senior middleware specialist.
$70.23 - $83 per hourRandstad
We are seeking a highly accomplished Senior Middleware Specialist for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier engineering and architectural capacity within middleware, platform integration, and cloud modernization streams, specializing in maintaining robust enterprise integration engines and migrating legacy workflows to cloud-native architectures.
As a principal middleware authority, you will bridge the gap between complex on-premises systems, hybrid cloud infrastructure, and modern Azure integration suites. Operating within a hybrid work model, you will support and optimize BizTalk Server integrations across enterprise platforms (including SAP, SuccessFactors, and Maximo), architect Azure Logic Apps workflows, engineer automated CI/CD pipelines, and enforce strict security, performance, and monitoring baselines. This position demands a seasoned integration specialist who can lead defect triage, perform root-cause analysis, and build maintainable, secure middleware solutions. Location: Toronto, ON Assignment Type: Hybrid (Minimum 2 days per week onsite) Contract Duration: 1-year contract (with potential for extension)
Advantages
High-Impact Cloud Migration: Lead the modern transformation of legacy BizTalk Server integrations to Azure Integration Services and Azure Logic Apps.
Support, maintain, and optimize BizTalk Server orchestrations, pipelines, maps, schemas, and adapters across enterprise platforms. Design, build, test, deploy, and support Azure Logic Apps (Standard and Consumption) workflows and cloud integration services. Migrate legacy BizTalk integration workflows to modern Azure Integration Services, Azure Logic Apps, and API-driven architectures. Monitor integration health, performance, message tracking, error-handling mechanisms, and retry logic across hybrid environments. Develop complex data transformations utilizing XML, XSLT, JSON, and Liquid templates. Configure enterprise adapters and connectivity components, including WCF-SAP, WCF-Custom, REST, SFTP, API Management, gateways, and hybrid connections. Build, modernize, and maintain custom C#, .NET, and SQL Server stored procedures and supporting integration components. Maintain version control branching strategies in Git and build automated CI/CD pipelines within Azure DevOps using Bicep templates and YAML configurations. Implement cloud security controls, including OAuth2, SSL certificates, Azure Key Vault, Microsoft Entra ID, managed identities, and role-based access controls (RBAC). Support Systems Integration Testing (SIT), User Acceptance Testing (UAT), performance testing, root-cause troubleshooting, defect triage, and non-functional requirement validation. Partner with cross-functional teams, Enterprise Architecture, QA leads, and vendors to resolve integration bottlenecks and ensure governance compliance. Create and update technical design artifacts, interface inventories, mapping specifications, deployment plans, and knowledge-transfer documentation. Qualifications
Core Technical & Middleware Experience
Education: Post-secondary degree or diploma in Computer Science, Computer Engineering, or an equivalent combination of education and professional experience. Enterprise Integration Tenure: 10+ years of enterprise systems integration experience utilizing .NET, C#, Web API, XML, XSLT, JSON, SQL Server, T-SQL, and stored procedures. BizTalk Server Expertise: Strong hands-on experience with BizTalk Server (including BizTalk 2020), orchestrations, pipelines, maps, schemas, adapters, and cloud migration strategies. Protocol & Connectivity Depth: Deep experience working with WCF-Custom, WCF-SAP, SFTP, REST, BAPIs, IDocs, APIs, and enterprise integration patterns. Azure Logic Apps Depth: Minimum 4 years of hands-on experience building, testing, and deploying Azure Logic Apps. Azure Cloud Services: Hands-on experience with Azure Functions, Service Bus, API Management, Cosmos DB, Azure Data Factory, Azure Storage, Azure Monitor, Application Insights, and Log Analytics. DevOps & CI/CD Pipelines: Proficiency with Git version control (branching, PR reviews) and constructing automated CI/CD deployment pipelines in Azure DevOps. Cloud Security Frameworks: Solid understanding of OAuth2, certificates, Azure Key Vault, Microsoft Entra ID, managed identities, and role-based access control. Preferred Assets
Microsoft Certification: Active Microsoft Certified: Azure Developer Associate credential is preferred. Summary
If you're interested in the "Senior Middleware Specialist" role based in Toronto, we encourage you to apply online at
Only qualified candidates will be contacted for the next steps. We look forward to hearing from you! Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community. Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to View email address on randstad.com to ensure their ability to fully participate in the interview process. This posting is for existing and upcoming vacancies. show more
Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the senior middleware specialist. in Toronto, ON vacancy
