Network Infrastructure Engineer - AI Data Platform

Location: Hybrid - Ashburn

Compensation: $125K - $150K

Join a lean, technical team building the critical infrastructure that delivers massive amounts of web data to companies training the world’s most powerful AI models. The client operates a vast distributed crawler, granting unique access to high-quality public web data at a global scale. Their work involves building advanced pipelines for ingesting, segmenting, and annotating billions of videos, transcripts, and audio files, directly powering dataset creation for frontier AI labs.

The client is looking for a talented Network Infrastructure Engineer with significant experience in infrastructure and network architecture design. You will be responsible for building and maintaining the robust physical and cloud infrastructure that powers their AI-driven platform. Your work will directly impact the efficiency, security, and performance of our systems at massive scale.

This role requires deep expertise across network architecture, physical deployment, cloud services, and automation (Infrastructure as Code).

Senior Infrastructure Engineer - High-Performance Blockchain Services

Location: New York, San Francisco (Office)

Compensation: $200K - $400K

Join the Infrastructure & Platform team at a high-growth crypto derivatives exchange that is rapidly capturing market share in a multi-billion dollar annual sector. Our clients current focus is on building a multi-asset margin feature that leverages blockchain technology to allow users to post variable forms of collateral, which is essential as multi-asset margin comprises over 86% of crypto accounts.

You will play a pivotal role in designing, architecting, and deploying highly reliable, scalable blockchain services with lightning-fast performance. You will lead the development of mission-critical core infrastructure that powers their products, enabling them to bring financial venues directly to the user.

The Senior Infrastructure Engineer will be responsible for building the core components of a high-throughput, low-latency distributed system, focusing heavily on performance and cryptographic integrity.

Smart Contract Engineer (Rust) - High-Performance DeFi Infrastructure

Location: PST-CAT preference

Compensation: Competitive

We are building the next generation of Decentralized Finance (DeFi) liquidity infrastructure on the Solana blockchain. We are solving a critical industry problem where reliance on over-collateralized lending leads to inefficient capital use, fragmented systems, and unnecessary liquidation risks.

Our solution introduces under-collateralized borrowing, programmable margin accounts, and composable on-chain strategies ("Recipes"), all built with high-performance Rust smart contracts. We are redefining how liquidity moves in DeFi: faster, safer, and more capital-efficient.

We are looking for a highly capable Smart Contract Engineer (Rust) to join our core engineering team and shape the technical backbone of our protocol. You will design, build, and optimize Rust-based smart contracts that power our DeFi infrastructure, working closely with product and protocol teams to create scalable, secure, and innovative financial primitives.

As a core contributor, you will take full ownership of your work, from concept and research to mainnet deployment and maintenance.

Senior Full Stack Engineer - Decentralized Finance Security

Location: Remote USA - NYC preferred - (NOT PST) and Europe, but must have a 5+ hour overlap with EST timezone for this role

Remote | Full-time

Compensation: $144K - $164K

Our client provides the first automated, on-chain economic security system designed to enable crypto protocols to optimize risk management and capital efficiency while safeguarding user funds. By analyzing protocol mechanics and scenario implications through world-class custom EVM simulations, the platform provides actionable insights trusted by leading decentralized finance (DeFi) protocols to secure billions of dollars in assets.

The organization is seeking a proactive and results-driven Senior Full Stack Engineer to join the Oracle Team. Reporting directly to the Oracle Team Lead, the successful candidate will play a critical role in building data-driven dashboards and infrastructure to support risk analysis. This role requires close collaboration with research and protocol teams to deliver high-quality frontend and backend components that power essential security insights across multiple blockchains.

Key Responsibilities

VP of Business Development, Africa - Blockchain Wallet Infrastructure

Location: Nigeria or South Africa (Remote-first, Office Optional)

Compensation: $80K - $120K

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of wallet infrastructure for the next financial era. We are hiring a VP of Business Development to spearhead our regional expansion and establish our company as the trusted partner for financial institutions and fintechs across African markets.

Reporting to the Head of Americas, you will own the go-to-market strategy in Africa, driving revenue, building strategic partnerships, and guiding clients through the deployment of our cutting-edge wallet platform inside their existing systems. This role demands a powerful blend of strategic leadership and hands-on enterprise sales execution.

As the senior representative in Africa, you will blend high-level strategy with execution, focusing on accelerating market penetration and securing complex enterprise accounts.

