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Library Custodian Jobs in Washington (NOW HIRING)

kgs

Declassification Analyst

Washington, DC · On-site

Log requests; verify scope, custodians, and records series; assign tracking numbers; manage queues ... Bachelor's degree (e.g., International Affairs, History, Information/Library Science, Security ...

Koniag, Inc.

Declassification Analyst

Washington, DC · On-site

$90K - $110K/yr

Log requests; verify scope, custodians, and records series; assign tracking numbers; manage queues ... Bachelor's degree (e.g., International Affairs, History, Information/Library Science, Security ...

kgs

Declassification Analyst

Washington, DC · On-site

Log requests; verify scope, custodians, and records series; assign tracking numbers; manage queues ... Bachelor's degree (e.g., International Affairs, History, Information/Library Science, Security ...

Peraton

Senior Software Engineer

Annapolis Junction, MD · On-site

$146K - $234K/yr

... custodians. The products facilitate the capture of information and approvals that allow for the ... libraries against data. * Skilled with big data processing frameworks such as Pig, MapReduce and ...

Peraton

Senior Software Engineer

Annapolis Junction, MD · On-site

$146K - $234K/yr

... custodians. The products facilitate the capture of information and approvals that allow for the ... libraries against data. * Skilled with big data processing frameworks such as Pig, MapReduce and ...

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How much do library custodian jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for library custodian in Washington is $18.00, according to ZipRecruiter salary data. Most workers in this role earn between $15.53 and $19.86 per hour, depending on experience, location, and employer.

What is a library custodian?

A Library Custodian is responsible for maintaining the cleanliness and upkeep of a library facility. Duties typically include cleaning floors, restrooms, and furniture, as well as managing trash disposal and minor maintenance tasks. They help create a clean and welcoming environment for patrons and staff. In some cases, they may also be responsible for setting up rooms for events and ensuring safety standards are met.

What are the typical daily responsibilities of a library custodian?

A Library Custodian is primarily responsible for ensuring that all areas of the library, including reading rooms, offices, restrooms, and staff spaces, are clean, organized, and safe for both visitors and employees. Daily tasks often include sweeping, mopping, vacuuming, trash removal, restroom sanitation, and refilling supplies, as well as routine maintenance like replacing light bulbs or performing small repairs. Custodians also help set up rooms for events or meetings and may work closely with library staff to address urgent cleaning or maintenance needs. This role involves a mix of independent work and collaboration, with some flexibility in schedule depending on library hours and special events. Working as a library custodian offers a vital behind-the-scenes contribution to the efficient and pleasant operation of the facility.

What are the key skills and qualifications needed to thrive in the library custodian position, and why are they important?

To thrive as a Library Custodian, you need proficiency in cleaning techniques, basic maintenance, and a general knowledge of facility safety standards, often supported by a high school diploma or equivalent. Familiarity with cleaning equipment, safe handling of chemicals, and sometimes basic building management systems is typically required. Reliability, attention to detail, and strong communication skills help custodians integrate smoothly into library teams and respond efficiently to staff and patron needs. These abilities are vital to uphold a clean, safe, and welcoming environment that supports the library’s mission and daily operations.

How much does a library custodian make?

The average salary for a library custodian typically ranges from $25,000 to $35,000 per year, depending on location, experience, and employer. Custodians often work full-time hours and may need to perform cleaning, maintenance, and safety tasks using basic tools and supplies.

What are the most commonly searched types of Library Custodian jobs in Washington?

The most popular types of Library Custodian jobs in Washington are:

What are popular job titles related to Library Custodian jobs in Washington?

For Library Custodian jobs in Washington, the most frequently searched job titles are:

What job categories do people searching Library Custodian jobs in Washington look for?

The top searched job categories for Library Custodian jobs in Washington are:

What cities in Washington are hiring for Library Custodian jobs?

Cities in Washington with the most Library Custodian job openings:

Library Custodian jobs near you
Infographic showing various Library Custodian job openings in Washington as of August 2026, with employment types broken down into 83% Full Time, 13% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution, with an average salary of $37,439 per year, or $18 per hour.

