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Senior Solutions Designer – Enterprise Integration / Java

Toronto, ON
On-site
Posted Oct 1, 2026
1 position

Opens an external site

Employment type: Contract
Experience level: Lead · 10+ years
Apply by: Oct 29, 2026
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Design and deliver complex enterprise integration solutions, including cloud-based, highly available, and mission-critical applications. Lead technical teams, translate business requirements into technical designs, and collaborate with business and technical stakeholders to deliver solutions on time.

Job details

Job Overview We are looking for a Senior Solutions Designer with extensive experience in backend development, enterprise integration, Java/JEE technologies, and cloud-based integration solutions. The ideal candidate will have strong hands-on expertise designing complex integration solutions and leading technical teams in enterprise environments. Key Responsibilities & Requirements 10+ years of experience in backend design and development using REST Web Services, Java/JEE, JPA, Hibernate, SQL, PL/SQL, and relational databases. Strong expertise in Enterprise Integration Architecture, including integration patterns, design principles, best practices, APIs, middleware, and Enterprise Service Bus (ESB) technologies. Extensive experience with Spring Framework, particularly Spring Integration, including designing and implementing enterprise integration solutions. Hands-on experience with IBM App Connect Enterprise (ACE) and/or MuleSoft, with strong knowledge of message-oriented middleware and ESB solutions. Experience with JMS, AMQP, REST, APIs, Message Queues, and related integration technologies, including their implementation within Azure integration environments. Strong knowledge of Oracle, SQL Server, data modelling, SQL/PL/SQL, and integration with enterprise databases. Experience designing cloud-based integration solutions, highly available and mission-critical applications, and complex enterprise systems. Ability to translate business requirements into technical solutions, including requirements analysis, use cases, UML, JEE, Service Bus, ETL, solution prototyping, and technical documentation. Proven experience leading developers / technical teams, facilitating discussions with both technical and business stakeholders, and delivering solutions within deadlines. Previous Public Sector experience and familiarity with OPS Enterprise Architecture standards, documentation artifacts, templates, policies, and best practices will be considered an asset. Key Technologies / Skills Java | JEE | Spring Framework | Spring Integration | REST APIs | JPA | Hibernate | SQL | PL/SQL | Oracle | SQL Server | IBM ACE | MuleSoft | ESB | JMS | AMQP | Message Queues | Enterprise Integration | Azure Integration | Cloud Integration | APIs | ETL | UML | Data Modelling | Solution Design | System Analysis | Team Leadership

What you’ll do

Requirements

Requires 10+ years of backend design and development experience with Java/JEE, REST services, databases, and enterprise integration technologies. Candidates should have hands-on experience with Spring Integration and IBM ACE and/or MuleSoft, along with technical leadership and solution design capabilities; public sector experience is an asset.