Saim is available for hire
Hire SaimSaim Sohail
Verified Expert in Engineering
Software Developer
London, United Kingdom
Toptal member since September 23, 2022
Bio
With over six years of experience and a history of working in the financial, medical, and immigration services industries, Saim is a highly skilled developer proficient in C# and .NET technologies. A seasoned professional with experience in multiple domains, he's worked with multinationals and has helped startups in their growth. Saim is ready to bring his broad skill set and expertise in cost-effective development to any company.
Portfolio
Automate software solutions limited
Twilio, .NET, Angular, Azure, SQL, WhatsApp API, Webhooks, WebSockets, SignalR...
Experian
.NET 8, .NET 6, Entity Framework, Azure, Angular, TypeScript, Veracode...
Builder Rocket LLC
.NET, C#, React, JavaScript, Azure, Amazon Web Services (AWS), Amazon EC2...
Experience
- Microsoft SQL Server - 6 years
- .NET - 6 years
- C# - 6 years
- SQL - 6 years
- ASP.NET Core MVC - 4 years
- Microservices - 3 years
- .NET Core - 3 years
Availability
Part-time
Preferred Environment
Windows, Java, Microsoft Visual Studio
The most amazing...
...thing I've developed—in just 15 days—is a fully functional payroll system that calculates tax and transfers salaries without a fraction of an error.
Work Experience
Twilio Integration Specialist
2024 - 2024
Automate software solutions limited
- Designed and developed a WhatsApp chat module using Twilio WhatsApp API.
- Designed and developed a WhatsApp marketing campaign module using Twilio WhatsApp API.
- Implemented Azure SignalR for real-time WhatsApp chat system.
- Managed all the services on Azure Cloud (App Service, SQL Server, and Azure Blob).
- Implemented design mockups on the front end using Angular and TypeScript.
- Delivered a high-quality system to the client.
Technologies: Twilio, .NET, Angular, Azure, SQL, WhatsApp API, Webhooks, WebSockets, SignalR, TypeScript, REST APIs, Twilio API
Software Engineer
2023 - 2024
Experian
- Participated in Agile gathering daily scrums, refinements, and retrospectives.
- Contributed to architecture and design meetings.
- Developed and maintained the back end open banking services in .NET 6.
- Fixed Veracode vulnerabilities. and upgraded older .NET versions to .NET 6 and 8.
- Generated complex open banking reports.
- Wrote high-quality unit tests using XUnit to maintain code quality.
- Developed front end functionalities in Angular and TypeScript.
- Wrote front-end unit tests and automated front-end end-to-end journeys using Playwright. Triggered end-to-end test cases in pipeline executions to ensure high-quality code releases.
Technologies: .NET 8, .NET 6, Entity Framework, Azure, Angular, TypeScript, Veracode, Security Software Development, Automation, Playwright, SQL, Redis, CI/CD Pipelines, REST APIs
.NET and React Developer
2023 - 2023
Builder Rocket LLC
- Upgraded and rearchitected a .NET application from 4.2 to .NET 6.
- Changed the uploading mechanism to Azure Blob and migrated all previous data from EC2 to Azure Blob. Previous files and documents were uploaded and saved in AWS EC2 machine.
- Fixed bugs in the front-end code in React and added new features.
- Deployed all components of this software from the EC2 machine to Azure services.
Technologies: .NET, C#, React, JavaScript, Azure, Amazon Web Services (AWS), Amazon EC2, Azure Blobs, Microsoft SQL Server, Proof of Concept (POC), RESTful Services, Cloud Services, REST APIs
Full-stack Developer
2023 - 2023
Jerome Allen Weber
- Gathered all requirements from the client and drafted the architecture using .NET 6, React, MS SQL SERVER, and Azure Cloud.
- Scrapped the client's questionnaires from the old system to the new system.
- Integrated Stripe for subscriptions and payments.
- Integrated SendGrid to send emails and integrated the client inbox to fetch and filter emails using GPT API.
- Created and used different Azure services like Azure Cognitive, Azure Blob Storage, SQL SERVER, and Azure Web App.
Technologies: Web App Development, JavaScript, Full-stack, ChatGPT, Python, Web Scraping, ASP.NET, .NET 6, SQL Server 2016, Azure, React, Stripe, SendGrid, Stripe API, SendGrid API, Moq, Unit Testing, Proof of Concept (POC), Twilio, RESTful Services, Cloud Services, REST APIs
Developer
2022 - 2023
Phoenix Title and Registration LLC
- Developed a full MVP from scratch for a leasing company using .NET 6.
- Built different features based on the client's needs.
- Created the whole infrastructure on Azure and configured Git source control for the client.
- Used Azure Cognitive Services to extract text from different documents and fill up information in the system.
