442 Results for

Principal Software Engineer Jobs in Capitol Hill, WA

Jobs

New!

Tysons, VA1 day ago

$140,000–$215,000 Per Year

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New!

Falls Church, VA2 days ago

$150,000–$200,000 Per Year

Information collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Our client is a well-funded deep tech company headquartered in Northern Virginia, building a suite of autonomous software reliability and testing products.

New!

Chantilly, VA1 day ago

$161,500–$300,500 Per Year

Enterprise Integration: Engineer and integrate cutting-edge capabilities, seamlessly merging legacy and emerging technologies to deliver robust mission solutions across complex government and DoD environments. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

New!

Washington, DC1 day ago

Remote

This role will involve designing and developing wiring harness systems, including schematic creation, harness architecture, panel layout, developing specifications, selecting key components, and transitioning design to manufacturing. We are seeking a highly experienced and innovative Principal Controls Engineer to lead the development, optimization and implementation of advanced control systems across critical infrastructure products and automation platforms.

New!

Washington, DC1 day ago

Remote

We are seeking a highly skilled, technically proficient and detail-oriented Principal Mechanical Engineer with expertise in metal structures, frame design, pipes and fabrication to support the development of power and cooling infrastructure for data centers. Design and develop mechanical frames, enclosures, and support structures for data center power and cooling products (UPS systems, battery racks, CRAC units, containment systems, LVS, MVS).

New!

Baltimore, MD2 days ago

$127,800–$142,000

The Technical Sales Manager (TSM) provides building-systems knowledge & development/design expertise in support of sales efforts for Energy Efficiency focused Infrastructure Renewal and Building Upgrade & Improvement projects. Bachelor's degree in Mechanical Engineering and 8-years of project development or sales engineering experience developing facilities-based or building infrastructure projects or equivalent combination of education and relevant experience.

New!

Sterling, VA5 days ago

Full-time

SENIOR SOFTWARE ENGINEER (5 positions offered) to design, develop and code applications using Java and Scala; Integrate backend software applications using Postgres and NoSQL databases; Create performance test suite using Jmeter; Implement cloud infrastructure using AWS services; Build Continuous Integration and Continuous Deployment (CI/CD) pipelines using Github, Jenkins and Artifactory. A Bachelor’s degree with 5 yrs of progressively responsible experience will be accepted in lieu of the Master’s degree and 2 years of experience; Any suitable combination of education, training or experience is acceptable.

New!

Annapolis Junction, MDToday

$133,555–$175,000
Full-time
Employee

7 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in realted field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 12 years relevant experience. HII, Mission Technologies has a need for an AI/ML Engineer who will be responsible for designing advanced model architectures, developing machine learning pipelines, and optimizing AI systems for operational deployment in government and mission critical environments.

New!

Columbia, MDToday

Full-time
Employee

Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, software and systems engineering, cyber capabilities, and data science. When extending an offer, Enlighten takes a variety of factors into consideration which include, but are not limited to, the role's function, internal equity and a candidate's education or training, work experience, certifications and key skills.

New!

Columbia, MDToday

Full-time
Employee

You will work closely with other talented engineers to create secure, enterprise-grade AI software solutions, including Model Context Protocol (MCP) servers, reusable AI skills, strict safety guardrails, and other AI framework capabilities that meet the complex needs of our clients. Build Model Context Protocol (MCP) servers and a library of reusable "skills" (function calling/tools) that enable AI models to safely interact with our internal databases, microservices, and external APIs.

New!

Columbia, MDToday

$72,209–$175,204
Full-time
Employee

System design and software implementation of proof-of-concept prototypes incorporating a variety of engineering disciplines: control theory, software development, signal/video processing, pattern recognition, machine learning, artificial intelligence, high performance computing, applied mathematics, network/web services, and visualization. Senior Software Engineer (Software Engineer 3): 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.

Fort Meade, MD30+ days ago

Full-time

Software Engineer (Level 3) Forte Meade, MD (onsite) 5+ year contract role Client is seeking a Senior Software Engineer (Level 3) to support a mission-critical program within the Intelligence Community in an on-site SCIF environment. The ideal candidate will provide architectural leadership, develop reusable deployment frameworks, and mentor engineers while driving secure, scalable, and compliant solutions in a classified environment.

Ashburn, VA30+ days ago

$98,153–$109,324 Per Year

Involves working closely with cross-functional product teams, including product managers, UX designers, systems engineers, and DevSecOps personnel, to deliver high-quality solutions that support mission-critical operations.   . This role provides technical leadership, supports incident response and escalation activities, and collaborates with architects, security teams, and service owners in a mission-critical federal IT environment.  .

Washington, DC7 days ago

$175,540–$175,540 Per Year
Full-time
Employee

Must have 2 years of experience in applying machine learning and AI techniques, particularly with generative AI and LLMs; · Must have 2 years of experience in with Python-based ML frameworks (TensorFlow, PyTorch, JAX, TGI/vLLM, and NumPy); · Must have 2 years of experience in deploying research prototypes as scalable production systems; · Must have 2 years of experience in working with large datasets, data pipelines, and AI models; and. Alternatively, will accept a Master’s degree or equivalent in Engineering, Computer Science, Data Analytics, Information Systems, or related and 2 years of related.

Fort Meade, MD30+ days ago

Full-time

The ideal candidate will collaborate with cross-functional teams to develop deployment pipelines, integrate services, and support scalable Kubernetes-based applications while emphasizing automation, documentation, and code reusability. MD (onsite) 5+ Years Contract Client is seeking a Software Engineer (Level 2) to support a mission-critical program within the Intelligence Community in a classified on-site SCIF environment.

Washington, DC30+ days ago

$96,800–$223,400 Per Year

We’re embarking on ambitious new initiatives such as building new innovative platforms, high performance primitives, frameworks to support OCI developers, and new container runtime that will allow us to run the full variety of OCI services, including our most demanding, high-performance, high-availability services. Your work will focus on building a centralized platform for OCI teams to manage Software BOM, tracking security/vulnerability updates, EOL-detection, building automated guardrails to prevent security exposure and ensure governance and compliance across all of OCI.

Annapolis Junction, MD30+ days ago

Full-time

We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. GliaCell’s Enterprise capabilities include Full-Stack Application Development, Big Data, Cloud Technologies, Analytics, Machine Learning, AI, and DevOps Containerization.

Laurel, MD7 days ago

Full-time

We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. The role emphasizes AI-assisted IDE capabilities, automated code quality workflows, and experimentation with agentic and autonomous systems to support software development tasks.

Annapolis Junction, MD8 days ago

Full-time

New!

Annapolis Junction, MD5 days ago

Full-time

You will lead the technical vision for a new capability, define what done looks like, and work closely with an Integrated Feature Team to carry the work across the full lifecycle. This is a strong fit for an engineer who likes solving hard problems, influencing system direction, and building software that has to perform in real operational environments.

Herndon, VA30+ days ago

For Senior Principal level: A Bachelor's degree with 9+ years of relevant experience; OR a Master's degree with 7+ years of relevant experience; OR a PhD with 4+ years of relevant experience an additional 4 years of experience may be considered in lieu of a degree requirement. For Staff level: A Bachelor's degree with 14+ years of relevant experience; OR a Master's degree with 12+ years of relevant experience; OR a PhD with 9+ years of relevant experience an additional 4 years of experience may be considered in lieu of a degree requirement.

Chantilly, Virginia30+ days ago

Bachelor's degree with 8 years of relevant experience, a Master’s degree with 6 years of relevant experience, a PhD with 4 years of relevant experience, or 12 years of relevant experience in lieu of a degree. Bachelor's degree with 5 years of relevant experience, a Master’s degree with 3 years of relevant experience, a PhD with 1 year of relevant experience, or 9 years of relevant experience in lieu of a degree.

Silver Spring, MD30+ days ago

$80,000–$150,000 Per Year

Capital Technology Group provides expert consulting services software development, digital transformation, human-centered design, data analytics and visualization, and cybersecurity. The quality of our work has been recognized by our partners and peers through our inclusion in the Digital Services Coalition, a group of forward- thinking firms recognized for excellence in delivering IT services.

