Ruby Rail Developer jobs

Senior Cloud / AI Developer – Train Control , Operational Technology

At CN, everyday brings new and exciting challenges. You can expect an interesting environment where you’re part of making sure our business is running optimally and safely―helping keep the economy on track. We provide the kind of paid training and opportunities that long-term careers are built on and we recognize hard workers who strive to make a difference. You will be able to thrive in our close-knit, safety-focused culture working together as ONE TEAM. The careers we offer are meaningful because the work we do matters. Join us!

Job Summary

CN is seeking a Senior Cloud / AI Developer to design, build, and operate scalable cloud native and AI-enabled solutions that support enterprise platforms and business critical initiatives. This role plays a key part in advancing CN’s cloud and artificial intelligence capabilities while ensuring solutions are secure, resilient, and aligned with enterprise standards.

The successful candidate will combine strong software engineering expertise with hands on cloud and AI experience, while providing technical leadership within cross functional delivery teams.

Key Responsibilities

Cloud & Application Development

• Design, develop, and maintain cloud native applications and services using modern architectures (microservices, APIs, event driven patterns).
• Build and automate cloud environments and deployment pipelines using standardized, repeatable configuration and automation practices to enable secure and reliable deployments
• Ensure solutions meet performance, availability, security, and operational requirements.

• Collaborate with product, architecture, DevSecOps, and quality teams to deliverend-to-end solutions aligned with business needs.

AI & Generative AI Enablement

• Develop and integrate AI and Generative AI capabilities into applications and platforms, including model and API based consumption.
• Support the AI lifecycle, from experimentation and validation to deployment and monitoring.
• Ensure AI solutions align with enterprise governance, security, and responsible AI principles.

Engineering Excellence

• Apply software engineering best practices, including clean code, automated testing, secure coding, and design patterns.
• Contribute to technical standards, reusable components, and reference architectures.
• Identify and address technical risks, quality gaps, and performance issues early in the delivery lifecycle.

Technical Leadership & Collaboration

• Act as a technical mentor and leader, supporting the growth and development of other engineers.
• Provide hands‑on guidance during design reviews, solution walkthroughs, and complex problem resolution.
• Work effectively in agile or scaled agile delivery environments, partnering closely with Product Owners and business stakeholders.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• 7+ years of experience in software development, including significant experience delivering cloud‑based solutions.
• Strong programming skills in Python, Java, or JavaScript/TypeScript.
• Hands on experience with at least one major cloud platform (Azure, Google Cloud, or AWS).
• Experience with CI/CD, DevOps practices, and containerized environments.
• Practical knowledge of AI / ML or Generative AI concepts, including integrating AI services into applications.
• Solid understanding of cloud security, identity, and access management.

• Experience with enterprise AI platforms (e.g., Vertex AI, Azure AI, or equivalent).
• Exposure to data platforms, analytics, or event streaming technologies.
• Familiarity with AI governance, responsible AI, and regulatory considerations.
• Experience working in large, complex enterprise environments.

About CN

CN is a premium railroad that sustainably generates value for our customers, shareholders, employees, and stakeholders with an unwavering commitment to safety and service. Essential to the economy, to the customers, and to the communities it serves, CN safely transports more than 300 million tons of natural resources, manufactured products, and finished goods throughout North America every year. CN's network connects Canada's Eastern and Western coasts with the U.S. South through a 20,000-mile rail network. CN and its affiliates have been contributing to community prosperity and sustainable trade since 1919. CN powers the North American economy and is committed to programs supporting social responsibility and environmental stewardship.

At CN, we are dedicated to building North America's safest, most inclusive and sustainable railroad, which includes reflecting the communities in which we operate. Research shows that candidates often don't apply unless they feel they fit the job posting at 100%. To all potential applicants, even if you don't meet every job requirement listed in a posting, we still encourage you to apply. If you require an accommodation for the recruitment process (including alternate formats of materials, accessible meeting rooms or other accommodations), please get in touch with our team at cnrecruitment@cn.ca.

As an equal opportunity employer, qualified candidates will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, and other protected status as required by applicable law.

Please monitor your email on a regular basis as communication to applicants is done via email.