Technologies: JavaScript, SQL, Azure Cognitive Services, .NET 6, Microservices, ASP.NET MVC, ASP.NET Core MVC, Entity Framework Core, ASP.NET Core, Front-end Development, Microsoft Visual Studio, Solution Architecture, Web Applications, Microsoft SQL Server, Scrum, Back-end, Testing, Object-oriented Programming (OOP), Serializer/Deserializer (SerDes), Entity Framework, Performance, Data Structures, Software Design, Software Deployment, Azure App Service, Git, Azure DevOps Services, Front-end, Web Technologies, Mobile Back-end, Data Reporting, Data Analytics, Software Development, Moq, Unit Testing, Proof of Concept (POC), RESTful Services, Cloud Services, REST APIs
Senior Software Engineer
2020 - 2022
WebSoft Technologies
- Converted a monolithic SaaS-based product into a modern microservices architecture application.
- Implemented around 20 microservices and a reverse proxy server having all the logic to run the application smoothly.
- Implemented CI/CD pipelines for deployments and RabbitMQ for messaging queuing.
- Developed an emailing module using SendGrid, Gmail, and Outlook APIs and added a priority queue for sending.
- Worked on client-side functionalities in React and helped the team in integration.
- Managed different Azure services like Kubernetes and function applications.
- Developed a reminder module to send reminders and follow-up emails.
- Integrated Paypal, Outlook, Office365, and Gmail APIs.
Technologies: .NET, .NET Core, .NET 6, gRPC, Azure DevOps, Microservices, Azure, CI/CD Pipelines, Kubernetes, Microsoft SQL Server, React, Redux, MediatR, CQRS, SQL, C#.NET, REST, SOLID Principles, REST APIs, APIs, JSON, NoSQL, PostgreSQL, JavaScript, HTML, Web Development, Full-stack, ASP.NET, Content Management Systems (CMS), ASP.NET MVC, Algorithms, Databases, Cloud, API Integration, Python, Authentication, CSS, Architecture, SQL Server 2016, MongoDB, Docker, Cryptography, Encryption, MySQL, Elasticsearch, Microsoft Web Services, RabbitMQ, Agile, Full-stack Development, ASP.NET Core, Front-end Development, Microsoft Visual Studio, Solution Architecture, Web Applications, Windows Services, Scrum, Web Scraping, Scrapy, Back-end, Message Queues, Testing, Object-oriented Programming (OOP), XML, Serializer/Deserializer (SerDes), Entity Framework, Performance, BrainTree, Card Payments, Payment APIs, PHP, Data Structures, Software Design, Software Deployment, Azure App Service, Git, Azure DevOps Services, Entity Framework Core, Front-end, Web Technologies, Dapper, Stripe, Mobile Back-end, Scraping, Data Reporting, Data Analytics, Data Scraping, Software Development, Chrome Extensions, Moq, Unit Testing, RESTful Services, Cloud Services
Software Engineer
2019 - 2020
Cereberal
- Built a UK-based POS from scratch using .NET Core MVC. Added stock management, client management, and accounts modules. Integrated the system with DNA payments.
- Used Azure WebSocket, Azure Relay to reflect live data on the POS kitchen screen where all the orders, statuses, and dispatching occur. This helped a restaurant run smoothly without refreshing.
- Developed a UAE-based delivery system with optimized SQL queries to enhance the system's performance.
- Created a complete in-house payroll system in 15 days with all of the company's policies and requirements.
Technologies: .NET Core, .NET, C#, Microsoft SQL Server, MVC Design, React Native, JavaScript, jQuery, Entity Framework, SQL, C#.NET, SOLID Principles, JSON, PostgreSQL, HTML, Web Development, Full-stack, WhatsApp API, WhatsApp, ASP.NET, Content Management Systems (CMS), ASP.NET MVC, Algorithms, Databases, Cloud, API Integration, Authentication, CSS, Architecture, SQL Server 2016, Cryptography, Encryption, Chart.js, MySQL, Microsoft Web Services, Angular, TypeScript, Agile, Full-stack Development, ASP.NET Core, Front-end Development, Microsoft Visual Studio, Instagram API, Web Applications, Scrum, Web Scraping, Scrapy, Back-end, Message Queues, Testing, Object-oriented Programming (OOP), XML, XSD, Serializer/Deserializer (SerDes), Jira, Performance, Redis, Amazon Web Services (AWS), PHP, Data Structures, Software Design, Software Deployment, Azure App Service, Git, Azure DevOps Services, Front-end, Web Technologies, AWS Lambda, eCommerce APIs, Mobile Back-end, Scraping, Data Reporting, Data Analytics, Data Scraping, Software Development, Unit Testing, RESTful Services, Cloud Services, REST APIs
Software Engineer
2016 - 2019
JET Health Solutions
- Managed an accounting module. Added new features and fixed existing bugs.
- Enhanced and added different logic while working on complex stored procedures.
- Developed a secure invoice download system and Smarty streets for address verification.
- Synced our system with the US bank using the ACH file provided by the bank, added file reading in C#, and processed in SQL.
- Performed pre- and post-audit every month before the $32 million billing session. Writing complex SQL queries helped this process.
Technologies: .NET, C#, ASP.NET Web Forms, Windows Communication Foundation (WCF), Microsoft SQL Server, SQL, C#.NET, SOAP, SOLID Principles, APIs, JSON, PostgreSQL, JavaScript, HTML, Web Development, Full-stack, ASP.NET, Content Management Systems (CMS), ASP.NET MVC, HIPAA Compliance, Algorithms, Databases, Cloud, API Integration, Authentication, CSS, SQL Server 2016, Cryptography, Encryption, MySQL, Microsoft Web Services, Angular, Java, Full-stack Development, Front-end Development, Telerik, Microsoft Visual Studio, Web Applications, Back-end, Message Queues, Testing, Object-oriented Programming (OOP), XML, Serializer/Deserializer (SerDes), Data Structures, Software Deployment, SuiteCRM, Git, Front-end, Web Technologies, Data Reporting, Data Analytics, Software Development, RESTful Services, Cloud Services, REST APIs
Experience
Ezymigrate
https://www.ezymigrate.com/It is a CMS currently used in the Australian and New Zealand markets. It serves immigration advisors and assists them in filing visa applications for candidates across the globe.
It is integrated with other platforms to assist its users in performing daily tasks. Some of the few platforms include Xero Accounting, Gmail, Outlook, Google Drive, and OneDrive.
It is integrated with other platforms to assist its users in performing daily tasks. Some of the few platforms include Xero Accounting, Gmail, Outlook, Google Drive, and OneDrive.
Zash POS
https://getzash.com/A point-of-sale for restaurants in the UK market. It was configured with DNA payments, and it had all functionalities required by a restaurant to run smoothly. Additionally, it was configured with a contactless payment system.
Duliver
A software for courier service in the UAE. It was made custom for the need of Duliver, and all of its business logic was implemented in it. It has modules like accounting, tracking, client management, and role-based user management integrated together for smooth usage.
Web Scraper
I created a scraper in Python to perform multiple tasks.
FEATURES
• Fetches data from various health insurance websites to find the best health coverage plans.
• Automates the user onboarding process and behaves like a bot.
• Passes Google reCAPTCHA v2 and v3 due to its configuration.
• Authenticates a mobile number using a code sent to the user's phone.
• Authenticates an email address using a code sent to the user's email.
FEATURES
• Fetches data from various health insurance websites to find the best health coverage plans.
• Automates the user onboarding process and behaves like a bot.
• Passes Google reCAPTCHA v2 and v3 due to its configuration.
• Authenticates a mobile number using a code sent to the user's phone.
• Authenticates an email address using a code sent to the user's email.
Education
2013 - 2017
Bachelor's Degree in Computer Science
Punjab University College of Information Technology - Lahore, Pakistan
Skills
Libraries/APIs
React, REST APIs, Moq, Twilio API, MediatR, jQuery, Entity Framework, WhatsApp API, Stripe, Chart.js, Azure Cognitive Services, Instagram API, Stripe API, SendGrid API, SignalR, Playwright
Tools
Azure App Service, Git, Azure DevOps Services, Microsoft Web Services, Microsoft Visual Studio, Dapper, RabbitMQ, Jira, ChatGPT, SendGrid
Languages
C#, JavaScript, SQL, C#.NET, HTML, XML, PHP, Python, CSS, C++, TypeScript, Java, XSD
Frameworks
.NET, .NET Core, ASP.NET Core MVC, ASP.NET, ASP.NET MVC, Angular, Entity Framework Core, ASP.NET Core, Scrapy, gRPC, ASP.NET Web Forms, Redux, React Native
Paradigms
CQRS, MVC Design, REST, Agile, Scrum, Testing, Object-oriented Programming (OOP), Unit Testing, Azure DevOps, Microservices, HIPAA Compliance, Security Software Development, Automation
Platforms
Kubernetes, Twilio, Azure, SuiteCRM, Docker, Telerik, Amazon Web Services (AWS), Windows, AWS Lambda, Amazon EC2
Storage
Microsoft SQL Server, JSON, PostgreSQL, Databases, SQL Server 2016, MySQL, Elasticsearch, NoSQL, MongoDB, Redis, Azure Blobs
Other
.NET 6, Data Structures, Algorithms, Software Design, Software Deployment, SOLID Principles, APIs, Web Development, Full-stack, Content Management Systems (CMS), API Integration, Authentication, Architecture, Encryption, Full-stack Development, Web Applications, Web Scraping, Back-end, Message Queues, Serializer/Deserializer (SerDes), Performance, BrainTree, Card Payments, Payment APIs, Web Technologies, Mobile Back-end, Scraping, Data Scraping, Software Development, Chrome Extensions, Proof of Concept (POC), RESTful Services, Cloud Services, CI/CD Pipelines, SOAP, WhatsApp, Cloud, Cryptography, Front-end Development, Solution Architecture, Windows Services, Front-end, eCommerce APIs, Data Reporting, Data Analytics, Windows Communication Foundation (WCF), Web App Development, Webhooks, WebSockets, .NET 8, Veracode
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