$86.33 - $103.61 per hour
...RQ11176 - Sr. Middleware Specialist 9-month contract (180 business days) - possible extension ONSITE 5 days - 87 Sir William Hearst Ave., Toronto, Ontario M3M 0B4 Security Level: CRJMC Must-haves: · Monitoring Azure resources for right-sizing to provide...SeniorMiddlewareContract workLocal area$101.15k - $130.9k per year
...communities where we live, work and play. It’s an exciting time to join the team at Hydro One! Job Function: The Senior Cybersecurity Specialist, GRC Risk Management is a senior advisor responsible for cyber risk management across IT, OT, cloud, AI, and emerging...Senior- We are seeking an experienced Senior Security Specialist to drive end-to-end Threat Risk Assessment (TRA) initiatives to evaluate and elevate organizational security posture across information systems, applications, infrastructure, and business processes. In this role, you will...SeniorContract workFlexible hours
$67.78 - $81.34 per hour
...RQ11321 - Systems Testing/QA Specialist - Senior Onsite -No Clearance Required Contract - 3 months - possible extension Two onsite... ...Geocortex-based applications which rely on deprecated middleware and infrastructure to the current Geocortex vendor release version...SeniorMiddlewareFull timeContract workWork at office$63.85 - $70.51 per hour
We are seeking a highly accomplished Senior Cloud Development and Administration Specialist for an enterprise-level contract opportunity based in Toronto. In this... ...GitHub Copilot, GenAI, AWS or Azure Databases & Middleware: SQL, PL/SQL, Oracle, Tomcat, Linux Testing &...SeniorMiddlewareContract work$70k - $80k per year
...About the Role As a Senior Digital Marketing Specialist, you’ll play a key role in leading and delivering creative and data-driven marketing initiatives that drive global awareness, engagement, and growth. Reporting to the Digital Brand team, you’ll lead a wide range of...SeniorWork from homeFlexible hours$85k - $105k per year
...About the Role As a Senior Adobe Martech Specialist, you'll be the ultimate subject matter expert in designing, configuring, and maximizing our clients' enterprise Adobe ecosystems. Working alongside strategists, designers, developers, and enterprise stakeholders, you will...SeniorWork from homeFlexible hours- ...power our economy, this could be your next big opportunity. We can’t wait to get to know you! Purpose of the role The Senior Payroll Specialist is a senior individual contributor and payroll operations lead responsible for delivering accurate, compliant, and well-...SeniorFull time
$75k - $85k per year
...team that's changing the game, XR is the place for you. Let’s shape the future together! The Opportunity The Senior Technical Support Specialist is a highly skilled, technically focused position that operates at the intersection of support, engineering, and automation...SeniorLong term contractFull timeInternshipLocal areaWorldwide$89k - $121k per year
...Drive smarter staffing decisions that empower people and enable business performance. The Role As a Senior Resource Specialist, you will play a key role in delivering effective, transparent, and data-driven resourcing across the Canada business. Sitting at the intersection...SeniorInternshipImmediate start- SAP BTP Solution Architect (SAP Integration Suite, S/4HANA, Cloud Architecture) Role: SAP BTP Architect Hybrid: 2-3 days a week onsite Position Summary: • The SAP BTP Architect is responsible for designing, governing, and delivering scalable, secure, and ...MiddlewareContract work2 days per week3 days per week
$106.71k - $177.84k per year
...Your opportunity: Under the general direction of the Associate Director, Receivables and General Accounting, the Senior Accounting Specialist performs a variety of complex analyses and interpretation of confidential data relating to benefits budgeting and forecasting...SeniorFull timeWork at office$70.8k - $95.8k per year
...organization, and each other. THE ROLE Reporting to the Manager, Complex Transactions, this is a fantastic opportunity for an experienced Senior Pension Services professional to join a team of high performing professionals to make a great impact. You will be involved in a...SeniorLong term contractFull timeInternshipWork at officeRemote workFlexible hours2 days per week$68k - $108k per year
...commodity tax and are looking for a new challenge, we would love to hear from you. Zurich Canada is currently hiring a Senior Tax Specialist who can demonstrate strong accounting, technical, and analytical skills. You are able to understand complex instructions and...SeniorApprenticeshipInternshipWork at officeLocal areaWorldwide- ...The Opportunity As a Senior Collections Specialist, you will manage client collections in a timely and effective manner while maintaining positive client relationships and working collaboratively with the partners, billing and financial management team. Responsibilities...SeniorPermanent employment
$50.46k - $90.32k per year
