---
title: 'Smart Contract QA Engineer, Atlas Oracle at Coin Market Cap Ltd'
canonical: 'https://feeny.ai/job/smart-contract-qa-engineer-atlas-oracle-coin-market-cap-ltd-global-nwc3k9y21s7m'
type: 'job'
last_seen: '2026-09-11'
---

# Smart Contract QA Engineer, Atlas Oracle at Coin Market Cap Ltd

- **Company:** Coin Market Cap Ltd
- **Location:** Global
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2025-12-19
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.lever.co/coinmarketcap/98dc4737-c43a-42cc-b542-29f559b351ed

## Job description

Core Responsibilities:

- Design and implement automated testing frameworks for oracle smart contracts, covering unit tests, integration tests, and end-to-end tests.
- Develop and execute security test cases, focusing on core scenarios such as price data feeds, off-chain data retrieval, multi-party consensus mechanisms, and resistance to Sybil attacks.
- Simulate various on-chain and network abnormal conditions (e.g., high Gas fees, network latency, node failures) to conduct stress testing and fault tolerance testing.
- Work closely with the development team to perform vulnerability scanning and assist in code audits before contract deployment, ensuring no critical security risks.
- Create and maintain clear test documentation, defect reports, and quality assessment reports.
- Participate in verifying the accuracy of oracle node data and conducting performance benchmarking.
- Continuously follow blockchain testing tools and best practices, and introduce new testing methodologies to enhance efficiency.

Requirements:

- Bachelor’s degree or higher in Computer Science, Software Engineering, or a related field.
- 3+ years of experience in smart contract testing or development, with proficiency in Solidity and mainstream testing frameworks (e.g., Hardhat, Truffle, Foundry).
- Deep understanding of oracle mechanisms (e.g., Chainlink, Band Protocol) and awareness of common attack vectors (e.g., flash loan attacks, data tampering).
- Familiar with fundamental blockchain concepts (consensus mechanisms, Gas optimization, event logs, etc.) and tools (e.g., Web3.js, Ethers.js).
- Capable of developing automated testing scripts using JavaScript/TypeScript, Python, or similar languages.
- Experience in security testing or code auditing is preferred, with knowledge of common vulnerabilities (e.g., reentrancy, integer overflow) and mitigation methods.
- Strong communication skills and a collaborative mindset, adaptable to agile development environments.

Preferred Qualifications:

- Hands-on experience in testing or developing oracle projects, with familiarity in decentralized data sources and node networks.
- Knowledge of zero-knowledge proofs, TEE (Trusted Execution Environment), and other privacy-related oracle technologies.
- Experience with performance testing tools (e.g., K6, Gatling) or on-chain monitoring tool development.
- Open-source contributions to blockchain projects on GitHub or demonstrable testing case portfolios.

## About Coin Market Cap Ltd

## Company Overview
- **One-liner**: CoinMarketCap is the world’s most trusted source for real-time cryptocurrency data, market capitalizations, pricing, and on-chain analytics.
- **Entity Type**: Private (acquired by Binance)
- **Headquarters**: Dover, Delaware, United States (registered); has remote-first operations across 47 countries
- **Founded**: May 2013
- **Founders**: Tran Van Hien (Co-Founder)

## Core Business
- **Industry**: Information Services / Cryptocurrency Data & Analytics
- **Target Customers**: Crypto traders, investors, institutions, media, and web3 developers (B2C, B2B)
- **Mission**: To accelerate the crypto revolution by organizing the world’s crypto intelligence and making it easily accessible to all.

## Products & Services
- **CoinMarketCap Website & Mobile App**: Flagship platform tracking 13M+ cryptocurrencies, ranked by market cap. Includes portfolio tracking, watchlists, and community features.
- **CMC API**: Public and Professional API endpoints for DEX data, market data, and on-chain analytics.
- **DexScan**: On-chain data tool covering 70+ blockchain networks with real-time security features and advanced filters.
- **CMC Academy**: Educational portal for learning about crypto and blockchain.
- **CMC Labs**: Startup accelerator for early-stage crypto projects.
- **Diamonds Loyalty Program**: Gamified rewards system for user engagement.
- **Market Indicators**: Fear & Greed Index, Altcoin Season Index, Token Unlocks, BTC ETF Tracker.
- **AI-Powered Tools**: TLDR summaries, Whitepaper Summaries, and Community Price Predictions.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed; acquired by Binance in April 2020 for **$400 million**.
- **Key Metric – Annual Revenue**: ~$22.1 million (Recent estimate from LinkedIn/BuiltIn).
- **Key Metric – Total Funding**: $5 million (Initial Coin Offering, 2022).
- **Notable Investors/Partners**: Parent company is Binance Digital Limited. Partners include major exchanges, media outlets (Forbes, Bloomberg, CNBC, U.S. government).
- **Growth Signals**:
  - Tracks over **13 million** cryptocurrencies (as of Feb 2025).
  - Surpassed **13.2 billion page views** in 2021.
  - Employs **181 people** across 47 countries.
  - 276,292 LinkedIn followers.
  - Over 65 active job openings as of 2026.
  - Achieved ISO 27001 and ISO 27701 certification (June 2026).

## Competitive Advantages
- **Trust & Credibility**: Widely cited by major news outlets and even the U.S. government for research and reports.
- **First-Mover Advantage**: Founded in 2013, it is the longest-running and most established price-tracking website in the crypto space.
- **Comprehensive Data**: Tracks 13M+ cryptocurrencies, offering the most extensive coverage.
- **Data Alliance**: Pioneered the DATA Alliance to promote transparency and accountability in crypto data.
- **Binance Backing**: As a subsidiary of the world’s largest crypto exchange, it has immense resources, network effects, and distribution.
- **ISO Certifications**: Recently achieved ISO 27001 (Information Security) and ISO 27701 (Privacy), giving them institutional-grade trust.

## Strategic Focus
- **Expansion of On-Chain & DeFi Data**: Continued investment in DexScan and DEX data endpoints.
- **AI & Automation**: Deepening AI integration (TLDR summaries, chatbots, Smart Contract QA).
- **Developer Ecosystem**: Growing API usage and developer-focused tools.
- **Community Engagement**: Scaling features like Community Sentiment, Price Predictions, and loyalty programs.
- **Globalization**: Maintaining a fully remote, distributed workforce across 47 countries.

## Why Work Here
- **Culture**: Described as "Hardcore" – results driven, fast learning, and passionate. The company emphasizes a DNA of talented, hardworking individuals.
- **Remote-First**: Most roles are remote/global, with hubs in Dubai, Hong Kong, and Singapore.
- **Compensation**: Competitive salary with the option to be paid in crypto.
- **Benefits**: Health insurance, flexible working hours, company-sponsored holidays, team-building activities.
- **Growth & Impact**: Opportunity to work on a product used by hundreds of millions of users and cited by global governments and media.
- **Engineering Focus**: Heavy investment in blockchain infrastructure, on-chain data, AI, and smart contract QA.

## Sources
1. [CoinMarketCap About Page](https://coinmarketcap.com/about/)
2. [CoinMarketCap Careers Page](https://coinmarketcap.com/jobs/)
3. [LinkedIn – CoinMarketCap](https://www.linkedin.com/company/coinmarketcap)
4. [Built In – CoinMarketCap Careers](https://builtin.com/company/coinmarketcap)
5. [Jobs at CoinMarketCap (Lever)](https://jobs.lever.co/coinmarketcap)

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