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Freelance C# Winforms Developer Jobs (NOW HIRING)

Enpro Industries

Firmware Engineer

Tustin, CA · On-site

$133K - $165K/yr

... WinForms/WPF) for diagnostics, calibration, and customer tools • Build and maintain test systems ... C/C++ • Experience with ARM-based microcontrollers (including Microchip SAM7 or similar) • ...

Cesna Group

Junior Software Engineer

San Diego, CA · On-site

$50K - $100K/yr

The position primarily focuses on GUI development (C#), C++ platform integration, and business ... Preferred Qualifications * - Experience with C# and WPF/WinForms * - Experience with hardware ...

Infojini Inc

Senior Web Engineer

Columbia, SC · On-site

WEB USER INTERFACE PROGRAMMING WINFORMS VISUAL STUDIO 2010-2015 VB.NET, C++.NET, C#.NET MS INTERNET INFORMATION SYSTEMS (IIS) ARCHITECTURE AND SUPPORT. APPLICATION PROGRAMMING AGAINST RDBMS (ORACLE ...

Medtronic

Software Engineer II

Lafayette, CO · On-site

$101K - $139K/yr

... Winforms, WPF, Qt C++, Rad Studio C++) • Follow Design processes that include creating design ... • Provide engineering support to all departments within the business software systems and ...

Leidos

Software Engineer

San Diego, CA · On-site

$69K - $125K/yr

Working knowledge of C/C++ for hardware-focused or embedded applications. * Proven experience with ... Experience developing desktop GUI applications (e.g., WPF, WinForms). * Familiarity with Git-based ...

Leidos

Software Engineer

San Diego, CA · On-site

$69K - $125K/yr

Working knowledge of C/C++ for hardware-focused or embedded applications. * Proven experience with ... Experience developing desktop GUI applications (e.g., WPF, WinForms). * Familiarity with Git-based ...

Cohu

Senior Software Engineer

San Diego, CA · On-site

$125K - $165K/yr

Design, develop, test, and integrate machine control software using C++ and C# in a Visual Studio ... WinForms, or Qt); ability to build effective diagnostics and recovery workflows. * Build and ...

Cohu

Senior Software Engineer

San Diego, CA · On-site

$125K - $165K/yr

Design, develop, test, and integrate machine control software using C++ and C# in a Visual Studio ... WinForms, or Qt); ability to build effective diagnostics and recovery workflows. * Build and ...

Medtronic

Software Engineer II

Lafayette, CO · On-site

$101K - $139K/yr

... Winforms, WPF, Qt C++, Rad Studio C++) * Follow Design processes that include creating design ... Provide engineering support to all departments within the business software systems and utilities

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How much do freelance c# winforms developer jobs pay per hour?

As of Jul 22, 2026, the average hourly pay for freelance c# winforms developer in the United States is $22.97, according to ZipRecruiter salary data. Most workers in this role earn between $18.75 and $18.75 per hour, depending on experience, location, and employer.

What are some common challenges faced by freelance C# WinForms developers when working with clients remotely?

Freelance C# WinForms developers often encounter challenges such as clarifying client requirements and addressing legacy code in existing applications. Communication can be more complex when collaborating remotely, so it's important to establish clear project milestones and maintain regular updates. Additionally, ensuring compatibility across different Windows environments and handling deployment issues can require extra attention. Building strong client relationships and setting clear expectations from the start can help mitigate these challenges.

What is a Freelance C# Winforms Developer?

A Freelance C# Winforms Developer is a software professional who specializes in building desktop applications using the Windows Forms (WinForms) framework with the C# programming language. They work independently, providing their services to clients on a project-by-project basis rather than being employed by a single company. Their main responsibilities include designing, coding, testing, and maintaining Windows-based applications, often focusing on user interface design and functionality. Freelance developers typically manage their own schedules, clients, and project scopes.

What is the difference between Freelance C# Winforms Developer vs Freelance WPF Developer?

AspectFreelance C# Winforms DeveloperFreelance WPF Developer
Required SkillsProficiency in C#, Winforms, UI designProficiency in C#, WPF, XAML, UI/UX design
Work EnvironmentDesktop application development for WindowsDesktop application development with advanced UI features
Industry UsageBusiness tools, legacy systemsModern desktop apps, rich interfaces
CertificationsNone specific, general C#/.NET knowledgeSame as Winforms, plus XAML expertise

While both roles involve C# development for desktop applications, Winforms developers focus on traditional Windows Forms interfaces, often for legacy or business systems. WPF developers work on modern, visually rich applications using XAML. The choice depends on project requirements and UI complexity.

What are the key skills and qualifications needed to thrive as a Freelance C# WinForms Developer, and why are they important?

To excel as a Freelance C# WinForms Developer, you need strong proficiency in C#, .NET Framework, and experience designing and maintaining Windows Forms applications, typically backed by a degree in computer science or equivalent experience. Familiarity with Visual Studio, version control systems like Git, and knowledge of databases such as SQL Server are commonly required technical tools. Excellent problem-solving skills, self-motivation, and effective communication are crucial soft skills for managing client expectations and delivering quality solutions independently. These competencies are essential to create efficient, user-friendly applications and maintain successful client relationships in a competitive freelance environment.
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What cities are hiring for Freelance C# Winforms Developer jobs? Cities with the most Freelance C# Winforms Developer job openings:
What are the most commonly searched types of C# Winforms Developer jobs? The most popular types of C# Winforms Developer jobs are:
What job categories do people searching Freelance C# Winforms Developer jobs look for? The top searched job categories for Freelance C# Winforms Developer jobs are:
Freelance C Winforms Developer jobs near you
Infographic showing various Freelance C# Winforms Developer job openings in the United States as of July 2026, with employment types broken down into 66% Full Time, 6% Part Time, and 28% Contract. Highlights an 78% In-person, and 22% Remote job distribution, with an average salary of $47,772 per year, or $23 per hour.
Firmware Engineer

Firmware Engineer

Enpro Industries

Tustin, CA • On-site

$133K - $165K/yr

Full-time

Posted yesterday

Job description

Title: Firmware Engineer
Position Type: Full-Time/Regular
Division: AMI
Department: Quality
Location: Tustin, CA
Salary: $133K-$165K
Job Summary & Job Duties
The Firmware Engineer will build embedded systems that interface directly with hardware. This role is primarily firmware-focused (low-level, real-time, device-facing), with some supporting PC software work for diagnostic and customer-facing tools. You will be close to the hardware: bringing up new boards, writing drivers, debugging with JTAG and oscilloscopes, and building robust firmware that ships in production and performs reliably in real field environments.
What You'll Do:
• Design, implement, and maintain embedded firmware for ARM-based microcontrollers
• Own features and systems from concept through production release
• Develop device drivers and low-level hardware interfaces
• Build robust firmware architectures (state machines, fault handling, watchdogs, diagnostics, recovery)
• Work in RTOS-based systems with real-time constraints (timing, determinism, DMA, interrupts)
• Support hardware bring-up, including schematic-driven debugging and early prototype validation
• Interface with peripherals including ADCs, DACs, sensors, and communication interfaces
• Debug firmware and hardware issues using JTAG/SWD, oscilloscopes, and logic analyzers
• Develop Windows desktop applications (WinForms/WPF) for diagnostics, calibration, and customer tools
• Build and maintain test systems (unit, integration, regression, hardware-in-the-loop)
• Support production release, including field issue investigation and root cause analysis
• Contribute to CI/CD pipelines, automated builds, and release processes
Minimum Qualifications
• 7-15 years of embedded firmware experience in hardware-based products
• Strong proficiency in C/C++
• Experience with ARM-based microcontrollers (including Microchip SAM7 or similar)
• Proven experience writing device drivers and working directly with hardware
• RTOS experience (task scheduling, synchronization, interrupts, timing)
• Strong firmware design skills (state machines, error handling, diagnostics, recovery strategies)
• Demonstrated ability to work independently from concept through production-ready implementation
• Hands-on debugging using JTAG/SWD, oscilloscope, and logic analyzer
• Experience with communication protocols: I2C, SPI, USB, UART, RS-232, RS-485
• Experience with DMA and real-time data handling
• Experience using Git or similar version control systems
• Experience developing Windows desktop applications (C#, WinForms or WPF)
• Ability to read schematics and understand electronics fundamentals (ADC, DAC, amplifiers, sensors)
• Experience supporting products in a production environment (ISO 9001 or similar)
Preferred Qualifications:
• Experience with embedded displays or UI frameworks (e.g., LVGL)
• Networking experience (TCP/IP, embedded connectivity)
• Experience with data logging, databases, or diagnostics tools
• Firmware update mechanisms (bootloaders, field upgrades, recovery strategies)
• Experience with sensor-based or measurement systems and calibration methods
• Experience designing for reliability in production and field environments
• Experience building automated test systems or hardware-in-the-loop setups
• Experience with CI/CD systems and build server setup/maintenance
What We're Looking For
• Hands-on, execution-focused engineer who enjoys building, testing, and debugging real systems
• Strong ownership mindset - able to take products from bring-up through production and field support
• Detail-oriented with a focus on reliability, maintainability, and diagnostics
• Comfortable working cross-functionally with electrical, mechanical, and systems teams
AMI is a subsidiary of Enpro, a leading industrial technology company focused on critical applications across many end-markets, including semiconductor, industrial process, commercial vehicle, sustainable power generation, aerospace, food and pharma, photonics and life sciences.
At Enpro, we believe that diversity drives innovation and inclusion fosters growth. We are committed to creating a workplace where everyone feels valued and respected. Our employment decisions are based on merit, qualifications, and business needs, without regard to race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, marital status, military service, or any other status protected by applicable law. If you require accommodation due to a disability at any time during the recruitment and/or assessment process, please contact Human Resources, and we will make all reasonable efforts to accommodate your request.

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