Herndon, VA30+ days ago

Washington, DC30+ days ago

$170,000–$200,000 Per Year

If you're a seasoned, high-impact engineer and lifelong learner who thrives on solving complex problems, communicating technical concepts clearly, and driving meaningful change in civic tech, we'd love to hear from you! We're looking for a SeniorPrincipal Software Engineer with deep technical expertise, excellent communication skills, and who can serve as a hands-on technical lead on major programs to support our clients.

Mc Lean, VA21 days ago

Remote

$160,000–$187,000 Per Year

A Principal Software Engineer - Front End/ Back End exhibits influential skills to shape future work streams within the current customer base, while maintaining a strategic vision to successfully pursue new business opportunities. In support of various state and city equal pay transparency laws, Ad Hoc job descriptions feature the starting range we reasonably expect to pay to candidates who would join our team with little to no need for training on the responsibilities we've outlined above.

Falls Church, VA27 days ago

We are looking for an experienced Principal Software Engineer who will be responsible for developing and maintaining our flagship product assets. • Experience with the following: o AI Training & Inference: LLM (Large Language Models), Deep Learning, Computer Vision, PyTorch, TensorFlow.

Arlington, VA30+ days ago

$230,000–$368,000 Per Year

Pay Ranges Arlington, Virginia: $230,000 - $368,000 USD Boston, Massachusetts: $230,000 - $368,000 USD Miami, Florida: $200,000 - $320,000 USD Purchase, New York: $230,000 - $368,000 USD Everyone wants easier ways to pay; we invent them. Title and Summary Senior Principal Software Engineer, Data Architecture Overview: Mastercard’s Data & Analytics is seeking a visionary and results-oriented Senior Principal Software Engineer, Data Architecture to lead the design and evolution of Mastercard’s enterprise data architecture.

Chantilly, VA30+ days ago

Possess extensive application development experience, and software engineering and architecture expertise using multiple program languages (e.g., C, C++, C#, ASP.Net, Java, JavaScript, SQL, jQuery, XML, Perl, YAML, and JSON). Bachelor's degree in computer science, engineering, or related technical field; or equivalent experience plus 10+ years of programming experience; or Master’s degree with 8+ years of experience.

Annapolis Junction, Maryland12 days ago

$135,000–$216,000 Per Year

Provides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Commercial Off-the-Shelf (COTS)/Government Off-the-Shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components. Peraton offers enhanced benefits to employees working on our critical National Security programs, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligible to participate in an attractive bonus plan.

Woodlawn, MD21 days ago

$145,000–$175,000 Per Year

Implementation of Graphical User Interface (GUI) using the presentation tier technologies such as AngularJS, ReactJS, Node JS, Type Script, JavaScript, JSP, HTML, CSS, XML, AJAX, and jQuery, Front end development using modern JavaScript and experience with ES13+ features, such as classes, arrow functions, template literals and modules. Demonstrate a strong understanding of the latest trends in Artificial Intelligence (AI) and showcase the ability to apply AI knowledge to enhance or redesign existing system architectures, identifying opportunities where AI-driven solutions can add value, improve efficiency, or enable new capabilities.

Washington DC, DC30+ days ago

By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI. For example, Debugging Azure Networking for Elastic Cloud Serverless is part of our efforts, and we want your experience to contribute to a truly exceptional customer experience.

Annapolis Junction, MD8 days ago

Full-time

Annapolis Junction, MD30+ days ago

Full-time

Or, a Master’s degree in Math, Computer Engineering, Computer Science, or related discipline from an accredited college or university, plus 5 years of experience as an HSE in programs and contracts of similar scope, type, and complexity. We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat.

Annapolis Junction, MD8 days ago

Full-time

Critical: Java threading, SpringBoot, JavaScript, JMS, MongoDB, AWS, Amazon RDS, REST, Docker, Kubernetes, ElasticSearch, Cockroach DB or other RDBMS at similar scale, COOP, Large scale distributed systems with high availability. We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat.