ME00585-Software Engineer 2.5

Momentum Engineering, Inc.

Annapolis, MD • On-site

$160K - $225K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Re-posted 6 days ago

Job description

Momentum Engineering, Inc. fosters an employee-centric culture. Our strength lies in our people. With a high percentage of employees holding advanced degrees in engineering, computer science, and related disciplines, we bring deep technical expertise to every mission. Our team includes professionals with security clearances and full-scope polygraphs, ensuring trusted, secure support for the most sensitive national security initiatives. Additionally, our workforce is equipped with industry-leading certifications, demonstrating a commitment to continuous learning and excellence. Most importantly, our exceptional employee retention rate reflects a culture of professional growth, mission focus, and dedication-ensuring long-term stability and expertise for our customers' critical needs.
Job Summary
  • Seeking a Software Engineer to support a suite of web-based applications that automate data management for Intelligence Community (IC) data custodians, enabling compliant data movement, reuse, and integration across mission systems
  • This role focuses on developing data-driven solutions to extract meaning from structured and unstructured data, supporting data ingestion, enrichment, and characterization efforts
  • The engineer will contribute to mission-critical capabilities that standardize data workflows and improve accessibility, with flexible work hours based on team needs

Primary Responsibilities
  • Develop strategies to analyze and extract value from structured and unstructured data to support mission objectives
  • Apply statistical methods and/or machine learning techniques to identify patterns, trends, and entity behaviors
  • Design and deliver data visualizations and analytics using tools such as DataXplorer and GMAE to present insights in a clear, mission-focused format
  • Support data ingestion and characterization, including defining and developing requirements for new and existing data types
  • Develop and implement data enrichment and conversion processes to improve data quality, usability, and integration
  • Work with metadata, data ontologies, and schemas to enhance data organization and interoperability
  • Utilize databases and query tools to manage and analyze datasets across formats such as XML, CSV, and JSON
  • Contribute to software development using Java and/or Python, supporting analytic and data processing capabilities
  • Leverage tools such as NiFi to support data flow, ingestion, and transformation processes
  • Collaborate with customer stakeholders to understand mission needs and translate them into technical solutions
  • Support integration of applications with downstream systems, ensuring standardized and compliant data movement
  • Participate in team collaboration, requirements analysis, and continuous improvement efforts within the development lifecycle

Required Qualifications
  • Must have active Top Secret/SCI clearance with NSA Full Scope Polygraph
  • Seventeen (17) years of experience as a Software Engineer (SWE) supporting programs and contracts of similar scope, type, and complexity
  • Bachelor's degree in Computer Science or a related discipline from an accredited college or university
  • Four (4) additional years of SWE experience on projects with similar software processes may be substituted for a bachelor's degree
  • Minimum of 6 recent years of development experience

Desired Qualifications
  • Experience with one or more of the following:
    • Analytic development experience using scripting languages such as Python and Scala to use statistical libraries against data
    • Skilled with big data processing frameworks such as Pig, MapReduce and Spark to scale algorithms over large volumes of data
    • Experience employing combination (2 or more) of analysis, computer science, mathematics, and software engineering skills to devise strategies for extracting meaning and value from large datasets
    • Experience with predictive analytics, machine learning, and data mining
    • Skilled with data flows, Pig scripting, Hadoop MapReduce, and various analytic tools
    • Skilled working with development and SE teams, other stakeholders agencies, and leadership
    • Knowledge of data indexing and analytic development
    • Experience working with cloud service providers and data stewards
    • Demonstrated experience in network metadata processing, manipulation, and analysis in support of intelligence analysis

Exempt hourly position. 11 paid holidays, minimum of 3 weeks PTO, company sponsored group medical plan, company paid dental, vision, life insurance, and STD/LTD plans. Salary is dependent upon the candidate's experience and qualifications.
The pay range for this role is:
160,000 - 225,000 USD per year (NBP)

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