High Tech Genesis
Senior Front-End / Full-Stack Engineer
Skills
19 days ago
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Important information
Contract type:
Freelance / Contract
Location:
Ottawa, ON, Canada
Work mode:
Onsite
Published on:
2 October 2026
What they need
Job Overview
We are seeking a Senior Front-End / Full-Stack Engineer to build and enhance modern enterprise web applications. This role has a strong focus on React and modern front-end development, with opportunities to contribute across APIs, backend services, and full-stack features.
The ideal candidate is a senior engineer with strong React expertise who can work effectively across the application stack.
Key Responsibilities
- Design and develop modern, scalable web applications using React, JavaScript, and TypeScript.
- Build reusable, accessible, and maintainable UI components.
- Develop intuitive user interfaces and improve workflows, navigation, usability, and overall user experience.
- Develop and integrate REST APIs and backend services.
- Contribute to backend development using Ruby on Rails, Python, Go, or similar technologies.
- Deliver end-to-end features across front-end, backend, APIs, and data.
- Troubleshoot and optimize application performance and reliability.
- Write automated tests and participate in code reviews.
- Collaborate with product managers, designers, UX professionals, QA, architects, and engineering teams.
- Participate in Agile/Scrum development and contribute to technical design decisions.
Required Qualifications
- 5+ years of professional software development experience.
- Strong hands-on experience with React, JavaScript, and/or TypeScript.
- Strong knowledge of HTML5 and CSS3.
- Experience building production-quality web applications.
- Experience with REST APIs and backend services.
- Experience with at least one backend technology such as Ruby on Rails, Python, Go, Node.js, or Java.
- Experience with Git, automated testing, and modern development practices.
- Strong understanding of responsive design, web application architecture, and performance.
- Excellent problem-solving, communication, and collaboration skills.
Preferred Qualifications
- Experience with Ruby on Rails, Python, or Go.
- Experience with microservices or distributed systems.
- Experience with design systems and reusable component libraries.
- Experience with CI/CD, Docker, or cloud platforms.
- Knowledge of web accessibility and performance optimization.
- Experience with AI-assisted development tools.
- Experience working in an Agile/Scrum environment.
Applicants must be legally authorized to work in Canada. Accommodation is available upon request throughout the recruitment process
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