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Sr Full Stack Web Developer Jobs in Ontario (NOW HIRING)

You will work on a high performing team of Senior Full Stack Engineers where you will be building a revolutionary new Banking App. \n \n \n \n \n \n Requirements: You will have hands on commercial ...

Role Overview We're looking for a Senior Full Stack Engineer who is excited to build products in a ... Have 4+ years building production web applications, APIs, or full-stack products * Are comfortable ...

We are looking for an experienced Senior Full-Stack (React & Node) Developer for our client. This is a permanent position that is completely remote! Our client is a fintech company based out of ...

We are looking for an experienced Senior Full-Stack (React & Node) Developer for our client. This is a permanent position that is completely remote! Our client is a fintech company based out of ...

Senior Full Stack Engineer

Toronto, ON ยท Hybrid

CA$120K - CA$145K/yr

Experience with Python, Blazor, Razor components, or related Microsoft web technologies ... SQL Server, Azure Data Factory * DevOps: Azure DevOps, Git, CI/CD pipelines Additional Information:

Embrace emerging technologies and keep abreast of new frameworks, tools and programming languages ... In\-depth experience with several full stack technologies such as Spring, Spring\-Boot, Spring\-Web ...

The Senior Full stack Developer determines methods and approaches to projects, transforming business requirements specifications into programming instructions, designing, coding and testing programs.

The Senior Full stack Developer determines methods and approaches to projects, transforming business requirements specifications into programming instructions, designing, coding and testing programs.

\n \n \n \n \n Role Overview The primary responsibility of the full stack developer, in ... In\-depth experience with several full stack technologies such as Spring, Spring\-Boot, Spring\-Web ...

Full Stack Software Developer

Oakville, ON ยท Hybrid

CA$80K - CA$90K/yr

Our client is seeking a skilled Full Stack Software Developer with 5+ years of experience to join ... You will be responsible for designing, developing, and maintaining scalable web applications ...

Senior Full-Stack Engineer, AI Platform The Opportunity Chubb's AI Platform team is building an enterprise AI platform that powers RAG-based search, document intelligence, and AI-assisted workflows ...

The Application Development team is seeking a Senior Full Stack Application Developer to support ... Design, develop, test, and maintain enterprise web applications using modern Microsoft technologies

Collaborate with DevOps teams to deploy and maintain web applications in production environments ... The position reports to our Senior Full Stack Engineer. Challenge Test * Dev Team-code-challenge ...

The Application Development team is seeking a Senior Full Stack Application Developer to support ... Design, develop, test, and maintain enterprise web applications using modern Microsoft technologies

Showing results 41-60

Sr Full Stack Web Developer information

What does a Sr Full Stack Web Developer do?

A Sr Full Stack Web Developer is responsible for designing, building, and maintaining both the front-end (client-side) and back-end (server-side) components of web applications. They work with various programming languages, frameworks, and databases to create seamless and efficient user experiences. In addition to coding, they often lead technical projects, mentor junior developers, and help shape the overall architecture of web solutions. Their role requires a deep understanding of both user interface design and server-side logic, ensuring that all parts of a web application function together smoothly.

What are the key skills and qualifications needed to thrive as a Sr Full Stack Web Developer?

To thrive as a Sr Full Stack Web Developer, you need advanced proficiency in both front-end (e.g., HTML, CSS, JavaScript frameworks) and back-end (e.g., Node.js, Python, databases) development, typically supported by a degree in computer science or related experience. Familiarity with tools such as Git, cloud platforms (AWS, Azure), RESTful APIs, and relevant certifications like AWS Certified Developer are commonly required. Strong problem-solving skills, effective communication, and the ability to mentor junior developers are essential soft skills for this role. These competencies ensure you can deliver robust, scalable solutions while collaborating efficiently within multidisciplinary teams.

How does a Sr Full Stack Web Developer typically collaborate with cross-functional teams during a project lifecycle?

As a Sr Full Stack Web Developer, you will frequently collaborate with UX/UI designers, product managers, QA engineers, and sometimes DevOps specialists throughout a project's lifecycle. You may participate in sprint planning, code reviews, and daily stand-ups, ensuring alignment on project goals and technical requirements. Effective communication is key, as you'll often translate business needs into technical solutions and provide guidance to junior developers. This collaborative environment supports the delivery of robust, user-friendly web applications and fosters professional growth through shared knowledge.

What is the difference between Sr Full Stack Web Developer vs Full Stack Web Developer?

AspectSr Full Stack Web DeveloperFull Stack Web Developer
Required Experience5+ years, leadership skills often expected1-3 years, focus on development skills
ResponsibilitiesDesigning complex systems, mentoring, project leadershipBuilding features, coding, debugging
CertificationsOptional, but advanced certifications valuedEntry to mid-level certifications
Work EnvironmentFast-paced, collaborative teams, often in tech companies

The main difference between a Sr Full Stack Web Developer and a Full Stack Web Developer lies in experience, responsibilities, and leadership. Senior developers typically have more experience, handle complex projects, and mentor others, while full stack developers focus on coding and feature development. Both roles are essential in tech industries, but senior roles require a broader skill set and leadership capabilities.

