1

Freelance Embedded Software Engineer Jobs in Missouri

Software Engineer-Embedded 4

Hazelwood, MO · On-site

$121K - $159K/yr

Our client is currently seeking a Software Engineer-Embedded 4, Hazelwood, MO (Onsite) Required Qualifications: - Bachelor of Science degree from an accredited course of study, in Computer ...

Software Engineer (Experienced, Senior)

Hazelwood, MO · On-site

$115K - $152K/yr

Software Engineer (Experienced, Senior) Company: The Boeing Company The Boeing Company is looking ... If you enjoy solving hard realtime embedded problems, working with multidiscipline teams, and ...

Software Engineer (Experienced, Senior)

Hazelwood, MO · On-site

$115K - $152K/yr

Software Engineer (Experienced, Senior) Company: The Boeing Company The Boeing Company is looking ... If you enjoy solving hard realtime embedded problems, working with multidiscipline teams, and ...

Software Engineer (Experienced, Senior)

Hazelwood, MO · On-site

$115K - $152K/yr

Software Engineer (Experienced, Senior) Company: The Boeing Company The Boeing Company is looking ... If you enjoy solving hard realtime embedded problems, working with multidiscipline teams, and ...

Software Engineer (Experienced, Senior)

Hazelwood, MO · On-site

$115K - $152K/yr

Software Engineer (Experienced, Senior) Company: The Boeing Company The Boeing Company is looking ... If you enjoy solving hard real-time embedded problems, working with multi-discipline teams, and ...

The successful candidate for the role of Software Engineer will play a crucial role in the design, development, testing, and maintenance of non-embedded software throughout the end-to-end lifecycle ...

Software Engineer

Hazelwood, MO · On-site

$105K - $147K/yr

The successful candidate for the role of Software Engineer will play a crucial role in the design, development, testing, and maintenance of non-embedded software throughout the end-to-end lifecycle ...

Software Engineer

Hazelwood, MO · On-site

$105K - $147K/yr

The successful candidate for the role of Software Engineer will play a crucial role in the design, development, testing, and maintenance of non-embedded software throughout the end-to-end lifecycle ...

Showing results 41-60

Freelance Embedded Software Engineer information

What are the key skills and qualifications needed to thrive as a freelance embedded software engineer, and why are they important?

To thrive as a Freelance Embedded Software Engineer, you need a strong background in computer science or electrical engineering, proficiency in embedded C/C++, and experience with microcontrollers or real-time operating systems. Familiarity with development tools such as Keil, IAR, or Eclipse, version control systems like Git, and relevant certifications (e.g., ARM Accredited Engineer) are highly valued. Excellent problem-solving skills, self-motivation, and strong communication are crucial for managing diverse client projects and remote collaborations. These skills ensure you can deliver reliable, efficient solutions tailored to client needs while maintaining professional autonomy and quality standards.

What are some common challenges freelance embedded software engineers face when working with multiple clients?

Freelance embedded software engineers often juggle several projects simultaneously, each with unique hardware platforms, toolchains, and client expectations. Managing communication across different time zones and ensuring clear documentation for handoffs can be challenging. Additionally, freelancers must quickly adapt to varying development environments and maintain up-to-date knowledge of industry standards to deliver quality solutions. Effective organization and transparent project management are key to overcoming these hurdles.

What is a freelance embedded software engineer?

A Freelance Embedded Software Engineer is a professional who designs, develops, tests, and maintains software that operates on embedded systems, such as microcontrollers and specialized hardware, while working independently or on a contract basis. Unlike full-time employees, freelancers typically work with multiple clients on a project-by-project basis. Their responsibilities often include writing firmware, optimizing code for hardware constraints, and integrating software with electronic components. Freelancers in this field enjoy flexibility and variety in their work, but are also responsible for managing their own business operations.

What is the difference between Freelance Embedded Software Engineer vs Embedded Software Developer?

AspectFreelance Embedded Software EngineerEmbedded Software Developer
CredentialsTypically requires a degree in computer engineering or related field, with certifications like ARM or RTOS expertiseSimilar credentials, often with certifications in embedded systems or specific platforms
Work EnvironmentIndependent, project-based, often remote or client-siteUsually employed by companies, working in teams within offices or labs
Industry UsageFreelance market for custom projects, consulting, or short-term contractsFull-time or contract roles within tech, automotive, medical, or consumer electronics industries

While both roles require embedded systems knowledge and similar credentials, a Freelance Embedded Software Engineer works independently on diverse projects, often remotely, whereas an Embedded Software Developer is typically employed by a company, working within a team on ongoing product development.

What are the most commonly searched types of Embedded Software Engineer jobs in Missouri? The most popular types of Embedded Software Engineer jobs in Missouri are:
What cities in Missouri are hiring for Freelance Embedded Software Engineer jobs? Cities in Missouri with the most Freelance Embedded Software Engineer job openings:

Sr. Embedded Software Engineer, DevSecOps Specialist - Active Secret (Onsite)

Collins Aerospace

Saint Louis, MO

$127K - $168K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 17 days ago


Collins Aerospace rating

8.4

Company rating: 8.4 out of 10

Based on 251 frontline employees who took The Breakroom Quiz

31st of 72 rated aerospace companies


Job description

Date Posted:

2026-08-04

Country:

United States of America

Location:

US-IA-CEDAR RAPIDS-137 ~ 855 35Th St NE ~ BLDG 137

Position Role Type:

Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements:

Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​

Security Clearance Type:

Secret - Current

Security Clearance Status:

Active and existing security clearance required on day 1

Join a team that’s shaping the future of military communications. We’re looking for a Senior DevSecOps Software Engineer to help build cutting-edge systems that keep our military personnel safe, connected, and informed. Work alongside industry experts on next-generation embedded software, advanced satellite communications, cryptography, and state-of-the-art computing architectures.

You’ll develop resilient, high-performance networks for UAVs, fighter jets, aircraft carriers, and ground vehicles—featuring low latency, high throughput, anti-jamming capabilities, mobile ad hoc operations, and secure IP connectivity. If you’re ready to push the boundaries of embedded software and communications technology, this is the opportunity for you!

Sign-on Bonus Eligible

What You Will Do​

  • Develop DevSecOps pipelines for our embedded systems in air-gapped environments

  • Integrate tooling, apps, and scripts into the development pipelines

  • Participate in the selection of DevSecOps technologies to enable automation for product development teams

  • Develop applications and scripts to support integration of software updates.

  • Integrate the automation of test, deployment, and software artifact generation in pipelines

  • Collaborate with cross-functional product development teams

  • Work in an agile environment (SAFe)

Qualifications You Must Have

  • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience

  • Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

  • Proven programming experience in Bash, Python, developing scripts and automation for complex workflows.

  • Hands-on experience with Git version control (e.g., BitBucket, GitLab) in collaborative software development.

  • Practical experience with CI/CD pipelines (Bamboo, Jenkins, or similar) for building, testing, and deploying software.

  • Experience developing and deploying containerized applications using Docker, Podman, Kubernetes, or equivalent.

  • Demonstrated proficiency in Linux environments, including scripting, configuration, and software deployment.

  • Familiarity with software artifact management tools such as JFrog Artifactory or equivalents.

Qualifications We Prefer:

  • Experience with configuration management (Ansible, Chef, Puppet) and Infrastructure as Code tools (Terraform).

  • Familiarity with observability/monitoring tools (Grafana) and RESTful API integration.

  • Strong Linux and application administration skills, with knowledge of software development lifecycle practices and configuration management processes.

  • Comfortable programming in C, C++, and Java, with experience in multi-threaded embedded application software and communication systems.

  • Knowledge of IP networking and networking protocols.

  • Experience with Atlassian tool administration (Jira, Confluence) and Agile team environments.

  • Strong team collaboration skills, commitment to meeting project milestones, and producing high-quality results.

What We Offer:

  • Medical, dental, and vision insurance  

  • Three weeks of vacation for newly hired employees  

  • Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option  

  • Tuition reimbursement program 

  • Student Loan Repayment Program  

  • Life insurance and disability coverage  

  • Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection 

  • Birth, adoption, parental leave benefits 

  • Ovia Health, fertility, and family planning  

  • Adoption Assistance           

  • Autism Benefit  

  • Employee Assistance Plan, including up to 10 free counseling sessions  

  • Healthy You Incentives, wellness rewards program 

  • Doctor on Demand, virtual doctor visits  

  • Bright Horizons, child and elder care services 

  • Teladoc Medical Experts, second opinion program  

  • And more!  

Relocation Eligibility

  • Eligible for relocation

Learn More & Apply Now!

Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. 

* Please consider the following role type definitions as you apply for this role.

Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.


At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other – propel us all higher, again and again.
Apply now and be part of the team that’s redefining aerospace, every day.

Employee Referral Eligible

#MISENG

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

Privacy Policy and Terms:

Click on this link to read the Policy and Terms


What Collins Aerospace employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom


Collins Aerospace logo

About Collins Aerospace

Sourced by ZipRecruiter

Collins Aerospace, a Raytheon Technologies company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market.

Industry

Aviation

Company size

10,000+ Employees

Headquarters location

Charlotte, NC, US

Year founded

2018