Walid Saliba
Verified Expert in Engineering
Senior Solution Architect Developer
Montreal, QC, Canada
Toptal member since April 27, 2021
Walid is a certified architect, expert in digital solution delivery, agile architecture, microservices, cloud solutions, and API-based integrations. He creates resilient, scalable, and maintainable architecture and leads teams to delivery. Walid defined the architecture for a cloud-based HR system supporting 28,000 employees, designed a high-security system to eliminate manual processing of thousands of law enforcement documents, and created geospatial projects for a public security department.
Portfolio
Experience
- Solution Architecture - 15 years
- Architecture - 15 years
- Mobile Apps - 15 years
- App Integration - 7 years
- APIs - 7 years
- Agile - 6 years
- Microservices - 5 years
- Cloud - 3 years
Work Experience
Senior AI Enterprise Architect
ULTA
- Participated in defining the AI strategy and AI platform selection.
- Rolled out AI tools to accelerate the full software development lifecycle.
- Led the AI architecture team in defining the AI agent reference architecture.
- Reviewed and assessed AI technologies such as LLMs, AI code assistants, and AI platforms (Gemini, OpenAI, Databricks).
Enterprise Architect
Commonwealth Financial Network
- Developed Azure multitenant-based IAM strategy for CFN clients and employees.
- Developed technological roadmaps for improving critical business capabilities to support business goals and objectives.
- Reviewed all EARB presentations for quality and completeness.
- Supported solution architects in various initiatives.
- Participated in application and infrastructure rationalization to lower IT costs by 15%.
Senior Solution Architect
National Bank of Canada
- Assisted product owners, analysts, and development teams to deliver line of credit origination, document exchange, and account opening products.
- Elaborated and communicated the documentation standards to the architecture team.
- Guided several initiatives related to the protection of personal information and financial compliance.
Senior Solution Architect
Business Development Bank of Canada
- Collaborated with product owners and led the technical team to develop the market's first mobile app to help entrepreneurs better manage their business.
- Led the architecture of Express Loan, a mobile app that reduced the loan process time from 10 days to 30 minutes.
- Acted as the solution architect for nine mobile apps aimed at improving the efficiency and capacity of business development managers.
- Implemented an electronic signature solution for business loans, increasing customer satisfaction and reducing travel time by 50% for business development managers.
- Served as the representative of the mobility stream for enterprise architecture—data lake, AI, analytics, IAM, API management, and cloud initiatives.
Solution/Enterprise Architect
Ville de Montreal
- Defined the architecture for a cloud-based HR system to support 28,000 employees and 13 collective agreements.
- Elaborated on the enterprise architecture of the Judiciary Affairs sector to reduce the exuberant costs of redundant systems.
- Designed a high-security system to eliminate manual processing of thousands of law enforcement documents.
- Created geospatial projects for the public security department.
Solution Architect
Freelance
- Designed the architecture for several large systems such as a graduate's admissions system, incident management system, employee portal, on-train mobile platform, and other systems.
- Conduct architecture audits and recommended corrective actions.
- Conducted vendor selection processes through formal RFPs.
- Developed a mobile software development college certification program to help developers reintegrate the market with required skills.
Project History
BDC Mobile App
https://apps.apple.com/ca/app/bdc-mobile/id1489622115Mindful and Fit
Education
Master's Degree in Computer Science
McGill University - Montreal, Canada
Bachelor of Engineering Degree in Computer and Communication Engineering
American University of Beirut - Beirut, Lebanon
Certifications
AWS Solutions Architect Associate
Amazon Web Services (AWS)
AWS Certified Cloud Practitioner
Amazon Web Services (AWS)
Canadian Security Clearance
Government of Canada
Skills
Libraries/APIs
React
Tools
AWS AppSync, Amazon Cognito, SailPoint, Auth0, Lucidchart, Confluence, Google Analytics
Paradigms
Agile, Microservices, REST, Web Architecture
Platforms
Android, Web, Amazon Web Services (AWS), Azure, MuleSoft, Oracle, SharePoint, iOS, Salesforce, Databricks, Tealium
Languages
Java, C#, JavaScript
Frameworks
Scaled Agile Framework (SAFe), .NET, React Native
Storage
Amazon DynamoDB, Microsoft Entra ID, Databases
Other
Mobility, Architecture, APIs, App Integration, Mobile Apps, Solution Architecture, Cloud, Identity & Access Management (IAM), Digital Signatures, Enterprise Architecture, Request for Proposal (RFP), Large Language Models (LLMs), Strategic Design, Cost Cutting (Cost-out), Artificial Intelligence (AI), Engineering, Computer Science, Security, ServiceNow, Predictive Analytics, Object-oriented Databases
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