[Remote] Sr. Software Engineer

Note: The job is a remote job and is open to candidates in USA. onPhase is seeking an experienced Senior Software Engineer to join their software development team focused on financial technology applications. The role involves developing and maintaining large-scale invoice processing, accounts payable, and document management systems for enterprise clients, requiring a strong understanding of financial workflows and systems.

Responsibilities

• Developing and maintaining large-scale invoice processing, accounts payable, and document management systems serving enterprise clients across multiple industries
• Bringing hands-on experience in financial or B2B software, with a strong understanding of AP/AR workflows, Payments systems, and broader Finance domain processes

Skills

• Hands-on experience in financial or B2B software
• Strong understanding of AP/AR workflows
• Payments systems experience
• Broader Finance domain processes knowledge
• Advanced C# and VB.NET proficiency
• .NET Framework 4.6–4.8 experience
• .NET 6/7/8 modern development experience
• ASP.NET Web Forms and MVC experience
• ASP.NET Web API experience
• Entity Framework knowledge
• Windows Services experience
• Blazor Server knowledge
• AngularJS experience
• JavaScript/jQuery experience
• XSLT transformations knowledge
• Telerik UI Components experience
• OAuth 2.0 & JWT knowledge
• SQL Server experience
• Database-first development experience
• ADO.NET knowledge
• Amazon S3 experience
• Multi-tenant SaaS architecture knowledge
• EDI processing experience
• File processing knowledge
• SOAP/REST web services experience
• Payment processing integrations knowledge
• MSBuild and Visual Studio experience
• IIS deployment and management experience
• Git version control experience
• PowerShell scripting knowledge
• Azure DevOps Pipelines experience
• NuGet Package Management knowledge
• Bachelor's degree in Computer Science or related discipline
• 5+ years of .NET development experience
• Finance/FinTech background
• Strong SQL Server database design and optimization skills
• Self-motivated with ability to navigate complex, large codebases
• Strong problem-solving skills for debugging and optimizing enterprise applications
• Excellent communication skills for collaborating with business stakeholders and QA teams
• Experience with legacy modernization and gradual migration strategies

Company Overview

Company H1B Sponsorship