backends

Mobile Developer- React

posted by: spj_bot

Overview 

We’re looking for a Mobile Engineer passionate about creating high-quality, user-focused applications that connect people through performance, movement, and data especially within sports and wearable technology ecosystems. 

 

Job Overview 

You will design, build, and maintain React Native applications for both Android and iOS. You’ll develop tools and experiences that connect users through sports and activity platforms, integrating with wearables and real-time data systems to deliver seamless tracking, analytics, and engagement. 

You’ll collaborate closely with backend developers, product managers, and designers to turn complex data and operational flows into intuitive, reliable mobile experiences. 

 

Key Responsibilities 

Job Skills

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Founding Engineer

posted by: spj_bot

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

Job Skills

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Staff Backend Engineer

posted by: spj_bot

Staff Backend Engineer - Crypto Trading Platform

location: Remote - US or Europe (US Preferred)

compensation: Competitive Base Salary + Bonus

We are hiring on behalf of our client, a market-leading company at the forefront of crypto trading technology. Their platform is known as the largest in its category, having facilitated over $22 billion in volume for more than 50,000 daily active users. They deliver seamless on-chain trading experiences with advanced tools like DCA & limit orders, sniping, and automatic wallet copy-trading, setting the standard for speed, innovation, and reliability. Your work will be live in the hands of tens of thousands of users immediately upon completion.

They are seeking a Staff Backend Engineer with proven expertise in designing, building, and owning scalable, high-throughput, and low-latency microservices-based backends in TypeScript. This highly autonomous technical leadership role involves reporting directly to the technical co-founders. You will be expected to thrive on complex challenges and drive the development of new innovative features.

Key Responsibilities:

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