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Freelance C Programming Language Jobs (NOW HIRING)

Apple

CoreOS Kernel Performance Engineer

Cupertino, CA · On-site

Minimum Qualifications Bachelor's degree in Computer Science or equivalent professional experience Proficiency in C programming language Strong understanding of OS fundamentals Ability to collaborate ...

Synaptein Solutions inc

Firmware Engineer

Atlanta, GA · On-site

... the C programming language Strong working knowledge of Revision Control System(s) (Visual Source Safe, Subversion, Mercurial, Git, etc.) Strong working knowledge of industry accepted software ...

Synaptein Solutions inc

Firmware Engineer

Atlanta, GA · On-site

... C programming language • Strong working knowledge of Revision Control System(s) (Visual Source Safe, Subversion, Mercurial, Git, etc.) • Strong working knowledge of industry accepted software ...

CEDENT

RDK Developer

Philadelphia, PA

Proficient in C programming language. * Experience managing and updating internal releases between external vendors into the RDK codebase. * Experience with YOCTO Project/recipes. * Experience with ...

Judge Group, Inc.

Technical Engineer II

Buffalo, NY · On-site

$55 - $60/hr

C Programming Language * Dynatrace * JMeter * BlazeMeter Medical, dental, and vision insurance are available to qualified candidates who meet eligibility requirements. By providing your phone number ...

Leidos

Sensing Algorithm Engineer

San Diego, CA · On-site

$87K - $157K/yr

Devise efficient software implementations in C programming language * Conduct algorithm performance testing and analysis * Document results and brief customers and stakeholders Basic Qualifications ...

Leidos

Sensing Algorithm Engineer

San Diego, CA · On-site

$87K - $157K/yr

Devise efficient software implementations in C programming language * Conduct algorithm performance testing and analysis * Document results and brief customers and stakeholders Basic Qualifications ...

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How much do freelance c programming language jobs pay per hour?

As of Sep 12, 2026, the average hourly pay for freelance c programming language in the United States is $47.71, according to ZipRecruiter salary data. Most workers in this role earn between $24.28 and $61.78 per hour, depending on experience, location, and employer.

What is the difference between Freelance C Programming Language vs Freelance C++ Developer?

AspectFreelance C Programming LanguageFreelance C++ Developer
Required SkillsProficiency in C language, understanding of low-level programmingProficiency in C++, object-oriented programming, and advanced features
Work EnvironmentEmbedded systems, firmware, system softwareApplication development, game development, software tools
CertificationsOften not required, but knowledge of embedded systems helpfulOptional certifications like C++ certifications or related courses
Industry UsageEmbedded systems, operating systems, hardware interfacingSoftware applications, game engines, high-performance software

Freelance C Programming Language and Freelance C++ Developer roles share overlapping skills but differ mainly in scope and application. C is primarily used for low-level programming and embedded systems, while C++ offers object-oriented features suitable for complex software development. Understanding these differences helps freelancers target the right projects and clients.

Are freelance C programming language programmers still in demand?

Freelance C programming language programmers remain in demand for embedded systems, firmware development, and performance-critical applications. Skills in debugging, low-level programming, and familiarity with hardware are valuable, and demand is steady in industries like technology, automotive, and IoT. Opportunities are often found on freelance platforms and require strong technical expertise.
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Freelance C Programming Language jobs near you
Infographic showing various Freelance C Programming Language job openings in the United States as of September 2026, with employment types broken down into 1% As Needed, 74% Full Time, 19% Part Time, 1% Temporary, and 5% Contract. Highlights an 92% Physical, 1% Hybrid, and 7% Remote job distribution, with an average salary of $99,230 per year, or $47.7 per hour.

CoreOS Kernel Performance Engineer

Cupertino, CA • On-site

Apple
Computer and Electronic Product Manufacturing • 10K+ employees
Learn more about Appleexternal

Full-time

Posted 25 days ago

Apple rating

8.1

Company rating: 8.1 out of 10

Based on 684 frontline employees who took The Breakroom Quiz

Job description

The CoreOS Kernel team within Apple's CoreOS organization is looking for an exceptional OS kernel performance engineer to push the boundary of performance on Apple Silicon platforms - from iOS to macOS, visionOS and beyond. If you have a passion for low-level programming, performance optimization, and working at the intersection of software and hardware, this is your opportunity to have a major impact on end-user experience across Apple's products.
Description
As part of the CoreOS Kernel engineering team, you will work on the core layers of the operating systems. In this role you will analyze and optimize the OS performance on upcoming platforms for responsiveness and efficiency. Drive innovative kernel and runtime design optimizations that improve scheduling, memory, and power efficiency. Collaborate with hardware architects and chip design teams to drive optimizations for Apple Silicon, and influence next generation CPU, GPU and memory subsystems. Engage across many teams, from hardware engineering to compiler, application and frameworks teams, to drive world-class end-to-end system performance.
Minimum Qualifications
Bachelor's degree in Computer Science or equivalent professional experience
Proficiency in C programming language
Strong understanding of OS fundamentals
Ability to collaborate across teams to drive development and performance optimizations
Preferred Qualifications
Experience with kernel development and low-level performance analysis.
Knowledge of modern CPU and memory architectures
Expertise with profiling tools and analysis (Instruments, VTune, etc.).

What Apple employees say

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Hours and flexibility

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About Apple

Sourced by ZipRecruiter

Imagine what you could do here! At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. Bring passion and dedication to your job and there's no telling what you could accomplish. Dynamic, intelligent people and inspiring, innovative technologies are the norm here. The people who work here have reinvented entire industries with all Apple Hardware products. The same real passion for innovation that goes into our products also applies to our practices strengthening our dedication to leave the world better than we found it.

Industry

Computer and electronic product manufacturing

Company size

10,000+ Employees

Headquarters location

Cupertino, CA, US

Year founded

1976

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