Software developer Jobs in East York, ON

Location: Toronto, Ontario – 222 Jarvis Street

Work Arrangement: 100% Onsite – 5 Days/Week

Contract: September 21, 2026 – March 31, 2027

Extension: Possible, up to 1 additional term

Openings: 1

Security Clearance: No clearance required

Client: Government Services Integration Cluster, Ministry of Public and Business Service Delivery and Procurement

Closing Date: October 5, 2026 at 12:00 PM EST

Submission Limit: 1 candidate

Position Overview

We are seeking an experienced Intermediate Software Developer to support the Government Services Integration Cluster in designing, developing, testing, implementing, and maintaining large-scale, multi-client web applications.

The successful candidate will have strong hands-on experience with Java, Oracle/SQL databases, REST APIs/Web Services, Azure DevOps, microservices, and object-oriented development practices. The role requires the ability to work closely with both functional and technical teams in an Agile environment and deliver high-quality solutions within aggressive timelines.

Mandatory Skills & Experience

Candidates must meet all of the following requirements:

• 5+ years of experience as a designer and developer working on large-scale, multi-client web applications.
  
• 5+ years of hands-on Java development experience with Oracle or SQL databases.
  
• 2+ years of hands-on experience with REST APIs / RESTful Web Services.
  
• Experience using Azure DevOps.
  
• Strong knowledge and practical experience with microservice architecture, including the ability to apply core architecture principles to improve product extensibility and maintainability.
  
• Strong understanding of object-oriented programming and coding practices, including:
  
• Design patterns
  
• Refactoring
  
• Clean code
  
• Experience with relational and hierarchical database technologies.
  
• Experience using query languages and information retrieval packages.
  
• Experience with communications protocols.
  
• Strong understanding of Agile methodologies.
  
• Knowledge of security gateways and protocols, including:
  
• JWT
  
• OAuth 2.0
  
• SSL Certificates
  

Key Responsibilities

The Software Developer will:

• Translate technical systems specifications into working, tested applications.
  
• Develop detailed programming specifications and technical solutions.
  
• Write, generate, compile, test, debug, document, and maintain application code.
  
• Design, develop, implement, and maintain enterprise applications.
  
• Conduct unit testing, troubleshooting, debugging, and technical problem resolution.
  
• Troubleshoot technical issues arising during software implementation, conversion, migration, and production operations.
  
• Participate throughout the Software Development Life Cycle (SDLC).
  
• Collaborate with IT professionals, functional teams, technical teams, project teams, and other developers.
  
• Apply structured methodologies for application design, development, implementation, and maintenance.
  
• Apply appropriate application design patterns and development standards.
  
• Participate in application deployment and provide post-implementation technical support.
  
• Analyze and resolve technical issues within tight timelines.
  
• Elicit and document technical/business information from diverse business stakeholders and Subject Matter Experts.
  
• Participate in design walkthroughs with project teams.
  
• Prepare user and system documentation as required.
  
• Contribute to technical quality assurance and ensure development standards are followed.
  

Requirements

Technical Requirements

Java & Application Development

• 5+ years of hands-on Java development.
  
• 5+ years of experience designing and developing large-scale, multi-client web applications.
  
• Strong understanding of object-oriented programming.
  
• Experience with design patterns, refactoring, clean-code principles, application design, deployment, and troubleshooting.
  
• Knowledge of Internet-ready applications.
  
• Experience with structured software development methodologies.
  
• Knowledge/experience with Rapid Application Development (RAD) methodologies.
  

APIs & Architecture

• 2+ years of hands-on experience developing and working with:
  
• REST APIs
  
• RESTful Web Services
  
• Experience with microservice architecture.
  
• Ability to apply architecture principles to enhance application extensibility, scalability, and maintainability.
  
• Experience with middleware and gateways.
  

Database

• 5+ years of Java development experience with Oracle or SQL databases.
  
• Experience with relational and hierarchical database technologies.
  
• Experience using query languages and information retrieval packages.
  
