Sr Software Developer

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.
• 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

• 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.
• 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

• 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
• Enterprise‑scale government applications and SDLC practices

Additional / Nice‑to‑Have Experience

The following experience will be considered an asset:

• 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 .

Evaluation Focus

Candidates will be assessed across the following areas:

Area

Weight

Core Skills & Experience 40%

Technical Skills & Experience 35%

Soft Skills 20%

Public Sector Experience 5%

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
• 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.

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