Senior Application Component Developer

Fonction publique de l'Ontario; Toronto; On-site; CAD 96,000 - 120,000; Full time

Job summary

Ontario Public Service (OPS) is seeking a Senior Application Component Developer to lead IT projects supporting Ontario's health systems. You will guide solution design, champion modern delivery practices, and ensure scalable, secure outcomes across platforms.

Responsibilities include designing data systems, mentoring technical teams, and evaluating new technologies while aligning with stakeholder needs and compliance requirements.

Qualifications

• Extensive experience designing, developing, modernizing, and supporting enterprise-scale applications.
• Strong experience with secure, scalable, high-performing apps, APIs, and microservices.
• Experience with web and API-based solutions using HTML5/JS/React and REST/JSON.

Responsibilities

• Lead IT projects supporting Ontario health systems with stakeholder alignment.
• Design and optimize data systems for secure, efficient databases and apps.
• Provide expert advice on software, hardware, and emerging tech.
• Collaborate to establish standards for data and app development.
• Oversee testing and implementation of new software releases.

Skills

.NET 8/9/10

C#

Java

Spring Boot

APIs

Microservices

HTML5

CSS3

JavaScript

React

REST APIs

Azure

Azure DevOps

Git

Docker

Kubernetes

Security

Tools

Azure DevOps

Git

Docker

Kubernetes

SQL

OpenAPI

Swagger

Job description

Apply By:Wednesday, September 2, 2026 11:59 pm EDT

Ministry of Public and Business Service Delivery and Procurement

Division:

Health Services I&IT Cluster / Corporate I&IT Solutions and Integration Management Branch

City:

Kingston, Toronto

Position(s) language:

Job term:

1 Temporary contract/assignment up to 12 months with possible extension

Job code:

17162 - Systems Officer 6

$1,852.71 - $2,314.51 Per week*
*Indicates the salary listed as per the OPSEU Collective Agreement.

The Health Services I&IT Cluster delivers cutting-edge information management and technology solutions that support the operational needs of the Ministry of Health, the Ministry of Long-Term Care, and their affiliated agencies. As a key enabler of Ontario's I&IT Strategy, the cluster leads transformative business initiatives and infrastructure modernization efforts, driving progress toward a unified government IT ecosystem. Take the lead in delivering impactful digital solutions that support Ontario's health system. As a Senior Application Component Developer, you'll apply your expertise in business analysis and technology to design and implement I&IT systems that meet complex stakeholder needs. You'll spearhead strategic IT initiatives, collaborate across teams, and help shape the future of healthcare delivery through innovative, high-performance applications.

This is your opportunity to:

• Lead high-profile projects with real-world impact
• Influence strategic direction in a dynamic public sector environment
• Work with advanced technologies that support critical health services

About the job

As a Senior Application Component Developer, you will play a pivotal role in delivering high-quality digital products and services. You will lead technical teams, guide solution design, and champion modern delivery practices to ensure scalable, secure, and user-centric outcomes.

Key responsibilities include:

• Lead and manage IT projects that support Ontario's health systems, ensuring stakeholder needs are met across the ministry.
• Design and optimize data systems by developing strategies for secure, efficient, and high-performing databases and applications.
• Provide expert technical advice on software and hardware solutions, including evaluating emerging technologies and recommending improvements.
• Collaborate with cross-functional teams and stakeholders to establish shared standards and best practices for data and application development.
• Oversee testing and implementation of new software releases, ensuring systems operate smoothly and securely across platforms.
• Evaluate and implement new technologies, including software releases, database connectivity tools, and security solutions; prepare business cases and feasibility studies.

What you bring to the team

Technical Skills and Experience:

You have:

• extensive experience designing, developing, modernizing, and supporting enterprise-scale applications and digital solutions in complex environments.
• strong experience developing secure, scalable, and high-performing applications, APIs, and microservices using .NET 8/9/10, C#, Java, Spring Boot, modern software engineering practices, and industry-standard design patterns.
• experience building and integrating modern web and API-based solutions using technologies such as HTML5, CSS3, JavaScript, React, Bootstrap, REST APIs, JSON, XML, OpenAPI, Swagger, and Postman.
• strong experience with relational databases and data management, including database design, data modelling, integration, optimization, and performance tuning.
• experience designing and implementing cloud-native and hybrid solutions using Microsoft Azure, including application, integration, and data services, and migrating legacy applications to cloud-based platforms.
• experience implementing automated testing, source control, deployment automation and container technologies using tools such as Azure DevOps, Git, Docker, and Kubernetes.
• strong understanding of application security principles, including authentication, authorization, encryption, identity and access management, and industry security standards and protocols.
• experience with enterprise integrations, API gateways, event-driven architecture, messaging technologies, and cloud-based data and analytics platforms such as Azure Databricks and Azure Data Factory.
• experience troubleshooting production issues, conducting root cause analysis, and implementing sustainable solutions to improve application reliability and performance.

Analytical and Problem-Solving Skills:

You have:

• experience across all phases of the Software Development Life Cycle (SDLC).
• strong analytical and problem-solving skills to assess business and technical challenges, conduct research, evaluate options, and develop practical recommendations.
• ability to assess business and client requirements and translate them into secure, scalable, and effective technical solutions.

Project Management Skills:

You have:

• demonstrated project planning methodologies to plan and coordinate technical activities, plans, and schedules of project teams
• skills to lead major, complex IT projects, direct teams of project staff and external consultants, and ensure project deliverables are delivered within specified parameters
• experience in working on multiple, concurrent projects and multi-year projects

Communication, Consultation and Interpersonal Skills:

You can:

• demonstrate effective communication skills to prepare technical reports, briefing notes, documentation and explain technical solutions to IT and non-technical stakeholders
• work co-operatively with project staff and external stakeholders to discuss application development methods, monitor and manage vendor contacts, and participate on various IT committees
• effectively communicate with all stakeholders to ensure everyone has the same understanding of the status, the progress and the next steps of the initiatives
• be a team player with a track record for meeting deadlines

How we support diversity, inclusion and accessibility

We are building an inclusive workforce that reflects the communities we serve. We encourage everyone interested in working with us to apply, including people with disabilities, Indigenous, Black and racialized individuals, as well as people from all ethnicities, cultures, sexual orientations, gender identities and gender expressions.

Our hiring process is accessible, consistent with Ontario's Human Rights Code and the Accessibility for Ontarians with Disabilities Act, 2005. We are working to prevent and remove barriers in our hiring processes and can offer accommodation to address specific needs related to Code-protected grounds such as disability, family status and religion. For more information about accommodation during the hiring process please contact us.

Learn more about the work the OPS is doing to create an inclusive, anti-racist, accessible and diverse workplace:

• diversity, equity and inclusion initiatives
• accessibility
• Anti-Racism Policy

• 1 English Temporary, duration up to 12 months, 5700 Yonge St, Toronto, Toronto Region or 222 Jarvis St, Toronto, Toronto Region or 49 Place d'Armes, Kingston, East Region
• OPS employees are required to quote their WIN EMPLOYEE ID number when applying.

Language requirements and assessment:
All external Ontario Public Service (OPS) job ads are posted in English and French. Check the "position(s) language" section at the top of each job ad for the language requirements. For all roles, candidates are assessed in English, the business language of the OPS. If the position is bilingual (English/French), you'll also need to pass a French-language proficiency test.