Ai Full Stack Developer Jobs in Toronto, ON (NOW HIRING)

Responsibilities

• Lead the design and implementation of the new platform architecture — from legacy systems to modern stacks
• Build and integrate AI-powered features into the core product
• Collaborate directly with leadership on architecture decisions, technical priorities, and product roadmap
• Set code standards, review practices, and engineering culture on a small team
• Own integrations with external APIs and third‑party systems
• Maintain business continuity during migration phases — zero downtime wherever possible

Must-Haves

• Full-stack proficiency: strong backend (Node.js, Python, or equivalent) AND frontend (React or Vue) — required
• Demonstrable experience replatforming or migrating legacy systems to modern architectures
• AI-first workflow: regular use of AI coding tools (Copilot, Cursor, Claude, etc.) in day‑to‑day development
• REST API design, relational database design, and SQL
• Git, CI/CD pipelines, and cloud environments (AWS or Azure)
• Ability to operate with genuine ownership in a lean, low-process team

Nice to Have

• Experience with the hospitality industry or B2B SaaS products
• Microservices or event-driven architecture experience
• Familiarity with observability tooling: Datadog, Sentry, or equivalent
• Hands‑on experience with LLM APIs (OpenAI, Anthropic, etc.) or AI agents in production
• Technical English sufficient for documentation and corporate team communication

Who This Is NOT For

Junior or early‑career developers — this role requires genuine mid-senior depth

Specialists: pure frontend engineers, pure backend engineers, or pure data engineers

Candidates who haven't shipped production code recently or who rely on heavy team scaffolding

Anyone who views AI coding tools as a threat rather than a multiplier

Business Unit

Avance

Scheduled Weekly Hours

40

Number of Openings Available

1

Worker Type

Regular

Career Site

More About Jonas Software

More About Jonas Software

Jonas Software is a leading provider of enterprise management software solutions, serving a wide range of vertical markets including hospitality, healthcare, construction, education, personal care, fitness, leisure, moving and legal services, to name a few. Within these markets, Jonas is comprised of over 65 distinct brands, each a respected leader in its domain. Jonas’ vision is to be the branded global leader across these verticals and to be recognized by customers and industry stakeholders as the trusted provider of “Software for Life.” We are committed to technology, product innovation, quality, and exceptional customer service. Jonas Software supports over 60,000 customers in more than 30 countries. We employ over 6,000 skilled professionals, including industry experts and technology specialists. Across our broader network, we support a global workforce of more than 30,000 employees. Headquartered in Canada, Jonas Software has a global footprint with offices around the world. We’re a 100% owned subsidiary of Constellation Software Inc., based in Toronto, publicly listed on the TSX (CSU.TO), and a member of the S&P/TSX 60 Index.

IS THIS YOU?

At Vesta, we have long realised that our greatest asset is our employee base. As such we strive to provide our team with a fantastic working environment and an enriching career, which we know will translate into world‑class service to our valued clients. This allows Vesta Software Group to maintain and extend our lead as the premier software and services provider in each of our markets. If being part of a growing organization that moves at a fast pace and constantly strives to get better each and every day is what you are looking for, then we want to hear from you. Everyone has heard the sports analogy “to be the best, you have to beat the best”; well at Vesta Software Group we have tweaked that slightly to fit vertical market software. We believe to be the best you have to hire and retain the best!!! Vesta Software Group is an Equal Opportunity Employer.

If you need accommodation for a disability at any stage of the application process or want more information on our accommodation policies, contact recruitment at careers@jonashr.com

Vesta Software Group is part of a CSI group of companies.