Location: Location: US or EU (remote-first, office optional)

(remote-first, office optional)  | Full-time

Compensation: $140K - $220K

We are hiring on behalf of our client, a leading organization in the fintech and blockchain space is seeking a Lead Mobile Engineer to drive the user-facing side of its mobile platform. In this role, the selected candidate will be responsible for designing and building high-performance iOS and Android applications, refining cross-platform frameworks, and crafting intuitive, secure, and trustworthy user interfaces.

This position also involves shaping software development kits (SDKs) and developer tools that enhance the core mobile application ecosystem. The ideal candidate possesses deep expertise in mobile development (specifically React Native), strong native iOS/Android knowledge, and sharp UX instincts. Experience shipping production-grade applications within the fintech or Web3/onchain domain is highly preferred, alongside a strong dedication to clean architecture, security, and reliability. The role requires end-to-end ownership of projects, transforming complex requirements into seamless, reliable workflows for both administrators and end-users.

Key Responsibilities

Our client is a high-growth fintech and Web3 technology company currently serving over two million users. Backed by top-tier venture capital firms, the organization has raised substantial Series B funding to scale its platform, expand product offerings, and maintain high engineering standards while accelerating development velocity.

The company is seeking an experienced, autonomous Staff Frontend Engineer to take ownership of its core mobile and web application surfaces. In this role, the engineer will drive critical frontend initiatives—including the rollout of new order types, support for additional asset classes (such as perpetuals and prediction markets), and the expansion of key social features.

The ideal candidate possesses deep mastery of React, operates effectively with a high degree of autonomy, and thrives in a fast-paced, in-person environment. While focused on frontend architecture, engineers are empowered to contribute across the stack whenever beneficial.

Requirements

About Octopus by RTG

Octopus by RTG is the tech hiring and outsourcing arm of Robusta Technology Group, dedicated to connecting exceptional tech talent with top-tier organizations across the MENA, GCC, Europe, the US, and Canada. We specialize in building strong, long-term partnerships between skilled professionals and innovative companies. Our mission is to empower growth, innovation, and excellence by matching the right talent with the right opportunities.

Job Overview

The Digital Marketing, CRM & Loyalty Lead will be responsible for driving app marketing initiatives, CRM and lifecycle marketing programs, loyalty operations, data analysis and reporting, and managing relationships with key vendors and stakeholders.

Location: New York, United States (Office)

On-Site | Full-time

Compensation: $250K - $300K

We are hiring on behalf of our client who is seeking a highly skilled and autonomous Staff Frontend Engineer to lead the technical evolution of its primary application surfaces. Our client provides an institutional-grade yet highly accessible trading application that abstracts away the complexities of on-chain operations—such as external wallets and bridging—enabling seamless, instantaneous asset access alongside advanced social trading features. Within its first year of operation, the platform has successfully onboarded over 500,000 users and executed more than $3.5 billion in total trading volume.

The successful candidate will join an elite, lean engineering organization comprised of crypto-native talent drawn from top-tier decentralized finance (DeFi) and digital asset protocols. This individual will take comprehensive ownership of both the mobile application architecture (developed with Expo) and the web application infrastructure (built utilizing React Router and Vite). As our client scales its core product offering to support novel order types, decentralized perpetuals, prediction markets, and sophisticated social layers, this role provides significant cross-stack flexibility and foundational architectural ownership.

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:

Staff React Native Engineer

Location: New York (Office)

On-site | Full-time

Compensation: Competitive

Our client is the development firm responsible for building and operating the full technology stack behind the world’s leading memecoin launchpad. These systems are engineered for low latency and high throughput, operating under constant load where precision is critical. As a React Native Engineer on the mobile team, the successful candidate will play a pivotal role in scaling a high-performance application that brings crypto and SocialFi to a global user base. This role requires working across the stack to craft seamless mobile experiences, shipping code rapidly, and iterating within a high-growth environment.

Key Responsibilities