Walid Saliba, Developer in Montreal, QC, Canada
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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.


Commonwealth Financial Network - EA Team
Architecture, Enterprise Architecture, Web Architecture
National Bank of Canada
Architecture, Amazon Web Services (AWS), Solution Architecture, Agile...
Azure, Microservices, APIs, App Integration, Identity & Access Management (IAM)...




Preferred Environment

Amazon Web Services (AWS), Cloud, Architecture, Agile, Microservices, Strategic Design, APIs, REST, Azure, Mobile Apps

The most amazing...

...app that I have architected combines cloud and AI to provide Canadian entrepreneurs with business recommendations on their mobile device.

Work Experience

Enterprise Architect

2021 - PRESENT
Commonwealth Financial Network - EA Team
  • 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.
Technologies: Architecture, Enterprise Architecture, Web Architecture

Senior Solution Architect

2020 - PRESENT
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.
Technologies: Architecture, Amazon Web Services (AWS), Solution Architecture, Agile, Scaled Agile Framework (SAFe), App Integration, Identity & Access Management (IAM), REST, APIs, Microservices, Mobility, Cloud, Mobile Apps

Senior Architect

2016 - 2020
  • 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 loan process time from ten 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.
Technologies: Azure, Microservices, APIs, App Integration, Identity & Access Management (IAM), Artificial Intelligence (AI), MuleSoft, Digital Signatures, Mobile Apps, Mobility, Solution Architecture, .NET, Agile, Scaled Agile Framework (SAFe), REST, Architecture, Cloud, Enterprise Architecture

Solution/Enterprise Architect

2013 - 2016
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.
Technologies: Oracle, .NET, Enterprise Architecture, Solution Architecture, Architecture

Solution Architect

2008 - 2013
  • 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.
Technologies: Solution Architecture, Request for Proposal (RFP), SharePoint, Mobile Apps, REST, APIs, Architecture, Mobility

BDC Mobile App

A new tool in the hands of Canadian entrepreneurs to help them make better decisions and reach their business goals. The app uses cloud infrastructure and artificial intelligence to deliver state-of-the-art capabilities, availability, and performance.

Mindful and Fit

In times of restricted access to gyms, I built this simple Android and iOS app to help athletes reserve their spot at Mindful and Fit gym and confirm their health status at check-in by simply scanning a barcode. The app also provides reference information regarding the COVID-19 recommendations from the government of Quebec.
1992 - 1996

Master's Degree in Computer Science

McGill University - Montreal, Canada

1985 - 1989

Bachelor of Engineering Degree in Computer and Communication Engineering

American University of Beirut - Beirut, Lebanon

APRIL 2021 - APRIL 2024

AWS Solutions Architect Associate

Amazon Web Services


AWS Certified Cloud Practitioner

Amazon Web Services


Canadian Security Clearance

Government of Canada




AWS AppSync, Amazon Cognito


Android, Web, Amazon Web Services (AWS), Azure, MuleSoft, Oracle, SharePoint, iOS


Java, C#, JavaScript


Agile, Microservices, REST, Web Architecture


Scaled Agile Framework (SAFe), .NET, React Native


Amazon DynamoDB


Mobility, Architecture, APIs, App Integration, Mobile Apps, Solution Architecture, Cloud, Identity & Access Management (IAM), Digital Signatures, Enterprise Architecture, Request for Proposal (RFP), Strategic Design, Cost Cutting (Cost-out), Artificial Intelligence (AI), Engineering, Computer Science, Security

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