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Internship Freelancer Web Developer Jobs in Washington

ManTech International

Junior Developer

Annapolis, MD · On-site

$76K - $128K/yr

Supporting front-end development by building responsive web interfaces and components using HTML ... internships, academic projects, or professional environments. * Proficiency in Python development ...

ASSYST

Junior Full Stack Developer

Sterling, VA · On-site

This is an excellent opportunity for an early-career software developer to work on modern web ... Required Qualifications: * 0-2 years of software development experience (internships and academic ...

otelier.io

Engineering Intern

Bethesda, MD · On-site

$18 - $23.25/hr

We are seeking a motivated Engineering Intern to join our team for a 6-month internship, and as an Intern - Software Development, you will gain hands-on experience in building web applications and ...

Securiport

Jr. Quality Assurance Engineer

Reston, VA · On-site

You should have academic, internship, project-based, or early professional exposure to testing web ... Gain hands-on experience using test management and ALM tools, such as Azure DevOps, OpenText ALM ...

Umd

Meteorological Developer

College Park, MD

$80K - $120K/yr

This can include academic research, internships, goal-defined projects, or other project-based ... Web development experience using JavaScript (e.g. React, jQuery, etc.), HTML5, CSS, and PHP.

Openings & Internships

Salesforce Developer

Columbia, MD · On-site

$54 - $71.50/hr

Overview Cogent People Inc. is seeking a Salesforce Developer with strong expertise in Apex, Lightning Web Components (LWC), Flow, and data integrations. In this role, you will deliver both ...

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Internship Freelancer Web Developer information

What is the difference between Internship Freelancer Web Developer vs Junior Web Developer?

AspectInternship Freelancer Web DeveloperJunior Web Developer
CredentialsTypically enrolled in or recently completed relevant education; no formal certification requiredOften holds a degree or certification in web development or related field
Work EnvironmentFreelance, project-based, often remoteUsually employed by a company, working in an office or remote
Employer & Industry UsageClients, startups, agencies; project-focusedTech companies, agencies, corporate IT teams
Search & Comparison IntentLooking for entry-level, flexible, or freelance opportunitiesSeeking junior-level, full-time or part-time employment

The main difference is that an Internship Freelancer Web Developer is typically a student or recent graduate working freelance on short-term projects, while a Junior Web Developer is usually employed full-time by a company, with more structured training and responsibilities.

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Internship Freelancer Web Developer jobs near you
Junior Developer

Junior Developer

ManTech International

Annapolis, MD • On-site

$76K - $128K/yr

Full-time

Medical, Life, Retirement, PTO

Re-posted 24 days ago

ManTech rating

9.0

Company rating: 9.0 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

30th of 209 rated software companies

Job description

General information
Requisition #
R67979
Locations
USA-MD-Annapolis Junction
Posting Date
05/21/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time
Description & Requirements
Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!
MANTECH seeks a motivated, career and customer-oriented Junior Developer to join our team in Annapolis Junction, MD.
The Junior Developer is part of a dynamic development team, focusing on writing efficient and maintainable code, collaborating with other developers and engineers, and contributing to the development of web applications, backend services, and automation workflows. This role provides opportunities for career growth, mentoring, and hands-on experience with modern software development tools and practices. You will primarily use Python for backend development while gaining exposure to front-end technologies and a variety of tools such as databases, React, Docker, and Ansible.
Responsibilities include but are not limited to:
  • Writing clean, maintainable, and efficient code using Python for backend services, web application logic, and developing/maintaining RESTful APIs.
  • Collaborating with senior developers to design, implement, and optimize software using Git version control practices, while participating in daily standups.
  • Implementing unit tests using frameworks like pytest and conducting code reviews to ensure application quality, performance, and smooth troubleshooting.
  • Supporting front-end development by building responsive web interfaces and components using HTML, CSS, JavaScript, React.js, and TypeScript.
  • Writing and optimizing SQL queries and designing schemas for relational databases such as PostgreSQL, MySQL, or SQLite to support backend functionality.
  • Containerizing applications using Docker and managing application images consistently across development, testing, and production environments.
  • Utilizing Ansible for automating deployment, configuration management, and performing basic Linux system administration and server troubleshooting tasks.

Minimum Qualifications:
  • Bachelor's degree in an IT related field and 1+ years of relevant experience in software development, including internships, academic projects, or professional environments.
  • Proficiency in Python development for writing scripts, backend applications, and developing or consuming RESTful APIs.
  • Experience with Git version control systems for source control management and collaborative team workflows.
  • Knowledge of SQL and experience working with relational databases such as PostgreSQL, MySQL, or SQLite.
  • Understanding of core web technologies including HTML5, CSS3, and JavaScript to build functional web pages and components.
  • Strong problem-solving, communication, and time management skills to effectively prioritize tasks and collaborate within an agile team.

Preferred Qualifications:
  • Experience building components and managing state with React.js, and familiarity with TypeScript.
  • Experience containerizing applications with Docker and managing multi-container setups using Docker Compose.
  • Exposure to automated configuration management using Ansible and basic Linux system administration or deployment troubleshooting.
  • Familiarity with CI/CD pipelines, GitLab CI, and writing unit tests with frameworks like pytest or Jest.
  • Basic understanding of cloud services (AWS, Azure, or GCP) and modern web frameworks like Vue.js, Angular, or Node.js.

Clearance Requirements:
  • An active TS/SCI with Polygraph is required to start.

Physical Requirements:
  • Must be able to remain in a stationary position 50%.
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
  • Must be able to exchange accurate information in these situations.

The projected compensation range for this position is $76,800.00-$128,300.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

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