What are popular job titles related to Sr Full Stack Web Developer jobs in Ontario? For Sr Full Stack Web Developer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Sr Full Stack Web Developer jobs in Ontario look for? The top searched job categories for Sr Full Stack Web Developer jobs in Ontario are:
What cities in Ontario are hiring for Sr Full Stack Web Developer jobs? Cities in Ontario with the most Sr Full Stack Web Developer job openings:
Infographic showing various Sr Full Stack Web Developer job openings in Ontario as of June 2026, with employment types broken down into 89% Full Time, 7% Part Time, and 4% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Full-Stack Web Development Expert (Cross-Platform Focus) - Subject Matter Expert

Vosyn

Etobicoke, ON โ€ข Remote

$250/hr

Full-time

Re-posted 21 days ago


Job description

Job Title: Full-Stack Web Development Expert (Cross-Platform Focus)

Level: Senior SME

Department: Software Development

Status: Contract (10-15 hours/week)

Work location: Fully Remote

Compensation: Hourly ($250)

Company Overview: At Vosyn, we embrace the exciting, game-changing world of Artificial Intelligence, driving innovation and pioneering impactful projects across various industries. Our incubator, AI Venture Lab, nestled in the heart of Office146.com, is a crucible of entrepreneurial spirit, supported by intelligent processes and industry-leading best practices. We believe in fostering a culture of flexibility, continuous improvement, and solution-focused strategies. Here, every idea is welcomed, nurtured, and has the potential to scale to new heights. Currently, we're at the forefront of a significant IPO endeavor, a truly unicorn in the making. We invite you to be part of our journey and leave your imprint on the future of AI. At Vosyn, you will have the opportunity to engage with a fast-growing global organization with diversity of thought, experience, and cultures.

About the Role: We are seeking an experienced Full-Stack Web Development Expert to serve as a trusted advisor and mentor for our tech leads and team leads. In this role, you will provide strategic technical guidance across the entire web development stack, sharing your deep expertise in modern web technologies, architectures, and full-stack development best practices. Your guidance will ensure our projects are performant, scalable, maintainable, and aligned with industry standards, particularly in the realm of cross-platform application development.

Key Responsibilities:

  • Guide the team in evaluating and adopting optimal tech stacks for full-stack web development, considering both current and emerging technologies, with a focus on cross-platform compatibility
  • Provide expert-level mentorship on all aspects of cross-platform web application development, from front-end frameworks and state management to back-end architecture and API design
  • Lead architectural decisions and design patterns to optimize scalability, performance, maintainability, and security across the entire application stack
  • Advise on database selection and management strategies, including both SQL and NoSQL solutions
  • Share best practices for API design and development, including RESTful principles, versioning, and documentation
  • Offer guidance on implementing media streaming solutions using DASH and HLS
  • Provide expertise in implementing robust authentication and authorization mechanisms
  • Share insights on front-end performance optimization techniques and testing methodologies

Required Qualifications:

  • 7+ years of proven experience in full-stack web application development, with emphasis on cross-platform applications
  • Strong proficiency in modern JavaScript frameworks like Next.js and React; familiarity with Electron
  • In-depth understanding of client-server architecture, containerization using Docker, backend REST API development
  • Expertise in Django and Python
  • Experience with both relational (PostgreSQL, MySQL) and non-relational (MongoDB, Cassandra) databases
  • Hands-on expertise in implementing media streaming solutions using DASH and HLS
  • Proven experience in implementing secure coding practices and authentication/authorization mechanisms
  • Strong understanding of various testing methodologies and tools
  • Demonstrated success in providing technical leadership and mentoring
  • Excellent communication and problem-solving skills

Preferred Qualifications:

  • Experience with WebSocket-based real-time systems
  • Expertise in front-end performance optimization techniques
  • Experience with cloud deployment and scaling strategies
  • Knowledge of modern state management solutions
  • Experience in mentoring development teams

Additional Perks:

  • Be part of the invigorating journey of a pre-seed AI startup in stealth mode
  • Engage directly with senior management and strategic advisory board members
  • Gain valuable experience in the bleeding-edge AI space
  • Remote-first culture with flexible working arrangements

DEI and Workplace Safety: At Vosyn Inc., we are committed to fostering a diverse, equitable, and inclusive workplace where every employee feels valued and supported. We believe that diversity of thought, background, and experience enriches our company culture and enhances innovation. We are an equal-opportunity employer and encourage candidates from all walks of life to apply. As part of our commitment to creating a safe and healthy work environment, we prioritize workplace safety, adhering to all relevant regulations and promoting a culture of responsibility. We believe that a safe and inclusive workplace is essential for the well-being and success of our team members.

Recruitment Process:

  1. Initial Screening: Review of application and preliminary assessment
  2. Video Interview: In-depth discussion of technical expertise and role expectations
  3. Technical Panel Interview: Deep dive into technical experience and approach to architecture/design challenges
  4. Final Selection: Assessment of overall fit and alignment
  5. Offer and Onboarding: Equity compensation details and onboarding process.

Join a dynamic global organization that champions diversity in thought, experience, and culture. Our team is composed of top experts from around the world. We invite you to leverage your expertise, mentor future leaders, and thrive with us in this exciting journey.


Apply Now:
Please apply via our career site: Vosyn Careers

Employment Type: FULL_TIME