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

Compensation: $144K - $164K

Location: United States (Remote or Brooklyn, NYC Office)

We are seeking a proactive and results-driven Senior Full Stack Engineer to join our team, which is building the first automated, on-chain economic security system for leading crypto protocols. Our platform helps optimize risk management and capital efficiency while safeguarding user funds for protocols managing billions of dollars in assets.

You will report directly to the Oracle Team Lead and play a critical role in developing data-driven dashboards and tools to support risk analysis. You will collaborate closely with research and protocol teams to deliver high-quality frontend and backend components that power crucial protocol security insights.

This role requires a high degree of ownership and technical expertise across the full stack.

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 / iOS Engineer – Accountability Protocol

Location: Remote - U.S. Timezones (NYC Office)

Compensation: $140K - $200K

Join a dynamic early-stage team building an innovative accountability protocol that sits at the intersection of consumer technology and blockchain. Our mission is to leverage phone and wearable data as an oracle to enable users to stake money on personal goals, creating powerful "commitment contracts." This is a unique opportunity to secure a founding-level seat and drive the technical direction of a high-impact consumer product.

As the Founding Full-Stack Engineer, you will be responsible for accelerating the buildout of our core consumer-facing product: a beautiful, fast, and highly reliable native iOS application. This app uses blockchain rails behind the scenes to power our innovative accountability system.

Your Mission & 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

Senior Accounting Manager - Foundational Finance for the Future of Money

Location: New York City (Hybrid)

Compensation: $140K - $175K

We are building a foundational platform designed to transform how value moves globally, focusing on creating a new, efficient financial fabric underpinned by programmable digital dollars. We are a mission-driven company, backed by world-class investors, dedicated to driving the adoption of trusted, accessible, and utility-focused on-chain value.

The Senior Accounting Manager will be a critical hire, reporting to the Director of Finance and taking ownership of key financial operations, specifically bridging traditional accounting discipline with the evolving world of digital assets. You will serve as the primary controller for digital asset accounting, manage relationships with external accounting partners, and lead crucial regulatory reporting submissions.

This role requires a hands-on approach and significant ownership, ideal for a professional eager to shape processes and build scalable financial systems from the ground up within a fast-paced, high-growth startup environment. You will partner closely with engineering, operations, and compliance teams to ensure accurate financial records, timely reporting, and strong internal controls.

Key Responsibilities:

SupportYourApp — міжнародна Support-as-a-Service компанія, що надає надійні послуги технічної та клієнтської підтримки, а також сервіси, пов’язані з покращенням клієнтського досвіду зростаючим компаніям вже протягом 15 років. Наразі в нашій міжнародній спільноті 2000+ фахівців.

Ми надаємо послуги по всьому світу, підтримуючи клієнтів 60-ма мовами, співпрацюємо з такими лідерами як MasterCard, Calm та MacPaw, маємо міжнародні хаби, а також розробляємо інноваційні продукти, такі як Quidget, щоб робити клієнтський досвід кращим кожного дня.

2026 рік тільки почався, а ми вже заряджені на нові знайомства та круті технічні виклики 🔥

Наша Infrastructure Community активно зростає, тому ми завжди шукаємо DevOps інженерів та Системних Адміністраторів, які хочуть працювати зі складними системами, автоматизацією та сучасними технологіями.

Ми будуємо інфраструктуру, що тримає на собі наші внутрішні продукти та системи, впроваджуємо інновації, експериментуємо з ШІ та постійно вдосконалюємо процеси. Якщо ти кайфуєш від того, щоб системи працювали стабільно та швидко — нам по дорозі.

Нам цікаво познайомитись, якщо ти: