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Senior Web Application Developer

Flynn Group of Companies

Mississauga, Canada

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Posted: September 7th, 2025

Job Description

Overview

Flynn Group of Companies, North America’s leading building envelope contractor, is looking to hire a Sr. Web Application Developer to work in our Mississauga location. Relocation assistance is provided for top qualified candidates.

What we offer

  • Funded training and development program
  • Very well-equipped on-site gym with free access
  • Dental and supplemental medical plan
  • Matching RRSP contributions
  • Employee and Family Assistance Program
  • Subsidized onsite cafeteria with excellent food choices
  • Free parking and EV charging facility
  • Family events and Flynn Fest
  • MSDN Subscription
  • Monthly AWS credits

Responsibilities

  • Be a core member of the team to design, architect, develop, code review and test key applications
  • Design new application features and integrations in collaboration with team members to deliver complex changes
  • Design and implement scalable and resilient cloud solutions with security and disaster recovery in mind
  • Help the team plan and execute technical deliverables
  • Ensure good code coverage and test coverage by writing and maintaining effective automated tests
  • Be a champion of code quality in the team by adhering to CLEAN architecture and SOLID principles
  • Mentor other developers on the team in software development life cycle and best practices and elevate the skill of the team through technical mentorship
  • Work with BA team and stakeholders to identify business needs and develop solutions that align with their objectives
  • Off-hours support as required
  • Participate in a rotating weekly on-call schedule

What we are seeking

  • 10+ years of recent experience, with at least 5 years in a Sr. Web Developer or similar senior role
  • Post-secondary education in Computer Science/IT or related field
  • Experience in .NET / .NET Framework and C#
  • Experience in Entity Framework
  • Experience with TypeScript front-end frameworks: Angular, React, Vue
  • Experience with relational databases: MySQL, SQL Server, PostgreSQL
  • Experience with non-relational databases: MongoDB, DocumentDB, DynamoDB
  • Docker and container hosting: AWS ECS, Kubernetes
  • General Amazon AWS knowledge (or equivalent): EC2, S3, CloudFront, Elastic Beanstalk, DynamoDB
  • Basic networking knowledge and troubleshooting
  • Experience with tools and technologies: Atlassian Jira, GitHub, Azure DevOps, Aha!, New Relic, Sumo Logic

Seniority

  • Not Applicable

Employment type

  • Full-time

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