sr. software engineer Jobs in washington

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Sr. Software Engineer

KMM Technologies, Inc

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Reston, Virginia, USA

Full-time, Contract

KMM an ISO 9001:2015, CMMI Level 2 certified company provides high-quality IT consulting services and innovative solutions by using the most effective and modern technologies. We have a core group of Subject Matter Experts with certifications and immense experience in successfully delivering mission-critical solutions. We have extensive industry experience in the financial, insurance, Health IT, media, marketing, retail, and government markets. We have a proven track record in understanding clie
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Posted 7 days ago | Updated 1 day ago

FLEX Senior Software Engineer

Marriott International

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Bethesda, Maryland, USA

Full-time

Job Description This is a temporary position. Leads workgroups and/or functions as a technical expert. Resolves and makes decisions on more complex, non-routine service requests with limited to moderate risk. Performs research, analysis, design, creation and implementation of applications to meet current and future user requirements. Defines and creates the next generation of solutions to drive Marriott value. Monitors multiple projects by Service Provider to successful completion, maintaining
Posted 38 days ago | Updated 11 hours ago

Homes.com - Senior Software Engineer (C#/.NET)

Costar Group

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Arlington, Virginia, USA

Full-time

Homes.com - Senior Software Engineer (C#/.NET) Job Description CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. Homes.com is already one of the fastest growing real estat
Posted 18 days ago | Updated 11 hours ago

Senior Software Engineer - Level 7

PTR Global

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Arlington, Virginia, USA

Full-time

Senior QA Engineer - 45361-1 Arlington, VA - Onsite from Day One 2+years contract Ideal Candidate Qualifications: 6+ years of experience as a QA Engineer, Software Engineer in Test, Test Automation Engineer or Developer, leveraging software QA tools and processes 4+ years of experience with a variety of different testing techniques such as test planning, UI testing, automated testing, analytic testing, or test-driven development strategies. 4+ years of experience with C#, React/Redux, Seleni
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Posted 13 days ago | Updated 8 hours ago

Senior Software Engineer / Python / TypeScript

Motion Recruitment Partners, LLC

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Washington, District of Columbia, USA

Full-time

A privately funded AI startup that is leveraging LLMs to streamline work flows and proposal approvals for US Government Agencies is hiring for a Senior Software Engineer to join their team. The startup has reached several million in annual recurring revenue within the last 2 years is hiring for several full stack engineers to the team. This position is full life cycle development where you will be owning your code from design, implementation and deployment. In this role you you will be building
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Posted 37 days ago | Updated 8 hours ago

Senior Software Engineer / GenAI

Motion Recruitment Partners, LLC

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Washington, District of Columbia, USA

Full-time

A prominent fintech company based in Washington, DC is searching for a Senior Software Engineer to join their fast-growing team. Their SaaS is one of the leading personal finance apps, boasting 5+ million active members. Including features like their subscription management tool, bill negotiation, and spending insights, they aim to help their users optimize financial health through saving them money as well as helping them build wealth for a greener future. Preferred Skills & Experience 5+ year
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Posted 56 days ago | Updated 8 hours ago

FLEX Senior Software Engineer - SEO

Marriott International

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Bethesda, Maryland, USA

Full-time

Job Description This is a temporary position. JOB SUMMARY As a member of the Enterprise Search Engine Optimization Development team, you will be a part of a team responsible for implementing and maintaining technical SEO enhancements across the diverse portfolio of Marriott's websites and systems. This individual will serve as a senior technical resource responsible for managing the full software development lifecycle, from requirements analysis to deployment, ensuring high-quality, scalable,
Posted 32 days ago | Updated 11 hours ago

Senior Software Engineer

Booz Allen Hamilton

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Fort Meade, Maryland, USA

Full-time

Job Number: R0221713 Software Engineer, Senior The Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to create a system that will make a difference, we need you on our team. We're looking for a seasoned developer like you with the expertise needed to build software and systems from vision to production ready. This role is more than just coding. As a
Posted 17 days ago | Updated moments ago

