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Freelance Full Stack Software Engineer Jobs in Washington

UNISSANT

Full Stack Software Engineer

Herndon, VA · On-site +1

We are seeking a Full Stack Software Engineer to join our team and support our Department of War (DoW) customer. The ideal candidate is a versatile software engineer who enjoys building modern, user ...

Unissant

Full Stack Software Engineer

Herndon, VA · On-site

$111K - $183K/yr

We are seeking a Full Stack Software Engineer to join our team and support our Department of War (DoW) customer. The ideal candidate is a versatile software engineer who enjoys building modern, user ...

Unissant, Inc.

Full Stack Software Engineer

Herndon, VA · On-site

We are seeking a Full Stack Software Engineer to join our team and support our Department of War (DoW) customer. The ideal candidate is a versatile software engineer who enjoys building modern, user ...

Unissant

Full Stack Software Engineer

Herndon, VA · On-site

$111K - $183K/yr

We are seeking a Full Stack Software Engineer to join our team and support our Department of War (DoW) customer. The ideal candidate is a versatile software engineer who enjoys building modern, user ...

PerformYard

Full Stack Software Engineer

Arlington, VA · Remote

This is a 100% Remote position - Now & Forever Requirements As a Full-Stack Software Engineer, you will innovate, design, and develop end-to-end product capabilities that stretch from our React-based ...

PerformYard

Full Stack Software Engineer

Arlington, VA · On-site +1

This is a 100% Remote position - Now & Forever Requirements As a Full-Stack Software Engineer, you will innovate, design, and develop end-to-end product capabilities that stretch from our React-based ...

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Freelance Full Stack Software Engineer information

What are the key skills and qualifications needed to thrive as a freelance full stack software engineer?

To thrive as a Freelance Full Stack Software Engineer, you need strong proficiency in both front-end (e.g., HTML, CSS, JavaScript) and back-end (e.g., Node.js, Python, databases) development, often supported by a relevant degree or portfolio of work. Familiarity with version control systems like Git, cloud platforms such as AWS or Azure, and frameworks like React and Django is typically required. Exceptional communication, self-motivation, and time management skills help you manage client relationships and deliver projects independently. These competencies ensure you can handle diverse project requirements, maintain client trust, and consistently deliver high-quality, end-to-end solutions.

What are some common challenges faced by freelance full stack software engineers, and how can they be managed?

Freelance full stack software engineers often navigate challenges such as managing client expectations, balancing multiple projects, and keeping up with rapidly evolving technologies. Communication is key—setting clear project milestones and maintaining regular updates helps ensure alignment with clients. Additionally, effective time management and continuous learning are vital to juggling diverse tasks and staying competitive in the field. Building a reliable professional network can also help with referrals and collaborative opportunities.

What does a freelance full stack software engineer do?

A Freelance Full Stack Software Engineer is an independent contractor who designs, develops, and maintains both the front-end (client-side) and back-end (server-side) components of web or software applications. They work with a variety of programming languages, frameworks, and tools to build complete, functional products for clients or companies. Their responsibilities often include gathering project requirements, coding, debugging, deploying applications, and sometimes managing databases or cloud infrastructure. Freelance full stack engineers have the flexibility to choose their projects and clients, often working remotely or on a contract basis.
What are the most commonly searched types of Full Stack Software Engineer jobs in Washington? The most popular types of Full Stack Software Engineer jobs in Washington are:
What are popular job titles related to Freelance Full Stack Software Engineer jobs in Washington? For Freelance Full Stack Software Engineer jobs in Washington, the most frequently searched job titles are:
What job categories do people searching Freelance Full Stack Software Engineer jobs in Washington look for? The top searched job categories for Freelance Full Stack Software Engineer jobs in Washington are:
What cities in Washington are hiring for Freelance Full Stack Software Engineer jobs? Cities in Washington with the most Freelance Full Stack Software Engineer job openings:
Freelance Full Stack Software Engineer jobs near you
Infographic showing various Freelance Full Stack Software Engineer job openings in Washington as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

Full-Stack Software Engineer

Bridge Core (BCore)

Reston, VA • On-site

$165K - $195K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 29 days ago

Job description

Overview
Full-Stack Software Engineer
Reston, VA (Hybrid)
TS/SCI with Poly
At Bcore, our strength comes from how we deliver impact to the mission. Whether it's architecting critical IT solutions, producing actionable intelligence, or developing cutting edge technology, we succeed because of the expertise, collaboration, and agility of our teams. Our Mission Services division combines enterprise IT, cloud solutions, DevSecOps, systems engineering, software development, and operational support.Bcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions.
Do you want to join a team that is building tailored technical solutions to modernize our government's mission and our client's business? Do you have a desire to change how people work? Are you interested in helping to protect our nation's cyber interests? Join our growing team supporting customer missions as a Full-Stack Software Engineer in Reston, VA (Hybrid).
Responsibilities
Responsibilities
We are looking for a full-stack software engineer to build and extend an offline, edge AI data-triage application through a rapid prototype and its redeployment as mission needs evolve. The application runs entirely on a single, standalone device with no network connection. Technical tasks include:
  • TS/SCI with polygraph
  • Building and extending the offline, standalone application (Python/Flask) that ingests documents, images, audio, and video and runs locally hosted AI models to translate, summarize, extract entities, and catalog content
  • Developing the browser-based local user interface: ingest dashboard, tag filters, search, and a natural-language question interface
  • Integrating and operating on-device AI/ML components, including local open-weight language models, retrieval-augmented generation, a vector store and embeddings, speech transcription, and multimodal vision models
  • Building the controlled sandbox and data-security features: malware scanning and rule-based detection, file-type allow-listing, a quarantine landing zone, unprivileged containers with read-only mounts, and ephemeral teardown on shutdown
  • Packaging the application for standalone, offline installation on a zero-trust Linux laptop baseline, including single-package and side-load delivery across enclave boundaries
  • Maintaining a self-hosted CI/CD pipeline and cutting versioned releases that record model and behavior changes
  • Validating near-real-time processing against edge data loads from 128 GB to 1 TB across text, image, audio, and video
  • Supporting redeployment and iteration of the capability after the prototype as requirements change

Qualifications
Required Qualifications:
  • Front-end web development with JavaScript, HTML, and CSS for browser-based interfaces
  • Strong Python, including backend web development (Flask or equivalent)
  • Containerization with Docker and comfort working on Linux (Rocky Linux or the RHEL family)
  • Experience integrating AI/ML or large language model components into applications
  • Experience with data workflows using relational databases and/or vector stores

Desired Qualifications:
  • Local or offline LLM tooling (e.g., Ollama) and retrieval-augmented generation (RAG)
  • Vector databases (e.g., ChromaDB) and sentence embeddings (e.g., all-MiniLM)
  • Speech-to-text (Whisper / faster-whisper) and multimodal vision models
  • Text extraction (Apache Tika) and metadata standards (Dublin Core)
  • Application security and sandboxing: ClamAV, YARA, unprivileged containers, encryption, role-based access control
  • Self-hosted CI/CD and Git for source control
  • Building for air-gapped, disconnected, or edge environments and standalone portable devices

What you can expect from us
  • The expected salary range within the Washington, DC metropolitan area is: $165,000 - 195,000. Final compensation is unique to each individual and will be determined based on factors such as experience, education, geographic location, and contractual requirements. This is not a guarantee.
  • Benefits include Health/Dental/Vision, 401(k), Paid Time Off, STD/LTD/Life Insurance/Voluntary Life Insurance, Stipends, Referral Bonuses, and more.

BCore is proud to be an equal opportunity workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, sexual orientation or any other characteristic protected by law.

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