Junior Developer

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.

Skills

Amazon Web Services (AWS), Ansible, Application Programming Interface (API), Automation, CSS (Cascading Style Sheet), Cloud Computing, Code Reviews, Configuration Management, Continuous Deployment/Delivery, Continuous Integration, Customer Relations, Data Analysis, Database Design, Docker, Establish Priorities, Federal Contracts, Federal Government, GCP (Good Clinical Practices), Git, Government Contracts, Government Intelligence, HTML (HyperText Markup Language), HTML5, Image Management, Information Technology & Information Systems, Intelligence Agencies, Internet Application, Internet Security, Internet Technology, JavaScript, Linux Administration, Mentoring, Microsoft Windows Azure, MySQL, Node.js, Office Equipment, People Management, PostgreSQL, Presentation/Verbal Skills, Problem Solving Skills, Production Systems, Programming Tools, Pytest, Python Programming/Scripting Language, Query Optimization, REST (Representational State Transfer), React.js, Relational Databases (RDBMS), SQL (Structured Query Language), SQLite, Scripting (Scripting Languages), Sensitive Compartmented Information (SCI), Software Development, Source Code Control System (SCCS), Source Code/Configuration Management (SCM), Standup Meetings, Team Player, Test Plan/Schedule, Testing, Time Management, Top Secret Clearance, Unit Test, User Interface/Experience (UI/UX), Vue.js, Web Application Framework, Web Interface, Web Programming

About the Company

ManTech International Corp

Our Mission

Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day.

Our Vision

Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech.

Our Values

Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to:

• TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always.
• INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers.
• QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.

Company Size

5,000 to 9,999 employees

Industry

Other/Not Classified

Founded

1968

Website

https://www.mantech.com/about