Senior Software Developer – Full Stack (MERN, Documentation, Solution Design, CI/CD, Azure DevOps, Git)

Title Software Developer - Full Stack 5 days onsite: 40 St. Clair Avenue West, Toronto or 1 Stone Road West, Guelph. Description The ministry is seeking a vendor resource, Senior Software Developer (Full Stack), with MERN (MongoDB, Express, React, Node.js) expertise, to support the ongoing enhancements of the Ceres application. Introduced in February 2023, Ceres improves the collection, management, and accessibility of plant health data, providing stakeholders with timely access to critical current and historical information while supporting the efficient detection and management of pest threats. Ceres is built using the MERN technology stack and hosted within the Azure OPS tenant. The vendor resource will be responsible for designing and implementing enhancements, bug fixes, technical improvements, and platform upgrades based on evolving business requirements, updating project architecture documents, and vendor offboarding knowledge transfer documentation. In addition to development responsibilities, the vendor resource will provide support for solution design documentation and support governance reviews, ensure solution alignment with OPS standards, and assist with knowledge transfer activities. Work Location & Schedule The work location will be based at 40 St. Clair Avenue West, Toronto or 1 Stone Road West, Guelph. This position is listed as “On-site”. The resource is expected to work 7.25 hours per calendar day between the standard working hours of 9:00 AM and 5:00 PM (excluding lunch breaks), Monday to Friday. Skills Experience and Skill Set Requirements Mandatory Skills & Experience · 7+ years of full-stack development experience using the MERN (MongoDB, Express, React, Node.js) technology stack. · 4+ years of experience developing, maintaining, and updating technical documentation, including build books, deployment procedures, release management documentation, and operational/support documentation. · Experience designing, developing, testing, and implementing application enhancements and technical improvements, including solutions that comply with the Accessibility for Ontarians with Disabilities Act (AODA). · Experience working in Agile software delivery environments. · Knowledge of IT security best practices and authentication protocols, including OAuth 2.0 and SAML. · Experience [RL1] updating and maintaining solution design artifacts, models, diagrams, and supporting documentation. · Experience collaborating with business and technical stakeholders to ensure solution alignment with functional, technical, security, privacy, integration, and cloud requirements. · Experience supporting architecture, security, privacy, and governance review processes by providing technical input, documentation, and implementation expertise. · Experience providing knowledge transfer to support operational continuity and future activities. Desirable Skills & Experience · Experience building and deploying cloud-native solutions in Microsoft Azure. · Experience working on agricultural data collection and analysis applications. · Familiarity with Government of Ontario Information and Technology Standards (GO-ITS). · Experience with source control, DevOps, CI/CD pipelines, and related tools such as Azure DevOps and Git. Soft Skills & Experience · Ability to work independently and collaboratively in a team environment. · Strong analytical, problem-solving, and decision-making skills, with strong attention to detail. · Excellent verbal and written communication skills, including meeting facilitation, requirements gathering, and consensus-building. · Strong stakeholder management skills, with experience reporting on deliverables and proactively identifying and escalating risks, issues, and mitigation strategies. Evaluation and Skillset Requirements Evaluation Category Weight Mandatory Skills & Experience 70% Desirable Skills & Experience 20% Soft Skills & Experience 10% Total 100% 5 days onsite: 40 St. Clair Avenue West, Toronto or 1 Stone Road West, Guelph. Must Have: 7+ years of full-stack development experience using the MERN (MongoDB, Express, React, Node.js) technology stack. 4+ years of experience developing, maintaining, and updating technical documentation, including build books, deployment procedures, release management documentation, and operational/support documentation. Experience updating and maintaining solution design artifacts, models, diagrams, and supporting documentation. Experience with source control, DevOps, CI/CD pipelines, and related tools such as Azure DevOps and Git. Nice To have: Familiarity with Government of Ontario Information and Technology Standards (GO-ITS). Note: Resume: Maximum 5 pages

The developer will design and implement enhancements, bug fixes, and platform upgrades for the Ceres application using the MERN stack. They are also responsible for updating solution design artifacts and providing knowledge transfer for operational continuity.

Requires over 7 years of full-stack MERN experience and 4+ years of technical documentation expertise. Candidates must be proficient in Agile environments, IT security protocols, and Azure DevOps tools.

• Microsoft AzurePreferred
• Node.jsPreferred
• CI/CDPreferred
• ReactPreferred
• AgilePreferred
• MongoDBPreferred
• GitPreferred

Identified from the job description. Confirm important requirements above.

• MERN Stack
• MongoDB
• Express.js
• React
• Node.js
• Technical Documentation
• Solution Design
• Azure DevOps
• Git
• CI/CD
• Agile
• OAuth 2.0
• SAML
• AODA Compliance
• Microsoft Azure
• Stakeholder Management

• Software
• Technology
• Government & Public Sector
• Consulting
• Agriculture

Minimum experience

5+ years

Apply by

Sep 12, 2026

Posting language

English

Working hours

37 hours per week

Seniority

Mid-Senior level

Application method

Direct apply is available