4,105,372+ Lead Python Programming Software Engineer Level 4 Jobs in USA — Top Companies Hiring June 2026

Professional job seekers finding United States jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Entry Level Software Engineer

**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. **Boeing Defense, Spa ...

Mid Level Software Engineer

***An active or rein-statable TS/SCI with Polygraph security clearance is REQUIRED. Please do not apply if you currently do not possess this level of clearance.*** Are you a Mid-Level Software Engineer who is ready for a new challenge that will launch your career to the next level? + Tired ...

Software Engineer Level 3

RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time**Description** At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact ...

Software Engineer Mid Level

**Description:** Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future.At Lockhee ...

Level 3 Software Engineer

**Description:** **WHO WE ARE**Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers ...

Software Engineer Level 6

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time**Description** At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that ...

Entry Level Software Engineer

**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 successful candid ...

Software Engineer, Level 1

The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements. Works ...

Software Engineer Level 5

Requisition ID: 2648Standard Title: Principal Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Washington, DCWork Type: On-SiteShift: FirstReferral Eligibility: Eligib ...

Software Engineer Level 1

Responsibilities:Ability to develop, maintain, and enhance complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon docume ...

Software Engineer, Level 1

What You Will Do:At Independent Software, as a Software Engineer Level 1, you will support the development, deployment, and enhancement of mission-critical software systems supporting satellite communications and RF signal processing environments.This is a highly collaborati ...

Software Engineer, Level 2

What You Will Do:As a Software Engineer Level 2 at Independent Software, you will support the development and deployment of containerized applications and infrastructure automation using modern DevOps and cloud-native technologies.You will collaborate across engineering team ...

Entry Level Software Engineer

**Job Description**Our employees work on the world s most advanced electronics from saving emissions in the City of Lights to powering the Mars Rover to protecting the F-35 fighter jet. At Electronic Systems, you ll be among the brightest minds, working on the aerospace and defense industry s most difficult ...

Entry Level Software Engineer

Job title: Entry-Level Software EngineerOverviewSeeking a Software Engineer to support development and sustainment of complex, mission-critical systems. This role involves full lifecycle software engineering including design, implementation, integration, testing, and analysis within a structured environment. ...

Mid Level Software Engineer

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Software Engineer to join our intel team. Join CNO's Custom Media Operations team, winners of the President's Intelligence Advisory ...

Mid Level Software Engineer

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Software Engineer to join our intel team. We are seeking a Software Engineer to build and advance a cutting-edge agentic platform d ...

Mid Level Software Engineer

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Mid-Level Software Engineer to join our intel team. Join us in building the next generation of AI infrastructure that will power in ...

Mid Level Software Engineer

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Mid-Level Software Engineer to join our intel team. We are seeking a seasoned Software Engineer for development and maintenance of ...

Mid Level Software Engineer

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021! Belay Technologies is seeking a Software Engineer (Backend) with technical experience to join our intel team. Candidates should have the following qual ...

Software Engineer (Level 2)

**Worker Type** Regular **Job Description** **Summary** The Software Engineer (Level 2) is responsible for developing, maintaining, and enhancing complex and diverse software systems, such as processing-intensive analytics, novel algorithm development, manipulation of extremel ...

Mid level Software Engineer

**Worker Type** Regular **Job Description** AV’s Specialized Exploitation & Targeting (SET) Department is seeking a mid-level Software Engineer to support NASIC at Wright-Patterson AFB. You will write and maintain multiple source code repositories for data analysis tools to support the ...

Senior Level Software Engineer

**Worker Type** Regular **Job Description** AV's Specialized Exploitation & Targeting (SET) Department is seeking a Senior Software Engineer to provide technical leadership and strategic direction in support of NASIC at Wright-Patterson AFB. You will lead the architecture, development, ...

Mid Level Software Engineer

**Worker Type** Regular **Job Description** **Summary** AV Inc. is seeking highly motivated **Software Engineers** to serve on an Agile Software team. The ideal candidate will be responsible for designing and developing robust software solutions using Java and Python. You wi ...

Mid Level Software Engineer

**Worker Type** Regular **Job Description** **Job Description**AV’s Specialized Exploitation & Targeting (SET) Department is seeking a mid-level Software Engineer to support NASIC at Wright-Patterson AFB. You will write and maintain multiple source code repositories for data analys ...

Entry Level Software Engineer

**Worker Type** Regular **Job Description** AV’s Specialized Exploitation & Targeting (SET) Department is seeking an entry-level Software Engineer to support NASIC at Wright-Patterson AFB. You will write and maintain multiple source code repositories for data analysis tools to support ...

Software Engineer Level 2

Software Engineer Level 2<br /> TS/SCI w/Polygraph<br /> Fort George G Meade, MD 20755<br /> $155K-$165K<br /> <br /> Required Skill<br /> Java, ReactJs, Spring Boot, Docker, MongoDB, AWS<br /> <br /> Experience<br /> 5+ Years<br /> & ...

Software Engineer Level 1

Software Engineer Level 1 SoftwareHanover, MD | Full Time Position:|Software Engineer Level 1 Location: Hanover, MD Category: Software Engineering Schedule: Standard Day Shift, Monday–Friday Clearance Requirement: Active TS/SCI with Polygraph (required) Experience Requirement: Mid- ...

Software Engineer Level 5

Requisition ID: 2647Standard Title: Principal Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Reston, VAWork Type: On-SiteShift: FirstReferral Eligibility: Eligible</ ...

Software Engineer Level 2

**Description:** Our products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company's unrivaled results in the aeronautics industry. Our ...

Software Engineer Level 2

**Description:** Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future.At Lockhee ...

Software Engineer Level 2

**Description:** Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future.At Lockhee ...

Software Engineer Mid Level

**Description:** **WHAT WE'RE DOING**Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks ...

Software Engineer Level 5

**Description:** **We are** _Lockheed Martin_Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unr ...

Senior level Software Engineer

**Description:** Senior‑level Software Engineer to lead the development, integration, and maintenance of the Recording, Commanding, and Telemetry Unit (RCTU) software stack within our Electrical Ground Support Equipment (EGSE) portfolio. The successful candidate will partner with hardware engineers, test sp ...

Software Engineer (level 2)

**Description:** WHO WE AREThe Skunk Works (Lockheed Martin Advanced Development Programs) is looking for world-class talent in Software Engineering to be a part of a team that will carry on our 80-year tradition-making history in advanced aircraft development. The vehicle management software team writ ...

Software Engineer Level 3

**Description:** Our products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company's unrivaled results in the aeronautics industry. Our ...

Software Engineer Level 3

**Description:** Our products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company's unrivaled results in the aeronautics industry. Our ...

Software Engineer Level 2

**Description:****We are Lockheed Martin Aeronautics!****Potential Sign on Bonus included for external candidates!**As a part of the Systems Engineering Integration and Test Team (SEIT), you will immediately impact the business with your ingenuity, creativity, and ideas that will be the catalyst ...

Software Engineer Level 3

**Description:****We are Lockheed Martin Aeronautics!****Potential Sign on Bonus included for external candidates!**As a part of the Systems Engineering Integration and Test Team (SEIT), you will immediately impact the business with your ingenuity, creativity, and ideas that will be the catalyst ...

Software Engineer Senior Level

**Description:** **WHAT WE'RE DOING**Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks ...

Software Engineer Level 5

**Description:****We are Lockheed Martin Aeronautics!****Potential Sign on Bonus included for external candidates!**As a part of the Systems Engineering Integration and Test Team (SEIT), you will immediately impact the business with your ingenuity, creativity, and ideas that will be the catalyst ...

Software Engineer Level 2

**Description:** **WHO WE ARE**Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers ...

Level 3 Software Engineer

**Description:** **WHO WE ARE**Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers ...

Software Engineer Level 3

**Description:** **We are** _Lockheed Martin_Lockheed Martin’s products play an important role in the national security of the United States and more than 70 other countries, ensuring peace and stability around the world. Highly trained and specialized personnel and facilities are key to the company’s unr ...

Intermediate Level Software Engineer

Jacobs is a global technology company, delivering solutions for a more connected, sustainable world. Become part of a respected and hard-working team delivering innovative, next generation aviation solutions to our customers across the globe. We design, build, and secure critical military aircraft solutions usi ...

Intermediate Level Software Engineer

Jacobs is a global technology company, delivering solutions for a more connected, sustainable world. Become part of a respected and hard-working team delivering innovative, next generation aviation solutions to our customers across the globe. We design, build, and secure critical military aircraft solutions usin ...

Software Engineer Level 2

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time**Description** At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that ...

Software Engineer Level 5

RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of the Time**Description** At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that ...

Software Engineer Mid Level

**Description** We are seeking a Mid-Level Software Engineer with a web application development with exposure to full-stack capabilities (front-end, back-end, full-stack) to design, build, test and maintain scalable software systems. This role will play a part in creating front-end and backend services, ...

Software Engineer Junior Level

**Description** We are seeking a Junior-Level Software Engineer with a full-stack capabilities to design, build, test and maintain scalable software systems. This role will play a part in creating front-end and backend services, developing APIs, and collaborating with development team to deliver reliabl ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

    Lead Python Programming Software Engineer Level 4 Jobs in United States Job Search Guide, Trends and Insights