Senior .NET API / Back-End Developer within payments, financial services, or banking environments

Job summary

Design, develop, and maintain scalable .NET backend applications, REST APIs, business logic, batch workflows, reconciliation processes, and enterprise integrations. Collaborate with stakeholders, resolve production issues, participate in code reviews, and support modernization while meeting performance, scalability, and security requirements.

Job details

Senior .NET API / Back-End Developer within payments, financial services, or banking environments Contract Length: 3-month contract with a strong likelihood of long-term renewal Work Location: Canada (Remote) Work Time Zone: Pacific Time (PT) Minimum travel is expected once 1 - 2 days every 1-2 months and is client funded. We are seeking a Senior .NET API / Back-End Developer to support a high-profile engagement. This opportunity supports an approved project with strong potential for long-term extension and future growth. The successful candidate will be responsible for developing and maintaining enterprise-scale backend services, APIs, business rules, batch processing solutions, and reconciliation functionality within a complex and highly integrated environment. WHAT YOU'LL DO • Design, develop, and maintain scalable .NET backend applications and APIs • Build and support RESTful services and enterprise integrations • Develop and maintain business rules and application logic • Design and optimize batch processing jobs and workflows • Create and support reconciliation processes to ensure data accuracy and integrity • Collaborate with business and technical stakeholders to gather and refine requirements • Troubleshoot, analyze, and resolve production issues • Participate in code reviews and contribute to development best practices • Support application modernization and continuous improvement initiatives • Ensure solutions meet performance, scalability, and security requirements REQUIRED QUALIFICATIONS • 7+ years of experience developing applications using C# and .NET technologies • Strong experience designing and developing REST APIs • Experience building scalable back-end services and distributed systems • Experience with batch processing, data synchronization, and reconciliation solutions • Strong SQL and database experience • Experience working within enterprise-level environments • Strong analytical, troubleshooting, and problem-solving skills • Excellent communication and stakeholder engagement skills • Ability to work independently in a remote environment TECHNICAL REQUIREMENTS • C# • .NET / .NET Core • REST APIs • Microservices Architecture • SQL Server or similar relational databases • Backend Service Development • Batch Processing • Data Reconciliation • Enterprise Application Integrations • Git / Source Control • CI/CD Practices NICE TO HAVE • Experience within payments, financial services, or banking environments • Experience supporting credit card or similar payment processing platforms • Cloud experience (Azure preferred) • Experience with containerization technologies • Experience working within Agile delivery teams

What you’ll do

Design, develop, and maintain scalable .NET backend applications, REST APIs, business logic, batch workflows, reconciliation processes, and enterprise integrations. Collaborate with stakeholders, resolve production issues, participate in code reviews, and support modernization while meeting performance, scalability, and security requirements.

Requirements

Requires 7+ years of C# and .NET development experience, strong REST API and backend service expertise, and experience with distributed systems, batch processing, reconciliation, SQL, and enterprise environments. Candidates should also demonstrate strong troubleshooting, communication, stakeholder engagement, and independent remote-work skills.

Listed skills

• C++ · Preferred
• .NET · Preferred
• REST APIs · Preferred
• SQL · Preferred
• Git · Preferred
• CI/CD · Preferred
• Microsoft Azure · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• C#
• .NET
• .NET Core
• REST APIs
• Microservices Architecture
• SQL
• SQL Server
• Backend Service Development
• Distributed Systems
• Batch Processing
• Data Reconciliation
• Enterprise Integrations
• Git
• CI/CD
• Azure
• Containerization

Job areas

• Software
• Technology
• Finance & Accounting

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