Senior Full-Stack Developer – Backend-Leaning (Platform & Monetization) Toronto, On

(TORONTO) -Senior Full-Stack Developer Backend-Leaning (Platform & Monetization)

AboutDokainish& Company

Since2011Dokainish& Company has been providing world class professional consultancy services.

We specialize in working diligently and collaboratively with our clients to achieve long-lasting and impactful results acrossnumerousbusiness areas of expertise include but are not limited to Project Management Quantitative Risk Analysis Organizational Change Management Project Controls Enterprise Reporting Estimating Asset Management and System Implementation for Capital draw upon decades of project experience to deliver customized solutions to our clients most complex challenges.

We are a fast-growing organization currently seekingSenior Full-Stack Developer to take a foundational role in building and operating enterprise-grade SaaS platforms.

IMPORTANT: Please provide a link to one or more of the following: GitHub profile technical portfolio architecture documentation or public project write-up on your resume.

Role Overview

You will own key areas including platform infrastructure payments and subscriptions deployment processes security and AI-enabled backend capabilities while continuing to build core product features.

This role requires broad ownership across the full software lifecycle and strong engineering judgment.

This is a full-time non-remote position based in Toronto Ontario Canada.

Key Responsibilities:

Platform & Monetization

• Design and implement payment processing and subscription models

• Build andmaintainfeature entitlements access control and usage limits

• Ensure correctness across billing workflows (upgrades downgrades cancellations failures)

Deployment & Infrastructure

• Migrate applications from development environments to production infrastructure

• Set up andmaintaindevelopment staging and production environments

• Implement CI/CD pipelines secrets management and database migrations

• Ensure deployments are safe repeatable and observable

Security & Reliability

• Apply security-by-default principles across systems

• Implement RBAC audit logging and secure data handling

• Identifyand mitigate risks related to credentials data access and AI usage

AI Agents & Backend Integration

• Design and implement AI-backed services and agent workflows

• Manage prompt versioning validation logging rate limiting and cost controls

• Ensure AI outputs are reviewed andappropriate forproduction use

Continued Feature Development

• Build and evolve backend features alongside platform work

• Refactor and harden AI-assisted code whenrequired

• Maintain long-term code quality and maintainability

Collaboration & Mentorship

• Work in GitHub using feature branches pull requests and reviews

• Mentor junior developers through reviews pairing and design discussions

• Collaborate closely with the Engineering Manager and frontend-leaning full-stack developer

Required Skills & Experience

• 5 years of professional software development experience

• Strong TypeScript experience across backend and full stack

• Experience with relational databases and data modeling

• Experience building and operatingsecurity-conscious production systems

• Experience with SaaS billing systems

• Familiarity with Docker and cloud environments

• Exposure to Python for automation or backend tooling

• Experience working with AI agents or AI-driven workflows

• Strong GitHub collaboration experience

• Comfort owning requirements development testing and deployment

Working Arrangements

• Must be based in Toronto Ontario or willing torelocate.

• This is a full-time non-remote position based in Toronto Ontario Canada.

• Legally eligible to work in Canada.

We are highly skilled when moving ideas intoactionsandempowereach other to deliver outstanding results. If you believe your skillset drive qualifications and experienceisa match we welcome your application andcantwait to hear from you.

We thank all applicants for their interest in joiningDokainish& Company pleasenote only those candidates considered foran initialinterview will be contacted.

Dokainish& Company is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to age gender racecolour religion sexual orientation gender identity national origin disability age and veteran status or any other protected status required by applicable law.

In accordance withthe Ontario Human Rights Code Accessibility for Ontarians with Disabilities Act 2005 andDokainish& Company AODA Policy accommodation will be provided in all parts of the hiring process. Applicants need to make their needs known in advance.