C Software Engineer Jobs in USA with Visa Sponsorship
C software engineers are strong candidates for H-1B visa and O-1 visa sponsorship. Roles in systems programming, embedded software, and low-level infrastructure consistently qualify as specialty occupations, and employers across defense, automotive, and cloud infrastructure regularly sponsor experienced C engineers. For detailed occupation requirements, see the O*NET profile.
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Get Access To All JobsINTRODUCTION
FreeWheel, a Comcast company, provides comprehensive ad platforms for publishers, advertisers, and media buyers. Powered by premium video content, robust data, and advanced technology, we’re making it easier for buyers and sellers to transact across all screens, data types, and sales channels. As a global company, we have offices in nine countries and can insert advertisements around the world.
JOB SUMMARY
The Sr. Software Engineer is responsible for developing software solutions for the Ad Serving team at FreeWheel. The Ad Serving system is the backbone of FreeWheel's demand side platform (DSP) advertising business. It listens to billions of ad auctions per day, decides which of our hundreds of customers should participate, and executes complex bidding strategies to provide optimal results - in milliseconds. The Sr. Software Engineer is expected to:
- Design, own, and deliver high-quality software
- Function effectively as a member of a team
- Mentor junior engineers
- Interact with management and other members of the development group
- Continually seek to improve themselves and the company
ESSENTIAL FUNCTIONS:
The Sr Software Engineer must be able to:
- Be effective members of their team, department and company
- Demonstrate good analytical abilities, attention to detail, and strong verbal / written communication skills in English
- Work on multiple projects simultaneously when asked
- Work with a range of technologies, programming languages, and applications
- Write quality software within reasonable timeframes based on the designs and specifications provided
PREFERRED JOB KNOWLEDGE, SKILLS AND ABILITIES:
- 4+ years of professional experience with compiled languages (C++ preferred), databases, and network programming.
- Solid understanding of object-oriented programming concepts
- Proficient understanding of code versioning tools such as Git
- Ability to adapt quickly to an existing, complex environment
- Excellent debugging and troubleshooting abilities
- Excellent communication skills
- Go Lang experience is a plus
- Ad Tech experience is a plus
CORE RESPONSIBILITIES:
- Provide technical leadership in designing, developing, maintaining, troubleshooting, and owning servers and cloud-based systems
- Write, maintain, and deploy cloud-based software and distributed computational systems using the Linux operating system
- Develop software and software architecture using C++
- Plan and execute the development, testing, and deployment of new software features and improvements to cloud-based software infrastructure; work with scalable design patterns
- Use data warehouses including Snowflake, and distributed databases, including Aerospike
- Analyze and optimize algorithm performance; document all development activity
- Research, write, and edit documentation and technical requirements, including software designs, evaluation plans, test results, technical manuals, and formal recommendations and reports
- Monitor and evaluate competitive applications and products; review literature, patents, and current practices relevant to the solution of assigned projects
- Collaborate with project stakeholders to identify product and technical requirements; conduct analysis to determine integration needs
- Work with the Quality Assurance team to determine if applications fit specification and technical requirements
- Review code
- Disseminate software best practices
- Consistent exercise of independent judgment and discretion in matters of significance
- Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) and overtime as necessary
- Other duties and responsibilities as assigned
EMPLOYEES AT ALL LEVELS ARE EXPECTED TO:
- Understand our Operating Principles; make them the guidelines for how you do your job
- Own the customer experience think and act in ways that put our customers first, give them seamless digital options at every touchpoint, and make them promoters of our products and services
- Know your stuff be enthusiastic learners, users and advocates of our game-changing technology, products and services, especially our digital tools and experiences
- Win as a team make big things happen by working together and being open to new ideas
- Be an active part of the Net Promoter System a way of working that brings more employee and customer feedback into the company by joining huddles, making call backs and helping us elevate opportunities to do better for our customers
- Drive results and growth
- Support a culture of inclusion in how you work and lead
- Do what's right for each other, our customers, investors and our communities
DISCLAIMER: This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.
Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.
