Senior Full Stack Developer (React, TypeScript, Node.js, Postgres)
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on October 23rd, 2025
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Starting date : 1 position to fill as soon as possible
Description
We’re seeking a Senior Full Stack Developer with deep expertise in React, TypeScript, Node.js, and PostgreSQL to join our growing engineering team. You’ll play a key role in designing and building scalable web applications, mentoring team members, and driving technical excellence.
- Design, develop, and maintain full-stack applications using React, Node.js, TypeScript, and PostgreSQL.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Lead by example in writing clean, maintainable, and testable code.
- Mentor and coach junior developers, fostering a culture of learning and continuous improvement.
- Participate in architectural discussions and help shape the technical direction of the team.
- Optimize application performance and scalability.
- Contribute to code reviews, technical documentation, and agile ceremonies.
- 5+ years of professional experience in full-stack development.
- Strong proficiency in React.js and TypeScript.
- Solid backend experience with Node.js and PostgreSQL.
- Experience building and consuming RESTful APIs.
- Familiarity with modern development tools and practices (e.g., Git, CI/CD, testing frameworks).
- Excellent problem-solving skills and attention to detail.
- Strong communication and collaboration abilities.
- Experience with React Native for mobile development.
- Familiarity with GraphQL.
- Exposure to cloud platforms (AWS, GCP, Azure).
- Knowledge of containerization (Docker, Kubernetes).
Requirements
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