【Annual Salary 8.14 Million Yen】C Language Engineer Projects May 2026 Latest | Freelance Survey【Freelance Board Research】

We are pleased to announce the latest "C Language Engineer Project Survey Report" for freelancers in May 2026. This report was created from 6,698 actual freelance projects listed on Freelance Board.

Survey Summary ・Average annual salary for C language projects: 8.14 million yen ・Remote projects: 64.3% ・Share of C language projects: 1.32% of the total

Table of Contents C Language Project Average Annual Salary Ranking: 18th (8.14 million yen) C Language Project Count Ranking: 14th (Project ratio 1.32%) Remote Work Ratio for C Language Projects Industries with Many C Language Projects Job Types for C Language Projects Characteristics of C Language What Can Be Created with C Language Market Value of C Language Skills Survey Target Estimated annual income is calculated from the average monthly unit price of C language job postings on Freelance Board (https://freelance-board.com/jobs/skills-15). ・Target Period February 1, 2024 - May 11, 2026 ・Number of Target Cases: 6,698 cases *Request when citing this data If you publish the source when citing this data in media, please add the following: Source: Freelance Board (https://freelance-board.com/jobs/skills-15)

C Language Project Average Annual Salary Ranking: 18th (8.14 million yen) The average monthly unit price for C language projects is 678,000 yen, and the average annual salary is 8.14 million yen, placing it 18th in the annual salary ranking by programming language. C language is a highly versatile programming language, characterized by its frequent use in areas close to hardware, such as OS and embedded software. It is adopted in development where processing performance and memory control are emphasized. Its main application areas include embedded development, control systems, OS development, communication devices, and industrial equipment. Although its ranking is in the middle, it is a language persistently used in low-level domains, and a certain level of demand is expected in projects where stability and long-term operation are valued.

C Language Project Count Ranking: 14th (Project ratio 1.32%) As of May 2026, C language projects account for 1.32% of the total market, ranking 14th in project count, with an average monthly unit price of 631,000 yen. C language is a highly versatile programming language, characterized by its ability to efficiently handle processes close to hardware, such as OS and embedded software. It is well-suited for development where processing performance and portability are emphasized, and is utilized in embedded development, control systems, and communication devices. In recent years, there has been a certain demand in development sites for existing system maintenance, industrial equipment, and IoT devices. By combining practical experience in C language with peripheral skills such as memory management, Linux, embedded environments, and communication control, it leads to securing highly specialized projects.

Remote Work Ratio for C Language Projects (Reference: https://freelance-board.com/jobs/skills-15) As of May 2026, the remote work ratio for C language freelance projects and job offers is 9.5% for full remote, 54.8% for partial remote, and 35.7% for on-site. Combining full remote and partial remote, the ratio reaches 64.3%, indicating that working styles incorporating remote work account for the majority. Compared to the previous month, full remote increased by 0.1%, while partial remote decreased by 1.1%, and on-site increased by 1.0%. Since C language is often used in embedded development and device control, there are a certain number of projects that require actual device verification and on-site support. Compared to the same month last year, full remote decreased by 4.1%, while partial remote increased by 17.5%, and on-site decreased by 13.4%. It is believed that C language projects are shifting from completely remote work to working styles that include partial office attendance.