...Job Responsibility: Job Summary We are seeking a highly skilled and experienced Senior SEO Specialist to join our dynamic CNSS marketing team. The ideal candidate will have a deep understanding of search engine optimization strategies and techniques, with a proven track...SeniorFull timePart timeRemote workMonday to fridayShift workDay shift$90 per hour
Job Responsibility: This role will require contractors to come onsite for occasional meetings.This is a new security modernization project from OPS. They will be reviewing vendor security.They will need to have experience reviewing SOC 2 Type 2 documentation and writing recommendations...SeniorHourly payFull timeFor contractorsFixed term contractRelocationMonday to friday- We are seeking a dedicated Senior Application Support Specialist to deliver comprehensive production application support, issue resolution, and project coordination across enterprise IT environments. In this role, you will manage full incident lifecycles, coordinate cross-functional...SeniorContract work
$80k - $120k per year
...around the globe supported by 303,000 employees in over 100 countries and across 864 companies. Job Description Senior Sales Enablement Specialist Location: Canada remote Position Summary The Senior Sales Enablement Specialist is responsible for developing,...SeniorFull timeRemote workFlexible hours$50 - $60 per hour
About the job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position...SeniorRemote jobContract workSummer work$110k - $150k per year
...driven by optimism, purpose, and a commitment to making a meaningful difference for our clients and communities. We are seeking a Senior Instrumentation & Controls Engineer to join our Electrical, Instrumentation & Controls team in Toronto or Calgary . In this role,...SeniorContract workFor contractorsRemote work$88k - $121k per year
.... This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. The Senior Regional Marketing Specialist We are looking for a strategic and results-driven individual to support the planning and execution of our regional...SeniorLocal areaWorldwide$75k - $85k per year
...Move Your Career Forward with DAC as a Senior Digital Media Specialist Who We Are We are DACa global full-funnel performance media agency dedicated to delivering transformative results. With expertise spanning SEO paid media creative production analytics and local...SeniorFull timeContract workCasual workWork at officeLocal areaRemote work3 days per week$115 per hour
...Public Sector. we are looking for contract S enior Cyber Security Specialist Duration : 12 month Experience required: ~7+ years of... ...effectively liaise with stakeholders ranging from technical teams to senior executives within the organization. Adeptness in understanding,...SeniorHourly payFull timeContract workFor contractorsFixed term contractRelocationShift work- ...based on multiple funding channels and cross ministry dependencies. Experience in articulating and prioritizing issues and risks at senior executive levels and recommending mitigation strategies for decision makers. Awareness / knowledge of emerging I&IT trends and...SeniorLong term contractContract work
$93k - $113k per year
...to its people, find out more about what Aviso has to offer at . The Opportunity: We’re looking to fill an opening for a Senior Specialist, Tax & Fund Reporting, to join our Fund Reporting team. Reporting to the Manager, Fund Reporting & Administration, the Senior...SeniorFull timeInternship- We are seeking a highly accomplished Senior Security Specialist to lead multiple initiatives across Security Governance, Risk, and Compliance (GRC) and Cyber Defense Operations. In this role, you will hold complete technical ownership over security strategy, audit alignment,...SeniorContract workWork at officeRemote work
- ...Must Haves: Senior experience designing and developing enterprise Business Intelligence and analytics solutions. Extensive experience developing Power BI dashboards reports semantic models and datasets. Experience developing dimensional data warehouses using star...SeniorFull time
- We are seeking a highly skilled Senior Cloud Application Specialist to lead the migration and integration of enterprise automation platforms. In this role, you will transition existing source-control workflows to cloud-managed automation environments and integrate infrastructure...SeniorContract workWork at officeShift work
- We are seeking a highly accomplished Senior Systems Testing/QA Specialist for a contract opportunity based in Toronto. In this role, you will take on a premier quality engineering capacity within software testing and quality assurance streams, specializing in web applications...SeniorContract work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to senior middleware specialist.. Be the first to apply!
Related searches
- optimization specialist Toronto, ON
- workforce specialist Toronto, ON
- bim specialist Toronto, ON
- literacy specialist Toronto, ON
- child life specialist Toronto, ON
- learning specialist Toronto, ON
- ecommerce specialist Toronto, ON
- accommodation specialist remote Toronto, ON
- crisis intervention specialist Toronto, ON
- immigration specialist Toronto, ON