Integres is currently seeking an experienced .NET Core/.NET 8 Developer for a hybrid opportunity based in Baltimore, MD. This role involves developing a high-reliability .NET console application that integrates with the EPA RCRAInfo REST APIs to securely extract, transform, and synchronize environmental compliance data with an internal ETS system. Key Responsibilities • Develop .NET Core/.NET 8 console applications using C# • Build secure REST API integrations using HttpClient or RestSharp • Implement OAuth2 token-based authentication and token lifecycle management • Parse and transform complex JSON/XML data into business objects • Perform SQL Server/Oracle data inserts, updates, and upserts • Implement robust logging (Serilog/NLog), retry policies (Polly), and error handling • Support scheduled task execution with monitoring and automated notifications Qualifications • 3-5+ years of experience with C#, .NET Core/.NET 6/.NET 8 • Strong experience consuming REST APIs and asynchronous programming (async/await) • Expertise with JSON serialization (System.Text.Json or Newtonsoft.Json) • Strong SQL Server or Oracle experience • Experience with Entity Framework Core or Dapper • Proficiency with Git, CI/CD pipelines, and Postman Preferred Qualifications • Experience with EPA CDX/RCRAInfo or other federal agency APIs • Hands-on experience with Polly and Serilog • Experience deploying .NET applications using Docker, Azure WebJobs, or Windows Task Scheduler • Strong analytical, troubleshooting, and clean coding practices. Location: Baltimore, MD (Hybrid) Work Schedule: • Tuesday, Wednesday, Thursday - Onsite • Monday, Friday - Remote Additional Information Integres offers competitive salaries bolstered by a comprehensive benefits package, which provides safety and security for our employees and their families. Our generous benefits package includes • Healthcare and Insurance: medical, dental, vision, short- and long-term disability protection, basic life and AD&D insurance • 401(k) Savings Plan • Accrued Paid Time Off (PTO) • Employee Recognition and Rewards • Employee Referral Bonuses