Senior Software Engineer: AI Integration & Modernization

Jonas Software; Markham; On-site; CAD 120,000 - 170,000; Full time

Job summary

Jonas Software in Canada seeks a Senior Software Engineer to own the design and delivery of production AI capabilities across a broad portfolio of software businesses. You will work with product and engineering leaders to translate challenges into scalable, reliable AI-enabled solutions, across legacy and cloud systems.

This hands-on role requires taking ownership, working across varied environments, and shaping reusable patterns to guide AI adoption throughout Jonas’s technology stack.

Qualifications

• 5+ years of experience building and operating production software systems.
• Exposure to AI/LLM‑based systems such as prompt orchestration, retrieval‑augmented workflows, embeddings, or similar production use cases.
• Ability to work across the full stack: backend services, front‑end components, cloud infrastructure, and AI integrations.
• Clear communication with technical and non‑technical stakeholders.
• Strong ownership mindset with the ability to deliver practical solutions quickly and iterate based on feedback.

Responsibilities

• Lead discovery with business units to understand workflows, identify high-value opportunities, and translate needs into clear technical solution designs.
• Design and build AI‑enabled systems and full‑stack components including APIs, integrations, data pipelines, retrieval systems, and user‑facing interfaces.
• Deliver end‑to‑end implementations from prototype through production deployment, ensuring successful rollout, user adoption, and measurable business impact.
• Implement modernization upgrades such as API layers, authentication improvements, async processing, and cloud services to enable AI integration across diverse legacy and modern platforms.
• Diagnose, evaluate, and optimize AI features and supporting systems by monitoring performance, accuracy, latency, reliability, and cost efficiency.
• Build solutions that integrate deeply with existing BU systems including SaaS products, on‑prem platforms, ERPs, and CRMs, resolving complex issues across back‑end services, data flows, and LLM operations.
• Turn one‑off solutions into reusable components, templates, and patterns that make it easier to roll out AI capabilities across additional business units.
• Help develop playbooks and provide training to enable Business Units to take ownership of AI solutions before moving on to new projects.

Skills

APIs integration

AI/LLM

Full stack

Cloud infrastructure

Distributed systems

Ownership mindset

Clear communication

Tools

APIs

Databases

Cloud platforms

Job description

Jonas Software in Canada seeks a Senior Software Engineer to own the design and delivery of production AI capabilities across a broad portfolio of software businesses. You will work with product and engineering leaders to translate challenges into scalable, reliable AI-enabled solutions, across legacy and cloud systems.

This hands-on role requires taking ownership, working across varied environments, and shaping reusable patterns to guide AI adoption throughout Jonas’s technology stack.