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at Insight Global, LLC in Lincolnshire, Illinois, United States Job Description Job Description We're building a modern, scalable payments platform to support transactions across POS , e-commerce, mobile, kiosk, and call center channels. We're looking for a strong C# / . NET backend engineer to design, build, and maintain reliable services and APIs. You'll work with Product, Architecture, and other engineers to ship secure, production-ready systems. Payments experience is highly desired, but not required. Strong . NET engineers with API integrations and high-volume transactional systems are encouraged to apply. Key Responsibilities Design, build, and maintain backend services and APIs using C# and .

NET / . NET

Core Integrate with third-party systems, external APIs, and internal platforms Build reliable workflows including retries, error handling, and failover Support high-volume transactional systems across multiple channels Monitor production systems and troubleshoot issues Improve performance, scalability, and reliability Participate in incident response and root cause analysis Partner with Product and Architecture to deliver technical solutions Participate in sprint planning, code reviews, and Agile delivery Write clean, maintainable, well-tested code pay rate: $45-75/hour depending on experience We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to HR@insightglobal.com.

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https://insightglobal.com/workforce-privacy-policy/. Skills and Requirements 5-10 years of software engineering experience Strong proficiency in C# and .

NET / . NET

Core Experience building and consuming RESTful APIs Hands-on experience integrating with third-party systems or APIs Experience with relational databases ( SQL Server, PostgreSQL, or similar) Understanding of secure coding practices Strong problem-solving and production debugging skills Strong communication and collaboration skills Experience with payment systems, payment gateways, processors, or POS platforms Familiarity with tokenization, 3DS, EMV , or

PCI - DSS

Experience with digital wallets or alternative payment methods Background in fintech, retail, e-commerce, or other high-volume transactional systems Experience with messaging platforms (Kafka, RabbitMQ, Azure Service Bus) Cloud experience (Azure, AWS , or GCP ) Agile / Scrum experience (Jira, Azure DevOps, etc.) To view full details and how to apply, please login or create a Job Seeker account