Laurel, MD7 days ago

Full-time

We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. You will be responsible for designing and delivering custom applications, providing data visualization, workflow automation, and mission cognizance for mission critical activities.

Annapolis Junction, MD8 days ago

Full-time

Fort Meade, MD30+ days ago

Experience with containers and container orchestration (e.g., Docker/Kubernetes/OpenShift and GitLab CI) is highly desired, including experience with the following: - microservices and microservice orchestration; - understanding of CI/CD pipelines; -integration of automated testing tools like SonarQube; - implementing automated deployments/failure rollbacks; - deployment to Kubernetes Agile. The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and business management information systems) based upon documented requirements.

Annapolis Junction, MD21 days ago

$215,000–$250,000 Per Year

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, education and certifications as well as Federal Government Contract Labor categories. Develops, maintains, and enhances complex and diverse software systems (e.g., processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets and real-time systems).

Annapolis Junction, MD30+ days ago

Full-time

The engineer will work closely with data scientists and end users to develop analytic tools that support discovery and tradecraft around critical global challenges and operationalize data science within customer environments. Combining operational expertise with an intimate understanding of today’s greatest challenges, we bring our customers the solutions required for success in a complex and multidimensional world.

Washington, DC30+ days ago

$124,600–$161,352 Per Hour

Our values of ‘Do the Right Thing, Excel Together and Put Customers First’ are at the heart of what matters most to us, and our Core Capabilities, ‘Building Trust, Accountability, Effective Communication, Customer Focus, and Proactive Safety & Security’ are what every employee needs to know and do to be most impactful at Amtrak. Amtrak may offer additional incentive and pay programs to recognize and reward our employees, including a short-term incentive bonus based upon factors such as individual and company performance that is commensurate with the level of the position and/or long-term incentive plan compensation.

North Bethesda, MD30+ days ago

You will bring deep expertise and technical leadership to help us build fast, reliable, and intuitive solutions that empower our partners – enabling them to more easily manage jobs, streamline operations, and maximize their growth potential within our manufacturing marketplace. Xometry's digital marketplace gives manufacturers the critical resources they need to grow their business while also making it easy for buyers at Fortune 1000 companies to tap into global manufacturing capacity.

Chantilly, Virginia30+ days ago

$170,000–$190,000 Per Year

The ideal professional will have extensive experience supporting, developing, presenting, and defending highly-secure mobile application systems and play a critcial role in shaping the direction and success of the mission. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Annapolis, MD30+ days ago

You will operate at the intersection of hands-on engineering excellence and strategic technical leadership — contributing directly to complex features while shaping how the entire engineering organization builds, scales, and operates its software. + Cloud and Infrastructure: Deep hands-on experience with AWS or Azure including serverless compute, managed messaging (SQS/SNS/Service Bus), managed databases, and cost optimization.

Herndon, VA30+ days ago

Candidate will perform test-driven software engineering and development activities associated with designing, developing, maintaining, and enhancing analytic systems using an Agile DevSecOps model. Experienced front-end software engineer to develop services using modern techniques such as REST, JSON, Python, JavaScript Web UI frameworks (e.g., JQuery, Angular, React), and Docker.

Washington, DC30+ days ago

$193,100–$323,500 Per Year

In this role, you will work across teams and functions to define architectural direction, tackle complex engineering challenges, and deliver best-in-class solutions that help our customers derive actionable intelligence for their IT Operations (ITOps). + Lead and own the architectural vision and long-range technical direction for our on-prem ITSI solution, collaborating with executive and engineering leads to ensure alignment with Splunk’s broader Observability strategy.

Dulles, VA30+ days ago

Argo Cyber is supporting a U.S. Government customer on a large mission critical development and sustainment program to sustain and operate a network operations environment, including introducing new cyber capabilities to address emerging threats. Candidates selected for employment in positions requiring access to sensitive or classified information may also be subject to additional U.S. Government background investigations and security adjudication processes, including DHS Entry on Duty (EOD) suitability or equivalent federal clearance requirements.

Annapolis Junction, MD7 days ago

Full-time

We also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. You will be expected to provide guidance and vision as you work with mission stakeholders and software engineers to specify, develop, integrate, and test new workflows aided by AI/ML technologies.

