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Software Engineer Startup Jobs in Ontario (NOW HIRING)

Signal 1

SeniorSoftwareEngineer

Toronto, ON · On-site

Director of Software Engineering Signal 1 helps health systems accelerate AI adoption with a ... Signal 1 is a 30-person, well-funded and rapidly growing startup with strong product market fit and ...

Clockwork.io

CA$130K - CA$175K/yr

Summary We are looking for a Software Development Engineer in Test who thrives in fast-paced startup environments and is excited to be a co-owner and major contributor to our testing and CI/CD ...

Fortive

Senior Software Developer

Mississauga, ON · On-site +1

As a Senior Software Developer , you'll play a key role in designing and building high-performing ... We are a global industrial technology innovator with a startup spirit. Our forward-looking ...

Borrowell

Software Developer

Toronto, ON · On-site +1

As a Software Developer on Borrowell's Engineering team, you will design, develop, optimize, test ... Experience in fast-paced Fintech or startup environments. Our Engineering Team Values * We work ...

eStorage

Senior DevOps Engineer

Kitchener, ON · On-site +1

CA$110K - CA$140K/yr

... dynamic startup like environment.. Responsibilities: * Design, implement, and maintain CI/CD ... Implement and manage software release channels and mechanisms for on-site and remote software image ...

Canadian Solar

Senior DevOps Engineer

Kitchener, ON · On-site +1

CA$110K - CA$140K/yr

... dynamic startup like environment.. Responsibilities: * Design, implement, and maintain CI/CD ... Implement and manage software release channels and mechanisms for on-site and remote software image ...

ITS Global

Fullstack Developer

Toronto, ON · On-site

We are small, but fast-growing startup, building custom blockchain-based digital identity and ... We are looking for a person with the following skillset: 5+ years of software design and ...

TTEC Digital

Senior QA / SDET Engineer

Toronto, ON · Remote

TTEC Digital seeks a Sr. QA/SDET Engineer to join our team. This role is a full-time and fully ... We move like an early-stage startup, backed by the scale, distribution, and enterprise client base ...

TTEC Digital

Engineering Tech Lead

Toronto, ON · Remote

... with a startup mentality and a show-me bias: working software over slides, prototypes over ... Engineer role - you must out-code the squad you lead. * Has led a squad and shipped a hard real ...

Propel Holdings

Sr. Software Developer

Toronto, ON

CA$110K - CA$135K/yr

About You: As a fast-growing fintech, we stay true to our startup roots. You picture yourself ... Continuously improve the quality of software through reviews, testing and refactoring * Manage and ...

MLabs

Senior Infrastructure Engineer

Toronto, ON · Remote

CA$170K - CA$220K/yr

... startup. They are currently seeking a Senior Infrastructure Engineer to design and build an internal platform that empowers product teams to deploy software with confidence, reliability, and speed.

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Software Engineer Startup information

What are the key skills and qualifications needed to thrive in the software engineer startup position, and why are they important?

To thrive as a Software Engineer in a startup environment, you need solid programming skills, a problem-solving mindset, and a degree in computer science or related experience. Familiarity with agile methodologies, cloud platforms, version control (like Git), and rapid prototyping tools is highly valued, and startup engineers may also benefit from exposure to full-stack development. Adaptability, effective communication, and the ability to work independently in uncertain environments are standout soft skills. These competencies enable engineers to rapidly iterate on products, effectively collaborate across small teams, and contribute to the dynamic demands of a growing company.

What is a software engineer startup?

A Software Engineer Startup job involves developing, testing, and maintaining software in a fast-paced, early-stage company. Engineers in startups often wear multiple hats, working on both backend and frontend development, infrastructure, and sometimes even product decisions. The role requires adaptability, problem-solving skills, and the ability to work with limited resources. Unlike larger companies, startup engineers may need to prototype quickly, iterate based on user feedback, and contribute to the overall growth strategy. This position is ideal for those who enjoy dynamic environments and taking ownership of projects.

What can I expect from the daily work environment as a software engineer at a startup?

Working as a Software Engineer at a startup typically means you'll be part of a small, agile team where roles and responsibilities can shift quickly based on company needs. You'll often participate in daily stand-ups, collaborate closely with founders or product leads, and have the opportunity to contribute ideas beyond your core coding tasks. The pace is usually fast, and you'll likely wear multiple hats, working on everything from prototyping new features to troubleshooting production issues. This hands-on, collaborative atmosphere provides excellent opportunities for skill growth, creative problem-solving, and making a visible impact on the company's direction.

What are the most commonly searched types of Software Engineer Startup jobs in Ontario?

The most popular types of Software Engineer Startup jobs in Ontario are:

What are popular job titles related to Software Engineer Startup jobs in Ontario?

For Software Engineer Startup jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Software Engineer Startup jobs in Ontario look for?

The top searched job categories for Software Engineer Startup jobs in Ontario are:

What cities in Ontario are hiring for Software Engineer Startup jobs?

Cities in Ontario with the most Software Engineer Startup job openings:

Software Engineer Startup jobs near you
Infographic showing various Software Engineer Startup job openings in Ontario as of August 2026, with employment types broken down into 2% Internship, 92% Full Time, 2% Part Time, and 4% Contract. Highlights an 93% In-person, 2% Hybrid, and 5% Remote job distribution.

Senior Software Engineer, Windows/Desktop Applications - Ottawa, Canada

Speechify

Ottawa, ON • On-site

Full-time

This job post has expired 1 day ago. Applications are no longer accepted.

Job description

Mission

The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify's text-to-speech products to turn whatever they're reading - PDFs, books, Google Docs, news articles, websites - into audio, so they can read faster, read more, and remember more. Speechify's text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.  

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting - Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies

What You'll Do
  • Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI (or related UI frameworks), C#, XAML, and - when needed - C++.
  • Define and enforce best-practices for Windows desktop development across the codebase: code architecture, performance, memory usage, responsive UI, cross-version compatibility (Windows 10/11+), and maintainability.
  • Drive accessibility efforts: integrate and validate support for accessibility APIs (e.g. Microsoft UI Automation or other relevant Windows accessibility frameworks), ensure UI controls, focus management, keyboard navigation, screen-reader support, and usability for users with disabilities.
  • Collaborate closely with product designers, UX researchers, QA, and other stakeholders to shape feature planning, UI/UX architecture, and long-term roadmap for the Windows platform.
  • Take ownership of full lifecycle of features: conception design implementation testing release maintenance. Ensure quality, reliability, and consistency across releases.
  • Identify, diagnose, and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues, or compatibility problems - and propose robust architectural or design solutions.
 
An ideal candidate should have

Required:

  • 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML - and ideally additional experience with native Windows code (C++, Win32/WinRT/COM).
  • Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
  • Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability.
  • Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
  • Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant).
  • Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions.
  • Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus.
  • A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

Preferred / Bonus:

  • Experience with writing automated tests for UI - unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
  • Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load).
  • Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions.
  • Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
  • Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
  • Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management.

What we offer

  • A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
  • A collaborative, flat-structure engineering culture - you are not just a coder, but a builder and a decision-maker.
  • Opportunities to lead - mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
  • Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
  • A purpose-driven mission: building software that's reliable, accessible, and user-centered - making a real difference for people.                  

Think you're a good fit for this job? 

Tell us more about yourself and why you're interested in the role when you apply.
And don't forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit? 
Refer them! 

Speechify is committed to a diverse and inclusive workplace. 
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Apply