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60 Mantech Senior Applications Developer Jobs Hiring Near You

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech International

Senior CNO Developer

Hanover, MD · On-site

$141.50K - $236K/yr

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover ... Managing the design, development, documentation, testing, and debugging of software applications ...

ManTech

Application Developer

Chantilly, VA · On-site

MANTECH seeks a motivated, career and customer-oriented Application Developer to join our team in ... Designing, programming/developing, and modifying software systems, applications, and tools, both ...

ManTech

Application Developer

Chantilly, VA

MANTECH seeks a motivated, career and customer-oriented Application Developer to join our team in ... Designing, programming/developing, and modifying software systems, applications, and tools, both ...

ManTech

Application Developer

Chantilly, VA · On-site

MANTECH seeks a motivated, career and customer-oriented Application Developer to join our team in ... Designing, programming/developing, and modifying software systems, applications, and tools, both ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Aurora, CO · On-site

$69.90K - $116.40K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Aurora ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

ManTech International

Associate CNO Developer

Hanover, MD · On-site

$76.80K - $128.30K/yr

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD ... Assists with the design, development, documentation, testing, and debugging of applications ...

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ManTech Jobs Information

What are the key skills and qualifications needed to thrive as a Senior Applications Developer, and why are they important?

A Senior Applications Developer needs advanced programming skills, strong problem-solving abilities, and typically a bachelor's degree in computer science or a related field. Expertise in languages like Java, C#, or Python, along with experience using frameworks, version control systems like Git, and cloud platforms such as AWS or Azure, is crucial. Excellent communication, leadership, and project management skills help in mentoring junior developers and collaborating with cross-functional teams. These skills ensure robust, scalable solutions are delivered efficiently while fostering innovation and team productivity.

How does a Senior Applications Developer typically collaborate with other teams during a project?

Senior Applications Developers play a pivotal role in cross-functional collaboration. They often work closely with business analysts to refine requirements, partner with QA teams to ensure robust testing, and coordinate with DevOps or infrastructure specialists to streamline deployment. Regular communication with project managers and stakeholders is also common to keep projects aligned with business goals. This collaborative environment helps ensure that applications are both technically sound and aligned with user needs.

What does a Senior Applications Developer do?

A Senior Applications Developer is responsible for designing, developing, and maintaining complex software applications. They often lead projects, collaborate with cross-functional teams, and ensure that applications meet both business requirements and technical standards. In addition to coding, they may mentor junior developers, review code for quality, and help implement best practices in software development. Their expertise allows them to troubleshoot complex issues and contribute to the strategic direction of software projects.

Does ManTech pay people when they’re sick?

Sometimes. Only some people get paid when they’re sick.
42% of people say they wouldn’t get paid if they were sick but scheduled to work.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and April 2026.

At ManTech, are sick days and vacation days separate paid time off?

Only some people have separate paid time off for sick days and vacation.
50% of people say they have to use vacation days when they’re out sick.
Based on data from 10 people who took the Breakroom Quiz between June 2025 and April 2026.

Do people get paid time off at ManTech?

Most people get paid time off work.
100% of people say they get paid time off.
Based on data from 10 people who took the Breakroom Quiz between June 2025 and April 2026.

How easy is it to get time off at ManTech?

Most people find it easy to get time off.
100% of people report it’s easy to get time off.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and April 2026.

How easy is it to take sick days at ManTech?

Most people find it easy to take sick days.
100% of people report that it’s easy to take time off if they are sick.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people at ManTech feel treated with respect by their managers?

Most people feel treated with respect by their managers.
92% of people say they’re treated with respect by their managers.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people at ManTech get to take their breaks without interruption?

Most people get breaks without interruption.
83% of people report that they get to take their breaks without interruption.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and April 2026.

Is it stressful to work at ManTech?

Some people feel stressed out here.
50% of people say they often feel stressed out at work.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people at ManTech recommend working with their team?

Most people recommend working with their team.
77% of people report that they would recommend working with their immediate team to a friend.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people get enough training when they start at ManTech?

Some people didn’t get enough training when they started.
46% of people report they didn’t get enough training when they started working here.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people get support to advance at ManTech?

Only some people are given support to advance their career here.
In the last year, 36% of people report not being given support to advance their career here.
Based on data from 11 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people think ManTech’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
75% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and April 2026.

Do workers feel well informed about how ManTech is doing?

Most people feel well informed about how the company is doing.
67% of people feel that they are kept well informed about how the company is doing as a whole.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and April 2026.
What other companies are hiring for Senior Applications Developer jobs?
What are the most popular jobs at Mantech?
What are the most popular categories at Mantech?
Infographic showing various Senior Applications Developer job openings at Mantech in the United States as of May 2026, with employment types broken down into 99% Full Time, and 1% Part Time. Highlights an 90% Physical, 1% Hybrid, and 9% Remote job distribution.
Senior CNO Developer

Senior CNO Developer

ManTech International

Hanover, MD • On-site

$141.50K - $236K/yr

Full-time

Medical, Life, Retirement, PTO

Posted 3 days ago

ManTech rating

8.8

Company rating: 8.8 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

31st of 184 rated software companies

Job description

General information
Requisition #
R66024
Locations
USA-MD-Hanover
Posting Date
02/11/2026
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 an experience and mission focused Senior CNO Developer to join our team in Hanover, MD.
In this role, you will contribute to the development of mission-critical cyber capabilities and lead efforts in advanced Computer Network Operations (CNO) and drive technical excellence in CNO development. You'll be part of a dynamic team working on next-generation solutions that safeguard national security systems.
Responsibilities include but are not limited to:
  • Designing and developing new hardware- or software-based Computer Network Operations (CNO) capabilities
  • Managing the design, development, documentation, testing, and debugging of software applications and systems
  • Design and develop end-to-end data flow and tasking for CNO tools developed
  • Applying expert knowledge of network and security concepts to support capability development
  • Communicating status updates and technical progress to leadership and stakeholders
  • Ensuring software quality and compliance with development standards

Minimum Qualifications:
  • BS degree in a technical discipline and 8+ years of technical work experience, or MS Degree in a technical discipline and 6+ years of technical work experience, or High school diploma and 12+ years of technical work experience
  • Experience in Python and C/C++ programming languages
  • Experience with troubleshooting and debugging
  • Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices)
  • Experience with networking protocols (TCP/IP) and socket-level programming
  • Experience with developing CNO capabilities
  • Experience leading technical CNO solutions

Preferred Qualifications:
  • Experience in software analysis or reverse engineering
  • Experience with assembly language programming
  • Experience with unit testing frameworks and practices
  • Experience using Atlassian tools (JIRA, Confluence, Crucible)

Clearance Requirements:
  • Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required

Physical Requirements:
  • Must be able to remain in a stationary position at least 50% of the time.

The projected compensation range for this position is $141,500.00-$236,000.00. 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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