Senior Frontend Engineer - Wallets-as-a-Service Platform

Location: Remote - Location: US or EU (remote-first, office optional). Ideally based in EST or as close to France or Paris is always the major preference.

Compensation: $160K - $220K

We are hiring an engineer to drive the user-facing side of our platform, building the backbone of blockchain wallet infrastructure for the next financial era. This is a high-impact role requiring deep expertise in modern frameworks, cross-platform development, and strong UX instincts. We need a rigorous builder who can translate complex requirements into fast, intuitive, and trustworthy financial tools.

This is not a narrow frontend role; you will move fluidly between polished user experiences and the developer tools that make them possible. You will own features end-to-end, delivering business-grade software that makes complex financial workflows effortless for developers, administrators, and end-users. Speed and security must be balanced with clean architecture and reliable performance.

Responsibilities:

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:

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:

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

Lead Protocol Engineer - HyperEVM DeFi Trading Infrastructure

Location: Remote - Preference for EST time zone or candidates that can overlap with EST

Compensation: $200K - $300K

We are building the next generation of DeFi trading, leveraging decentralized technologies to democratize access to global financial markets. As the largest builder product on our core platform, we have processed north of $50 billion in cumulative trading volume and achieved eight figures in revenue in the past year. We are a small, highly technical team focused on results, and are seeking a Lead Protocol Engineer to architect and scale our smart contract infrastructure on HyperEVM.

You will be the technical owner and lead protocol developer, responsible for the design, implementation, and deployment of smart contracts on the HyperEVM. This role is ideal for a strong individual contributor who thrives in a low-process, high-trust, and ambiguous 0-to-1 environment. You will be building DeFi primitives and trading infrastructure designed to scale to millions of traders and billions in daily volume.

What You Will Do:

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:

At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

At Quento, we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Quento Technologies seeks a highly motivated and experienced IT Murex Consultant. The role will be part of the IT & FM FinApps team, under the Murex support function and will be responsible for the design, build and maintain MX Test, Back Office, Interfaces, and Reporting Murex modules.

Responsibilities:

Software Engineer - Founder Accelerator Infrastructure

Location: New York

Onsite | Full-time

Compensation: $180K - $260K

Our client is the premier accelerator for founders within the decentralized technology and digital asset space. Since 2020, the organization has backed over 300 startups—collectively valued at over $10B—positioning itself as a central pillar in the evolution of the global startup ecosystem.

The organization is seeking a high-agency Software Engineer to join an elite, in-house engineering team. This individual will work directly with the Chief Technology Officer and will be responsible for owning product features from initial requirement definition through to production. The ideal candidate is a product-minded builder who excels in high-trust, high-performance environments and possesses the ability to turn ambiguous problems into polished software without the need for dedicated project management or design oversight.

This role is based in New York City. Relocation to NYC is a non-negotiable requirement for this position to ensure close collaboration with founders and the core leadership team.

Key Responsibilities

Data Scientist - DeFi Quantitative Research

Location: Remote - US, Canada and would consider candidates based in Puerto Rico

Compensation: $150K - $200K

We are a Series B quantitative research and optimization company that leads the field in DeFi economics. We manage market risk, optimize growth, and ensure economic safety for protocols facilitating most spot trading, borrowing, and lending activity across all of DeFi, protecting and optimizing the largest protocols and networks in the industry. We build institutional-grade vaults for decentralized finance and currently manage risk and incentives covering over $42 billion in customer TVL. We are seeking experienced Data Scientists to help new and established protocols better understand and optimize the systems they've built.

In this role, you will work directly with the premier and most innovative DeFi protocols, developing expert-level knowledge of the mechanisms that underpin the industry. This requires a strong ability to perform in-depth quantitative research, manage client engagements end-to-end, and translate complex data insights into clear, actionable value.

Responsibilities:

CTO/Engineering Lead - Solana ZK Computation Framework

Location: Remote - North America/Asia preferred - Not a must though

Compensation: $200K - $225K

We are building the first Solana-native verifiable computation framework designed to accelerate the adoption of ZK technology and enhance Solana's vision for Internet Capital Markets. Our platform allows developers to outsource complex computations off-chain while generating cryptographic proofs that are verified on-chain. We provide a suite of developer tools and a prover network, currently supporting the RISC Zero zkVM. We are seeking a talented CTO/Engineering Lead to build and scale our engineering team.

As the technical leader, you will be critical in helping us shape the future of verifiable computation on Solana, ensuring we develop the most performant, scalable, and decentralized computation network. You will own the technical roadmap, culture, and architecture, driving our mission to add safety, verifiability, and trustlessness to the Solana ecosystem.

Key Responsibilities: