Senior Engineer Jobs in District of Columbia

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Sr. AI Engineer

eSolutionsFirst, LLC

•

McLean, Virginia, USA

Full-time

Description: We re building smart, scalable, AI-native products and we re looking for a Senior Python Developer who s excited to shape the next generation of intelligent systems. You ll work at the intersection of backend engineering, LLM agents, and automation, using tools like LangChain, OpenAI, and FastAPI to ship real-world features fast. Design & integrate LLM agents using frameworks like LangChain, AutoGen, or HaystackDeploy apps to AWS/Azure using Docker, Kubernetes, TerraformCollaborate
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Posted 5 days ago

FLEX Senior Software Engineer

Marriott International

•

Bethesda, Maryland, USA

Full-time

Job Description This is a temporary position. JOB SUMMARY We are seeking an exceptional engineering leader to drive the design, development, and delivery of large-scale enterprise applications. The ideal candidate is product-focused, passionate about solving complex challenges, and experienced in leading architectural and innovative service solutions for Marriott's eCommerce platform. Key responsibilities include: Leading the design and implementation of advanced services and frameworks to
Posted 47 days ago | Updated 4 hours ago

Senior Firewall Engineer

Tria Federal

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Suitland-Silver Hill, Maryland, USA

Full-time

Who We Are: Tria Federal delivers digital services and technology solutions that support the health and safety of veterans, service members and civilians. For two decades, federal agencies have relied on Tria companies to advance their critical missions and modernize their systems, so that they can uphold their commitment to the American people. Today, we are pushing the boundaries of possibility through partnerships and investments in artificial intelligence and emerging technologies, developi
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Posted 1 day ago | Updated 1 day ago

Senior Lead Software Engineer, Full Stack (Bank Tech)

Capital One

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McLean, Virginia, USA

Full-time

Senior Lead Software Engineer, Full Stack (Bank Tech) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data with emerging technologies. As
Posted 57 days ago | Updated moments ago

Senior DevSecOps Engineer

Aventine software

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Tysons, Virginia, USA

Full-time

We have an urgent opening for a Senior DevSecOps Engineer and need resumes immediately. This is a leadership role, and we re looking for someone who can: Role :: Senior DevSecOps EngineerLocation::Work onsite 4 days a week in Tysons Corner, VACommunicate effectively with the client (Really important)Job Type: Full-time EmploymentSalary :: Salary Range: $130K $150K/yr +benefits. Job description Client seeks a Senior DevOps Engineer with a strong AWS background to help support our federal clients.
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Posted 1 day ago

Senior Reliability Engineer

Washington Metroplitan Area Transit Authority

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New Carrollton, Maryland, USA

Full-time

THIS JOB OPENING IS BEING USED TO FILL CURRENT AND FUTURE VACANT POSITIONS. MINIMUM QUALIFICATIONS Education Bachelor's Degree in reliability, electrical, mechanical or related engineering field. In lieu of a Bachelor's degree, a High School Diploma or GED and four (4), years of experience in an electrical or mechanical maintenance role in the transportation field may be considered. Experience Minimum of five (5) years of demonstrated experience in a maintenance, maintenance supervision, or eng
Posted 3 days ago | Updated 5 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 35 days ago | Updated 4 hours ago

Senior Engineer - Power Delivery

Olsson Associates Inc

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Arizona, USA

Full-time

Company Description We are Olsson, a team-based, purpose-driven engineering and design firm. Our solutions improve communities, and our people make it possible. Our most meaningful asset is our people, and we are dedicated to providing an environment where they can continue to learn, grow, and thrive. Our entrepreneurial spirit is what has allowed us - and will continue to allow us - to grow. The result? Inspired people, amazing designs, and projects with purpose. Job Description We are seek
Posted 47 days ago | Updated 4 hours ago

Senior O365 Engineer

Synapse Business Systems

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Washington, District of Columbia, USA

Full-time

Senior O365 Engineer Location: WASHINGTON, DC, United States Work Location:Hybrid 3 days onsite in Washington, DC and 2 days remote (Wednesday is a mandatory onsite day) - Non-negotiable Interview Process: 1st Round: Teams Video Interview 2nd Round: In-Person Interview at the client site - Non-negotiable Security Requirement:Candidatemust be eligible to obtain And/OR hold a Public Trust clearance Job Description: As a senior member of the O365/Windows team, you will work within the O365/Wi
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Posted 4 days ago | Updated 4 days ago

Senior Quality Assurance Engineer

RADGOV INC

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Washington, District of Columbia, USA

Third Party, Contract

Onsite Role and Need locals Qualifications: Bachelor s degree in Computer Science or a related degree in the IT field or equivalent experience. At least seven years of experience developing, automating and executing test cases and test scripts according to softwaredevelopment lifecycles (SDLCs), including DevOps, Agile, Lean, Iterative, or Waterfall. Able to plan, lead, and report on testing efforts. Demonstrated ability to validate requirements for testability and transfer this knowledge to ot
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Posted 1 day ago