Annapolis Junction, MD11 days ago

$240,000–$250,000 Per Year

Bachelor’s degree in a technical discipline4 additional years of experience as a software engineer may be substituted for a degree. Disclaimer: The salary range provided is an estimate based on current market conditions and may be adjusted based on factors such as experience, skills, and qualifications.

Arlington, VA30+ days ago

Candidates will demonstrate practical experience designing, developing, and deploying tools intersecting command and control, persistence, and networking. Zetier is seeking Principal CNO Software Engineers to develop operationally critical cyber capabilities.

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Principal Software Engineer Jobs in Capitol Hill, WA

Jobs

Senior Backend EngineerJobot

Senior Software EngineerJobot

Scientist, Software EngineerL3Harris Technologies

Principal Electrical Controls Engineer - Data Center InfrastructureJABIL CIRCUIT, INC

Principal Mechanical Integration Engineer – DCI Pipes, Frames and Structures (REMOTE)JABIL CIRCUIT, INC

Principal Technical Sales Manager - Federal Engineer ProjectsConstellation Energy

Senior Software EngineerTeknowleap, Inc

Principal AI/ML Engineer - 27560Company Confidential

Senior Software Engineer (Hybrid) - 27718Company Confidential

Senior Software Engineer (Hybrid) - 28172Company Confidential

Software Engineer - Multiple Levels - 26302Company Confidential

Lead Principal Software Engineer = Pos: 795 - Software Engineer (SWE) - Skill Level 3Metasys Technologies, Inc.

Principal Senior Software Engineer9th Way Insignia

Senior Software Development Engineer (Multiple Positions), WAS302109Tesla, Inc.

Lead Principal Software Engineer = Pos: 794 - Software Engineer (SWE) - Skill Level 2Metasys Technologies, Inc.

Principal Software Engineer- OCI Software EcosystemOracle

Principal Software EngineerGliaCell Technologies

Principal Software Engineer (AI - Assisted Developer Tooling)GliaCell Technologies

Principal Software Engineer (Partial Telework)GliaCell Technologies

Principal Software EngineerIntelliforce-IT Solutions Group

Senior Principal/Staff Cyber Software Engineer (TS/SCI)SHLD, Inc.

Principal Cyber Software Test EngineerVTG

Principal Software EngineerCapital Technology Group

Senior Principal/Staff Cyber Software Engineer CI PolySHLD, Inc.

Senior Principal Software EngineerCapital Technology Group

Principal Software EngineerAd Hoc

Principal Software EngineerKastle Systems

Senior Principal Software Engineer, Data ArchitectureMasterCard

Principal Software Engineer, Full StackJSI Telecom

Principal Software Engineer TS/SCI w PolyPeraton

Principal Software EngineerAmatriot Group, LLC

Principal Software Engineer (Networking) - PlatformElastic

Principal AWS Software Engineer (Partial Telework)GliaCell Technologies

Principal HPC Software EngineerGliaCell Technologies

Principal Full Stack Software Engineer (Partial Telework)GliaCell Technologies

Principal Full Stack Software EngineerGliaCell Technologies

Principal Python Software Engineer (Partial Telework)GliaCell Technologies

Principal Software EngineerThemis Insight

Principal Software EngineerEnvision Innovative Solutions

Principal‑Level Software Engineer (Java, Python)IDS International

Principal Software Engineer - 90402969 - Onsite - Washington DC, Wilmington DE, Philadelphia PA (Washington, DC, US, 20001)Amtrak

Principal Software EngineerXometry

Principal Cyber Software Engineer (Mobile)Markon

Principal Engineer, SoftwareVerint Systems, Inc.

Principal Cyber Software Engineer (Front End/UI-Focused) CI PolySHLD, Inc.

Principal Software Engineer - ITSICisco

AWS Full Stack Developer Software Engineer - Principal IArgo Cyber Systems

Principal CNO Software EngineerGliaCell Technologies

Principal Backend Software Engineer (Some Telework)Shield Consulting Solutions

Principal CNO Software EngineerZetier

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