SKILLS:
Software Engineering; Communication; Systems Design
Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That’s why we provide an array of options, expert guidance and always-on tools, that are personalized to meet the needs of your reality - to help support you physically, financially and emotionally through the big milestones and in your everyday life. Please visit the compensation and benefits summary on our careers site for more details.
Education
Bachelor's Degree
While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.
RELEVANT WORK EXPERIENCE
7-10 Years
INTRODUCTION
FreeWheel, a Comcast company, provides comprehensive ad platforms for publishers, advertisers, and media buyers. Powered by premium video content, robust data, and advanced technology, we’re making it easier for buyers and sellers to transact across all screens, data types, and sales channels. As a global company, we have offices in nine countries and can insert advertisements around the world.
JOB SUMMARY
The Sr. Software Engineer is responsible for developing software solutions for the Ad Serving team at FreeWheel. The Ad Serving system is the backbone of FreeWheel's demand side platform (DSP) advertising business. It listens to billions of ad auctions per day, decides which of our hundreds of customers should participate, and executes complex bidding strategies to provide optimal results - in milliseconds. The Sr. Software Engineer is expected to:
- Design, own, and deliver high-quality software
- Function effectively as a member of a team
- Mentor junior engineers
- Interact with management and other members of the development group
- Continually seek to improve themselves and the company
ESSENTIAL FUNCTIONS:
The Sr Software Engineer must be able to:
- Be effective members of their team, department and company
- Demonstrate good analytical abilities, attention to detail, and strong verbal / written communication skills in English
- Work on multiple projects simultaneously when asked
- Work with a range of technologies, programming languages, and applications
- Write quality software within reasonable timeframes based on the designs and specifications provided
PREFERRED JOB KNOWLEDGE, SKILLS AND ABILITIES:
- 4+ years of professional experience with compiled languages (C++ preferred), databases, and network programming.
- Solid understanding of object-oriented programming concepts
- Proficient understanding of code versioning tools such as Git
- Ability to adapt quickly to an existing, complex environment
- Excellent debugging and troubleshooting abilities
- Excellent communication skills
- Go Lang experience is a plus
- Ad Tech experience is a plus
CORE RESPONSIBILITIES:
- Provide technical leadership in designing, developing, maintaining, troubleshooting, and owning servers and cloud-based systems
- Write, maintain, and deploy cloud-based software and distributed computational systems using the Linux operating system
- Develop software and software architecture using C++
- Plan and execute the development, testing, and deployment of new software features and improvements to cloud-based software infrastructure; work with scalable design patterns
- Use data warehouses including Snowflake, and distributed databases, including Aerospike
- Analyze and optimize algorithm performance; document all development activity
- Research, write, and edit documentation and technical requirements, including software designs, evaluation plans, test results, technical manuals, and formal recommendations and reports
- Monitor and evaluate competitive applications and products; review literature, patents, and current practices relevant to the solution of assigned projects
- Collaborate with project stakeholders to identify product and technical requirements; conduct analysis to determine integration needs
- Work with the Quality Assurance team to determine if applications fit specification and technical requirements
- Review code
- Disseminate software best practices
- Consistent exercise of independent judgment and discretion in matters of significance
- Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) and overtime as necessary
- Other duties and responsibilities as assigned
EMPLOYEES AT ALL LEVELS ARE EXPECTED TO:
- Understand our Operating Principles; make them the guidelines for how you do your job
- Own the customer experience think and act in ways that put our customers first, give them seamless digital options at every touchpoint, and make them promoters of our products and services
- Know your stuff be enthusiastic learners, users and advocates of our game-changing technology, products and services, especially our digital tools and experiences
- Win as a team make big things happen by working together and being open to new ideas
- Be an active part of the Net Promoter System a way of working that brings more employee and customer feedback into the company by joining huddles, making call backs and helping us elevate opportunities to do better for our customers
- Drive results and growth
- Support a culture of inclusion in how you work and lead
- Do what's right for each other, our customers, investors and our communities
DISCLAIMER: This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.
Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.
SKILLS:
Software Engineering; Communication; Systems Design
Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That’s why we provide an array of options, expert guidance and always-on tools, that are personalized to meet the needs of your reality - to help support you physically, financially and emotionally through the big milestones and in your everyday life. Please visit the compensation and benefits summary on our careers site for more details.
Education
Bachelor's Degree
While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.
RELEVANT WORK EXPERIENCE
7-10 Years
See all 345+ C Software Engineer Jobs
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Get Access To All JobsTips for Finding Visa Sponsorship as a C Software Engineer
Emphasize systems-level depth in your resume
Sponsors reviewing C engineers want to see low-level expertise: memory management, pointer arithmetic, kernel interaction, or hardware interfacing. Generic software experience won't stand out. Lead with the systems domain and the specific environments you've worked in.
Target industries with consistent H-1B approval rates
Defense contractors, semiconductor firms, automotive OEMs, and cloud infrastructure companies sponsor C engineers regularly. These industries have well-established H-1B workflows and legal teams experienced with specialty occupation petitions for systems-level roles.
Make your degree-to-role connection explicit
H-1B approval for C engineering roles depends partly on matching your degree field to the position. Computer science, computer engineering, or electrical engineering degrees map cleanly. If your degree is in a tangential field, document how your coursework directly applies.
Highlight domain-specific certifications and projects
RTOS experience, MISRA-C compliance, or contributions to open-source systems projects signal specialized knowledge. These details strengthen the specialty occupation argument in an H-1B petition by demonstrating the role requires more than a generalist engineering background.
Prepare for technical interviews that go deep on C fundamentals
Sponsoring employers for C roles often test more rigorously than web-stack interviews. Expect questions on undefined behavior, compiler behavior, cache effects, and concurrency primitives. Demonstrating this depth also reinforces the specialty occupation case for your visa petition.
Browse sponsorship-confirmed listings before cold applying
Not every job listing specifies whether the employer sponsors visas. Using Migrate Mate filters your search to verified sponsoring employers, so you spend time on applications where sponsorship is already on the table rather than finding out late in the process.
Frequently Asked Questions
Does a C software engineer role qualify as a specialty occupation for H-1B purposes?
Yes, in most cases. USCIS looks for roles that require at minimum a bachelor's degree in a specific field. C software engineering positions tied to embedded systems, operating systems, or low-level infrastructure consistently meet this standard. Generic software roles with no specific degree requirement are more vulnerable to challenge, so the job description matters.
Do I need a computer science degree specifically, or will other engineering degrees work?
Computer science, computer engineering, and electrical engineering degrees all map well to C software engineering roles. USCIS evaluates whether the degree field is directly related to the position, not whether it matches the exact job title. A degree in mathematics or physics can work if your coursework covered relevant systems or programming topics, but expect closer scrutiny.
Which types of employers most commonly sponsor C engineers on H-1B visas?
Defense contractors, semiconductor companies, automotive suppliers working on embedded systems, and cloud infrastructure teams are the most active sponsors for C engineers. These employers file H-1B visa petitions routinely and have legal infrastructure to support the process. You can browse verified sponsoring employers in these sectors directly on Migrate Mate.
How does an O-1A visa compare to H-1B for an experienced C software engineer?
The O-1A is worth considering if you have a strong track record: published research, significant open-source contributions, patents, or recognition from peers in systems programming. It has no lottery and no annual cap, unlike the H-1B. The evidence bar is higher, but for engineers with a documented record of impact, it can be a more reliable path.
Can I transfer my H-1B to a new employer if I change C engineering jobs?
Yes. H-1B portability allows you to start working for a new employer once they file a transfer petition, without waiting for approval, as long as your prior H-1B was approved and you've maintained valid status. The new employer must file their own petition describing the C engineering role, and the specialty occupation requirement applies again to the new position.
What is the prevailing wage requirement for sponsored C Software Engineer jobs?
U.S. employers sponsoring a visa must pay at least the prevailing wage, which is what workers in the same role, area, and experience level typically earn. The Department of Labor sets this rate to make sure companies aren't hiring foreign workers simply because they'd accept lower pay than a U.S. worker. It varies by job title, location, and experience. You can look up current prevailing wage rates for any occupation and location using the OFLC Wage Search page.