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James Singleton

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Available to hire

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Work Experience

Staff Software Engineer at Venmo
April 1, 2024 - July 10, 2025
Developed and maintained React and Blazor-based front-end applications for account management and identity verification. Migrated legacy services to .NET 6 and modular microservices hosted on Azure. Created CLI tools for database schema automation. Developed token-based authentication gateway using ASP.NET Core and IdentityServer4. Built secure RESTful APIs for external banking integration using OAuth2. Delivered Angular-based internal portals and established automated CI/CD pipelines with Azure DevOps and GitHub Actions. Ensured compliance with PCI-DSS and GDPR, hosted review sessions, and collaborated with product and business teams.
Staff Software Engineer II at Venmo
April 1, 2024 - Present
Architected and developed secure, real-time peer-to-peer payment services handling high-throughput financial transactions. Designed React dashboards for support agents and cross-platform admin tools using Angular and Blazor to manage fraud detection workflows. Created scalable microservices using .NET Core and C# on Azure Service Fabric, containerized with Docker and deployed via Kubernetes. Refactored legacy services using SOLID principles and DDD patterns. Optimized services for performance and integrated telemetry with Azure Monitor and Application Insights. Collaborated with fraud and compliance teams to implement validation logic using Azure ML. Engaged with stakeholders for requirements, demos, and technical reviews.
Senior Software Engineer at Venmo
April 1, 2022 - July 10, 2025
Enhanced CRM systems with integrations to Microsoft Outlook, Active Directory, and ERP software. Designed Blazor front-end modules for ticket creation and case management. Built Angular-based escalation dashboards with real-time features. Created REST APIs to unify customer data access. Authored Power BI dashboards to surface KPIs for leadership. Coordinated with product and support teams to improve tooling and resolution times. Delivered onboarding materials and served as a point of contact for escalated support tickets.
Senior Software Engineer at Pariveda Solutions
September 1, 2020 - July 10, 2025
Led front-end architecture for a utilities field operations platform using Angular and React. Built REST APIs and service layers in .NET Core for dispatch and role-based access. Designed PostgreSQL schemas and stored procedures. Managed client demonstrations and onboardings. Collaborated with DevOps teams to containerize services and manage deployments via AWS ECS and Jenkins. Implemented secure OAuth login mechanisms. Delivered custom dashboards with React and d3.js. Participated in sprint planning and client roadmap reviews.
Software Engineer (A1) at Pariveda Solutions
April 1, 2020 - July 10, 2025
Developed internal HR portals and dashboards using Angular and Blazor to enhance employee self-service. Built scheduling systems for healthcare providers with .NET Core, PostgreSQL, and React to optimize shift allocation. Designed and deployed REST APIs for calendar integration and notifications. Created and maintained CI pipelines using Jenkins and GitHub Actions. Worked with client stakeholders for solution demos and requirements refinement. Participated in DevSecOps initiatives using IdentityServer and Azure AD. Delivered ETL automation with Python and SSIS. Created unit test libraries with NUnit, xUnit, and Moq.
Software Engineer (C2)
April 1, 2019 - July 10, 2025
Developed a cloud-based HR onboarding platform featuring document management, role-based approvals, and compliance tracking. Delivered reusable UI components using React and Angular. Built secure RESTful services with ASP.NET Core and EF Core backed by PostgreSQL. Created SSRS reports and automated document exports for compliance. Integrated DocuSign APIs for digital signature workflows. Worked with clients in legal and HR to gather specs and validate delivery. Facilitated training workshops and participated in UX and accessibility design sessions.
Software Developer at Stantec
January 1, 2018 - July 10, 2025
Developed software solutions supporting municipal planning including water, sewer, and land usage systems. Delivered GIS-integrated visualization tools using WPF, C#, and ESRI SDKs. Created data-driven reporting modules using SSRS and ASP.NET MVC for compliance. Worked with Oracle and MS SQL Server databases for real-time data sync. Implemented mobile-responsive modules with Angular and jQuery. Participated in cross-departmental planning. Built custom APIs and plug-ins for in-house CMS platforms and maintained CI pipeline with comprehensive test coverage.
Software ITS Operator
July 1, 2016 - July 10, 2025
Developed a contact and lead management platform with campaign tracking and dashboards in WinForms. Delivered HIPAA-compliant EMR system supporting patient records, prescriptions, and appointments. Integrated Google APIs for calendar sync and OAuth login. Developed plug-ins to manage data from eBay seller accounts via SOAP and REST APIs. Built e-commerce modules supporting PayPal and Stripe integrations. Delivered Angular-based admin interfaces for content management. Maintained legacy VB.NET services while upgrading key modules to .NET Framework and Core. Provided technical support and training across industries and time zones.

Education

BSc at Louisiana State University
January 1, 2017 - December 31, 2017

Qualifications

Add your qualifications or awards here.

Industry Experience

Financial Services, Healthcare, Software & Internet, Energy & Utilities

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
See more

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