Senior software developer Jobs in Toronto, ON

Job Description

Responsibilities:

• Required to translate technical systems specifications into working, tested applications. This includes:
  
• developing detailed programming specifications
  
• writing and/or generating code
  
• compiling data-driven programs, maintaining, and conducting unit tests.
  
• Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion and migrations.
  

General Skills:

• Experience in programming and analysis; specialized software package support at the specified experience level
  
• Ability to collaborate with IT Professionals throughout the Software Development Life Cycle
  
• Experience in structured methodologies for the development, design, implementation and maintenance of applications
  
• Experience in design, code, test, debug and document applications
  
• Experience in the use of object and/or third generation language development tools
  
• Experience in one or more programming languages
  
• Experience in application design, latest design patters, deployment and troubleshooting
  
• Experience with relational and hierarchical database technologies
  
• Experience in the use of information retrieval packages using query languages
  
• Experience with one or more communications protocols
  
• Experience in structured methodologies for the design, development, implementation and maintenance of applications
  
• Experience eliciting and documenting information from diverse business area stakeholders and subject matter experts
  
• Excellent analytical, problem-solving and decision-making skills; verbal and written communication skills; interpersonal and negotiation skills
  
• A team player with a track record for meeting deadlines
  

Desirable Skills:

• Knowledge and experience with programming Internet-ready applications
  
• Knowledge and experience in rapid application development (RAD) methodologies
  
• Knowledge and understanding of Information Management principles, concepts, policies and practices
  
• Experience with middleware and gateways
  
• Experience reviewing, analyzing, and modifying product installation scripts including encoding, testing, debugging
  
• Ability to provide post-implementation support and resolve any post-implementation technical issues
  
• Experience conducting design walkthrough sessions with project team
  
• Knowledge and understanding of Accessibility for Ontarians with Disability Act (AODA) and related regulations and standards
  
• Ability to provide user and system documentation as required
  

Additional Skills for Oracle Software Developer:

• Experience in conducting impact assessments on Oracle E-Business application customizations and extensions.
  
• Strong conversion experience in Account Receivable Collection modules
  
• Strong programming skills in Oracle database, PL/SQL, SQL, XML, Unix shell scripts and Oracle Data Integrator
  
• Proved business knowledge of General Ledger, Accounts Receivable, Collections, Accounts Payable and Inventory Modules of Oracle E-Business
  
• Great knowledge of Oracle E-Business table structure related to GL, AR, Collections, AP, INV and FND
  
• Strong knowledge of SQL tuning and using partition tables
  
• Demonstrated experience and understanding of data warehouse, ETL methodologies and OBIEE
  
• Demonstrated work experience on Java and Oracle Application Development Framework (ADF) will be a great asset
  
• Strong verbal and written communication skills and leadership abilities to be able to oversee the quality assurance of the project from technical perspective
  

Requirements

Experience and Skill Set Requirements:

Skill Set Requirements:

Assignment Deliverables – Senior Developer:

Designs, develops and maintains internal and external web applications. Uses knowledge of common web development languages to build and expand application functionality by writing high-quality code using appropriate patterns. Ensures applications remain scalable while complying to standards and following best practices. Tests and debugs applications and ensures that software is properly documented. Collaborates clearly and professionally as part of a development team and communicates with clients.

Mandatory Skills:

• 7+ years of web development experience with HTML5, CSS3, SCSS/SASS, JavaScript, AJAX and jQuery
  
• 5+ years of hands-on development in C#/ASP.NET including .NET Core
  
• 3+ years of experience developing applications in script-based MV* front-end frameworks like Angular (or React) with TypeScript and component libraries
  
• Experience working with REST APIs, SQL, and non-relational databases such as Cosmos DB
  
• Experience with Git and knowledge of source control strategies
  
• Knowledge of WCAG standards and techniques, including WAI-ARIA and OWASP security principles/best practices
  
• Solid communications skills: the ability to understand (comprehension) and follow instructions and requirements to communicate clearly and effectively both verbally and in writing.
  

Nice to have skills:

• Knowledge of Microsoft SharePoint: administration, SOAP/REST, SharePoint application development (SPFx)
  
• Experience working with Service Workers
  
• Experience with Microsoft Azure Cloud and DevOps
  
• Experience with Azure Functions
  
• Experience writing scripts with Python
  

Front‑End Web Development (React):

• Strong proficiency in modern HTML5, CSS3, and responsive design
  
• Experience with React using functional components and hooks
  
• State management experience (e.g., Context API, Redux, or similar)
  
• Familiarity with TypeScript, modular CSS (SCSS/SASS), React and component‑driven design
  
• Experience integrating front‑end applications with RESTful and GraphQL APIs
  
• Focus on performance optimization, accessibility, and cross‑browser compatibility
  
• Google Analytics
  

Back‑End Development (.NET & Spring Boot):

• Demonstrated experience building backend services using:
  
• .NET / .NET Core (C#),such as MVC, Razor, Blazer and Azure Functions
  
• Spring Boot (Java)
  
• Strong understanding of object‑oriented design, SOLID principles, and design patterns
  
• Experience developing RESTful APIs and/or GraphQL endpoints
  
• Knowledge of authentication/authorization (OAuth2, JWT, identity providers)
  
