RQ09711- Full Stack Developer

Flexstaf IT; Toronto; On-site; CAD 100,000 - 130,000; Full time

Job summary

A technology staffing firm in Toronto is seeking a Senior Software Developer specializing in full-stack development. This role involves leading software projects, employing modern technologies including React.js and Python, and focusing on AI/ML integration. The ideal candidate has a comprehensive understanding of cloud architecture and robust problem-solving skills. Competitive compensation offered.

Qualifications

• Proven experience in engineering practices and leadership.
• Hands-on experience with software architecture principles.
• Direct experience with AI/ML development and deployment.

Responsibilities

• Lead software development efforts and mentor junior staff.
• Architect complex applications and optimize performance.
• Participate in solution design for microservices and web services.

Skills

React.js

Python

Node.js

.NET Core

Image manipulation

TensorFlow

PyTorch

Azure DevOps

Docker

Kubernetes

Typescript

CSS3/SCSS

MS Azure SQL Server

Tools

FastAPI

Java Spring Boot

OpenCV

Job description

Job Title: Software Developer - Full Stack - Senior

Must Have :

• You have advanced proficiency in React.js - functional components, hooks, state management with Context API, etc.
• You have strong proficiency in modern Python versions, and building REST API with FastAPI.
• Experience with Node.js, and Java Spring Boot.
• You have proven expertise with .NET Core Services / Web API, and C#
• Experience with image manipulation - ideal exp
• TensorFlow and PyTorch
• You have hands-on experience with software architecture principles and patterns such as serverless architecture, Microservices, RESTful APIs.
• Azure DevOps and building robust CI / CD pipelines

Experience and Skill Set Requirements

Engineering Practices. Communication and Leadership - 10%

You are experienced senior member of development team, leading by example, taking ownership in design and delivery with strong track record for meeting deadlines.

• You have proven experience establishing and applying best engineering practices and standards.
• You have experience working in Agile environment (Scrum, Kanban), collaborating closely with product managers, business analysts, and UX designers.
• You are invested in coaching and mentoring junior staff and fostering a culture of technical excellence.
• You have excellent analytical, problem-solving, and decision-making skills; verbal and written communication, interpersonal, and negotiation skills.

Technical Expertise and Full-Stack Proficiency - 55%

This category assesses your hands‑on software development ability, deep knowledge across the entire software stack, and your proficiency with our core development technologies.

• You have advanced proficiency in React.js - functional components, hooks, state management with Context API, etc.
• You have strong proficiency in modern Python versions, and building REST API with FastAPI.
• Experience with Node.js, and Java Spring Boot.
• You have proven expertise with .NET Core Services / Web API, and C#
• You have advanced proficiency with Next.js framework including routing, Server‑Side Rendering (SSR), and its full‑stack capabilities.
• You have proven experience with Typescript - strong typing skills and understanding of interfaces, types, and generics.
• You have proven expertise in HTML5, JavaScript, CSS3 / SCSS, responsive design, as well as CSS‑in‑JS.
• You have advanced knowledge of UI design patterns and testable UI architecture.
• You are proficient with Axios for HTTP requests, interceptors, and error handling.
• You have strong understanding of Web Security, Public Security, 0Auth2.0, and JWT Authentication.
• You possess expert knowledge of MS Azure SQL Server including DB encryption, tuning, stored procedures, triggers, user‑defined functions, jobs, and query optimization.
• You have experience with Azure NoSQL databases, particularly Cosmos DB and managed services.
• You are familiar with Azure Key Vault for secure storage management.
• You are expert with configuration files (YAML). Docker, and Kubernetes deployments, services and ingress. You demonstrate deep experience managing and optimizing Azure Kubernetes Service (AKS) clusters.
• You have strong working knowledge of Azure DevOps and building robust CI / CD pipelines.
• You have experience with version control (Git / GitHub) and Azure Resource Management.
• You have experience building and integrating with custom portals using diverse backend technologies.
• You have demonstrated the ability to troubleshoot and resolve technical issues throughout development, implementation, conversion and deployment.

AI / ML Expertise - 15 %

• You have direct experience with AI / ML development and deployment.
• You have hands‑on experience with model training using TensorFlow and PyTorch.
• You have strong interest in image manipulation and computer vision. You are proficient with OpenCV for image processing and computer vision tasks.
• You have experience with model training and evaluation, tuning hyperparameters and evaluating model performance using metrics such as accuracy, precision, recall, etc.
• You have ability to process, clean, and analyze large datasets to train AI models effectively.

Architecture and Design - 20%

• You have experience and understanding of modern, cloud‑based architecture.
• You actively participate in architecture and solution design and provide recommendations focused on the web service, Web API, microservices, back‑end and front‑end layers.
• You have proven experience architecting complex applications, optimizing performance, and managing state effectively.
• You have strong experience in designing and implementing reusable, and scalable components.
• You have hands‑on experience with software architecture principles and patterns such as serverless architecture, Microservices, RESTful APIs.