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Stack App Jobs in Toronto, ON (NOW HIRING)

MBR Partners

Staff Engineer

Toronto, ON · On-site

$150K/yr

... observability stacks Strong LLM prompting skills, but also being able to work without them ... Candidates need to be comfortable with low-level, high-performance systems -- not web app ...

Wave HQ

Director of Growth Marketing

Toronto, ON · On-site

CA$160K - CA$190K/yr

Drive lifecycle marketing (email, in-app, nurture, advocacy) to increase adoption, reduce churn ... Own the marketing tech stack and data foundation to ensure accurate attribution, funnel visibility ...

CookUnity

AI Native Engineer

Toronto, ON

Design the future-state workflow: where an agent acts autonomously, where a deterministic app ... full-stack when needed. * Hands-on experience with LLMs in production , not just prompting, but ...

Behavox

Senior Software Engineer (JAVA)

Toronto, ON · On-site

Infrastructure as Code (Terraform or equivalent) and Twelve-Factor App methodology * Observability, reliability and deployment: Implementing full observability stacks: structured logging, distributed ...

Td

.NET/C# Engineer, TD Securities

Toronto, ON · On-site

CA$105K - CA$129K/yr

Full stack development from UI (web technologies) to app services. * Perform systems administration: monitor, configure, back-up, authenticate, tune. * Aim for defect-free programming, create and ...

Parallelz

Software Engineer

Toronto, ON · On-site

... app store, and without any modifications to their code. Parallelz is an AI-native company. We are ... stack, take real ownership, and help define what AI-first platform engineering looks like at ...

Parallelz

Software Engineer

Toronto, ON

... app store, and without any modifications to their code. Parallelz is an AI-native company. We are ... stack, take real ownership, and help define what AI-first platform engineering looks like at ...

Lazer Technologies

Technical Architect, Shopify

Toronto, ON · On-site

$90 - $130/hr

... stack (online, POS, etc.). You will work closely with key client stakeholders, lead 2‑3 projects ... Shopify app store development (building and launching apps privately for merchants or publicly on ...

Drive Capital

Senior Software Engineer

Toronto, ON · On-site

$100 - $130/hr

Our Stack * Backend: Python 3.11, FastAPI, SQLModel, PostgreSQL/pgvector, Pydantic AI, Redis * Frontend: Next.js 14+ (App Router), React 19, TypeScript, Plate.js, Radix UI * Infrastructure: GCP ...

Roadpost

Senior Software Engineer - Mobile

Toronto, ON · On-site

$160 - $180/hr

For many users, the app is their primary experience of ZOLEO. As a Senior Software Engineer, Mobile ... What You Bring You do not need to have worked across every part of the mobile stack already; strong ...

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All JobsStack App JobsStack App Jobs in Toronto, ON

Stack App information

What are Stack Apps?

Stack Apps are applications, scripts, and tools built using the Stack Exchange API. They are designed to enhance the user experience on Stack Exchange sites by providing additional features, integrations, or utilities. Developers create Stack Apps to automate tasks, provide analytics, or interact with Stack Exchange data in creative ways. The Stack Apps platform also serves as a community for sharing and discussing these tools.

What are the main responsibilities of a Stack App Developer within a typical software development team?

A Stack App Developer is responsible for building, maintaining, and optimizing applications across the full technology stack—both front-end and back-end. In a typical team, they collaborate closely with designers, product managers, and other engineers to deliver functional, user-friendly features. Daily tasks may include coding, code reviews, debugging, and participating in agile ceremonies. This role often involves problem-solving and adapting to new technologies as project needs evolve, making strong communication and teamwork skills essential.

What are the key skills and qualifications needed to thrive as a Stack Application Developer, and why are they important?

To thrive as a Stack Application Developer, you need strong proficiency in programming languages (such as JavaScript, Python, or Java), knowledge of front-end and back-end frameworks, and typically a degree in computer science or related field. Experience with development tools like Git, databases (SQL or NoSQL), and cloud platforms is commonly required, along with familiarity with CI/CD pipelines. Excellent problem-solving skills, communication, and the ability to work collaboratively in agile environments set top performers apart. These skills are crucial for building robust, scalable applications, maintaining code quality, and delivering efficient solutions in dynamic development teams.
What are popular job titles related to Stack App jobs in Toronto, ON? For Stack App jobs in Toronto, ON, the most frequently searched job titles are:
What job categories do people searching Stack App jobs in Toronto, ON look for? The top searched job categories for Stack App jobs in Toronto, ON are:
Stack App jobs near you
Infographic showing various Stack App job openings in Toronto, ON as of July 2026, with employment types broken down into 36% Full Time, 58% Part Time, and 6% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.

Staff Engineer

MBR Partners

Toronto, ON • On-site

$150K/yr

Full-time

Re-posted 23 days ago

Job description

We are currently hiring for our clients scale up of a software business.
This is a senior appointment:
Own parts of their core backend infrastructure, which is a complex, real-time distributed system written in Python and Rust
Own big initiatives end-to-end and deliver them with minimal guidance
Troubleshoot highly complex production issues
Constantly improve the development velocity while maintaining a very high reliability standard
Their backend is developed in Python running in the cloud over k8s. It's not a typical backend interacting with a UI frontend, handling audio streams in real-time. their systems integrate with a large number of third party services. There are several challenges, and as in any fast-paced startup, each team member gets to experience a lot of professional growth and ownership.
Qualifications:
BSc in Software Development or equivalent industry experience
Previously a Staff or Principal Engineer at a startup company
10+ years of experience in Python development
Strong Python Asyncio experience
Strong software design skills
Excellent communicator in writing and orally
Significant experience with at least one strongly typed language (Rust, C++, Go,
Swift, Java, etc)
Deep understanding of Networking Protocols, Operating Systems
Deep knowledge of Python Profiling
Experience in delivering and troubleshooting a production-grade cloud-based
distributed system
Experience in building and troubleshooting a real-time low-level system (e.g.
kernel, drivers, RTOS)
Kubernetes and Helm experience
Experience with different observability stacks
Strong LLM prompting skills, but also being able to work without them
Experience with gRPC and its troubleshooting
Being a contributor or maintainer of an open-source package
Bonus:
An understanding of one of the following: WebRTC, STUN/TURN, SIP, RTP,
HLS, RTMP
Having worked with Rust and PyO3
Audio programming experience
The position centres on distributed systems and concurrent programming, specifically Python's async io framework. Candidates need to be comfortable with
low-level, high-performance systems — not web app development. Some DevOps familiarity (e.g., Kubernetes) is also expected.
This role is a Global remote role, ideally US or Europe ( NO Applications from India / Pakistan ) EST Timezone