Expert Software Engineer

ManTech; Herndon (AR); On-site; USD 179,000 - 318,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off

Holiday Pay

Disability insurance

Retirement and Savings

Learning and Development

Wellness programs

Job summary

ManTech in Herndon, VA seeks an Expert Software Engineer to join a mission-driven team delivering web apps and data systems for national security. The role focuses on building features, integrating data sources, mentoring junior developers, and coordinating deployment cycles.

Required: TS/SCI with poly, 15+ years, Node.js, SQL/PostgreSQL, API endpoints, Elasticsearch, Linux; Preferred: Python, Vue.js, AWS, Kubernetes, Docker; salary range $179,300-$318,400; competitive benefits.

Qualifications

• High School Diploma and 15+ years programming experience.
• Experience with Node.js.
• Experience with SQL/PostgreSQL databases and writing complex queries.
• Experience creating API endpoints or integrating with other teams’ endpoints to exchange data in a fully authenticated and audited way.
• Experience with Elasticsearch data management.
• Experience working in a Linux-based development environment.
• Bachelor’s Degree in Computer Science, Information Technology, or similar technical field.
• 3+ years of recent experience coding in python.
• Experience using Vue.js.
• Experience with AWS cloud technologies, Kubernetes, and Docker containers.
• Experience with the Assessment and Authorization (A&A) process.

Responsibilities

• Develop new features and enhancements to web applications that allow users to enter, search, and retrieve information.
• Evaluate and integrate data sources as needed; be able to use various data sources and correlate data to answer specific questions.
• Effectively apply good judgement and leadership within project scope and has experience mentoring two to three more junior developers.
• Collaborate with team members regularly to discuss project status, dependencies, or project blockers so that any issues can be addressed early on.
• Effectively communicate with fellow developers and occasionally with end-users.
• Manage the development life cycle and deployment schedule and process.
• Supply regular reports to stakeholder components.

Skills

Node.js

SQL/PostgreSQL

Python

Vue.js

AWS

Kubernetes

Docker

Elasticsearch

Linux

Education

High School Diploma

Bachelor’s Degree in Computer Science or related field

Tools

PostgreSQL

Elasticsearch

Linux

Git

Job description

General information

Requisition # R70801

Location USA-VA-Herndon

Posting Date 09/16/2026

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 Expert Software Engineer to join our team in Herndon VA. This role supports the development and enhancement of mission-critical applications to strenghten our nation's cyber security.

Responsibilities include, but are not limited to:

• Develop new features and enhancements to web applications that allow users to enter, search, and retrieve information
• Evaluate and integrate data sources as needed; be able to use various data sources and correlate data to answer specific questions
• Effectively apply good judgement and leadership within project scope and has experience mentoring two to three more junior developers
• Collaborate with team members regularly to discuss project status, dependencies, or project blockers so that any issues can be addressed early on
• Effectively communicate with fellow developers and occasionally with end-users
• Manage the development life cycle and deployment schedule and process
• Supply regular reports to stakeholder components

Minimum Qualifications:

• High School Diploma and 15+ years programming experience
• Experience with Node.js
• Experience with SQL/PostgreSQL databases and writing complex queries
• Experience creating API endpoints or integrating with other teams’ endpoints to exchange data in a fully authenticated and audited way
• Experience with Elasticsearch data management
• Experience working in a Linux-based development environment

Preferred Qualifications:

• Bachelor’s Degree in Computer Science, Information Technology, or similar technical field
• 3+ years of recent experience coding in python
• Experience using Vue.js
• Experience with AWS cloud technologies, Kubernetes, and Docker containers
• Experience with the Assessment and Authorization (A&A) process

Clearance Requirements: Active TS/SCI with polygraph clearance is required

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

The projected compensation range for this position is $179,300.00-$318,400.00. 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.

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 [e-mail] and provide your name and contact information.