• Strong database development and troubleshooting capabilities.
  

DevOps

• Hands-on experience using Azure DevOps.
  
• Experience supporting application deployment, troubleshooting, testing, and implementation.
  

Security

Knowledge and experience with security gateways and protocols, including:

• JWT
  
• OAuth 2.0
  
• SSL Certificates
  

Agile & SDLC

• Solid understanding of Agile methodologies.
  
• Experience collaborating throughout the complete Software Development Life Cycle.
  
• Ability to work with both functional and technical teams.
  

General Skills

• Strong analytical, problem-solving, and decision-making abilities.
  
• Excellent verbal and written communication skills.
  
• Strong interpersonal and collaboration skills.
  
• Ability to develop and present new ideas and conceptualize new approaches and solutions.
  
• Ability to work effectively as part of a large technical team.
  
• Demonstrated ability to work closely with individual team members and cross-functional teams.
  
• Strong systematic problem-solving skills.
  
• Ability to work under pressure and meet aggressive deadlines.
  
• Highly adaptable to changing priorities and requirements.
  
• Strong troubleshooting and technical issue-resolution skills.
  
• Track record of meeting project deadlines and delivering quality solutions.
  

Public Sector / OPS Experience

Prior Ontario Public Service (OPS) or other public-sector development experience is highly desirable.

Candidates with OPS experience should understand or have exposure to:

• OPS development standards and processes
  
• Public-sector application development environments
  
• Enterprise-scale government applications and SDLC practices
  

Additional / Nice-to-Have Experience

The following experience will be considered an asset:

• Experience developing Internet-ready applications.
  
• Experience with RAD methodologies.
  
• Knowledge of Information Management principles, concepts, policies, and practices.
  
• Experience with middleware and security gateways.
  
• Experience reviewing, analyzing, modifying, encoding, testing, and debugging product installation scripts.
  
• Post-implementation application support.
  
• Experience conducting technical/design walkthroughs.
  
• Knowledge of AODA and related accessibility regulations and standards.
  
• Experience preparing user and system documentation.
  
• Experience with Java and Oracle Application Development Framework (ADF).
  

Oracle / E-Business Experience – Asset

Experience with Oracle E-Business applications is an additional asset, particularly:

• Impact assessments for Oracle E-Business customizations and extensions.
  
• Oracle database, PL/SQL, SQL, XML, Unix shell scripting, and Oracle Data Integrator (ODI).
  
• Oracle E-Business modules including:
  
• General Ledger (GL)
  
• Accounts Receivable (AR)
  
• Collections
  
• Accounts Payable (AP)
  
• Inventory (INV)
  
• FND
  
• Oracle E-Business table structures related to GL, AR, Collections, AP, INV, and FND.
  
• SQL tuning and partitioned tables.
  
• Data warehouse and ETL methodologies.
  
• OBIEE.
  
• Account Receivable / Collections conversion experience.
  

Evaluation Focus

Candidates will be assessed across the following areas:

Important Submission Requirements

This is a 100% onsite position. Candidates must be willing and able to work onsite 5 days per week at 222 Jarvis Street, Toronto.

Mandatory screening checklist

Before submitting, confirm the candidate has:

• 5+ years designing/developing large-scale, multi-client web applications
  
• 5+ years hands-on Java development
  
• 5+ years Java development with Oracle or SQL database
  
• 2+ years REST API / RESTful Web Services experience
  
• Azure DevOps experience
  
• Microservices architecture experience
  
• Object-oriented development / design patterns / refactoring / clean code
  
• Agile methodology experience
  
• JWT / OAuth 2.0 / SSL Certificates knowledge
  
• Relational and hierarchical database experience
  
• Query language experience
  
• Strong communication and analytical/problem-solving skills
  
• Ability to work 100% onsite in Toronto, 5 days/week
  

Prior OPS/public-sector experience is a strong asset but is not mandatory.

Only one candidate can be submitted for this requisition, so candidate quality and alignment with the mandatory requirements are critical.