Hybrid UX & Graphic Designer (Blockchain/Fintech) - Global Remote

Location: Remote - Global (Preference for candidates based in Europe)

Compensation: $150K - $180K

We are seeking a versatile and strategic Hybrid UX and Graphic Designer to transform complex crypto products into professional, intuitive, and visually compelling experiences.

Join a passionate, intelligent, and globally dispersed team building a high-performance blockchain operating system that redefines what is possible on Ethereum. Our platform, which includes a groundbreaking Virtual Machine and a new programming language, focuses on unparalleled throughput, decentralization, and security, simplifying the development process for builders worldwide. We are united by a love for innovation and a commitment to shaping the future of blockchain technology.

This role is responsible for design across product development, marketing, and community engagement. You will create end-to-end user experiences for professional traders, develop high-impact visual assets for marketing campaigns, and ensure a cohesive, high-standard visual identity for the platform. The ideal candidate will possess a strong understanding of trading mechanics and user interfaces, translating this knowledge into precise and effective design solutions.

Lead Blockchain Payments Engineer - Fiat Ramps & Financial Infrastructure

Location: Full-time, In-person — London, UK

Compensation: $250K - $300K

Join a team of elite builders and a high-growth software company redefining what is possible in the fintech and crypto space. We operate with a philosophy of speed, ownership, and talent density, driving towards a future where financial flows are seamless and instantaneous.

As the Lead Blockchain Payments Engineer, you will be a core architect and owner of our essential financial infrastructure. This high-impact role requires you to design and scale the core services that power seamless fiat ↔ crypto flows, real-time risk decisions, and rock-solid financial records for a high-volume, global platform.

You will act as a backend and onramp specialist, leading the development of high-throughput, low-latency distributed systems that manage the entire financial lifecycle from user deposit to on-chain settlement.

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:

About Signal Ocean

Signal Ocean is the technology arm of the Signal Group. Our primary product, The Signal Ocean Platform, enables shipping professionals to securely handle, integrate, and assess intricate collections of private and public shipping data. Driven by advanced machine learning and artificial intelligence, our technology suite provides tailored, exclusive insights that supports our clients in improving performance and efficiency. Insights are delivered over web and mobile applications, as well as through a rich set of APIs and SDKs. Our backend architecture is abstracted to modularly offer deep analytics capabilities our solutions leverage or can be directly embedded in our client’s system topologies.

About the role

Shipping remains one of the world’s most complex and under-digitized sectors - a space where data and digitisation can make a profound difference. In an era defined by global disruptions, from sanctions to supply chain challenges, innovation in this field directly shapes how the world moves goods and commodities. At Signal, we look for people eager to explore this vast, often overlooked domain, and to help build technologies that bring clarity, efficiency, and intelligence to maritime commerce and global trade.

Domain Mastery via Rotation

We don't believe in keeping designers in silos. To design for shipping, you need to understand the whole lifecycle.

Lead Product Designer (Web3/DeFi)

Location: $150K - $200K

Compensation: Remote - US/Europe/Latam/Dubai but must have 5hrs overlap with EST

Join a well-funded, expert-led team building the unified yield engine for the crypto economy. We are creating the platform that intelligently reallocates assets across Decentralized Finance (DeFi) protocols to maximize returns. This is a foundational, fully remote role to own our user experience, brand, and design system from the ground up.

As the Lead Product Designer, you will have immense ownership, responsible for shaping the design of the next generation of our platform. You will build extraordinary, simple, and delightful experiences in a complex Web3 ecosystem. This role is ideal for a designer who thrives on high ambiguity, rapid iteration, and taking full ownership of the design process end-to-end.

The Opportunity:

Founding Engineer - AI Native Workspace

Location: San Francisco, CA (On-site)

Employment Type: Full-time

Compensation: $150K - $250K

We are a well-funded, early-stage company building a reimagined workspace with AI at its core, starting with an AI native spreadsheet product. We are looking for an experienced Founding Engineer—a generalist who thrives in a fast-moving, talent-dense startup environment.

As a member of our extremely small team, you will be instrumental in creating a magical and accessible agent experience, tackling the significant opportunity of large-scale agent-orchestration.

• Operate in a full-stack capacity, contributing across the entire product.
• Talk to users, track metrics, and iterate quickly to achieve product-market fit.
• Scope out and implement core features of our AI-native workspace.
• Actively shape the product vision and roadmap alongside the founders.

We are backed by a premier accelerator and top builder/operators, including co-founders of major tech companies. This is a unique chance to define the future of how people interact with data and intelligence in their daily work.

Requirements

Machine Learning Scientist (SocialFi/Decentralized Platform)

Location: New York City, London (Office)

Compensation: $250K - $300K

We are a high-growth software development company comprised of elite builders, moving fast to redefine what is possible in the social and decentralized technology space. We are proud contributors to one of the largest global social networks in the crypto space. We are committed to leveraging cutting-edge technology to build the future of decentralized applications.

We are seeking an experienced Machine Learning Scientist to be instrumental in applying AI and ML techniques to shape the future of our platforms and beyond.

As a Machine Learning Scientist, you will work alongside world-class engineers and product teams to drive the development of sophisticated algorithms. These models will power key platform features such as personalization, recommendations, search, and real-time decision-making, significantly enhancing the user experience.

Key Responsibilities

eJam is in search of a talented and detail-oriented User Interface Designer to elevate one of our e-commerce brand's digital presence. If you have a flair for creating compelling visuals and a knack for social media trends, we want you on our team!

Founded in 2017, eJam is a direct-to-consumer brand incubator; focused on creating products that people love. Today, we own and operate a portfolio of brands with products that put you first. We take a unique approach to each brand and every product, making sure that we are fulfilling a real need while helping to shift the status quo.

This is an excellent opportunity for a highly motivated individual, eager to excel in a fast-paced and growth-centric setting. We're looking for someone who understands graphic design best practices, is deadline-oriented, and detail-focused, and has thrived in a remote role.

eJam is a consumer products brand incubator and holding company focused on eCommerce marketing. We are seeking an experienced Retention Marketing Specialist to play a crucial role in supporting our marketing team's initiatives and contributing to our overall brand-building strategy.

Role Overview:

This position involves developing and executing email and SMS marketing strategies to enhance customer engagement, drive revenue growth, and support marketing efforts for our eCommerce, marketplace, and retail business.

This role is the right fit for you if :

Senior AI Engineer (Product Focus)

Full-time | Remote

Location: USA

We are a technology company focused on empowering teams by combining cutting-edge software with expert insights. We are seeking a highly skilled Senior AI Engineer to play a key role in integrating and optimizing Large Language Models (LLMs) to deliver transformative value across our platform. This is a highly collaborative, product-focused role operating within a remote-first environment.

You will own the technical execution and continuous improvement of all LLM-powered features across our product suite. Your work will involve deeply integrating AI capabilities into our backend systems to enhance user experience and deliver intelligent capabilities.

What You'll Own: