Software Developer

DUTIES: Design and develop backend components for enterprise financial and compliance applications, focusing on payroll tax management for state withholding and unemployment insurance (e.g., Alabama A-6, Georgia G-7, Michigan 5080, Washington PFML), payment processing, and electronic filing; leveraging C#, .NET Core, .NET 8, and MS SQL Server to build scalable RESTful APIs, integrating with state tax portals (e.g., My Alabama Taxes, Georgia Tax Center) and ensuring compliance with IRS e-filing standards, with robust error handling and audit logging. Integrate business applications with CRM platforms to enable secure and efficient data exchange of customer, payroll tax, and compliance information, using RESTful APIs and industry-standard authentication protocols such as JWT, OpenID, OAuth2. Develop and maintain data-intensive systems to support high-volume processing of financial transactions, tax liabilities, and compliance reports, leveraging background job schedulers (e.g., CRON jobs, Lead end-to-end development of reliable care-agent tooling and software services integrating contact-center platforms with backend systems. Own architecture, performance, security, production operations, and technical direction while partnering with product, care operations, QA, and engineering teams. Translate operational workflows into scalable solutions, mentor engineers, and improve tools using agent feedback, operational metrics, and AI-assisted development practices. Top Skills: Amazon EventbridgeAmazon KinesisAWSAws LambdaClaudeCursorJavaKotlinMcp Servers Affirm

background services) to optimize automation and system performance. Modernize and secure legacy application modules by implementing robust authentication and authorization mechanisms, refactoring code for maintainability, and ensuring compliance with evolving business and security standards. Collaborate with cross-functional teams to translate complex business requirements into robust software logic for tax calculations, payment distribution, data validation, and reporting, ensuring solutions meet organizational and regulatory standards. May work from a home office and anywhere in the U.S. #LI-DNI MINIMUM REQUIREMENTS: Bachelor’s degree in Computer Science, Computer Engineering, Computer Science and Telecommunications Engineering, or related field, and 3 years of work experience to involve: (1) demonstrated expertise in designing, developing, and maintaining backend components and services using C# and the .NET framework (including .NET Core) for enterprise-scale applications, with a focus on reliability, scalability, and maintainability; (2) RESTful API development and secure authentication, including the implementation of industry-standard authentication and authorization protocols such as JWT and OAuth; (3) MS SQL/Database design and optimization, including design, implement, and optimize relational database schemas, stored procedures, and queries using Microsoft SQL Server (MS SQL) to support data-intensive business processes and ensure high performance and data integrity. Additionally, 2 years of experience to involve: (4) development experience in Financial Systems and System Integration, including the design, development, and maintenance of financial solutions and compliance reporting; and (5) proven ability to develop and implement integration solutions between financial systems and CRM platforms. May work from a home office and anywhere in the U.S.

United States Easy Apply 236K-325K Annually Senior level 236K-325K Annually Senior level Big Data * Fintech * Mobile * Payments * Financial Services Lead technical vision and strategy for Affirm’s Cards backend engineering organization. Architect scalable and reliable platforms, guide cross-team initiatives, champion AI adoption and engineering excellence, influence technical roadmaps, and mentor engineers through Staff level. The role requires strong architectural expertise, organizational leadership, project management, communication, and cross-functional collaboration. Top Skills: AIJavaScriptKotlinReact Native Affirm, United States Easy Apply 173K-255K Annually Senior level 173K-255K Annually Senior level Big Data * Fintech * Mobile * Payments * Financial Services Own and deliver backend lakehouse infrastructure goals, lead engineers through complex problems, and build highly available distributed data systems. Collaborate with product, design, analytics, and engineering stakeholders; define scalable technical solutions; improve code quality and engineering standards; monitor operational health; support on-call responsibilities; and mentor team members. Top Skills: AirflowAWSFlinkIcebergKafkaKotlinKubernetesMySQLPythonSnowflakeSparkTerraform

What you need to know about the Colorado Tech Scene

With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.

Key Facts About Colorado Tech

• Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
• Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
• Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
• Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
• Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
• Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute

Posted Yesterday Remote Hiring Remotely in US Mid level Remote Hiring Remotely in US Mid level Design and develop backend components for enterprise payroll tax, financial, payment processing, and compliance applications. Build scalable RESTful APIs with C# and .NET, optimize Microsoft SQL Server databases, integrate financial systems with CRM platforms and state tax portals, implement secure authentication, automate high-volume processing, modernize legacy modules, and ensure auditability, reliability, and regulatory compliance. The summary above was generated by AI

OneSource Virtual (OSV) has worked exclusively with Workday customers since 2008 to deliver compliant, in-tenant technology and expert services to automate the administrative, transactional tasks of payroll, taxes, earned wage access, accounts payable, and benefits. With over 1,500 customers, 92% retention, and $225+ billion in treasury movement annually, OSV helps organizations maximize their Workday investment and operate it with confidence. Payroll, benefits, and finance solutions - all in one place., You are encouraged to learn and share ideas when you join the OneSource Virtual team. We reward innovative thinking, fresh perspectives, creative collaboration, and hard work. As an organization experiencing routine strategic growth, we are always on the lookout for intelligent, talented, and forward-thinking professionals to join our team. OSV employees enjoy a values-based culture, upward mobility, and professional development with opportunities of all kinds.