C#​/.NET Developer – Legacy System Modernization; GovTech

C#/.NET Developer – Legacy System Modernization (Gov Tech)

Get AI-powered advice on this job and more exclusive features.

We are looking for a C#/.NET Developer – Legacy System Modernization (Gov Tech) to support our client based in Miami, FL.
US BASED CANDIDATES ONLY. This is an onsite position. Candidates must be located or willing to locate to South Florida / Miami. No third parties and no sponsorship.

Founded in 2009 and headquartered in beautiful Miami, FL, TECKpert is a tech consulting and staff augmentation firm. At TECKpert, we offer a contingent workforce built for any size digital transformation project. Experts in design, development, IT, analytics and marketing provide innovative digital solutions to achieve success in our new economy. Our leaders identify the technical talent best suited to bolster our client’s capabilities across all industries, including healthcare, government, finance, legal, real estate, and startups.

We are hiring three C#/.NET Developers (1 Senior, 2 Mid-level) to support a mission‑critical modernization effort for a government agency in South Florida. These on‑site roles will play a key part in transitioning legacy systems to a new platform.

The project involves ensuring data integrity during migration, integrating impervious surface reviews into permitting workflows, and implementing automated workload assignment to optimize permitting and drainage operations. Successful candidates will demonstrate expertise across application development, system integration, process automation, and regulatory compliance within a large‑scale government environment.

• Modernize and migrate legacy systems into Gold Key
• Ensure compliance with impervious surface, environmental, and historical review regulations
• Embed impervious surface workflows into permitting systems
• Implement workload automation features to improve operational efficiency
• Build and integrate Windows/web applications using C#, .NET, and REST/SOAP services
• Develop SQL queries, stored procedures, and database structures in Oracle
• Implement MVC architecture for robust, secure software solutions
• Create SSIS packages and SSRS reports for ETL and data visualization tasks
• Collaborate with analysts, engineers, and county vendors to deliver scalable applications
• Support ECM integration, online submissions, payment systems, and invoicing features

This opportunity is for a full‑time, contract position with possible extensions and pay commensurate with experience up to $150,000 per year. Medical, dental, vision, and life insurance available after 30 days of hire.

• Bachelor’s degree or master’s degree in Computer Science, Engineering, Information Systems, or related field
• 5+ years of experience with C#, .NET Framework, MVC
• Proficiency in JavaScript and jQuery
• Strong expertise in Oracle PL/SQL and query optimization
• Experience with Windows applications, web services, authentication mechanisms
• Prior success implementing SSIS/SSRS solutions
• Experience with large system modernization and application integrations
• Background working in government environments preferred
• Excellent written and verbal communication skills

Working with TECKpert means more options. As new opportunities arise, you tell us what you think is a good fit for you. What industries interest you most? Do you prefer an on‑location, 9‑5? Or would you want a flexible schedule and remote work? We proudly offer a wide variety of roles. Many of our TECKperts enjoy coworking and skills training coupled with the stability of full‑time employment.

We believe TECKpert gives today's digital professionals an agile path to start and advance their career. All of our opportunities require at least 20 hours per week and can be one to twelve months in length. Choose the opportunity that matches your interest and desired cadence.

Thank you for applying. If you are selected, we will reach out for a skills assessment and to schedule a short prescreen video call to get to know you better. We will also be in touch for any future roles your profile will match with.

TECKpert provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

Mid‑Senior level

Full-time

Engineering and Information Technology

Internet Publishing

Referrals increase your chances of interviewing at TECKpert by 2x.

Apply BELOW