Software Engineer-Developer, Phantom Works Weapons (Experienced or Senior)

Posted 6 Hours Ago
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St. Charles, MO, USA
In-Office
127K-217K Annually
Senior level
Aerospace • Information Technology • Software • Cybersecurity • Design • Defense • Manufacturing
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The Role
Design, develop, test, and maintain embedded software for weapons programs. Translate requirements into designs, develop interfaces, perform unit/integration testing, support system integration, participate in peer reviews, and create documentation while meeting safety, security, and regulatory standards.
Summary Generated by Built In
Job Description
At Boeing, we innovate and collaborate to make the world a better place. We're committed to fostering an environment for every teammate that's welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us.
The Boeing Company is seeking an Application Software Engineer (Experienced or Senior) to join the Phantom Works Weapons team in St. Charles, MO (St. Louis Area). This teamsupports future weapons programs, including the Next Generation Cruise Missile program. This is an opportunity to contribute to high-impact work where interdisciplinary collaboration, systems thinking, and technical creativity come together to shape next-generation capabilities. This position requires an Active U.S. Secret Security Clearance with ability to obtain Top Secret & Special Program Access.
Phantom Works is where imagination meets engineering excellence - a place where bold ideas are shaped to transform the future of defense. The Phantom Works Weapons team is focused on delivering innovative solutions quickly through prototyping, with an emphasis on safety, security, and reliability in demanding operational environments. In this role, you will work across multiple stakeholders and programs to help develop software solutions to complex challenges that require both ingenuity and disciplined execution.
Our teams are currently hiring for a broad range of experience levels including Experienced and Senior Level Software Engineers.
We are looking for someone who thrives in a collaborative environment, takes pride in customer satisfaction, and sees process improvement as part of delivering better outcomes. Success in this role requires comfort working across multiple contracts and programs, adaptability in evolving development environments, and a genuine interest in learning and applying new technologies. If you enjoy solving hard problems and want your work to help define what comes next, this team offers an opportunity to do exactly that.
Find your Future with Us.
Position Responsibilities:
  • Designs, develops, tests, and maintains embedded software throughout the end-to-end lifecycle that meets industry, customer, safety, and regulation standards.
  • Reviews, analyzes, and translates customer requirements into initial design of software products.
  • Develops interface definitions
  • Performs unit and integration testing
  • Participates in peer reviews
  • Supports software system integration and test
  • Create software documentation

Basic Qualifications (Required Skills/ Experience):
  • Bachelor's Degree
  • Active Secret with ability to obtain Top Secret & Special Program Access
  • 3+ years of experience in C++, Python, and C#
  • 3+ years of experience with Linux development
  • 3+ years of experience git or similar version control system
  • 3+ years of experience in software architecture development and open architectures
  • 3+ years with network architectures and software applications that communicate through TCP/UDP based networks

Preferred Qualifications (Desired Skills/Experience):
  • 5 or more years' related work experience or an equivalent combination of education and experience
  • Experienced Level / Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 5+ years of related work experience OR Bachelor's Degree and 9+ years of directly related work experience OR 13+ years of related, relevant experience
  • Senior Level / Bachelor of Science degree from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science and 9+ years of related work experience OR Bachelor's Degree and 13+ years of directly related work experience OR 17+ years of related, relevant experience
  • Active Top Secret/SCI
  • Knowledge of host environments, including processors, operating systems and networks. Ability to build, integrate and troubleshoot software components.
  • Knowledge of software architecture and design methodologies. Ability to synthesize software architectures and designs that meet requirements, characteristics and constraints.
  • Knowledge of software development processes in compliance with established internal and industry standards, guidelines, and best practices in the development, testing, and deployment of software.
  • Knowledge of general and software development and testing tools, capability and usage. Examples include compilers, linkers, debuggers, data analysis tools, graphical user interface builders, post processing tools, requirements management tools, and web authoring tools.
  • Knowledge of domains, characteristics, constraints and products that require software and influence architecture, requirements, interfaces, designs, and integration/test approaches. Domain examples include data processing, ground support, tools and analysis models. Examples of characteristics and constraints that impact software include operating systems, fidelity and information processing capacity. Examples of products include aircraft, missiles, airborne/shipboard/space systems/ground-based support systems.
  • Knowledge of implementation, validation, and verification processes, practices, and guidelines to ensure software development quality, performance, and safety.

Drug Free Workplace:
Boeing is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.
Travel:
Occasional travel may be required (less than 10%)
Relocation:
This position offers relocation based on candidate eligibility. Note: Basic relocation will be offered for eligible internal candidates.
CodeVue Coding Challenge:
To be considered for this position you will be required to complete a technical assessment as part of the selection process. Failure to complete the assessment will remove you from consideration.
Conflict of Interest:
Successful candidates for this job must satisfy the Company's Conflict of Interest (COI) assessment process.
Pay & Benefits:
At Boeing, we strive to deliver a Total Rewards package that will attract, engage and retain the top talent. Elements of the Total Rewards package include competitive base pay and variable compensation opportunities.
The Boeing Company also provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.
The specific programs and options available to any given employee may vary depending on eligibility factors such as geographic location, date of hire, and the applicability of collective bargaining agreements.
Pay is based upon candidate experience and qualifications, as well as market and business considerations.
Summary Pay Range for Experienced Level: $126,650 -$171,350
Summary Pay Range for Senior Level: $160,650 - $217,350
Potential signing bonus for eligible/qualified external candidates.
Applications for this position will be accepted until Jul. 28, 2026
Export Control Requirements:
This position must meet U.S. export control compliance requirements. To meet U.S. export control compliance requirements, a "U.S. Person" as defined by 22 C.F.R. §120.62 is required. "U.S. Person" includes U.S. Citizen, U.S. National, lawful permanent resident, refugee, or asylee.
Export Control Details:
US based job, US Person required
Education
Bachelor's Degree or Equivalent Required
Relocation
This position offers relocation based on candidate eligibility.
Security Clearance
This position requires an active U.S. Secret Security Clearance (U.S. Citizenship Required). (A U.S. Security Clearance that has been active in the past 24 months is considered active)
Visa Sponsorship
Employer will not sponsor applicants for employment visa status.
Shift
This position is for 1st shift
Equal Opportunity Employer:
Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.

Skills Required

  • Bachelor's Degree or equivalent
  • Active U.S. Secret Security Clearance with ability to obtain Top Secret and Special Program Access
  • U.S. Person / U.S. Citizenship required (export control compliance)
  • 3+ years experience in C++, Python, and C#
  • 3+ years Linux development experience
  • 3+ years experience with Git or similar version control system
  • 3+ years experience in software architecture development and open architectures
  • 3+ years experience with network architectures and TCP/UDP based networks
  • Active Top Secret/SCI (preferred)
  • Knowledge of host environments (processors, operating systems, networks) and ability to integrate/troubleshoot software components (preferred)
  • Knowledge of software development processes, testing, validation, and verification practices (preferred)
  • Familiarity with compilers, linkers, debuggers and general software development tools (preferred)
  • Experienced/Senior level experience thresholds (5+,9+,13+,17+ years indicated as preferred depending on level)

What the Team is Saying

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Boeing Compensation & Benefits Highlights

  • Retirement Support For most U.S. nonunion roles, the company matches 401(k) contributions with immediate vesting, and a student‑loan feature counts eligible payments toward earning the company match. Some union agreements also include robust retirement terms, combining a match up to a set percentage with an additional company contribution.
  • Parental & Family Support Paid parental leave is provided at full pay for birth, adoption, surrogacy, or foster placement, alongside adoption and surrogacy assistance. Family resources such as specialized health programs and backup child and elder care are available.
  • Healthcare Strength Coverage spans medical, dental, and vision plus mental‑health and specialty clinical programs (e.g., cancer support and centers of excellence), with many benefits beginning soon after hire. Virtual care, coaching, and access to licensed therapists are included.

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The Company
HQ: Arlington, VA
170,000 Employees
Year Founded: 1916

What We Do

A leading global aerospace company and top U.S. exporter, Boeing develops, manufactures and services commercial airplanes, defense products and space systems for customers in more than 150 countries. Our U.S. and global workforce and supplier base drive innovation, economic opportunity, sustainability and community impact. Boeing is committed to fostering a culture based on our core values of safety, quality and integrity.

Why Work With Us

Aerospace protects and connects people, enables economic growth and trade, provides humanitarian relief and allows for human exploration of space. Boeing collaborates globally to support responsible growth for our industry, and we invest in innovation that improves the efficiency and sustainability of air travel and our operations.

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