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

Experis (Austria); United States; Remote; CAD 110,000 - 150,000; Full time

Job summary

Experis is seeking a Senior .NET API / Back-End Developer to support a high-profile engagement in a largely remote setting. The role focuses on enterprise-scale backend services, APIs, batch processing, and reconciliation within a complex environment.

Expect collaboration with stakeholders to refine requirements and resolve production issues. The contract is initially 3 months with a strong likelihood of long-term renewal.

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.

Responsibilities

• 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

Skills

C# / .NET

REST APIs

Backend services

Batch processing

SQL databases

Distributed systems

Troubleshooting

Communication

Job description

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

Contract Length: 3-month contract with a strong likelihood of long-term renewal

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

• SQL Server or similar relational databases
• Backend Service Development

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