Fredericksburg • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Fredericksburg • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Fredericksburg • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Fredericksburg • 50 milesRemote · Hybrid · Onsite · Field · All Environments
3mo
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Blockchain Developer
Manassas or Brussels
$67k-$124k/yr OnsiteFull Time
2+ YOEBachelor's or Master's in CS/Software Engineering; 2+ years blockchain experience; Ethereum/Solidity, Hyperledger Besu, Corda; cryptography, distributed systems; front-end/back-end languages; cloud and containers; REST APIs, gRPC, microservices; Git/CI/CD; strong communication.
Solidity, Ethereum, Hyperledger Besu, Corda, Cosmos, Canton, PKI, REST, gRPC, Git, CI/CD, JavaScript/TypeScript, Python, Go, Java, C++, AWS, Azure, Google Cloud, Docker, Kubernetes
2mo
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Blockchain Developer
Manassas, Virginia, United States
$122k-$226k/yr OnsiteFull Time
10+ YOE10-12 years in systems development; strong blockchain, smart contracts, and distributed systems skills.
Hardhat, Truffle, Foundry, Solidity, Rust, JavaScript, TypeScript, Go, Python
1d
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Senior Python Developer
Chantilly, Virginia, United States
$121k-$189k/yr OnsiteFull Time
Active TS/SCI clearance with CI polygraph ability, US citizenship, solid Python development, full-stack experience (Django/React), ability to rapidly prototype, and degree with extensive experience per posted equivalencies.
Python, Django, React, JavaScript, Docker, Bash, PowerShell, PostgreSQL, SANS SIFT Workstation
2mo
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Senior Solutions Engineer, Banking and Capital Markets
New York or Chicago or Boston or Denver or Miami or Atlanta or Canada or Toronto or Washington or United States
$111k-$269k/yr RemoteFull Time
3+ YOE3+ years customer-facing delivery or solutions engineering experience; hands-on blockchain engineering, Solidity and EVM experience; proficiency with middleware, APIs, and languages like JavaScript/TypeScript/Go/Rust/C++; proven PoC-to-production delivery.
Solidity, EVM, JavaScript, TypeScript, Go, Rust, C++, AWS, RPC
3w
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Senior Software Engineer
Tysons, Virginia, United States
$113k-$148k/yr HybridFull Time
6+ YOEBachelor's in CS or equivalent experience, 6+ years professional software development, strong frontend and backend skills, OOP/SOLID, API design, database fundamentals, testing, debugging, and mentoring experience.
C# .NET, SQL Server, Kafka, Ember.js, React, Node.js, Python, Kubernetes, Azure, Redis, iOS, Android, Git, CI/CD, JSON, YAML, Docker, GraphQL, REST
1mo
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Senior Software Engineer — C# / WPF
Arlington, Virginia, United States
OnsiteFull Time
5+ YOEBachelor's in CS, 5+ years professional software development (3+ years .NET desktop), expert C#/.NET, deep WPF/XAML and multithreading, profiling/optimization, MVVM and SOLID, mentoring and Agile experience.
C#, .NET, WPF, XAML, TPL, async/await, FFmpeg, C/C++, P/Invoke, SignalR, WebSockets, REST APIs, MVVM
4d
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Senior Cryptocurrency Engineer
Washington, District of Columbia, United States
RemoteFull Time
5+ YOE5+ years in blockchain engineering or crypto forensics, bachelor’s in CS/Cybersecurity/Data Science, experience with blockchain analysis platforms and Solidity/EVM, TS/SCI eligibility, strong writing and analytic skills.
Chainalysis Reactor, TRM Labs, CipherTrace, Solidity, EVM, blockchain APIs
3mo
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Senior Software Engineer - Fuzzer
Vienna, Virginia, United States
OnsiteFull Time
5+ YOE5+ years in complex systems; strong Rust, Go, or C++; solid CS fundamentals; ability to design interfaces; passion for software testing and correctness.
Rust, Go, C++
3mo
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Senior Solid-State Laser Engineer / Technical Lead
Herndon, Virginia, United States
OnsiteFull Time
5+ YOE5+ years in solid-state laser development; leadership in technical efforts or small teams; expertise in laser resonator design, gain media physics, nonlinear optics, and frequency conversion; Zemax modeling; U.S. citizenship and ability to obtain security clearance.
Zemax, Optical Modeling Tools
1w
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Senior Engineer
Ashland or Cary
OnsiteFull Time
8+ YOEPE required, BS in Civil/Environmental/Mechanical Engineering, 8+ years solid waste engineering experience, project management, design and permitting, strong communication and technical skills.
AutoCAD, Microsoft Office Suite
1w
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Senior Engineer
Ashland, Virginia, United States
OnsiteFull Time
8+ YOEPE required, Bachelor\u0002s in Civil/Environmental/Mechanical Engineering, 8+ years solid waste engineering experience, project design/permitting, project management, client communication, AutoCAD and MS Office Suite proficiency.
AutoCAD, MS Office Suite
2mo
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Blockchain Test Engineer - Hybrid
Manassas or Brussels
$67k-$124k/yr HybridFull Time
Bachelor's degree; blockchain/testing experience; programming skills; test automation; CI/CD familiarity.
Selenium, Playwright, Jest, Truffle, Hardhat, Jenkins, GitLab CI, Python, JavaScript, Go, Java, Solidity
3w
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Technical Projects Engineer - Fredericksburg, VA
Fredericksburg, Virginia, United States
$60k-$65k/yr OnsiteFull Time
1+ YOEBachelor's in electrical/mechanical or related; 1 year technical/business experience; 1 year intermediate Microsoft Word/Excel/Outlook; SAP, CAD/Solid Edge preferred; strong English communication and project management skills.
Microsoft Word, Microsoft Excel, Microsoft Outlook, SAP, CAD, Solid Edge
1mo
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Scientist III, Analytical R&D
Chantilly, Virginia, United States
OnsiteFull Time
3+ YOEMaster's (5+ yrs) or PhD (3+ yrs) in chemistry/analytical chemistry, experience in small-molecule solid oral dosage analytical development, hands-on HPLC/GC/KF/MS/dissolution/spectroscopy, GMP knowledge, supervisory experience, able to stand long shifts and lift 40 lbs.
HPLC, GC, KF, MS, dissolution, spectroscopy, particle size
3w
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Solid Rocket Motors Engineering, Principal
Arlington or Cumberland or Huntsville or Orlando or Troy
$151k-$301k/yr RemoteFull Time
15+ YOEBachelor's in aerospace/mechanical engineering, 15+ years SRM/propulsion experience, CAD/FEA/CFD proficiency, DoD Secret clearance ability, strong thermodynamics/structural knowledge, mentoring and testing experience.
CAD, Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), PLM
2mo
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Formulation Scientist/Sr. Scientist, R&D (Solid Orals)
Chantilly, Virginia, United States
OnsiteFull Time
2+ YOEPhD or MSc in pharmaceutical sciences with relevant years of experience; strong skills in QbD, DOE, and regulatory compliance.
HPLC, Spectrophotometry, Dissolution, Viscometer, Wurster Coating, Tablet Coating, Compression, Blending, Encapsulation, DOE