mid level developer Jobs in washington, dc

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501 - 520 of 2,348 Jobs

Senior Salesforce Developer - Remote

ICF

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Remote or Reston, Virginia, USA

Full-time

ICF is a mission-driven company filled with people who care deeply about improving the lives of others and making the world a better place. Our core values include Embracing Difference; we seek candidates who are passionate about building a culture that encourages, embraces, and hires dimensions of difference. Our Health Engineering Systems (HES) team works side by side with customers to articulate a vision for success, and then make it happen. We know success doesn't happen by accident. It take
Posted 6 days ago | Updated 12 hours ago

Senior Firewall Engineer

SAIC

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Quantico, Virginia, USA

Full-time

Job ID: 2507101 Location: QUANTICO, VA, US Date Posted: 2025-07-02 Category: Information Technology Subcategory: Network Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: Top Secret Clearance Level Must Be Able to Obtain: TS/SCI Potential for Remote Work: No Description Introduction: Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capa
Posted 8 days ago | Updated 9 hours ago

Senior Transit Engineer

HDR, Inc.

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Washington, District of Columbia, USA

Full-time

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we work to weave diversity, equity, and inclusion into our work and foster a sense of belonging throughout the company and within our communities, we constantly ask ourselves: What is our impact on the world? Watch Our Story:' ' Each and every role throughout our organ
Posted 60+ days ago | Updated 12 hours ago

Lead Java Developer

Agile

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Remote or Atlanta, Georgia, USA

Full-time

Location: Hybrid Remote in Atlanta or 100% Remote must be in the United States and willing to work Eastern business hours Employment Type: Permanent / Direct Hire / Full-time Salary: Up to $140K (depending on experience) + bonus Work Authorization: Due to client requirements, only candidates who do not require sponsorship now or in the future will be considered. Benefits: Unlimited PTOFull healthcare coverage for employees + family (medical, dental, vision, life, and supplemental insurances)Shor
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Posted 1 day ago

Sr. ServiceNOW developer with CSM experience - Customer Service Management + ITSM

Georgia IT

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Remote

Contract

Sr. ServiceNOW developer with CSM experience - Customer Service Management + ITSM Remote Duration 10-12 months Rate DOE Looking for Senior ServiceNow Developer with the following skillset/experience9-10 years of hands-on experience as a ServiceNow developerUI Builder good to haveCustomer Service (we have 3 CSM instances) must have hands-on experience including - Integration + customization configurationIntegration + customization +configurationITSM MUST haveHRSD should be conversantPortal De
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Posted 3 days ago

System Developer - C++

Judge Group, Inc.

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Manassas, Virginia, USA

Contract

Location: Manassas, VA Description: The Judge Group's direct client in the financial services domain is seeking an experienced Senior System Developer - C++ in Manassas, VA/ HYBRID. Job Title: System Developer - C++ Job Location: Manassas, VA/ Hybrid Job Description: Code, test, and review software using technologies including C++, STL, Boost, Multithreading, Unix, Perl, Python and XML. Requirement analysis and Design of new features and enhancements to existing components. Produce/update
Posted 4 days ago | Updated 8 hours ago

Senior System Engineer

Booz Allen Hamilton

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Fort Meade, Maryland, USA

Full-time

Job Number: R0219964 System Engineer, Senior The Opportunity: Are you looking for an opportunity to combine your te chn ical skills with big-picture thi nk ing to make an impact on national security? As a systems engineer on our team, you'll provide networking, fabrication, security, lab, and deployment support by delivering engineering solutions for network configurations, deployment loading of sof tware, and patching and troubleshooting deployed sof tware and hardware on a variety of servers
Posted 53 days ago | Updated moments ago

Senior Engineer / Analyst for ISRT & BMC2 Applications

Johns Hopkins University AppliedPhysicsLaboratory

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Laurel, Maryland, USA

Full-time

Description Do you enjoy leading teams, mentoring staff, and guiding complex technology development efforts and analyses? Are you interested in researching, developing, and analyzing innovative ways to produce impactful information from many different types of sensors and sources of data? Do you want to advance US defense capabilities in Intelligence, Surveillance, Reconnaissance, and Targeting (ISRT) or Battle Management Command and Control (BMC2)? If so, we're looking for someone like you
Posted 60+ days ago | Updated 12 hours ago

Senior Test Engineer

Leidos

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Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Test Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting,
Posted 13 days ago | Updated 11 hours ago

Senior Software Engineer

Circles Inc.

