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2x Quantitative Researcher/Engineer

posted by: spj_bot

Quantitative Trading & Market Microstructure Specialist - High-Performance DEX

Location: Remote - Global (Preference for candidates based in: Lisbon, Portugal / UAE / Switzerland / Singapore / Hong Kong / Brazil / USA / UK / Spain / Canada / France / Germany / Greece)

Compensation: $180K - $220K

We are building a high-performance blockchain operating system that fundamentally redefines what's possible on Ethereum by prioritizing unparalleled throughput, decentralization, and security. We are now expanding the team for O2, a new, early-stage project: a next-generation decentralized exchange (DEX) running on our modular execution layer. Designed as a Central Limit Order Book (CLOB), our goal is to build the fastest DEX ever constructed, leveraging parallel execution to unlock high-frequency trading efficiency fully on-chain.

You will play a foundational role, leveraging your expertise in market making and quantitative trading to model, simulate, and optimize the market behavior of our core CLOB protocol. This is a highly hands-on role where you will design and test trading strategy logic, build simulation frameworks, and collaborate with engineering and research to inform critical protocol-level design decisions.

Key Responsibilities:

Job Skills

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Staff Software Engineer - Execution Team

posted by: spj_bot

Staff Software Engineer - Distributed Ledger Execution

Location: Remote - US

Compensation: $ Competitive

We are a fast-growing software company committed to supporting, developing, and servicing an open source, proof-of-stake platform. This EVM-compatible Distributed Ledger Technology (DLT) is specifically built to meet the needs of enterprise and Web3 applications, prioritizing speed, security, stability, and sustainability. We are seeking a Staff Software Engineer to be a technical leader on our core Execution Team.

You will be responsible for delivering software services, business logic, and APIs within the core Consensus Node—the heart of our DLT. This is a high-impact role requiring deep passion for solving technical challenges involving distributed execution, state management, transaction lifecycles, and economic systems (fees, rewards). You will drive technical direction, optimize performance, and mentor engineers within a highly collaborative, open-source environment.

Key Responsibilities:

Job Skills

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Solidity Smart Contract Engineer

posted by: spj_bot

Smart Contract Developer - Institutional DeFi Protocol

Location: Remote - US only (preference for onsite/hybrid in LA)

Compensation: $160K - $180K

We are an on-chain financial infrastructure company backed by leading VCs, committed to upgrading financial markets through 24/7 instant settlement. Our first product is an institutional-grade smart contract protocol that facilitates interoperability and liquidity across tokenized financial assets and stablecoins. We are seeking a Smart Contract Developer to join our core engineering team and build the foundational infrastructure that bridges traditional finance (TradFi) and decentralized finance (DeFi).

This is a high-impact, hands-on role where you will design, develop, and deploy highly secure, robust smart contracts for our core protocol. You will architect on-chain logic, optimize gas efficiency, and ensure best-in-class security practices to enable institutional-grade DeFi operations. You will work within a small, senior team, collaborating closely with security auditors, product, and business stakeholders.

Key Responsibilities:

Job Skills

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Solana Program Engineer

posted by: spj_bot

Solana-Focused Frontend Engineer - Crypto Social Finance

Location: Remote - preference is NYC/LDN but open to remote candidates if they're an exceptional fit.

Compensation: $250K - $300K

We are a high-growth software development company of elite builders, redefining what's possible and proud contributors to the largest crypto social network globally. We are seeking a Solana-Focused Frontend Engineer to play a critical role in building and scaling cutting-edge platforms at the forefront of crypto and social finance, delivering high-performance, user-centric applications across web and mobile.

You will be instrumental in bridging the gap between our smart contract infrastructure and the user interface, working in an environment where speed, ownership, and innovation are paramount. You will own the front-end implementation of new on-chain features, optimize performance, and ensure a seamless user experience for real-time interactions.

Key Responsibilities:

Job Skills

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Senior Rust Engineer

posted by: spj_bot

Senior Rust Engineer - On-Chain Security Infrastructure

Location: Remote - Europe

Compensation: $165K - $200K

We are building a Credible Layer—a step-level improvement for on-chain security designed to safeguard the crypto industry and restore credibility after billions were lost to hacks. We are creating an on-chain protocol and off-chain infrastructure that enables protocols to enforce security rules for every transaction. Backed by world-class investors, we are seeking a Senior Rust Engineer to work on bleeding-edge infrastructure at the heart of our mission.

You will play a crucial role in shipping cutting-edge features that extend the EVM (Ethereum Virtual Machine) to enable security rules to be checked after every state transition. This is a high-impact, deeply technical role requiring expertise in performance optimization and low-level systems programming within a collaborative, fast-iteration environment.

