Senior Mobile Engineer, 0x
Matcha
$120-230k
+ Equity + ZRX tokens
APIs for Web3 finance
Be an early applicant
APIs for Web3 finance
201-500 employees
Be an early applicant
$120-230k
+ Equity + ZRX tokens
201-500 employees
Company mission
To create an infrastructure to support the growing emergence of the crypto economy.
Role
Who you are
- If you love React Native, smooth UI, strong system design, and crypto, this is your chance to build something millions will use
- 5+ years of mobile engineering experience with deep fluency in React Native and TypeScript
- Proven track record of shipping complex mobile apps - ideally from blank repo to App Store/Play Store
- Hands-on experience with modern RN patterns: custom hooks, Zustand/Recoil, Reanimated, FlatList, memoization, and performance profiling
- Experience working on crypto wallets or DeFi mobile products (e.g. Matcha, MetaMask, Safe, Uniswap, Phantom, Rainbow, Rabby, Backpack, etc.)
- You understand key management, signing flows, transaction UX, and Web3 connectivity (WalletConnect, EIP-155)
- Understanding of native modules and when to use them for crypto or performance-critical tasks (Objective-C, Swift, Java, Kotlin a plus)
- Strong debugging habits and comfort profiling on real devices across Android and iOS
- Familiarity with mobile CI/CD pipelines, incremental rollouts, and feature flagging
- Excellent collaboration and communication skills - you think out loud, stay calm under pressure, and embrace feedback
- A low-ego, ownership-driven approach to building great products with others
- Ability and willingness to attend two in-person team meet-ups per year anywhere in the world
- Nice to Have
- Knowledge of mobile security and key management best practices
- Prior native app development (iOS/Android)
- Familiarity with analytics pipelines and A/B testing on mobile
- Contributions to open source React Native or Web3 libraries
- You’ll thrive here if you…
- Think from the user’s perspective and enjoy building intuitive mobile flows
- Care about performance, quality, and testing as much as features
- Value collaboration over ego and own your work end-to-end
- Stay curious - you experiment, learn new tools, and keep up with React Native evolution
- Believe in crypto’s potential to make finance more open and fair
What the job involves
- Matcha is 0x’s DEX aggregator - helping users trade across multiple blockchains at the best prices with one simple interface
- We’re now building Matcha Mobile, a greenfield React Native app that will make decentralized trading as effortless on mobile as it is on web
- This is a foundational engineering role: you’ll own architecture, performance, and product experience end-to-end
- You’ll collaborate directly with design, backend, and product to shape how crypto trading feels in your hand
- Build and ship Matcha’s new React Native app for iOS and Android from the ground up
- Design robust architecture, state management, and in-app infrastructure (CI/CD, telemetry, feature flags)
- Implement high-performance mobile UX - snappy lists, smooth gestures, fast load times, and secure wallet flows
- Collaborate closely with design and product to prototype, iterate, and ship features quickly and safely
- Write clean, modern TypeScript and React Native code with proper typing, linting, and testing coverage (Jest, Detox/Maestro)
- Help define the mobile engineering culture - code reviews, pairing, testing discipline, and continuous performance tuning
- Contribute to open discussions on design trade-offs and product priorities with a user-first mindset
Our take
0x had its beginnings as a decentralized crypto exchange before its founders noticed a problem - while the apps built to facilitate crypto trading were functional, the user experience was usually terrible. 0x changed to become a decentralized exchange protocol instead, and provides a suite of APIs and tools so developers can build decentralized apps capable of competing with the likes of PayPal or Stripe for ease of use and functionality.
0x's product has wide appeal in the Web3 space and has grown a strong customer base including the likes of Coinbase, Robinhood and Polygon, and has a trading volume exceeding $125 billion. Having raised a large amount of capital in a 2022 funding round, it is focusing on expanding its team as well as its product range. While the crypto world is currently subject to intense volatility, 0x is enabling businesses to build apps and products that make the market more navigable. This will go a long way towards improving trust and stability in the sector.
Freddie
Company Specialist at Welcome to the Jungle
Insights
71% employee growth in 12 months
Glassdoor (5)
Company
Funding (2 rounds)
Apr 2022
$70m
SERIES B
Feb 2021
$15m
SERIES A
Total funding: $85m
Company benefits
- Meals: Lunch reimbursements for up to 3 days per week
- Communications expense: We cover wi-fi / cellphone expenses
- Coworking allowance: Coworking of your choice (Non-Bay Area)
- Mental wellbeing: Unlimited therapy sessions with Betterhelp
- Unlimited time-off: Take time away when you need it
- Home-office setup: Set up your dream home office with hardware of your choice
- Wellness benefits: Monthly allowance for gym memberships, massages, etc
- Health beenfits: Fully paid health plan. health allowance for international employees
- Meet IRL: Sponsored events, conferences, and team offsite anywhere in the world
Company HQ
SoMa, San Francisco, CA
Leadership
Will Warren
(Co-Founder & Co-CEO)After finishing a degree in Mechanical Engineering at UC San Diego, they went on to be a Los Almos National Laboratory Researcher. Before co-founding 0x Labs, they were the Technical Advisor at Basic Attention Token, where they advised on Ethereum smart contracts.
Amir Bandeali
(Co-Founder & Co-CEO)After finishing a Finance degree at the University of Illinois, they became a Trader at Chopper Trading and DRW. Initially, they held the position of CTo at 0x Labs, before becoming Co-CEO in 2020.
Salary benchmarks
We don't have enough data yet to provide salary benchmarks for this role.
Submit your salary to help other candidates with crowdsourced salary estimates.
Share this job
View 5 more jobs at 0x