Code Review (IOS)

We are hiring Junior Market-Making Traders to operate and manage high-frequency liquidity strategies across spot and perpetual crypto markets. This is a prop-style trading seat: fast, technical, highly automated, and performance-driven.You will be trained directly by senior HFT and volatility traders, learning how to run Deltix-based strategies, manage risk in real time, and operate under true prop-desk conditions.
No prior experience is required — we will train the right candidates from the ground up.If you have 1–2 years of experience, great — but this role is not for senior traders. 
We want sharp, disciplined operators who want to grow into high-performance liquidity traders.
You will play a key role in maintaining 24/7 liquidity across global markets, working closely with our quant and infra teams to ensure our systems stay ahead of the market.
Key Responsibilities
Market Making & Strategy OperationRun and monitor HFT market-making systems across spot and perpetual markets.
Maintain competitive spreads and reliable liquidity at all times.
Adjust quoting behavior based on volatility and order-flow patterns.
Assist with hedging and inventory management across correlated instruments.
Deltix Trading SystemsOperate strategies in Deltix QuantServer, TimeBase, and StrategyRunner.
Identify issues quickly — stale quotes, latency spikes, disconnections, or risk throttles.
Work with senior traders and engineering to improve strategy logic and routing.
Real-Time Risk Management
Monitor exposure, leverage, and PnL across multiple venues.React quickly to regime shifts, volatility events, and fast markets.Ensure strategies stay within defined limits while maximizing performance.
Market Awareness & Execution SupportTrack liquidity, trends, microstructure shifts, and arbitrage signals.
Flag inefficiencies and opportunities in market behavior.Support coverage during market events, rapid volatility, and system upgrades.
Desk Coverage & Rotation
Participate in a 6-day rotation, including weekends.
Provide clean handovers between regions to ensure 24/7 liquidity.
What We’re Looking For
No experience required — we will train you intensively.
If experienced, max 1–2 years in trading, operations, quant, engineering, or similar.
Strong numerical, analytical, or technical aptitude.
High attention to detail and situational awareness — able to monitor multiple streams of data.
Ability to stay calm and decisive under pressure.
Hunger to learn, improve, and compete in a performance-driven environment.
Willingness to work weekends and operate in a disciplined 6-day schedule.
Nice to Have (Not Required)
Exposure to crypto markets, order books, or exchange mechanics.
Familiarity with Python, C#, C++, or trading systems.
Experience with Deltix, OMS/EMS tools, or market-making environments.
Compensation 
We offer true prop-firm style compensation, designed to reward discipline, precision, and growth
Competitive base salary
Aggressive PnL-based bonus with high upside
Opportunity to scale into more markets and larger risk limits as performance grows
Long-term incentives for top performers
This is a seat where sharp, disciplined talent can grow into high-earning, high-responsibility traders.

WhiteBridge-Ltd is a young and rapidly developing company working in the field of digital markets and analytics.
We bring together enterprising people who want to master modern approaches to trading, analysis and decision-making in a dynamic market environment.
We are currently looking for a Junior Crypto Analyst & Trader, a novice specialist who is ready to complete training, perform real trading operations and develop under the guidance of experienced mentors.
 
Your Responsibilities:
Execution and support of trading operations on digital markets.
Tracking asset dynamics and market trends.
Maintaining internal records on transactions and statistics.
Analyzing market data, news, and charts for decision-making.
Work with analytical tools and participate in discussions with a team of traders.
The gradual formation and improvement of your own trading strategy.
 
What We Offer:
Working for a young and growing international company.
Remote format — you can work from anywhere in the world.
Flexible schedule — up to 20 hours per week, it is convenient to combine with study or main activity.
Learning from scratch — all processes and trading tools are mastered with a mentor.
The opportunity for professional growth and transition to more advanced levels.
 
Ideal Candidate:
He is interested in digital assets and trading processes.
He is attentive to details and is able to analyze data.
He learns quickly and is ready to act in a dynamic environment.
Knows how to work independently and in a team.
Trading experience is not required — the desire to develop is important.

