Job Description Client: Government Services Integration Cluster, Ministry of Public and Business Service Delivery and Procurement Location: 40 St.

Clair Avenue West, Toronto, ON Work Arrangement: 100% Onsite 5 days per week Contract: September 21, 2026 March 31, 2027 Extension: 1 possible extension Openings: 1 Security Clearance: No clearance required Closing Date: October 1, 2026 at 12:00 PM EST Submission Limit: 1 candidate Position Overview The Government Services Integration Cluster is seeking a Senior Solutions Designer to design and develop complex, highly available, enterprise-level technology and integration solutions.

The successful candidate will have extensive experience in backend design and development, enterprise integration, Spring Framework/Spring Integration, IBM App Connect Enterprise (ACE) or Mule

Soft, REST/JMS/AMQP, databases, Azure integration, and cloud-based integration solutions .

The role requires strong systems-analysis and solution-design capabilities, the ability to translate business requirements into technical solutions, and demonstrated experience leading other developers as a Team Lead .

Key Responsibilities Design hosting and technology solutions based on client business requirements, service specifications, standards, policies, best practices, and cost models.

Design and develop large, complex, highly available and mission-critical server applications and integration solutions.

Gather, analyze, and translate business and technical requirements into scalable solution architectures and technical designs.

Design enterprise integration solutions using appropriate integration patterns, technologies, design principles, and best practices.

Design and develop backend services using REST Web Services, JPA, Hibernate, SQL, and PL/SQL .

Design and implement integration solutions using Spring Framework, particularly Spring Integration .

Design and develop solutions using enterprise service buses and message-oriented middleware such as IBM App Connect Enterprise (ACE) or Mule

Soft .

Work with integration technologies including JMS, AMQP, REST, APIs, Message Queues, Middleware, and ESB technologies , including their application within Azure Integration environments.

Design and implement cloud-based integration solutions.

Work with relational databases and data models, including Oracle and SQL Server .

Develop solutions based on business requirements using technologies and approaches such as UML, JEE, Service Bus, and ETL .

Conduct system analysis, requirements gathering, use-case development, and solution evaluation.

Develop prototypes and proof-of-concept solutions for presentation to clients and senior management.

Evaluate existing systems for technical performance, capacity, scalability, expansion, renovation, or replacement requirements.

Assess system performance and capacity and provide recommendations for optimization and improvement.

Prepare detailed technical specifications, architecture/design documentation, implementation documentation, and other required artifacts.

Participate in planning, migration, implementation, and sustainment of large and complex system-development initiatives.

Provide technical guidance and leadership to development teams and lead other developers as a Team Lead .

Facilitate technical discussions with developers, architects, business stakeholders, and senior management.

Provide advice on short- and long-term technology and solution-development activities.





Evaluate emerging technologies and trends for potential application to current and future technology requirements.

Support solution cost/benefit analysis and technology planning.

Ensure solutions align with enterprise architecture standards, security requirements, recovery procedures, and organizational policies.

Work collaboratively with project teams and ensure deliverables are completed within established timelines.

Requirements Mandatory Qualifications & Skills 1.

Technical Skills Must Have 10+ years of experience in backend design and development using: REST Web Services JPA Hibernate Databases SQL PL/SQL Strong expertise in enterprise integration design , including: Integration patterns Integration technologies Design principles Integration best practices In-depth knowledge of the Spring Framework , particularly Spring Integration , with hands-on experience designing and building integration solutions using Spring Integration.

Strong knowledge and hands-on experience with message-oriented middleware and Enterprise Service Bus (ESB) technologies, specifically IBM App Connect Enterprise (ACE) or Mule

Soft .

Experience designing and building solutions using IBM ACE or Mule

Soft .

Experience with integration technologies such as JMS, AMQP, and REST , including an understanding of their use within an Azure context / Azure Integration environment .

Hands-on experience with cloud-based integration solutions .

Experience working with Oracle and SQL Server databases and data models.

Experience with APIs, Message Queues, Middleware, and Enterprise Service Bus (ESB) technologies.

Experience designing solutions from business requirements using UML, JEE, Service Bus, and ETL . 10+ years of backend design and development experience using REST Web Services, JPA, Hibernate, databases, SQL, and PL/SQL .

