Senior/Lead Smart Contract Engineer - Decentralized Perpetuals Exchange

Location: Remote - US or EU if willing to overlap 6+ hours with ET

Compensation: $250K - $500K

We are building the backbone of global decentralized finance (DeFi), operating the largest perpetual exchange on Arbitrum and processing over $20 billion in cumulative trading volume. Our platform enables leveraged trading of real-world assets (RWAs)—commodities, forex, indices, and stocks—alongside crypto, bringing global markets on-chain with full self-custody. Backed by General Catalyst and Susquehanna International Group, we are a small team providing institutional-grade reliability for a protocol handling billions in volume.

We are seeking an exceptional Senior or Lead Smart Contract Engineer to help scale our protocol as we expand to hundreds of markets and billions in daily volume. You will work directly with our founding team (backgrounds from Harvard, Bridgewater, and BlackRock) to architect and implement critical protocol upgrades and new market mechanisms for the next generation of on-chain derivatives.

This is not a junior role. We need an expert who has built and maintained perpetual Decentralized Exchange (DEX) smart contracts in production at scale.

Key Responsibilities:

Senior Core Systems Engineer - Secure Wallet Infrastructure

Location: Remote - Location: US or EU (remote-first, office optional). Must be in the US, not Canada or in the European Union. France or Paris or as close as possible, always preferred.

Compensation: $180K - $260K

Join a stellar team of leaders and experts in blockchain technology, cryptography, infrastructure, and security to build the backbone of blockchain wallet infrastructure for the next financial era. We are hiring a Senior Core Systems Engineer to design, build, and scale the low-level systems at the heart of our platform, where performance, security, and correctness are non-negotiable. This is a high-impact role focused on turning advanced cryptography into fast, resilient, and trusted production infrastructure.

As a Core Systems Engineer, you will work deep in the stack, designing and scaling reliable distributed services and integrating them with cloud, hardware, and blockchain environments. You will collaborate across product, research, and security to implement advanced cryptographic and security protocols using low-level systems languages.

Responsibilities:

Full Time Female Specimen Collector Phlebotomist 

Location: Dayton, OH

Schedule: Full-Time | Monday-Friday 8:00am-4:30pm

Seeking: Female candidates required for observed collections of gender identified female patients.

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector Phlebotomist is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

As a Specimen Collector Phlebotomist: 

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

DSI Systems Inc., an authorized partner of DIRECTV, is looking for an energetic and motivated individual to join our Lodging & Institutions sales team as an Entry-Level Sales Representative. This role is perfect for someone who is eager to learn, ready to take the first step in their career, and thrives in a supportive, family-owned business environment. At DSI, we value growth from within—many of our leaders started in entry-level positions just like this one.

As part of our team, you will help bring DIRECTV services to hotels, senior living communities, and other lodging facilities by identifying opportunities, building relationships, and partnering with local dealers. You’ll gain hands-on experience in sales and account management while working closely with a team that values collaboration, trust, and genuine customer relationships.

*THIS IS AN IN-OFFICE POSITION THAT WILL REPORT TO OUR URBANDALE, IOWA OFFICE*
Monday – Friday 8:30 am – 5 pm

About DSI

Founded in 1984, DSI is a family-owned company committed to delivering exceptional value and measurable results to our clients and partners. Our comprehensive services include sales management, marketing support, hardware logistics, immersive training, engineering expertise, and proprietary software solutions—all designed to drive growth and operational efficiency.

Lead Mobile Engineer - Fintech/Blockchain

Location: Remote - Location: US or EU (remote-first, office optional). Based in EST time zone preferably and as close to France, Paris is always the major preference.

Compensation: $140K - $220K

We are hiring a Lead Mobile Engineer to drive the user-facing side of our secure, next-generation financial platform. This remote-first role is focused entirely on mobile, requiring you to design, build, and refine our iOS and Android applications, craft intuitive cross-platform interfaces, and shape the mobile SDKs that developers rely on. This is a critical opportunity to turn complex financial requirements into simple, trustworthy workflows while owning projects end-to-end.

As the Lead Mobile Engineer, you will set the technical direction for our user-facing mobile experience, balancing fintech-grade UX with bank-grade security and reliability. You will be responsible for bringing complex requirements into production quickly and rigorously.

Responsibilities:

Mercier Consultancy MD is excited to offer a unique opportunity for Dutch speakers looking to work from the beautiful setting of Greece! This remote position provides the flexibility to work from home while earning a competitive salary of €1733 per month. As a key member of our team, you will engage with clients, providing exceptional service and support in Dutch. This role is perfect for individuals who are self-motivated, enjoy working independently, and are looking to immerse themselves in a vibrant culture while maintaining a fulfilling career.

Key Responsibilities

• Manage customer inquiries and provide support via various communication channels in Dutch.
• Maintain high standards of service while addressing customer requests and resolving issues.
• Collaborate with team members to enhance customer experience and business processes.
• Document and track customer interactions to ensure effective follow-up.
• Contribute to team goals and participate in regular meetings to discuss performance metrics.
• Stay informed about company products and services to provide accurate information to clients.

Requirements

Full Time Specimen Collector  

Location: Saint Paul, MN

Schedule: Full-Time | Monday-Friday 5:15am-2:00pm

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

As a Specimen Collector: 

Full Time Female Specimen Collector  

Location: Cape Girardeau, MO

Schedule: Full-Time | Monday-Friday 8:00am to 4:30pm

Seeking: Female candidates required for observed collections of gender identified female patients.

Help make a positive impact in your community! 

Millennium Health LLC is an accredited specialty laboratory with more than a decade of experience in medication monitoring and drug testing services, helping clinicians monitor use of prescription medications and illicit drugs supporting improved clinical decision-making as part of treatment for millions of Americans with chronic pain, mental illness, and substance use disorders.

The Specimen Collector is a key role at Millennium Health.  As our representative, this position provides exemplary care and exceptional customer service to patients, clinicians, and our laboratory.

As a Specimen Collector: 

Senior Software Engineer

Location: Williamsburg, Brooklyn, NYC (100% On-site)

Compensation: $150,000 - $225,000 (Base Salary) + Competitive Equity

We are building the future of digital advertising, transforming the $600B ecosystem by enabling brands to buy creator media like they buy Meta or Google ads. Our AI-native platform delivers performant, scalable, and authentic creator-led marketing, compressing weeks of manual sponsorship work into seconds. Backed by top-tier VCs and named to Forbes’ list of Next Billion Dollar Startups, we are seeking a Senior Software Engineer to join as a foundational member of the engineering team.

As a Senior Software Engineer, you will work directly with our founders, designing, building, and launching new product features from the first line of code to production. You will have significant autonomy and ship real functionality every week, tackling complex engineering problems that directly shape our product and business outcomes.

In this role, you will: