2,448 junior developer jobs at 964 companies in Marcus Hook, PA
1mo
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Junior Developer
Paradise, Pennsylvania, United States
$28-$34/hr OnsiteFull Time
Experience with API integration, databases, and coding in multiple languages (preferably PHP, Python, JavaScript). Familiarity with Jira, Git, Trello, QuickBase/Zoho, and comfortable using AI-assisted development tools.
PHP, Python, JavaScript, GitHub Copilot, Jira, Git, Trello, QuickBase, Zoho, Sage Intacct, REST APIs
5d
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Junior Developer - Contract
Philadelphia, Pennsylvania, United States
OnsiteContract
Proficiency in Next.js and React Native for web, basic PHP, CMS experience (Directus, WordPress), Git workflow, HTML/CSS/JavaScript, strong communication and collaboration skills.
Next.js, React Native, PHP, Laravel, Directus, WordPress, Git, GitHub, GitLab, Bitbucket, HTML, CSS, JavaScript, RESTful APIs, GraphQL, MySQL, PostgreSQL, CI/CD, AWS, Azure, GCP
6d
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Junior Software Engineer
Philadelphia, Pennsylvania, United States
$75k-$95k/yr HybridFull Time
3+ YOE3 years software development experience preferred; hands-on C#/.NET, React/Next.js, JavaScript/TypeScript, SQL, Azure, Power BI/Power Platform, Docker, and CI/CD familiarity; bachelor’s degree preferred.
C#, .NET, React, Next.js, JavaScript, TypeScript, SQL, Power BI, Power Platform, Azure DevOps, Microsoft Azure, Docker, Azure Container Registry (ACR), Azure App Service, Azure Functions, SQL Server Reporting Services (SSRS), Power Apps
6d
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Junior Front End Developer
Fort Washington or Pennsylvania or New Jersey or New Hampshire or Delaware or Colorado or South Dakota or Texas or Wyoming or Alaska or Florida
$55k-$65k/yr RemoteFull Time
0+ YOEBasic proficiency in JavaScript, TypeScript, HTML5, CSS3; familiarity with Angular, responsive design, Git; bachelor's degree or equivalent experience; up to two years frontend experience through projects or work.
Angular, JavaScript, TypeScript, HTML5, CSS3, Git, WalkMe
1w
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Junior Electrical Engineer
Philadelphia, Pennsylvania, United States
FieldFull Time
1+ YOEBSc in Electrical/Computer Engineering, active or obtainable DoD Secret clearance, 1-3 years engineering experience, industrial control systems knowledge, electrical diagram and diagnostic tool proficiency, Microsoft Office skills.
Microsoft Office
3w
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Junior Electrical Engineer
Aberdeen Proving Ground, Maryland, United States
$58k-$117k/yr OnsiteFull Time
ABET B.S. in EE or related, active Top-Secret clearance with ability to obtain TS/SCI, hands-on benchtop experience (oscilloscope, spectrum analyzer, signal generator), RF and protocol (SPI,I2C,UART) familiarity, technical reporting skills.
Oscilloscope, Spectrum Analyzer, Signal Generator, SPI, I2C, UART
1mo
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Junior Electrical Engineer
Philadelphia, Pennsylvania, United States
$60k-$70k/yr OnsiteFull Time
Bachelor's in electrical/electronic engineering required, US citizenship and eligibility for secret clearance, willingness to travel up to 50%, ability to work aboard ships and in confined/industrial conditions.
3d
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Junior OCS Engineer
Philadelphia, Pennsylvania, United States
$75k-$95k/yr HybridFull Time
Bachelor's degree in structural, electrical, mechanical, or related engineering. Experience with overhead electrification design preferred; AutoCAD, MicroStation, STAAD, LPile, and MathCAD experience preferred.
AutoCAD, MicroStation, STAAD, LPile, MathCAD
4d
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Junior OCS Engineer
Philadelphia, Pennsylvania, United States
$75k-$95k/yr HybridFull Time
Bachelor's in structural, electrical or mechanical engineering; experience with OCS design, AutoCAD/MicroStation and analysis software; knowledge of rail operations, construction and regulations.
AutoCAD, MicroStation, STAAD, LPile, MathCAD
2w
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Junior Reverse Engineer
Aberdeen Proving Ground, Maryland, United States
$76k-$156k/yr OnsiteFull Time
2+ YOEActive Secret clearance, BS in related discipline with 2+ years experience, Linux and programming experience (Python/Java/C/C++), knowledge of binary analysis and cryptography, and strong communication skills.
Linux, Python, Java, C/C++, Ghidra, Binary Ninja, IDA, JADX, x64dbg, GDB, I2C, JTAG, UART, SPI, USB, Ethernet, APIs
2w
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Software Engineer II
Wilmington, Delaware, United States
OnsiteContract
5+ YOE5+ years software development with Angular and .NET, C#, Azure, DevOps and CI/CD experience; strong SOLID and testing practices; ability to lead modernization and mentor junior developers.
Angular, .NET Framework, .NET Core, C#, Web APIs, Entity Framework Core, Microsoft SQL Server, Azure, DevOps, CI/CD, GitLab, ASP.NET Web Forms, PrimeNG, Kendo UI
3w
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Junior Network & Cybersecurity Engineer -
Aberdeen Proving Ground, Maryland, United States
$80k-$105k/yr OnsiteFull Time
2+ YOEMinimum 2 years combined network and cybersecurity experience, RMF/DIACAP accreditation experience, Bachelor's in related technical field, IAT Level III and IAM Level III experience, advanced cybersecurity certs preferred, ability to work under TS/SCI.
5d
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IOS Engineer- Connected Living
Philadelphia or Austin
OnsiteFull Time
5+ YOEDesign and develop mobile applications for iOS and Android, perform code reviews, testing, documentation, mentor junior engineers; Bachelor's degree preferred; 5+ years relevant experience.
Apple iOS, Android, GitHub
1mo
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Junior Engineer – Defense and Security Assistance
Aberdeen, Maryland, United States
$85k-$110k/yr OnsiteFull Time
2+ YOEBachelor's in engineering, 2+ years engineering experience, ability to obtain/hold Secret clearance, US citizenship required, travel up to 10%, able to lift 50 lbs.
Combat Net Radio (CNR), SMART-T, Night Vision, Microsoft PowerPoint, Microsoft Excel
1w
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Application Developer I
Coppell or Fort Washington
OnsiteFull Time
1+ YOE1-2+ years full-stack development experience with T-SQL, .NET/C#, JavaScript framework (Angular), APIs, JWT, MSSQL, SSMS; familiarity with SDLC/Agile and cloud platforms.
T-SQL, .NET Framework, C#, JavaScript, Angular, APIs, JWT Token Authentication, MSSQL, SSMS, JSON, XML, ASP.NET, C++, Microsoft Azure, Excel, SQL
2mo
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Salesforce Developer (CPQ)
Chesterbrook or Orlando or Tampa or Nashville
$54k-$196k/yr HybridFull Time
2+ YOEMinimum 2 years Salesforce development and CPQ experience; Apex, LWC, REST API integrations, JavaScript proficiency; Bachelor's degree or equivalent experience; strong problem-solving and communication skills.
Apex, LWC, Rest API Integrations, JavaScript, Salesforce CPQ, Sales Cloud, Salesforce Billing
1mo
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Application Developer C
Philadelphia, Pennsylvania, United States
$72k/yr OnsiteFull Time
2+ YOEBachelor's degree + 2–3 years experience (Master's preferred). Experience with Python, Next.js, Electron, software development, data pipelines, AI tools for image analysis; strong analytical and communication skills.
Python, Next.js, Electron
2w
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Junior Thermal Research Engineer by Eaton
Lancaster, Pennsylvania, United States
OnsiteFull Time
Support design, modeling, and experimental validation of thermal-fluid management systems using CFD, DOE, DAQ, and data-driven methods; proficiency with Python/MATLAB; must be U.S. Person and live within 50 miles of Lancaster facility.
ANSYS (Fluent, Icepak, Mechanical), Python, MATLAB, DAQ, machine learning
2mo
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Ground Software Engineer
King of Prussia, Pennsylvania, United States
OnsiteFull Time
1+ YOEBS degree and typically 1+ years software development experience; active Top Secret clearance with SCI eligibility required; experience with Scaled Agile, DevSecOps, and modern software development tools.
Java, C#, Rust, Angular, Python, Apache Kafka, Apache ActiveMQ, ELK Stack, OpenSearch, PostgreSQL, Redis, Helm, Kubernetes, Git, DevSecOps, CI/CD
1mo
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Application Developer C
Philadelphia, Pennsylvania, United States
$72k/yr OnsiteFull Time
2+ YOEBachelor's and 2+ years' experience required. Develop, deploy, and maintain pathology software, data pipelines, and AI-enabled tools; experience with Python, Next.JS, electron, web apps, databases, APIs, and version control; strong analytical and communication skills.
Python, Next.JS, electron
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