Senior Mechanical Engineer - Energy Solutions - CMTA

Legence Therma LLC

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Fairfax, Virginia, USA

Full-time

CMTA, a Legence company CMTA is one of the fastest growing engineering firms in the U.S. with nationally recognized expertise in sustainable, high performance building engineering. We are a collaborative, competitive, innovative, and energetic group of engineers and team leaders who incorporate a holistic approach towards consulting engineering, performance contracting, and zero energy projects. We focus on finding engineers whose personalities lead them to excellence, and we provide exceptiona
Posted 16 days ago | Updated 4 hours ago

Senior Lead Software Engineer, Back End (Java/Python/AWS)

Capital One

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McLean, Virginia, USA

Full-time

Senior Lead Software Engineer, Back End (Java/Python/AWS) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who love to solve real problems and meet real customer needs. We are seeking Back End Software Engineers who are passionate about marrying data with emerging techno
Posted 45 days ago | Updated moments ago

Senior Front End Engineer

Booz Allen Hamilton

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McLean, Virginia, USA

Full-time

Job Number: R0223275 Front End Engineer, Senior The Opportunity: At Booz Allen Hamilton, we are innovating through our emerging Product business to deliver cutting-edge AI-driven cybersecurity solutions. We are seeking a Senior Front End Engineer to join our internal Product engineering team. This role is center ed on transforming UI / UX designs into high-performance, user-centric interfaces within our React-based application. You will integrate the front end with API Gateway-based micro-servi
Posted 5 days ago | Updated 5 hours ago

Senior DevSecOps Engineer

Booz Allen Hamilton

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McLean, Virginia, USA

Full-time

Job Number: R0223276 DevSecOps Engineer, Senior The Opportunity: At Booz Allen, we are advancing our emerging product business by building innovative AI-driven solutions, including agentic cybersecurity products. We are seeking a Senior DevSecOps Engineer to join our internal product engineering team. This role focuses on establishing and operating robust infrastructure for our agentic products, with an emphasis on Infrastructure as Code ( IaC ) and integrating security into DevOps practices. Yo
Posted 5 days ago | Updated 5 hours ago

iOS Developer (Senior Software Engineer iOS)Location: Maclean VA (Onsite )

Virtuous Tech Inc

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McLean, Virginia, USA

Contract

iOS Developer (Senior Software Engineer iOS) Location: Maclean VA (Onsite ) Duration: 12 months Experience: 12+ years Job Description: We are seeking a Senior Software Engineer iOS to play a key role in designing, developing, and maintaining the iOS platform for our Client Auto Navigator application. In this role, you will leverage your expertise in iOS development to create high-quality, engaging customer experiences while collaborating with cross-functional teams. You will also mentor junior
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Posted 60+ days ago | Updated 31 days 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 5 days ago | Updated 21 hours ago

Senior DevSecOps Engineer

SAIC

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Arlington, Virginia, USA

Full-time

Job ID: 2508033 Location: ARLINGTON, VA, US Date Posted: 2025-07-29 Category: Software Subcategory: DevSecOps Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: Interim Top Secret Clearance Level Must Be Able to Obtain: Top Secret Potential for Remote Work: Yes Description SAIC is seeking an experienced DevSecOps (DSO) Engineer to support our Department of the Air Force customer in both development and engineering practice, and site reliabilit
Posted 4 days ago | Updated 2 hours ago

Senior Data Engineer

Jobot

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Bethesda, Maryland, USA

Full-time

Work on data driven strategies to apply AI and ML to novel drug discovery, at the forefront of biotech innovation. This Jobot Job is hosted by: Charles Simmons Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $140,000 - $180,000 per year A bit about us: Advancements in AI and drug discovery are creating more candidate drugs than the industry can progress because of the high cost and time of clinical trials. Recognizing that this development
Posted 1 day ago | Updated 1 hour ago

Senior RF Engineer

System One

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Rockville, Maryland, USA

Full-time

Senior RF Engineer On-Site, Rockville, MD Direct Hire Salary Range: $130,000 to $170,000 annually, commensurate with skills and experience Excellent Benefits ALTA IT Services is staffing a direct hire opening for a Senior RF Engineer to support our client, a global leader in satellite communication systems, providing innovative and reliable solutions that empower connectivity worldwide. This is an on-site position based in Rockville, MD. JOB SUMMARY Senior RF Engineer with 7+ years of experience
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Posted 3 days ago | Updated 2 hours ago

Senior Manager, Software Engineer

Capital One

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McLean, Virginia, USA

Full-time

Senior Manager, Software Engineer Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data with emerging technologies. As a Capital One Sr. M
Posted 10 days ago | Updated moments ago