> Markdown version of [/jobs/ext/4286258-it-senior-software-developer](https://www.wearedevelopers.com/jobs/ext/4286258-it-senior-software-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IT Senior Software Developer - **Company:** FOUR B'S, LLLP - **Location:** Olympia Heights, FL, United States - **Experience:** Expert - **Salary:** $115,000.0 - $150,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Microsoft Access, JavaScript (Programming Language), .NET Framework, Microsoft Windows, Ajax (Programming Language), Applicant Tracking Systems, Big Data, C Sharp (Programming Language), Databases, Data Integrity, Extract Transform Load (ETL), Data Transformation, Data Mining, Database Storage Structures, Document Object Model, Enterprise Content Management, JQuery, Mainframes, Model View Controller (MVC), Routing, Object-Oriented Software Development, Oracle Databases, Oracle SQL Developer, Performance Tuning, Query Optimization, Software Systems, SQL Stored Procedures, PL-SQL, SQL Databases, SQL Server Reporting Services, SQL Server Integration Services, Systems Integration, Software Security, SOAPAPI, Asynchronous Programming, Restful APIs, Legacy Systems - **Published:** October 18, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=bbb104371eeaa2e1 ## About the Role * Strong proficiency in C#, object-oriented programming, and the .NET framework. * Strong knowledge of JavaScript, jQuery, DOM manipulation, asynchronous programming, and AJAX. * Expertise in Oracle databases, SQL, PL/SQL, stored procedures, query optimization, and database normalization. * Experience with MVC architecture, routing, and application security. * Experience developing Windows applications and integrating RESTful and SOAP web services. * Strong understanding of SSIS, ETL processes, data transformations, and performance tuning. * Experience designing, deploying, and integrating SSRS reports. * Practical experience modernizing large-scale systems, migrating legacy data, and integrating multiple applications. * Ability to develop automated workflows and customer-facing applications. * Strong troubleshooting skills and attention to detail. * Clear written and verbal communication skills and the ability to work with cross-functional teams. Preferred Experience * Previous work with government agencies or organizations managing large-scale data migrations and system integrations. * Experience supporting county or municipal permitting and review processes. * Experience with GoldKey or migration projects involving PEN, Microsoft Access, and mainframe systems. ## Description We are seeking a dynamic and experienced IT Senior Software Developer to lead the design, development, and implementation of innovative software solutions. The developer will help transition legacy systems, maintain data accuracy throughout the migration, and develop integrations and automated workflows. The project supports county permitting and review processes, including Building Permits, Paving and Drainage, Impervious Surface Reviews, and Sewer Extension Permits., * Migrate legacy systems and data from PEN, Microsoft Access, and mainframe applications into GoldKey, ensuring data integrity and validation throughout the process. * Develop, maintain, and troubleshoot applications using C#, .NET, and MVC architecture. * Build interactive web functionality using JavaScript, jQuery, AJAX, and asynchronous programming. * Write and optimize Oracle SQL and PL/SQL queries, stored procedures, and database structures. * Develop secure integrations using RESTful and SOAP APIs and appropriate authentication methods. * Create and maintain SSIS packages for data extraction, transformation, and loading, including performance tuning. * Design, deploy, and integrate SSRS reports. * Enhance permitting workflows and implement automated workload assignments. * Develop customer-facing features for online submissions, application tracking, invoicing, and payments. * Integrate applications with enterprise content management (ECM) systems. * Support workflows addressing impervious surface reviews, environmental and historical preservation requirements, and municipal Sewer Extension Permits. * Collaborate with county analysts, vendors, and other project stakeholders to clarify requirements and resolve technical issues. * Write clean, maintainable code and apply security best practices.