Remote Solidity Developer Jobs in Washington, DC

Description of Tasks to be Performed:    

As the Senior Cryptocurrency Engineer, you will serve as the primary technical authority for blockchain analysis, digital‑asset tracing, cyber‑enabled financial investigations, and cryptocurrency‑related criminal cases. You will apply your advanced analytical expertise and subject‑matter knowledge to evaluate complex blockchain ecosystems, decentralized‑finance platforms, and illicit‑finance activity.

Within your mission team, you will lead the technical direction of blockchain and digital‑asset investigations, working alongside forensic SMEs and developers to integrate cryptocurrency intelligence into broader investigative and cyber‑operations workflows.

You will design and build investigative tools, perform high‑confidence tracing operations, and assess emerging payment technologies to identify criminal exploitation patterns. You will advise investigators and mission partners on blockchain artifacts, digital‑asset seizure procedures, and proper chain‑of‑custody for decentralized evidence.

Drawing on your substantial experience, you will independently plan and execute technical goals, shape analytic and investigative strategy, and provide mentorship or guidance to others when needed.

Work location: Work is mostly remote, with occasional visits to customer and/or corporate locations in DC/Northern Virginia. Applicants who do not currently reside within commuting distance to these locations should describe how they would satisfy any onsite requirements. Remote status is subject to change at the customer’s direction, but is expected to continue. 

Responsibilities

• Conduct blockchain analysis and cryptocurrency tracing across Bitcoin, EVM chains, privacy coins, DeFi platforms, and cross‑chain ecosystems.
• Develop algorithms, methods, and analytic workflows supporting seizure warrants, forensic audits, and financial‑crime investigations.
• Analyze smart contracts, Solidity bytecode, token behavior, mixing/tumbling activity, anonymity‑enhancing technologies, and illicit‑finance patterns.
• Conduct financial‑cyber investigations using complex business records, transaction flows, and digital‑asset movement patterns.
• Perform cyber target development, including identification and analysis of cyber‑enabled criminal networks, ransomware actors, intrusion sets, and threat‑finance structures.
• Evaluate emerging payment technologies and assess their risk for criminal exploitation or terrorist financing.
• Conduct research and analysis on cybercrime methods, money‑laundering typologies, obfuscation techniques, and cyber‑enabled financial threats.
• Provide analytical and evaluative services to analyze cyber evidence, tools, services, and investigative technologies.
• Conduct cyber‑forensic acquisition, chain‑of‑custody procedures, and digital‑evidence analysis for computers, mobile devices, and storage media.
• Apply investigation techniques to gather, preserve, and present digital evidence suitable for courtroom use.
• Assist with open‑source research, deep‑web/dark‑web analysis, social‑media analysis, electronic evidence review, and intelligence‑driven investigative support.
• Produce detailed investigative reports, analytic products, visualizations, and finished professional intelligence.
• Collaborate with cyber, forensic, financial‑crime, threat‑finance, and intelligence teams to support major federal investigations.
• Research emerging blockchain technologies, privacy solutions, exploit techniques, and evolving crypto‑criminal methodologies.
• Develop, deliver, and lead formal training events for government and cross‑agency partners.