Senior Software Engineer

RTX Corporation

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Sterling, Virginia, USA

Full-time

Date Posted: 2025-06-25 Country: United States of America Location: VA542: 22260 Pacific Blvd, Dulles 22260 Pacific Boulevard Building CC4, Sterling, VA, 20166-6916 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret Raytheon Company Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in technolo
Posted 13 days ago | Updated 11 hours ago

Senior Software Engineer

NNData

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Remote or Reston, Virginia, USA

Full-time

Software/Systems Architect/Engineer NNData Corporation is seeking a cleared Computer Software/Systems Architect/Engineer to support a government intelligence agency contract. Design and execute the technical implementation for infrastructure and cloud computing services. Deliver solution that aligns with the customer s business needs and requirements. Provide design recommendations and assistance to solution deployment team members. Assist in the development of detailed project specifications an
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Posted 20 days ago

Senior Software Engineer

General Dynamics

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Manassas, Virginia, USA

Full-time

Basic Qualifications Requires a Bachelor's degree in Software Engineering, or a related Science, Engineering or Mathematics field. Also requires 2+ years of job-related experience or a Master's degree. Agile experience preferred. Must have JavaScript and Kubernetes. CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required within a reasonable period. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements
Posted 6 days ago | Updated 11 hours ago

Senior Software Engineer - AWS

Fannie Mae

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Remote or Reston, Virginia, USA

Full-time

At Fannie Mae, the inspiring work we do helps make a home a possibility for millions of homeowners and renters. Every day offers compelling opportunities to impact the future of the housing industry while being part of a collaborative team thriving in an energizing environment. Here, you will grow your career and help create access toaffordable housing finance. Job Description As a valued colleague on our team, you will contribute to developing data infrastructure and pipelines to capture, int
Posted 18 days ago | Updated 9 hours ago

Sr. Software Engineer TS/SCI Polygraph $25k SIGN ON!

Leidos

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Franconia, Virginia, USA

Full-time

Description Leidos has an exciting opportunity for a Senior Software Engineer to join a high performing agile team using the Scaled Agile Framework (SAFe) methodology to support a nationally significant and fast-paced cryptographic key management program and we are extending a $25,000.00 SIGN ON BONUS! Program execution here follows DEVOPS best practices and employs robust development, test, and production environments. Additionally, the program is using Behavioral Driven Development (BDD) and t
Posted 19 days ago | Updated 11 hours ago

Senior Software Engineer - CTJ - Poly

Microsoft Corporation

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Reston, Virginia, USA

Full-time

Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft's mission and bold ambitions to ensure that our company and industry i
Posted 18 days ago | Updated 11 hours ago

Sr. Software Engineer TS/SCI Polygraph

Leidos

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Reston, Virginia, USA

Full-time

Description Leidos has an exciting opportunity for a Sr. Software Engineer! *Must have an active TS/SCI Polygraph up front. No exceptions.* You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top-notch agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the
Posted 19 days ago | Updated 7 hours ago

Sr. Software Engineer-Automated Test Framework TS/SCI Poly

Leidos

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Alexandria, Virginia, USA

Full-time

Description Leidos has a new and exciting opportunity for an Automated Test Framework Software 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% c
Posted 19 days ago | Updated 21 hours ago

Senior Software Engineer (.NET & C#)

Accenture LLP

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Washington, District of Columbia, USA

Full-time

At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential of technology and ingenuity for clients across defense, national security, public safety, civilian, and military health organizations. Join Accenture Federal Services, a technology company and part of global Accenture, to do work that matters in a collaborative
Posted 60+ days ago | Updated 11 hours ago

Senior Software Engineer, Intelligence Systems

Aduril Industries

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Reston, Virginia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 30 days ago | Updated 11 hours ago

Senior Software Engineer (Big Data)

Mastercard

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Arlington, Virginia, USA

Full-time

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest po
Posted 60+ days ago | Updated 11 hours ago

Senior Software Engineer - Platform Security

Aduril Industries

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Washington, District of Columbia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c
Posted 60+ days ago | Updated 11 hours ago