About the Role: 
We’re looking for an experienced Smart Contract Developer to join our remote team. You’ll be responsible for designing, developing, and deploying secure and efficient smart contracts for blockchain-based applications. The role involves close collaboration with other developers and product leads to bring new ideas to life. 
 
Key Responsibilities: 
- Design, write, and test smart contracts (Solidity)
- Review and optimize existing contracts for gas efficiency and security
- Integrate contracts with front-end or backend services via Web3
- Participate in code reviews, audits, and documentation
- Stay current with blockchain trends and best practices
 
Requirements: 
- Proven experience with Solidity, EVM-based blockchains, and related frameworks (Hardhat, Truffle, Foundry, etc.) 
- Good understanding of DeFi protocols, NFT standards (ERC-721/1155), or Layer-2 solutions
- Familiarity with smart contract security and testing methodologies
- Experience using GitLab, Git, and version control workflows
- Ability to work independently and communicate effectively in English
 
Nice to Have: 
- Background in cryptography, auditing, or backend development
- Contributions to open-source blockchain projects
 
What We Offer: 
- Fully remote and flexible working hours (team across EST, CET, GMT+2)
- Flexible payment options — including crypto payments (USDT, USDC) or traditional methods
- Collaborative and friendly international team 
- Opportunities to grow into lead or architecture roles

BitPay, Inc., founded in 2011, is the world’s leading blockchain (cryptocurrency) payments company. We serve top merchants across six continents, providing a seamless and secure cryptocurrency payments experience. BitPay builds powerful tools to accept, store, and spend cryptocurrency safely and efficiently.
We’re looking for a Senior Backend Software Developer to join our remote US-based team and help craft the next generation of innovative products. If you thrive on solving complex problems, building scalable systems, and staying ahead of technology trends, this role is for you.
What You’ll Do:
Develop scalable and maintainable backend systems using Node.js and MongoDB
Collaborate with cross-functional teams to build features for customers and internal tools
Ensure high code quality through unit, integration, and functional testing, code reviews, and thorough documentation
Address challenges in scalability, reliability, and logging during development
Mentor and guide other developers, fostering growth and knowledge-sharing
Stay up-to-date with emerging technologies to keep our team innovative and competitive 
What We’re Looking For:
5+ years of professional backend development experience
Expert in Node.js and MongoDB
Proven experience delivering production-ready APIs
Strong desire for continuous learning and process improvement
Track record of delivering high-quality software in professional environments
Passion for your craft, drive for progress, and commitment to excellence
Portfolio showcasing your work (e.g., GitHub)
Blockchain or fintech development experience
Highly Preferred: blockchain or fintech development experience
Bachelor’s degree in Computer Science or equivalent experience with notable projects
What We Offer:
Collaborate with a team of intelligent, enthusiastic individuals.
Thrive in a rapidly expanding crypto company with global reach, where your contributions make a tangible impact.
Work remote with a generous vacation policy, including the opportunity to take a sabbatical and select your own holidays.
Access to continuous learning and development opportunities, supported by professional development reimbursement.
Competitive salary package with comprehensive benefits, including fully covered medical and dental plans. We also offer telemedicine, life insurance, disability insurance, vision coverage, 401k, travel assistance, and more.
Option to receive payment in cryptocurrency, along with a crypto match program.
Stock option awards available to all employees.
Home office allowance, reimbursement for internet/cell expenses, complimentary Amazon Prime and Spotify subscriptions.
BitPay is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.
If interested, please apply here: https://bitpay.applytojob.com/apply/jobs/details/4eZJqEucfX

My project is about building a USDT-like token (ERC20/TRC20/BEP20) with: Peer to Peer transfers & Trade Escrow-based trading Real liquidity (not flashed) Liquidity optimization (max tokens with minimum backing) Please share: Your past DeFi/Blockchain projects How you handle liquidity optimization