Senior TypeScript Developer to design and build scalable applications using TypeScript, distributed architectures, and API design

Our investment management client is seeking a Senior TypeScript Developer (10+ years) to design and build scalable applications using TypeScript, distributed architectures, and API design

Join a software development team delivering scalable front-end and back-end applications within the financial services sector. This role focuses on TypeScript development, architectural decision-making, distributed systems, API design, and mentoring developers across complex engineering initiatives. The position offers hands‑on involvement in scalable application development, performance optimization, and cross‑functional collaboration.

Permanent, Toronto, Working Hours: EST

Hybrid: 4 times a week on site (near Union Station)

Must Haves

- 10+ years of professional software development experience.
- 5+ years of extensive TypeScript experience in production environments.
- Experience withNode.js and back-end TypeScript development.
- Extensive experience designing and building distributed architectures and microservices.
- Expert-level knowledge of API design principles, RESTful APIs, and/or GraphQL.
- Strong proficiency with PostgreSQL, including schema design, query optimization, and performance tuning.
- Experience with version control systems (Git) and collaborative development workflows.
- Strong knowledge of testing frameworks (Jest, Mocha, or similar).
- Excellent problem-solving and debugging skills.
- Robust communication skills and ability to work collaboratively in a team environment.

Nice to Have

- Experience with modern build tools (Webpack,



Vite, Rollup) and module bundlers.
- Knowledge of containerization technologies (Docker, Kubernetes).
- Experience with cloud platforms (AWS, Azure, or GCP).
- Familiarity with CI/CD pipelines and DevOps practices.
- Understanding of microservices architecture.
- Experience with monorepo management tools (Nx, Turborepo, Lerna).
- Contributions to open-source TypeScript projects.
- Experience with type-driven development and advanced TypeScript features.
- Knowledge of design patterns and software architecture principles.
- Experience leading technical initiatives or projects.

Responsibilities

- Design, develop, and maintain robust TypeScript applications across front-end and back-end systems.
- Write clean, maintainable, and well-tested code following best practices and design patterns.
- Architect scalable solutions and make technical decisions that align with business objectives.
- Conduct thorough code reviews and provide constructive feedback to team members.
- Mentor junior and mid-level developers, fostering their technical growth.
- Collaborate with product managers, designers, and other stakeholders to translate requirements into technical solutions.
- Optimize application performance and identify bottlenecks.




- Stay current with TypeScript ecosystem developments and recommend new technologies or approaches.
- Contribute to technical documentation and coding standards.
- Participate in agile ceremonies including sprint planning, standups, and retrospectives.

Salary Range: $135 000 - $175 000 plus bonus

Our investment management client is seeking a Senior TypeScript Developer (10+ years) to design and build scalable applications using TypeScript, distributed architectures, and API design

Join a software development team delivering scalable front‑end and back‑end applications within the financial services sector. This role focuses on TypeScript development, architectural decision-making, distributed systems, API design, and mentoring developers across complex engineering initiatives. The position offers hands‑on involvement in scalable application development, performance optimization, and cross‑functional collaboration.

Permanent, Toronto, Working Hours: EST

Hybrid: 4 times a week on site (near Union Station)

Must Haves

- 10+ years of professional software development experience.
- 5+ years of extensive TypeScript experience in production environments.
- Experience withNode.js and back-end TypeScript development.
- Extensive experience designing and building distributed architectures and microservices.
- Expert-level knowledge of API design principles, RESTful APIs, and/or GraphQL.
- Strong proficiency with PostgreSQL, including schema design, query optimization, and performance tuning.
- Experience with version control systems (Git) and collaborative development workflows.
- Stro

📌 Senior TypeScript Developer to design and build scalable applications using TypeScript, distributed architectures, and API design (Toronto)
🏢 S.I. Systems
📍 Toronto