Specialist - Software Engineering Jobs
Specialist - Software Engineering jobs are open across technology, finance, healthcare, and defense, from associate to staff and principal levels, with specializations in backend systems, platform engineering, and embedded software. Find a role that fits from the openings below and apply directly.
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L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.
L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Job Description:
The Maintenance of Space Situational Awareness Integrated Capabilities (MOSSAIC) Agile Portfolio Engineering (APE) program serves the space domain awareness (SDA) customer through optical and radar sensors and associated command and control (C2) capabilities. The program is seeking a senior specialist full-stack software engineer to join its Special Projects team. You will lead technical design and implementation of secure, scalable mission applications and services using Java, Python, TypeScript, and JavaScript to support sensor integration, command-and-control workflows, and user-facing mission capabilities.
Essential Functions:
- Lead technical design and implementation of full-stack software capabilities, including backend services, application programming interfaces, and web user interfaces.
- Design scalable software using Java, Python, TypeScript, and JavaScript for service-oriented architecture and microservices-based systems.
- Define secure integration patterns, service contracts, and data exchanges across distributed systems.
- Guide code reviews, software testing, technical documentation, and secure-development practices.
- Resolve complex software and integration issues across development, test, and deployment environments.
- Provide technical guidance and mentorship to software engineers while supporting sound engineering decisions.
- Coordinate technical dependencies with partner teams and contribute to delivery planning and execution.
- Travel up to 15% as needed to support program and customer requirements.
Qualifications:
- Bachelor's Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
- Active Secret Security Clearance.
Preferred Additional Skills:
- Experience developing software using C/C++, Rust or Go.
- Experience developing production software using Java, Python, TypeScript, and JavaScript.
- Experience designing and integrating service-oriented architectures, asynchronous messaging patterns, and microservices-based applications.
- Experience designing application programming interfaces, service contracts, and integrations for distributed systems.
- Experience leading technical design, code reviews, automated testing, and software-delivery activities.
- Experience improving continuous integration and continuous delivery workflows for software teams
- Experience building native graphical user interfaces using GTK or Qt.
- Experience applying user interface and user experience design principles to production software.
- Experience defining technical approaches for complex full-stack applications.
- Experience deploying or supporting containerized applications in Kubernetes environments.
- Experience with event-streaming or message-bus technologies, such as Apache Kafka, RabbitMQ, ZeroMQ, or NATS.
In compliance with pay transparency requirements, the salary range for this role in Colorado state is $97,000-$180,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.
The application window for this position will close on 10/30/2026.
L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.
Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.
By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.
L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.
L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.
L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.
Job Description:
The Maintenance of Space Situational Awareness Integrated Capabilities (MOSSAIC) Agile Portfolio Engineering (APE) program serves the space domain awareness (SDA) customer through optical and radar sensors and associated command and control (C2) capabilities. The program is seeking a senior specialist full-stack software engineer to join its Special Projects team. You will lead technical design and implementation of secure, scalable mission applications and services using Java, Python, TypeScript, and JavaScript to support sensor integration, command-and-control workflows, and user-facing mission capabilities.
Essential Functions:
- Lead technical design and implementation of full-stack software capabilities, including backend services, application programming interfaces, and web user interfaces.
- Design scalable software using Java, Python, TypeScript, and JavaScript for service-oriented architecture and microservices-based systems.
- Define secure integration patterns, service contracts, and data exchanges across distributed systems.
- Guide code reviews, software testing, technical documentation, and secure-development practices.
- Resolve complex software and integration issues across development, test, and deployment environments.
- Provide technical guidance and mentorship to software engineers while supporting sound engineering decisions.
- Coordinate technical dependencies with partner teams and contribute to delivery planning and execution.
- Travel up to 15% as needed to support program and customer requirements.
Qualifications:
- Bachelor's Degree and minimum 6 years of prior relevant experience. Graduate Degree and a minimum of 4 years of prior related experience. In lieu of a degree, minimum of 10 years of prior related experience.
- Active Secret Security Clearance.
Preferred Additional Skills:
- Experience developing software using C/C++, Rust or Go.
- Experience developing production software using Java, Python, TypeScript, and JavaScript.
- Experience designing and integrating service-oriented architectures, asynchronous messaging patterns, and microservices-based applications.
- Experience designing application programming interfaces, service contracts, and integrations for distributed systems.
- Experience leading technical design, code reviews, automated testing, and software-delivery activities.
- Experience improving continuous integration and continuous delivery workflows for software teams
- Experience building native graphical user interfaces using GTK or Qt.
- Experience applying user interface and user experience design principles to production software.
- Experience defining technical approaches for complex full-stack applications.
- Experience deploying or supporting containerized applications in Kubernetes environments.
- Experience with event-streaming or message-bus technologies, such as Apache Kafka, RabbitMQ, ZeroMQ, or NATS.
In compliance with pay transparency requirements, the salary range for this role in Colorado state is $97,000-$180,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.
The application window for this position will close on 10/30/2026.
L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law.
Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.
By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions.
L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.
Specialist - Software Engineering Jobs by Experience Level
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Find JobsSpecialist - Software Engineering Job Market
Who's Hiring
- L3Harris24
- LTM Limited21
- Caterpillar2
- McKesson1
- LTIMindtree1
Top Industries Hiring
- Technology & Software
- Consulting & Professional Services
- Manufacturing
- Agriculture & Farming
What Employers Look For
The qualifications that appear most often in specialist - software engineering jobs.
- Bachelor's or master's degree in computer science, software engineering, or a related field
- Proficiency in one or more of Python, Java, Go, C++, or similar languages
- Experience designing and operating distributed systems or microservices at scale
- Familiarity with cloud platforms such as AWS, Azure, or Google Cloud and their core services
- Ability to lead code reviews, define technical standards, and mentor junior engineers
- Experience with CI/CD pipelines, containerization tools like Docker, and orchestration with Kubernetes
Tips for Your Specialist - Software Engineering Job Search
Tailor your resume to the stack
List the specific languages, frameworks, and infrastructure tools each job posting names, not just a generic skills section. Hiring managers scanning specialist - software engineering resumes look for exact matches to their stack before reading anything else.
Highlight system design contributions clearly
Describe the scope and scale of systems you designed or owned, not just features you shipped. Specialist - software engineering roles expect ownership evidence, so quantify throughput, latency improvements, or team impact wherever you can.
Target postings by team type not just title
Search by the owning team, such as platform, infrastructure, or product engineering, because the day-to-day work varies sharply. A specialist title at a platform team means something very different from the same title on a client-facing product squad.
Apply early to roles that fit
Migrate Mate lists specialist - software engineering openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Prepare a system design walkthrough in advance
Most specialist - software engineering interview loops include at least one live system design session. Practice narrating your trade-offs out loud, not just drawing diagrams, because interviewers evaluate your reasoning process as much as your final architecture.
Negotiate scope before you negotiate compensation
Before discussing an offer, clarify ownership scope, on-call expectations, and technical decision authority. These factors affect your day-to-day leverage far more than title, and raising them signals seniority to the hiring team.
Specialist - Software Engineering Jobs: Frequently Asked Questions
Which companies are hiring the most specialist - software engineerings?
The companies hiring the most specialist - software engineerings right now include L3Harris, LTM Limited, and Caterpillar, with the largest share of openings in Texas, Florida, and New Jersey, based on current listings on Migrate Mate as of September 2026. Demand is concentrated in technology, financial services, and defense contracting sectors.
How many specialist - software engineering jobs are remote?
About 22% of specialist - software engineering openings are fully remote or hybrid as of September 2026, making it one of the more flexible roles in the engineering field. Backend, platform, and data-infrastructure sub-areas tend to carry the highest share of remote-eligible postings compared to embedded or hardware-adjacent roles.
How do you become a specialist - software engineering?
You typically start with a degree in computer science or a closely related discipline, then build hands-on experience through junior and mid-level engineering roles before moving into specialist work. Demonstrating ownership of complex systems, contributing to architecture decisions, and deepening expertise in a specific domain such as distributed systems or security are the practical steps that close the gap between senior engineer and specialist.
How do you get hired as a specialist - software engineering with little experience?
Focus on building a portfolio of self-directed projects that show system-level thinking, such as a working distributed cache, a custom compiler pass, or a performance optimization write-up with benchmarks. Open-source contributions to well-known projects carry real weight here because they provide public, reviewable evidence of your code quality and judgment without requiring prior specialist job titles.
What does the specialist - software engineering interview process look like?
The process typically runs through a recruiter screen, a technical phone interview covering language proficiency and problem-solving, one or two coding rounds, a system design session where you architect a real-world problem from scratch, and a final loop that includes a cross-functional or behavioral round. Some employers also add a take-home design exercise or a live debugging session before extending an offer.
Where can I find and apply to specialist - software engineering jobs?
You can find and apply to specialist - software engineering jobs on Migrate Mate, which lists current openings from employers across the United States. Search the listings to find roles that match your skills and experience level, then apply directly to each one that fits.
See All 54 Specialist - Software Engineering Jobs
Find roles that match your experience and apply in just a few clicks.
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