Demonstrated experience leading other developers as a Team Lead . 2.

System Analysis & Solution Design Experience conducting system analysis, requirements gathering, and use-case design .

Experience translating business requirements into technical architecture and solution designs.

Experience developing prototypes / proof-of-concepts for presentation to clients and/or senior management.

Experience evaluating existing systems, including technical performance, capacity, scalability, and feasibility of expansion, renovation, or replacement.

Strong conceptual and analytical capabilities for assessing technology requirements and conducting cost/benefit analysis. 3.

Communication & Leadership Excellent analytical, problem-solving, and decision-making skills .

Excellent verbal and written communication skills .

Robust interpersonal, negotiation, and stakeholder-management skills.

Demonstrated experience facilitating and leading discussions with both technical teams and business stakeholders .

Ability to provide technical advice and communicate complex technical concepts to various audiences.

Strong teamwork and collaboration skills.

Proven track record of meeting deadlines and delivering quality solutions.

Demonstrated experience leading development teams / developers as a Team Lead . 4.





Public Sector / OPS Experience Prior OPS/Public Sector experience is highly desirable.

Experience working with Enterprise Architecture within the Ontario Public Service (OPS) .

Experience following OPS architecture standards, documentation standards, artifacts, and templates .

Knowledge of OPS I⁢ standards, policies, procedures, infrastructure architecture, and enterprise technology practices is an asset.

General Technical Knowledge Candidates should also demonstrate knowledge of: Integrated networking technologies Mainframe and midrange server technologies Enterprise storage and SAN technologies Personal computer system technologies Enterprise directory and messaging standards Infrastructure and architecture management Facility/service delivery processes Infrastructure policies, procedures, and standards Security and recovery procedures Technical performance and capacity management Technology trends and emerging products Procurement processes and technology cost models Basic project management methodologies, including PMBOK Large-scale system migration, implementation, and sustainment Candidate Profile The ideal candidate is a Senior Solutions Designer / Solution Architect / Integration Architect with 10+ years of backend development and solution-design experience , strong enterprise integration expertise, and deep hands-on knowledge of Spring Integration, IBM ACE or Mule

Soft, REST, JMS/AMQP, Azure Integration, Oracle/SQL Server, JPA/Hibernate, SQL and PL/SQL .

The candidate must also demonstrate Team Lead experience , strong requirements-analysis and solution-design capabilities, and the ability to work directly with both technical and business stakeholders.

Prior Ontario Public Sector/OPS experience is strongly preferred.

Mandatory Screening Checklist Candidates should meet all of the following before submission: 10+ years backend design/development experience REST Web Services JPA Hibernate SQL PL/SQL Enterprise integration design Integration patterns and best practices Spring Framework Spring Integration IBM App Connect Enterprise (ACE) OR Mule

Soft JMS / AMQP / REST Azure Integration experience Cloud-based integration solutions Oracle and/or SQL Server APIs / Message Queues / Middleware / ESB UML / JEE / Service Bus / ETL System analysis and requirements gathering Use-case design Prototyping / proof-of-concept experience Team Lead experience leading developers Solid technical and business stakeholder communication Ability to work 100% onsite at 40 St.

Clair Avenue West, Toronto Prior OPS/Public Sector experience preferred, not mandatory Important: This is a 1-opening, 1-submission requisition, so candidates should be thoroughly screened against the mandatory integration, backend, Azure, ACE/Mule

Soft, Spring Integration, and Team Lead requirements before submission.

Requirements 10+ years backend design and development, REST Web Services, JPA, Hibernate, SQL, PL/SQL, Enterprise Integration, Integration Patterns, Spring Framework, Spring Integration, IBM App Connect Enterprise (ACE), Mule

Soft, JMS, AMQP, REST APIs, Azure Integration, Cloud Integration, APIs, Message Queues, Middleware, ESB, Oracle, SQL Server, UML, JEE, Service Bus, ETL, System Analysis, Requirements Gathering, Use-Case Design, Solution Architecture, Solution Design, Prototyping, Proof of Concept, Technical Architecture, Team Lead, Developer Leadership, Stakeholder Management, Enterprise Architecture, System Performance, Capacity Management, System Migration, Agile, PMBOK

📌 Senior Solutions Designer (Toronto)
🏢 Upstaff
📍 Toronto