Iris's client, one of the world's largest multinational Investment banking and financial services corporations, is looking to hire a Senior Full Stack (Python, Node.Js, React.Js) for a long-term opportunity.

Work location: Toronto, ON (Hybrid onsite – 4 days a week office)

Job Description

What is the opportunity?

We're seeking a Senior Software Developer to join our engineering team. You'll design, build, and maintain scalable applications across our full technology stack, working with modern frameworks and cloud-native infrastructure. This role offers the opportunity to mentor junior engineers, influence technical direction, and take ownership of complex projects from conception through production.

What will you do? Develop and optimize full-stack applications using Next.js and React for frontend experiences, with Node.js and Python for backend services. Design and implement microservices architectures deployed on Kubernetes, leverage Redis for caching and real-time data handling, and work with MongoDB for data persistence. Beyond these core technologies, you'll evaluate and integrate new tools as business needs evolve. Responsibilities include writing clean, maintainable code; conducting code reviews; participating in architecture discussions; Collaborating cross-functionally with product and design teams; and ensuring applications meet performance, security, and reliability standards. Contribute to documentation, participate in on-call rotations, and help establish engineering best practices.

What you need to succeed?

Must Have

Strong professional software development experience with demonstrated expertise in both frontend and backend development. Production-level proficiency with React and Next.js, Solid experience building backend services with Node.js and/or Python, and hands-on experience containerizing and orchestrating applications with Kubernetes. Comfortable working with MongoDB and Redis in production environments. Demonstrate strong problem-solving skills, can communicate complex technical concepts clearly, and have experience working in collaborative, fast-paced environments.

Nice to Have

Experience with DevOps practices, CI/CD pipelines, and infrastructure-as-code tools. Familiarity with cloud platforms (AWS, GCP, or Azure). Background with GraphQL, message queues, or event-driven architectures. Track record of learning and working effectively with emerging technologies. Experience mentoring or leading junior developers.