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Remote or San Francisco, California, USA

Full-time

Circle is a financial technology company at the epicenter of the emerging internet of money, where value can finally travel like other digital data - globally, nearly instantly and less expensively than legacy settlement systems. This ground-breaking new internet layer opens up previously unimaginable possibilities for payments, commerce and markets that can help raise global economic prosperity and enhance inclusion. Our infrastructure - including USDC, a blockchain-based dollar - helps busines
Posted 34 days ago | Updated 12 hours ago

Software Developer (Senior)

American Systems Corporation

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Springfield, Virginia, USA

Full-time

Overview AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. Responsibilities Conducts research in design, development, testing and utilization of electronic data processing software.Designs, develops, documents, tests and debugs applications software and systems that contain logical and
Posted 60+ days ago | Updated 12 hours ago

Senior Software Developer (C++)

Brains Technology Solution

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Remote

Contract

Senior Software Developer (C++) Remote 10+ YOE W2/1099 Position Note :: IRS MBI CLEARANCE IS REQUIRED Job Description :: Developer to design and develop C++ components to extract data from DB2 database on Mainframe and convert it to XML format for downstream processing. Design and develop C/C++ components in compliance with project guidelines 60% Perform unit and development level integration testing as needed 20% Perform code maintenance based on needs of IBM testing, customer testing, and prod
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Posted 13 hours ago

Senior Advanced Engineer- IPT Lead

General Dynamics

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Herndon, Virginia, USA

Full-time

Basic Qualifications Education Requirements: Requires a Bachelor's degree in Mechanical Engineering, or a related Science, Engineering or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Clearance Requirements: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for acces
Posted 60+ days ago | Updated 11 hours ago

Lead Cybersecurity Engineer

Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is seeking a Lead Cybersecurity Engineer to join a cutting-edge decision science security organization. The Lead Cybersecurity Engineer will be responsible for designing robust cybersecurity measures and access management solutions to protect the organization's systems and data. Responsibilities of the Lead Cybersecurity Engineer include: Design robust cybersecurity measures and access management solutions to protect the organization's systems and data. Lead the implementatio
Posted 25 days ago | Updated 24 days ago

Software Engineer, Backend

West Coast Consulting LLC

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Remote

Contract

Job Description Title: Software Engineer, Backend Duration: Aug 5, 2025 - Jul 31, 2026 Location: Remote (North America) TECHNICAL SKILLS Must Have3+ years of software development experience in one or more general purpose programming languages (Java, Scala, Go, C++, Python).Nice To Have Experience with prompt engineering, machine learning or data science. Cost Center Code49 - Tech-Ads Engineering JOB DESCRIPTION The Ad Safety & Verification (ASV) team is small, scrappy, and able to execute o
Posted 3 days ago | Updated 8 hours ago

Software Engineer

Tavant

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Remote

Contract

Hello, Greeting from Tavant. please find the job description below and let me know your interest to submit. Role: Software Engineer Location: Remote 3 experienced engineers (likely senior level) to contribute to backend development. The ideal candidates should: 7+ years of development experienceFamiliarity with Flask (for building APIs), PostgreSQL, Redis, and Google Cloud (Google Cloud Platform)Node jsReactCybersecurity experience preferred
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Posted 2 days ago

Senior OIC Developer

KPG 99 Inc.

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Remote or US

Contract, Third Party

Job Title: Senior OIC Developer Job Term: Contract Duration: Long Term, 6 months to start Location: Remote Work Work hours 8-5 or 9-6 EST Job Description: SCOPE of WORK: As part of this project, our client is replacing JDE Financials & Supply Chain with Oracle ERP Cloud. As part of this program, existing integrations with multiple internal/external applications need to be re-developed utilizing OIC to integrate with the new ERP system. Seeking a Senior OIC developer to engage in technical integ
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Posted 25 days ago | Updated 17 hours ago

Lead Software Engineer

Salas O'Brien Engineers Incorporated

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Remote

Full-time

Lead Software Engineer - Job Description At Salas O'Brien we tell our clients that we're engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That's why we're committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future. Building for the long-term means that all our team members can expect to work on amazing projects with a people-first appr
Posted 40 days ago | Updated 12 hours ago

Senior System Engineer (Government)

AT&T Inc.

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Oakton, Virginia, USA

Full-time

Job Description: This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to
Posted 60+ days ago | Updated 12 hours ago

Senior Cybersecurity Engineer

Booz Allen Hamilton

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Chantilly, Virginia, USA

Full-time

Job Number: R0219698 Cybersecurity Engineer, Senior The Opportunity: Are you looking for an opportunity to share your experience in network and system security to safeguard our nation? As a cybersecurity engineer, you can identify, implement, and operate the systems, tools, and approaches needed to assess vulnerabilities, repel threats, and improve enterprise security. We need your experience to lead the development and implementation of security solutions that protect critical national securit
Posted 60+ days ago | Updated moments ago