Key Responsibilities:

Job Skills

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Marketer

posted by: spj_bot

Creative Marketer - Next-Generation Layer-1 Blockchain

Location: Paris (Hybrid)

Compensation: $80K - $105K

We are a well-funded startup building a next-generation base layer blockchain designed to unlock customizability, scalability, and privacy by combining native proof verification directly into the protocol. Fueled by a $3.4M investment from top-tier venture capitalists, we are looking for a resourceful, creative marketer with a hacker mindset to amplify our brand voice and drive aggressive growth in the blockchain space.

This role is for an action-oriented, highly autonomous builder who thrives on experimentation and driving measurable outcomes. You will be responsible for end-to-end marketing execution, managing high-impact campaigns, and creating engaging content across all channels to grow our reach and mindshare.

Key Responsibilities:

Job Skills

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Growth Associate, X (Twitter)

posted by: spj_bot

Growth Associate, X (Twitter) - Layer 1 Blockchain Performance

Location: New York (Hybrid)

Compensation: $150K - $200K

We are the first parallelized layer 1 blockchain, setting a new standard in performance and scalability by re-writing the most widely adopted execution environment in Web3. Our organization drives adoption, supports the community, and partners with developers to bring groundbreaking applications to life. We are seeking a Growth Associate, X (Twitter) to spearhead the development of our identity and narrative across global social platforms.

You will be responsible for defining and executing the strategic development of our brand's voice and reach, focusing heavily on platforms like X (Twitter). This role demands a blend of strategic thinking, creative instinct, and a deep understanding of crypto and meme culture to deliver innovative and engaging content that expands our community and mindshare.

Key Responsibilities:

Job Skills

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Front-End Engineer

posted by: spj_bot

Front-End Engineer - Institutional DeFi Liquidity Layer

Location: Remote - US - Would consider South America & Canada (Preference for onsite/hybrid in LA)

Compensation: $ Competitive

We are an on-chain financial infrastructure company building the liquidity layer for the tokenized economy, backed by leading investors. Our flagship protocol connects tokenized assets and high-quality stablecoins to enable 24/7, real-time, compliant capital movement across blockchains. We are seeking a Front-End Engineer to design and build the user experiences that power institutional DeFi, working with production partners including major financial institutions.

You will lead the development of user interfaces for our protocol's web and mobile products and dashboards, spanning swaps, liquidity management, and analytics. This role requires translating complex blockchain and financial interactions into beautiful, intuitive, high-performance interfaces for sophisticated financial users. You'll join a small, high-velocity team, shipping code daily and defining the future of on-chain institutional finance.

Key Responsibilities:

Job Skills

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Staff Frontend Engineer

posted by: spj_bot

Staff Frontend Engineer - Global Trade Comment Network

Location: New York City (Hybrid)

Compensation: $180K - $250K

We are building the global trade comment network, a protocol designed to solve the core problem of discovery in trading: what to buy and why. Our solution allows users to comment on their trades and see the trade comments of others, turning trading into a high-frequency social activity. We are backed by world-class investors and are seeking a highly experienced Staff Frontend Engineer to build and scale our mobile and web applications.

This is a high-impact role requiring deep experience in building and scaling complex mobile and web applications that power high-frequency social interactions. You will own the responsibility for ensuring a smooth UX and sub-second rendering across feeds of thousands of items, tackling meat-and-potatoes software engineering challenges to deliver a reliable and engaging product across devices.

Key Responsibilities & Projects:

Job Skills

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Senior Backend Engineer

posted by: spj_bot

Senior Backend Engineer - Decentralized Perpetual Exchange

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

Compensation: $180K - $300K

We are the largest decentralized perpetual exchange on a leading Ethereum Layer 2 solution, processing over $20 billion in cumulative trading volume. Our mission is to bring global markets on-chain, enabling leveraged trading of real-world assets (commodities, forex, indices, stocks) alongside crypto, all with full self-custody. Backed by top-tier investors, we are a small team scaling critical infrastructure handling billions in volume and are seeking an exceptional Senior Backend Engineer who deeply understands crypto infrastructure.

You will build and scale the high-reliability systems that power our exchange, directly impacting billions in trading volume. This role requires navigating the entire stack, from reading blockchain state and decoding oracle message signatures to building high-performance APIs and data pipelines. You will be comfortable working close to the protocol layer while owning critical infrastructure that processes thousands of trades daily.

Key Responsibilities:

Job Skills

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