Software Engineer Sr - E3

Lockheed Martin Corporation; Stratford (CT); On-site; USD 110,000 - 205,000; Full time

Benefits offered by this job

Medical, Dental, Vision

Flexible work arrangements

401(k) match

Paid time off

Parental Leave

Job summary

Lockheed Martin Corporation in Stratford, CT, is seeking a Software Engineer to join the Mission Systems team. You will execute all phases of the software development lifecycle—requirements analysis, design, implementation, testing, and documentation—collaborating with Systems, Hardware, and Program Management to deliver reliable avionics software.

The role requires strong teamwork, effective communication, and familiarity with Agile, DevSecOps, DO‑178C, C/C++, Python, Linux, and GitLab.

Qualifications

• Bachelor's degree in Computer Engineering, Computer Science, Software Engineering, or related discipline (or equivalent).
• Minimum5years of professional software‑development experience or3years with a Master’s degree.
• Proven track record designing, implementing, testing, and maintaining complex software systems.
• Expertise in multiple programming languages (C/C++, Python, C#) and software‑architecture patterns.
• Deep experience with CI/CD pipelines, automated testing, static analysis, and configuration management (GitLab, Jenkins, Make/CMake).
• Strong background in Agile Scrum, serving as Scrum Master or Product Owner (certification preferred).
• Experience with DO‑178C, safety‑critical development, and model‑based engineering (MBSE, SysML/UML).
• Ability to mentor junior engineers and lead small development teams.
• Excellent stakeholder communication and presentation skills for inter‑organizational and customer engagements.

Responsibilities

• Execute all phases of the software development lifecycle—requirements analysis, design, implementation, testing, and documentation.
• Coordinate with Systems Engineering, Hardware Engineering, Program Management, and Software Architecture groups.
• Contribute to Agile DevSecOps practices and MBSE activities in a defense context.

Skills

C/C++

Python

C#

Software architecture patterns

Teamwork & communication

Embedded software integration

Education

Bachelor's degree in Computer Engineering, Computer Science, Software Engineering, or related discipline

Tools

GitLab

Jenkins

Make/CMake

Job description

Standard Job Description

What We’re Doing

At Lockheed Martin, innovation and integrity drive everything we do. Within Rotary and Mission Systems, our teams develop advanced avionics and mission-critical solutions that power modern defense platforms. We value your skills, education, and ideas—and give you opportunities to think big, grow, and build technology that matters.

The Work

We are seeking an Software Engineer to join a Mission Systems team that develops software applications supporting critical business and mission objectives. The incumbent will execute all phases of the software development lifecycle—requirements analysis, design, implementation, testing, and documentation—under very general supervision. Success requires strong teamwork, clear communication, and the ability to coordinate with Systems Engineering, Hardware Engineering, Program Management, and the Software Architecture group. Familiarity with Agile development, DevSecOps, DO‑178C, C/C++, Python, Linux, GitLab, and Atlassian tools is desired.

Who We Are

We’re a collaborative team of engineers and innovators developing high-performance avionics systems. Our work combines systems, software, hardware, and integration expertise to deliver reliable capabilities for critical aerospace and defense missions.

Who You Are

You’re a detail-oriented engineer who enjoys turning complex problems into a structured, well designed software product. You communicate effectively, collaborate across disciplines, and are motivated to understand how software, hardware, and systems work together.

You Bring

• A foundation in systems engineering, software engineering, or a related discipline.
• Strong analytical and problem-solving skills.
• Familiarity with software development and management tools.
• Understanding of embedded software and hardware/software integration.
• Strong communication and teamwork skills.

Why Join Us

Build your career while contributing to cutting-edge avionics and mission systems. At Lockheed Martin, you’ll work alongside experienced engineers, grow your technical skills, and help shape technologies that support critical missions.

Basic Qualifications

• Bachelor’s degree in Computer Engineering, Computer Science, Software Engineering, or related discipline (or equivalent).
• Minimum5years of professional software‑development experience or3years with a Master’s degree.
• Proven track record designing, implementing, testing, and maintaining complex software systems.

Desired Skills

• Expertise in multiple programming languages (C/C++, Python, C#) and software‑architecture patterns.
• Deep experience with CI/CD pipelines, automated testing, static analysis, and configuration management (GitLab, Jenkins, Make/CMake).
• Strong background in Agile Scrum, serving as Scrum Master or Product Owner (certification preferred).
• Experience with DO‑178C, safety‑critical development, and model‑based engineering (MBSE, SysML/UML).
• Ability to mentor junior engineers and lead small development teams.
• Excellent stakeholder communication and presentation skills for inter‑organizational and customer engagements.

Pay Information

Full-Time Salary Range: $110300.00 - $204900.00

At Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow—both professionally and personally.

The salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer.

Benefits offered:

Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.

• Annual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.
• For (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. PTO, Vacation, sick leave, and holiday hours are prorated based on start date during the calendar year.