Founding Full-Stack Engineer (iOS & Web3)

Location: New York (Hybrid)

Compensation: $170K - $220K

We are building a first-of-its-kind accountability protocol designed to bridge the gap between social coordination and blockchain technology. We are looking for an exceptional Founding Full-Stack Engineer to lead the development of our consumer-facing native iOS application.

In this role, you won't just be executing tickets; you’ll have a "founding-level" seat at the table, working directly with our co-founders (alumni of Apple, Google, Dragonfly, and Arbitrum) to shape the product's DNA. You will be responsible for shipping high-quality, production-ready Swift code and designing the backend infrastructure that makes complex on-chain interactions feel invisible to the end user.

Key Responsibilities:

Position Overview: The Administrative Coordinator will support the Owner’s Engineer (OE) team working in Sofia on the Kozloduy nuclear new-build project. The role is essential in ensuring smooth coordination between the OE team, local stakeholders, the Client, and project subcontractors. The selected candidate will provide administrative, logistical, and communication support to facilitate the efficient delivery of the OE contract.

Key Responsibilities:

• Administrative Support

1. Define administrative procedures in line with the OE contract.
2. Prepare, review, and format documents, correspondence, reports, and presentations.
3. Manage document filing, archiving, version control, and compliance with project documentation standards.
4. Support internal and external workflows, approvals, and document routing.

• Coordination and Communication

1. Act as a local coordination point between the OE team, the Client and the rest of the OE Companies.
2. Provide verbal and written translation support (Bulgarian to English and English to Bulgarian) when required.
3. Assist in scheduling and coordinating meetings, workshops, and onsite activities.

We are seeking a Site Technician to support operations at our Bitcoin mining facility in Oklahoma. The ideal candidate has hands-on experience maintaining Bitcoin mining hardware and site infrastructure. This role focuses on reliable day-to-day technical operations, maintenance, and performance optimization under the direction of the Site Manager and Senior Site Technician.

Responsibilities

• Perform daily inspections, maintenance, and repairs on ASIC miners (Bitmain, MicroBT, etc.).
• Monitor power distribution units (PDUs), cooling systems, and network connectivity for stable operation.
• Troubleshoot miner faults, cabling issues, and power irregularities.Assist with installation and setup of new miners and infrastructure components.
• Maintain organized records of work performed, miner status, and inventory.Support implementation of preventive maintenance and site safety programs.
• Coordinate with senior technical staff to minimize downtime and improve efficiency.
• Follow all operational and safety procedures to maintain a clean, compliant work environment.
• Contribute to continuous improvement of site processes and workflows.

Requirements

We are seeking a Senior Site Technician to support operations at our Bitcoin mining facility in Oklahoma. The ideal candidate has 3+ years of hands-on experience maintaining and optimizing Bitcoin mining hardware and infrastructure. This role focuses on ensuring maximum uptime, performance, and operational safety through expert technical work and leadership within the on-site team.

Responsibilities

• Perform daily maintenance, troubleshooting, and repair of ASIC miners (Bitmain, MicroBT, etc.).
• Monitor and maintain electrical distribution, PDUs, and cooling systems to ensure continuous site operation.
• Diagnose and resolve miner performance issues, hashboard faults, and power irregularities.
• Assist with installation, commissioning, and testing of new miners and supporting infrastructure.
• Conduct network setup and monitoring for ASICs and management systems.
• Maintain accurate logs of repairs, replacements, and downtime events.
• Support implementation of preventive maintenance programs.
• Collaborate with the Site Manager and junior technicians to ensure operational targets are met.
• Uphold site safety and compliance standards at all times.
• Provide technical input for upgrades and scaling projects.

Requirements

We are looking for an experienced Senior Site Technician to join our team at a Bitcoin mining facility in Oklahoma.
You will be responsible for maintaining ASIC miners, electrical infrastructure, and cooling systems — ensuring maximum uptime and safe operations.

Responsibilities

• Perform daily maintenance, troubleshooting, and repair of ASIC miners (Bitmain, MicroBT, etc.).
• Monitor and maintain electrical distribution, PDUs, and cooling systems to ensure continuous site operation.
• Diagnose and resolve miner performance issues, hashboard faults, and power irregularities.
• Assist with installation, commissioning, and testing of new miners and supporting infrastructure.
• Conduct network setup and monitoring for ASICs and management systems.
• Maintain accurate logs of repairs, replacements, and downtime events.
• Support implementation of preventive maintenance programs.
• Collaborate with the Site Manager and junior technicians to ensure operational targets are met.
• Uphold site safety and compliance standards at all times.

Requirements