Backend Engineer - High-Throughput FinTech/Crypto Infrastructure

Location: New York City (Office)

Compensation: $250K - $300K

We are a high-growth software company contributing to one of the world's largest crypto social networks, moving fast and redefining what is possible in the FinTech and crypto space. We are seeking an elite Backend Engineer to design and scale the complex systems powering seamless fiat-to-crypto flows, real-time risk decisions, and rock-solid financial records for a 24/7 system.

You will own mission-critical systems and services at the core of our platform, working on high-throughput, low-latency distributed systems. This role requires deep technical expertise at the intersection of payments, compliance, risk, and on-chain infrastructure.

Key Responsibilities:

Senior/Lead Backend Engineer - FinTech & Crypto Innovation

Location: Remote - Fully remote across Europe - they can do B2B or hire through EoR.

Compensation: $120K - $140K

We are looking for a Senior/Lead Backend Engineer obsessed with good architecture, efficiency, and resilience to help us revolutionize the FinTech and crypto industry. This role is for a pillar of our engineering team who thrives in a fast-paced environment, solving complex banking and crypto problems with speed and elegant, resilient solutions.

You will work directly with the product team, owning the design, development, and deployment of mission-critical services that power our next-generation financial platform. Your focus will be on building scalable, robust backend systems that handle core banking functions, blockchain integrations, and serve data to our mobile and web applications.

What You'll Be Working On:

Protocol Backend Engineer - Stablecoin Platform

Location: North American-based candidate only

Remote | Full-time

Compensation:  $180K - $220K

Join a stablecoin platform for builders, providing a superior digital-dollar building block that allows developers to create and customize their own stablecoins in minutes. This platform enables businesses to monetize digital dollar use cases and maintain control over their money tech stack without operational heavy-lifting, offering features like custom branding, compliance behaviors, and yield distribution mechanics.

We are hiring on behalf of a company who is seeking an experienced Protocol Backend Engineer. In this role, you will enhance the growing set of $M Extensions projects, support partners' technical teams, improve existing products, and create and maintain comprehensive documentation.

Key Responsibilities

Protocol Integration Engineer - Stablecoin Platform

Location: Preference for EST-based candidates

Remote | Full-time

Compensation: $170K - $180K

Our client is a pioneering stablecoin platform designed specifically for builders and developers. The platform empowers users to create customized stablecoins in minutes by extending a superior digital-dollar building block. This framework allows businesses to monetize digital dollar use cases and maintain full control over their financial technology stack—customizing branding, compliance behaviors, and yield distribution mechanics—without the burden of operational heavy-lifting.

The organization is seeking an experienced Protocol Integration Engineer to join its growing team. This individual will play a vital role in enhancing a growing set of extension projects, providing technical support to partner engineering teams, improving existing products, and maintaining comprehensive technical documentation.

Key Responsibilities

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:

Founding Engineer - High-Growth DeFi Mobile Trading App

Location: Remote - US Remote (Must be able to travel to NYC 2 weeks at a time, every 1-2 months for in person collaboration)

Remote | Full-time

Compensation: $200K - $300K

Our client is the creator of a leading decentralized finance (DeFi) application—often described as the “Robinhood for DeFi”—which allows users to trade cryptocurrencies on-chain through a seamless, user-friendly mobile interface. Since its launch in July 2024, the platform has successfully onboarded over 1.5 million users.

The organization’s mission is to onboard the world to decentralized finance, driven by the conviction that blockchain technology can build an open and accessible financial future. This is a lean team of passionate self-starters where every member acts as both a decision-maker and an implementer. As a Founding Engineer, the successful candidate will run toward the hardest problems alongside high-caliber teammates to shape the future of global finance.

Key Responsibilities

Senior Backend Engineer - High-Volume Fintech & Payments Platform

Location: Remote - Based in LATAM / EST /Europe

Compensation: $130K - $180K

We are a technology company building the next generation of money and financial products. We are seeking a Senior Backend Engineer to design and build the core backend systems that power our fintech and payments platform. This role requires deep technical expertise in high-scale transaction systems and strong product awareness to deliver reliable, secure, and impactful solutions.

You will be responsible for the full lifecycle of our backend services, focusing on architecting, building, and operating systems that handle high-volume financial transactions securely and reliably. You will act as a technical leader, driving feature delivery and raising the engineering bar across the team while ensuring our systems align with business priorities.

Key Responsibilities:

Senior Fullstack Engineer - DeFi Trading & Yield Platform

Location: Remote - NYC or SF based candidates heavily preferred

Compensation: $150K - $175K

We are building the leading trading and yield platform for DeFi, founded by former industry leaders with deep expertise in algorithmic trading. Backed by top-tier institutional investors from both traditional finance and crypto, we are creating cutting-edge, crypto-native technology. We are seeking a Senior Fullstack Engineer excited to work on a complex backend managing billions of dollars in crypto transactions while delivering exceptional user experiences.

You will have the opportunity to build across the entire stack, integrating multiple DeFi protocols and connecting with various blockchains. This role demands full ownership of features, requiring you to balance implementation speed with long-term quality and scalability. You will be a key player in shaping our success by designing and building systems capable of high-throughput execution.

Key Responsibilities:

Senior Fullstack Engineer - Web3 User Acquisition Platform

Location: Remote - US (EST Preferred)

Compensation: $150K - $200K

We are a leading web3 user acquisition platform that has powered user onboarding for over 500 protocols since 2021, facilitating over 500 million transactions and serving over 3 million users across 40+ chains. Our platform, which includes gamified activations and unique on-chain credentials, is infrastructure for major players across DeFi, gaming, AI, and NFT ecosystems. Backed by $21M in total funding, we are seeking a highly experienced Senior Fullstack Engineer to own end-to-end feature delivery across our core platform and new initiatives.

In this high-impact role, you will take full ownership of major product features from conception through deployment. You will be instrumental in driving architectural decisions for both frontend and backend systems, ensuring performance and scalability across our complex, multi-chain platform. You will collaborate directly with the Head of Product and Founders to shape product strategy, establish best practices, and mentor other engineers.

Key Responsibilities:

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: