Backend Engineer (Hyperliquid Focus)

Location: Remote (EMEA Region Only) Type: Full-Time

Compensation: €90K - €130K

We are hiring on behalf of our client who are on a mission to simplify multi-chain DeFi for financial institutions, fintechs, and service providers. Their team is building a unified infrastructure layer that provides seamless access to on-chain liquidity across all major blockchains, enabling high-performance same-chain and cross-chain swaps. They are a passionate, remote-first team dedicated to making complex decentralized technologies accessible and building a fairer, more transparent world.

They are looking for a Backend Developer with a deep interest in the Hyperliquid ecosystem to join their engineering team. This is a pure backend role—no frontend or design work is required. You will focus on building the infrastructure that allows them to distribute programmatic trading features (such as TWAP and perps) to the broader DeFi ecosystem.

Location Note: This position is strictly open to candidates currently located in the EMEA region.

What you’ll do:

Data Scientist

Location: New York

On-site | Full-time

Compensation: Competitive

Our client is a high-performance technology development company responsible for the entire technical stack behind the world’s largest and most active digital asset launchpads. Operating at the absolute edge of crypto scale, the systems managed by this organization are defined by ultra-low latency, high throughput, and constant high-concurrency load. This is a mission-critical environment where technical precision is paramount and the impact of every deployment is immediate.

The organization is seeking an experienced, versatile Data Scientist who thrives in an intense, fast-paced setting. This role provides the autonomy to identify high-impact opportunities, design sophisticated analytical solutions, and measure their direct effect on a product used by massive global audiences. Joining this team means entering a high-density talent environment that values first-principles thinking, extreme ownership, and the ability to operate independently within a high-stakes ecosystem.

Key Responsibilities

About the Job

Join Excelya, where Audacity, Care, and Energy define who we are and how we work. We believe in creating bold solutions and fostering an inclusive environment where collaboration and individual growth go hand in hand.

The In Vivo Pharmacology Scientist is responsible for designing, executing, and analyzing preclinical in vivo studies to support drug discovery and development. This role involves leading internal and external teams, supervising operational tasks to support neurology projects in early and late research phases and clearly communicating the in vivo pharmacology plan and results to the project team and relevant decision-making committees

Data Scientist - Consumer Product Optimization

Location: New York City, London (Office)

Compensation: $250K - $300K

We are seeking an experienced, versatile Data Scientist to join our team, which is focused on a fast-paced consumer-facing product within the fintech or equivalent industry. This is a high-autonomy role where you will have the freedom to identify opportunities, design and implement solutions, and measure their impact across our entire product suite.

We value generalists who possess breadth across the data science field and thrive on end-to-end ownership. You will collaborate with cross-functional teams while driving projects independently from conception to completion.

The Data Scientist will be responsible for leveraging data to drive product decisions, optimize user experiences, and uncover strategic opportunities for growth.

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 iOS Engineer (Mobile Lead, Web3 Focus)

Location: Remote - NY or CA preference - will consider US remote

Compensation: $250K - $375K

We are seeking a highly motivated and experienced Senior iOS Engineer to take the mobile lead role in shaping the user experience for an innovative, new asset layer and decentralized platform. This is a unique opportunity to drive the architecture, development, and evolution of our native iOS applications, focusing on delivering a simple, elegant, and trustworthy mobile experience for complex on-chain asset interactions.

You will act as both a hands-on technical contributor and a mentor, shaping the mobile engineering culture alongside product, design, and Web3 teams.

As the Senior iOS Engineer, you will be the mobile expert responsible for defining how users engage with our platform's next-generation asset layer. Your primary focus will be on delivering exceptional UI/UX for consumers, creators, and communities on iOS.

Lifecycle / Retention Manager (Braze Focus)

Location: Remote - Open to remote US/Canada but MUST be available for in person sprints in NYC - Preference for full time in NYC

Compensation: $130K - $150K

We are a high-growth consumer technology company defining the next generation of finance. Our iOS and Android application is often described as the "Robinhood for DeFi," allowing anyone to trade cryptocurrencies on-chain through a simple, user-friendly interface. Since our launch in July 2024, we have attracted over 2 million users. Our mission is ambitious yet straightforward: to onboard the world to decentralized finance, making finance open and accessible to everyone.

We are a lean team of passionate self-starters who relish autonomy and are united by a sense of urgency. We are seeking a Lifecycle / Retention Manager to take end-to-end ownership of our CRM strategy, primarily utilizing Braze.

As the Lifecycle / Retention Manager, you will be the core owner of the entire user messaging lifecycle. You will leverage Braze end-to-end to drive user activation, retention, and reactivation across all messaging channels. This role requires a hands-on operator who is driven by metric movement and a deep understanding of user psychology.

Key Responsibilities

Junior Data Analyst (Product Focus)

Location: London, New York City (Office)

Compensation: $175K - $225K + Tokens/Equity

We are seeking a motivated Junior Data Analyst who is eager to learn, grow, and make a significant impact in a fast-paced environment at the intersection of consumer technology and next-generation finance. In this role, you will play a crucial part in supporting data initiatives across our product, helping various teams make informed decisions through clear analysis, reporting, and insight generation.

You will work closely with senior data staff while gradually taking on more ownership as you develop your skills in a supportive, high-autonomy environment.

As a Junior Data Analyst, you will support critical data initiatives, translating raw data into actionable insights that directly influence product strategy and user experience. You will be instrumental in tracking key performance indicators (KPIs) and uncovering opportunities for growth and optimization.

Machine Learning Engineer, AI Decisioning (Full-time)

Location: Remote (North America) / San Francisco (Optional)

Salary Range: $200,000 - $260,000 USD

We are expanding our data activation products to include a powerful intelligence layer, and we are looking for a highly experienced Machine Learning Engineer to join our team. Hundreds of companies use our platform to automate and improve operations by syncing data into their systems, but there is immense potential in helping them make smarter decisions about which customers to message, what content to use, and when to send messages.

A lot of this crucial decision-making today is often manual and driven by intuition. By integrating machine learning, we aim to deliver a step-function impact for our customers. Given our access to first-party customer data, we are perfectly positioned to build an intelligence layer that leverages this rich data source.

Your responsibilities will include working on complex problems such as:

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 :