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Full Stack Developer Startup Jobs in Ontario (NOW HIRING)

\n \n \n \n \n The successful Senior Full Stack Developer will assume ownership for a diversity of greenfield projects and mentor junior developers. \n \n \n \n \n \n This role will involve adding new ...

Position Full Stack Developer Location Toronto, ON (100% onsite) Employment Type New, Full-Time Permanent position Salary $110,000 - $125,000 (depending on experience) plus incentive compensation ...

Full-Stack Developer

Concord, ON · On-site

CA$80K - CA$100K/mo

Full-Stack Developer ⬝ In-office, full-time position in Vaughan ⬝ Relevant education only ⬝ Probation period: 3 months ⬝ Salary range depending on experience: CAD$80-100K About the role A ...

Full Stack Developer About the role: We are seeking a Full Stack Developer to design, develop, test, deploy, and support software solutions throughout the full software development lifecycle. You ...

\n \n \n \n \n Our client is looking for an experienced Full Stack Developer to join their team for a minimum of 6 months (fully remote). \n \n \n \n \n \n Requirements \n \n \n \n \n \n * 5+ years ...

Senior Full-Stack Developer Location: Ottawa, ON (Remote) About the Role We are looking for a Senior Full-Stack Developer to join one of our development squads and help build new features for the ...

We're looking for a passionate Senior Full-Stack Developer who wants to make a difference in a fast-growing startup. We are a B2B SaaS company that provides an AI-powered software platform for e ...

\n \n \n \n \n Our client is looking an experienced Full Stack Developer with experience in PHP and JavaScript (this role will be remote in the short term). \n \n \n \n \n \n The company is a great ...

\n \n \n \n \n My client, a world renowned, fortune 500 fintech company are seeking a full stack developer to join their team. \n \n \n \n \n \n Role Overview The primary responsibility of the full ...

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Full Stack Developer Startup information

What is the difference between Full Stack Developer Startup vs Front End Developer?

AspectFull Stack Developer StartupFront End Developer
Required SkillsProficiency in both front-end and back-end technologies, databases, and server managementSpecialized in client-side technologies like HTML, CSS, JavaScript, and frameworks like React or Angular
Work EnvironmentFast-paced startup setting, often wearing multiple hats, involved in full project lifecyclePrimarily focused on designing and implementing user interfaces and user experience
Common UsageUsed in startups needing versatile developers capable of handling entire applicationsUsed in teams focusing on UI/UX and front-end development within startups or larger companies

In summary, a Full Stack Developer Startup has a broader skill set covering both front-end and back-end development, suitable for dynamic startup environments. A Front End Developer specializes in creating engaging user interfaces, often working within larger teams or specific projects. The choice depends on the scope of work and technical expertise required.

Infographic showing various Full Stack Developer Startup job openings in Ontario as of August 2026, with employment types broken down into 82% Full Time, 13% Part Time, 4% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution.

Senior Full Stack Developer (Node.js + React.js)

STACK IT Recruitment

Kitchener, ON • On-site

Full-time

Posted 26 days ago


Job description

Build scalable SaaS solutions that make a real-world impact as a Senior Full Stack Developer (Node.js + React)

We're partnering with an established software company looking for a Senior Full Stack Developer to join a small, highly collaborative product team developing enterprise web applications used by organizations across the education, telecom and goverment sectors.

This role is ideal for someone who enjoys owning features from design through deployment. You'll work across the full stack using React on the frontend and Node.js on the backend, building REST APIs, integrating messaging services, designing microservices, and contributing to architectural decisions that shape the long-term direction of the platform.