• Ability to design scalable, maintainable service architectures
  

API Design & Data Integration:

• Hands‑on experience designing, consuming, and integrating:
  
• REST APIs
  
• GraphQL schemas and resolvers
  
• Experience with data contracts, DTOs, and API versioning
  
• Understanding of synchronous vs asynchronous integrations
  
• Familiarity with data integration and orchestration concepts
  

Databases & Data Services (Azure):

• Strong working knowledge of Azure SQL Database
  
• Experience with relational schema design, query optimization, and indexing
  
• Familiarity with Azure Data Factory for data movement and transformation
  
• Understanding of data pipelines, ETL/ELT concepts, and data reliability
  
• Awareness of data security, access control, and performance considerations
  

DevOps & Source Control (Azure DevOps):

• Proficiency with Git and branching strategies (e.g., GitFlow, trunk‑based development)
  
• Experience using Azure DevOps for:
  
• Repositories
  
• Pull requests and code reviews
  
• CI/CD pipelines
  
• Familiarity with automated builds, testing, and deployment workflows
  
• Understanding of environment promotion and release management
  

Standards, Security & Best Practices:

• Knowledge of WCAG accessibility standards, including WAI‑ARIA
  
• Awareness of OWASP security principles and secure coding practices
  
• Understanding of quality standards such as code reviews, testing, and documentation
  
• Experience applying enterprise development standards and compliance requirements
  

Communication & Collaboration:

• Ability to clearly understand and follow technical requirements and instructions
  
• Demonstrates effective verbal and written communication
  
• Comfortable collaborating with cross‑functional teams (developers, QA, DevOps, stakeholders)
  
• Able to document solutions and explain technical decisions clearly
  

Requirements
Experience and Skill Set Requirements: Skill Set Requirements: Assignment Deliverables – Senior Developer: Designs, develops and maintains internal and external web applications. Uses knowledge of common web development languages to build and expand application functionality by writing high-quality code using appropriate patterns. Ensures applications remain scalable while complying to standards and following best practices. Tests and debugs applications and ensures that software is properly documented. Collaborates clearly and professionally as part of a development team and communicates with clients. Mandatory Skills: 7+ years of web development experience with HTML5, CSS3, SCSS/SASS, JavaScript, AJAX and jQuery 5+ years of hands-on development in C#/ASP.NET including .NET Core 3+ years of experience developing applications in script-based MV* front-end frameworks like Angular (or React) with TypeScript and component libraries Experience working with REST APIs, SQL, and non-relational databases such as Cosmos DB Experience with Git and knowledge of source control strategies Knowledge of WCAG standards and techniques, including WAI-ARIA and OWASP security principles/best practices Solid communications skills: the ability to understand (comprehension) and follow instructions and requirements to communicate clearly and effectively both verbally and in writing. Nice to have skills: Knowledge of Microsoft SharePoint: administration, SOAP/REST, SharePoint application development (SPFx) Experience working with Service Workers Experience with Microsoft Azure Cloud and DevOps Experience with Azure Functions Experience writing scripts with Python Front‑End Web Development (React): Strong proficiency in modern HTML5, CSS3, and responsive design Experience with React using functional components and hooks State management experience (e.g., Context API, Redux, or similar) Familiarity with TypeScript, modular CSS (SCSS/SASS), React and component‑driven design Experience integrating front‑end applications with RESTful and GraphQL APIs Focus on performance optimization, accessibility, and cross‑browser compatibility Google Analytics Back‑End Development (.NET & Spring Boot): Demonstrated experience building backend services using: .NET / .NET Core (C#),such as MVC, Razor, Blazer and Azure Functions Spring Boot (Java) Strong understanding of object‑oriented design, SOLID principles, and design patterns Experience developing RESTful APIs and/or GraphQL endpoints Knowledge of authentication/authorization (OAuth2, JWT, identity providers) Ability to design scalable, maintainable service architectures API Design & Data Integration: Hands‑on experience designing, consuming, and integrating: REST APIs GraphQL schemas and resolvers Experience with data contracts, DTOs, and API versioning Understanding of synchronous vs asynchronous integrations Familiarity with data integration and orchestration concepts Databases & Data Services (Azure): Strong working knowledge of Azure SQL Database Experience with relational schema design, query optimization, and indexing Familiarity with Azure Data Factory for data movement and transformation Understanding of data pipelines, ETL/ELT concepts, and data reliability Awareness of data security, access control, and performance considerations DevOps & Source Control (Azure DevOps): Proficiency with Git and branching strategies (e.g., GitFlow, trunk‑based development) Experience using Azure DevOps for: Repositories Pull requests and code reviews CI/CD pipelines Familiarity with automated builds, testing, and deployment workflows Understanding of environment promotion and release management Standards, Security & Best Practices: Knowledge of WCAG accessibility standards, including WAI‑ARIA Awareness of OWASP security principles and secure coding practices Understanding of quality standards such as code reviews, testing, and documentation Experience applying enterprise development standards and compliance requirements Communication & Collaboration: Ability to clearly understand and follow technical requirements and instructions Demonstrates effective verbal and written communication Comfortable collaborating with cross‑functional teams (developers, QA, DevOps, stakeholders) Able to document solutions and explain technical decisions clearly