Senior Backend Engineer

Job not on LinkedIn

🕒 March 20

🇨🇦 Canada – Remote

💵 $150k - $170k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 35%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Jonas Software

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

🏗️ Construction

💼 Consulting

🏥 Healthcare

Construction • Consulting • Healthcare

Jonas Software is a prominent acquirer of vertical market software companies, with a rich history of over 20 years. The company focuses on mission-critical software solutions across various industries, aiming to provide business tools and a network for growth. Jonas Software operates under a decentralized structure, allowing acquired companies to maintain their autonomy while tapping into Jonas's extensive experience and best practices. They adhere to a 'buy & hold forever' strategy, ensuring long-term stability and a permanent home for acquired businesses. With more than 130 successful acquisitions under its belt and being part of Constellation Software, Jonas Software emphasizes preserving the legacy and culture of the companies it acquires, fostering a culture of sharing and leveraging expertise in vertical market software.

📋 Description

• 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

🎯 Requirements

• 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

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