Senior software developer Jobs in Saint-Constant, QC

Randstad Digital is actively seeking a Senior Software Engineer – Intelligent Automation & Agentic AI on behalf of our client, a prominent leader in the Canadian financial services and insurance industry.

In this senior advisory and development role, you will architect, build, and deploy enterprise-grade intelligent automation and autonomous AI agent networks. Operating within a highly governed and secure framework, you will champion modern development practices, introduce reusable components, and establish resilient software architectures. We are seeking a technical leader who combines profound backend engineering expertise with the ability to mentor teams, drive cross-functional alignment, and embody an organizational culture centered on excellence, collaboration, and client focus.

Advantages
Flexible Hybrid Work Model: Enjoy an optimal balance between remote productivity and collaborative in-office teamwork in Montreal.

Compelling Compensation Package: Base salary starting range between $101,800 - $124,400 (flexible based on expertise), combined with a high-reward performance-based annual bonus structure targeting 12% (with potential multiplier up to double the target).

Premier Wealth Accumulation: Industry-leading company matching programs for equity purchases (up to 50% employer match) and robust savings programs.

Long-Term Security: Rare access to a prestigious, secure Defined Benefit Pension Plan providing guaranteed lifetime retirement income.

Comprehensive Wellness & Time Off: Comprehensive physical and mental health coverage, virtual healthcare access, dedicated wellness funds, and the flexibility to purchase up to 5 additional days of annual leave.

Responsibilities
Agentic AI & Automation Engineering: Architect and deliver robust automation products and multi-agent AI ecosystems integrated into core business operations. Build scalable Python services, asynchronous APIs, and complex workflows orchestrating state-of-the-art LLM frameworks (e.g., LangGraph, LangChain, CrewAI, Semantic Kernel, and emerging technologies).

Guardrails & System Evaluation: Establish sophisticated evaluation structures to mitigate hallucinations, ensure prompt reliability, and validate tool execution. Design policy-based routing, input/output validation, and Retrieval-Augmented Generation (RAG) frameworks, alongside implementing Model Context Protocol (MCP) servers.

Engineering Excellence & platform Standards: Author clean, testable, and highly documented code utilizing SOLID principles and clean architecture. Build for comprehensive operational observability (metrics, logs, traces, alerts) and design optimized, secure CI/CD pipelines.

Risk, Security, and Compliance by Design: Partner with security and governance teams to ensure all solutions comply with enterprise data classification, least-privilege access, and disaster recovery strategies.

Technical Leadership & Mentorship: Elevate the engineering team’s capabilities through rigorous code reviews, pair programming, and constructive feedback. Lead architectural debates, author Architectural Decision Records (ADRs), and guide stakeholder communication with composure.

Qualifications
10+ years of professional, full-lifecycle software development experience.

Expert-level mastery of Python and its ecosystem for enterprise-grade applications.

Deep proficiency in API design (RESTful, asynchronous services), integration patterns, advanced data structures, and algorithmic optimization for high scalability.

Rigorous background in automated testing frameworks (unit, integration, contract, and end-to-end testing) and robust Git-based version control workflows.

Candidates must be legally authorized to work in Canada; prior local Canadian experience is a plus but not mandatory.

Our client operates in Canada. The company takes all reasonable steps to limit the number of positions in Quebec that require knowledge of a language other than French, and only requires it when necessary and its existing bilingual employees are unable to perform these duties. Based on an assessment conducted by our client, it has been determined that this position requires candidates to be fluent in English (both spoken and written). In particular, this position will require the employee to interact with centralized internal departments (e.g., Operations / HR / Finance / Legal / Contracts / Sales) that support the organization in Canada and that do not speak French.

Summary
Location: Montreal, QC (Hybrid)

Position Type: Full-time, Permanent

Industry: Financial Services / Insurance

Work Week: 35 Hours

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to accessibility@randstad.ca to ensure their ability to fully participate in the interview process.