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Senior Backend Engineer

Jonas Software -
Remote

Apply Now

Job details

Full-time
$130,000–$170,000 a year

Qualifications

DevOps
C#
.NET
AWS
Docker
PostgreSQL
Terraform
RabbitMQ
SaaS
AI

Full job description

Job Description:

Senior Software Engineer (AI-First, Agentic AI)

Remote Canada

Compensation & Role Details

Expected Salary Range: $130,000 - $170,000 CAD, depending on experience and qualifications

Role Type: New Role

AI Disclosure: AI is used to screen, assess, or select applicants for this role

Overview

We’re a software company at the start of building a brand-new, highly visible SaaS application. This is a rare opportunity to help shape the technical foundation: you’ll help set technical direction, establish engineering standards, and ship foundational capabilities that will shape the product for years. We’re looking for a motivated senior engineer who thinks and builds with an AI-first mindset—someone excited about agentic AI workflows, automation, and using modern AI tooling to accelerate delivery without compromising quality. This project will be using AI-Development Life Cycle (AI-DLC) to drive the creation, testing and deployment of this application. This is a tremendous opportunity to be fully supported in an AI first approach.

In this role, you’ll design and implement core backend systems using .NET/C# and proven architectural patterns such as Event Sourcing, CQRS, Domain-Driven Design (DDD), and Vertical Slice (vertical event-sourced) architectures. You’ll work in a cloud-native environment leveraging AWS, PostgreSQL, RabbitMQ, and Docker, contributing to a platform built for scale, reliability, and rapid iteration. You’ll also be a technical leader—taking ownership, mentoring others, and helping define best practices for a high-performing team.

Responsibilities

Own major components of a new SaaS platform from design through production
Build event-sourced, CQRS-based services in C#/.NET using DDD principles
Design clean domain models, message contracts, and integration patterns using RabbitMQ
Deliver cloud-ready solutions using Docker and AWS (deployment, observability, reliability)
Apply an AI-first approach to engineering: agentic AI tools, automated workflows, code generation/review, test generation, and productivity accelerators
Partner with product and engineering leaders to define architecture, standards, and delivery practices
Write high-quality, well-tested, maintainable code and raise the bar through reviews and mentorship

Must Have

AI-first mentality with practical experience using AI tools to accelerate development
Senior-level experience building production systems with C#/.NET
Hands-on experience with Event Sourcing and CQRS in real-world systems
Strong working knowledge of Domain-Driven Design (DDD)
Experience with Vertical Slice architecture (or similar modular service boundaries)
Solid experience with PostgreSQL
Experience with asynchronous messaging and integration patterns, ideally RabbitMQ
Experience containerizing services with Docker
Experience building/operating cloud-hosted applications, ideally on AWS
Familiarity with agentic AI concepts (autonomous workflows, tool-using agents, orchestration, evaluation/guardrails) and excitement to apply them in day-to-day engineering
Strong ownership mindset: you ship, you improve, you operate, you lead

Nice to Have

Experience with MartenDB
Experience with Wolverine
Experience designing multi-tenant SaaS systems (auth, billing, isolation, scaling, observability)
Familiarity with modern DevOps/IaC practices (e.g., Terraform/CDK), CI/CD, and distributed tracing

#LI-VL1

Business Unit:

Computrition - Canada

Scheduled Weekly Hours:

37.5

Number of Openings Available:

Worker Type:

Regular

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.

Apply Now

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