Python Developer Jobs in Calgary, AB (NOW HIRING)

Senior Developer

Olsen specializes in the implementation and optimization of enterprise resource management systems, particularly Vista ERP, for high-revenue construction companies across North America. As a trailblazer in the industry, our goal is to propel our clients toward digital transformation by automating and enhancing their business processes. We are committed to driving impactful changes through data analytics and technology, harnessing our collective expertise, innovation, and commitment to excellence. To further our mission, we are seeking an exceptionally skilled Senior Developer to join our team of professionals. This role focuses primarily on internal development and collaboration with internal teams, with a strong emphasis on technical leadership, long-term architectural strategy, and infrastructure ownership.

The ideal candidate brings strong technical maturity, with the ability to design and implement robust systems, make informed infrastructure and architectural decisions, and guide technical direction while remaining actively involved in development.

Key Responsibilities

- Collaborate with cross-functional teams to design, build, and enhance custom software solutions supporting ERP integrations, analytics, automation, and AI-driven workflows.

- Define and drive scalable application and data architecture, owning long-term technical strategy, roadmaps, and architectural direction across internal platforms.

- Lead technical decision-making across system architecture, cloud infrastructure, deployment strategies, and integration patterns.

- Design, build, and evolve scalable backend services, APIs, and system architectures, with a focus on performance, reliability, and maintainability.

- Own and evolve cloud infrastructure (Azure), including architecture, networking, security, identity and access management, and cost optimization.

- Proactively identify system-level risks and drive improvements in performance, reliability, scalability, and security, while troubleshooting and enhancing existing applications.

- Provide technical mentorship, contribute to system design and code reviews, and maintain clear and thorough documentation for architecture, infrastructure, and development workflows.

Essential Qualifications and Experience

- 7-10+ years of professional experience in software development across backend, frontend, and data-focused systems.

- Strong proficiency in C#/.NET and/or Python, with extensive experience building scalable APIs and backend services.

- Demonstrated experience designing system architecture and operating complex, production-grade systems.

- Strong experience with cloud architecture, particularly within Azure environments.

- Deep understanding of relational database design, performance tuning, and data architecture (SQL Server and/or PostgreSQL).

- Experience designing and managing cloud infrastructure, CI/CD pipelines, and containerized applications.

- Ability to demonstrate technical expertise through prior systems, projects, or architectural contributions.

Nice-to-Have Qualifications and Experience

- Hands-on experience with modern frontend frameworks and TypeScript/JavaScript.

- Experience designing data architectures that support scalability, performance, and long-term maintainability.

- Experience with backend performance optimization, scalability patterns, and distributed systems is a strong asset.

- Exposure to Data, AI, or ML solutions (e.g., OpenAI/LLMs, document processing, analytics pipelines) is considered a strong asset.

- Experience working within complex system integrations or ERP environments is highly preferred.

Must-Have Skills

- Ability to communicate technical ideas clearly with teammates and document work effectively.

- Strong problem-solving ability and systems-level thinking.

- Ability to take ownership of complex technical initiatives and make independent technical decisions from design through implementation across projects.

- Strong organizational skills and the ability to manage priorities across multiple technical initiatives.

- High level of integrity and ability to handle the confidentiality of sensitive information.
- Backend: C#/.NET, Python, Django, Azure Functions, SQL

- DevOps & Cloud: Azure Cloud, CI/CD pipelines, Docker

Nice-to-Have Skills

- Experience with frontend frameworks (React, Vue.js) and modern CSS frameworks (e.g., Tailwind)

- Data & AI: SQL Server, PostgreSQL, Redis (nice to have), OpenAI/LLMs, document processing, data integrations

Benefits of Working at Olsen

- Big thinking is the baseline. We hire curious people and then actually give them room to run.
- Remote flexibility that means what it says. Work where you work best, no asterisks.
- Growth that goes in the direction you want, not just the one that is convenient for us.
- Benefits shaped by the people who use them. Our team votes on what is offered and how it evolves.
- Straight talk at every level. You will always know where things stand and your voice will be heard.
- A team that genuinely enjoys the work. High standards, good people, and a culture worth showing up for.

Olsen is committed to recognizing the dignity and worth of every individual, offering equitable rights and opportunities to all our employees. We foster a culture of understanding and mutual respect.

If you are highly motivated, committed to continual learning, and excited to be a part of a growing firm, we invite you to submit your resume and cover letter. Please articulate why you are a remarkable candidate and what you are seeking from your next career move and employer.

We appreciate the interest of all applicants, but only those shortlisted will be contacted.