated experience across both frontend and backend development
Demonstrated professional experience with Rust
Demonstrated experience developing and deploying production web applications
Experience with modern frontend frameworks and TypeScript/JavaScript
Experience with Linux-based development environments
Equivalent combinations of education, professional experience, and demonstrated technical expertise may be considered

Personal Qualities

We Are Looking For Someone Who

Enjoys working across the entire technology stack
Has strong analytical and problem-solving abilities
Pays close attention to software quality, security, and maintainability
Can work independently while collaborating effectively with other engineers
Is comfortable learning new technologies and working in unfamiliar technical domains
Takes ownership of projects and follows problems through to resolution
Communicates technical concepts clearly
Is comfortable working with both high-level application development and lower-level systems problems
Has strong attention to detail
Is pragmatic and able to balance functionality, performance, security, and development time
Enjoys building new systems and solving technically challenging problems
Is comfortable working in an environment where the technology and architecture are continuously evolving

On-Site & Travel Requirements

This is an on-site position based in Toronto, Ontario. The candidate must:

Be based in Toronto or willing to relocate to Toronto
Be willing to travel between project sites in Canada when required
Be comfortable working directly with the engineering team in an on-site environment
Be comfortable working in data centers, laboratories, network facilities, and other technical infrastructure environments when required
Be able to troubleshoot software and systems issues on-site
Hold a valid driver’s licence if required for travel between facilities
Be able to satisfy applicable site-access and security requirements
Be a Canadian citizen or Canadian permanent resident due to project/security requirements

Compensation

CAD $80,000–$120,000 per year

Depending On Experience, Qualifications, And Technical Expertise.

What Success Looks Like

In this role, you will contribute to the development of complete software systems rather than working exclusively on one layer of the technology stack.

You will work across frontend applications, Rust/WASM components, backend services, APIs, databases, and infrastructure.

The successful candidate will help build software that is secure, scalable, maintainable, reliable, and performant, while contributing to the evolution of our overall software architecture.

You will also help identify opportunities where Rust and WebAssembly can provide meaningful advantages within the broader application stack.

Technical Environment

Primary language: Rust
Frontend: TypeScript, JavaScript, React/Next.js or comparable framework
Frontend systems: WebAssembly (WASM), including Rust/WASM
HTML5 / CSS3
Python
SQL / PostgreSQL
Linux
REST APIs / WebSockets
Docker
Git / CI/CD
Cloud and distributed infrastructure
Automated testing
Monitoring and observability

Ideal Candidate

The ideal candidate is a full-stack engineer who combines strong Rust development skills with practical experience in modern web development, WebAssembly, backend systems, databases, and infrastructure.

You should be comfortable moving between a frontend application and a Rust backend, understanding how the pieces communicate, diagnosing problems across the stack, and making thoughtful architectural decisions.

You should also be curious about using Rust beyond the traditional backend environment and be interested in building high-performance browser components through WebAssembly.

You do not need to be a QKD or cryptography expert. We can provide the necessary domain knowledge. Strong software-engineering, Rust, full-stack, and systems skills are what we are looking for.

How to Apply

Send your resume, GitHub or relevant open-source contributions 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.

Apply About employer

More about this job

Responsibilities

Design, develop, test, and maintain full-stack applications using Rust and WebAssembly across frontend and backend layers. Collaborate with engineering teams to build secure, scalable software while managing databases, APIs, and infrastructure.

Requirements

Requires 3+ years of professional software development experience with strong proficiency in Rust and modern web technologies like TypeScript. Candidates must be based in or willing to relocate to Toronto and possess a degree in a related technical field.

Skills

Rust
WebAssembly
TypeScript
JavaScript
React
Next.js
PostgreSQL
SQL
Linux
REST APIs
Docker
Git
CI/CD
WebSockets
Python
HTML5

Visa sponsorship

Not detected in the job text

Keywords

Rust
WebAssembly
Full-stack
TypeScript
JavaScript
React
Next.js
PostgreSQL
SQL
Linux
REST APIs
Docker
Git
CI/CD
WebSockets
Python
HTML5
CSS3
Cybersecurity
Cryptography
QKD
Backend
Frontend
Infrastructure
Agile
Scrum
Database design
System architecture
Unit testing
Observability

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