Security Development Engineer - Middleware Platform
Singapore
Full time
Office
Compensation is not specified
Role
Security Engineer
Description
Who We Are
OKX believes in reshaping the future through technology. Established in 2017, we are at the forefront of driving innovation in global systems with our state-of-the-art digital asset exchange, Web3 platform, and blockchain landscapes. Through our diverse range of cutting-edge products, solutions, and trading tools, we are transforming the financial landscape. Trusted by over 50 million users across 180 countries, OKX empowers individuals to delve into the world of Web3. Our commitment to innovation and a broad spectrum of offerings envisions a future of financial accessibility supported by blockchain and decentralized finance.
We are renowned for our innovative approach, socially responsible initiatives, and emphasis on diversity and inclusion, fostering long-term value creation within the industry. Join us and be part of shaping the future!
About the Opportunity
The middleware team is key to maintaining the core infrastructure of OKX, ensuring a stable architecture for the engineering community to enhance coding capabilities in a secure environment. Composed of passionate individuals dedicated to leveraging technology to enhance OKX's coding environment, the team aims to provide lasting benefits to our users and customers.
What You'll Be Doing
- Design and develop an internal Data Loss Prevention system (DLP) incorporating features like sensitive data identification, data classification, flow monitoring, and more
- Manage the existing Host-based Intrusion Detection System (HIDS) through development and maintenance
- Work closely with the Security Operations team to address any issues related to DLP and HIDS systems during emergency response to risk events
- Keep abreast of the latest technological trends in information security to enhance the team's technical competencies
What We Look For In You
- Bachelor's degree or higher in computer science, information security, or related fields
- Proficiency in information security with experience in developing security products and familiarity with tools like DLP, IDS/IPS, EDR, UEBA
- Strong development skills in Objective-C, Swift, and familiarity with Java (Springboot), Python, or Golang
- Knowledge of widely used middleware such as MySQL, Redis, and Kafka
- Excellent teamwork and communication abilities
Perks & Benefits
- Competitive total compensation package
- Learning & Development programs, and Education subsidy for personal growth
- Team building activities and company events
- Wellness and meal allowances
- Comprehensive healthcare coverage for employees and dependents
- Additional perks to be discussed during the process
Skills Required
OKX
Website
www.okx.comCompany size
Not specified
Location
United States
Description
Not specified
gigi dalesio
Ищем менеджера по разработке веб-дизайну веб-сайтов.
Full time
Remote
управлением командой веб-разработки.
Выбранный кандидат будет отвечать за:
Формирование и координацию команды
Разработку веб-сайтов
Веб-дизайн
Управление и организацию цифровых проектов
Требования:
Опыт в разработке веб-сайтов
Навыки в области веб-дизайна
Умение работать самостоятельно
Предлагаю:
Сотрудничество в развивающемся проекте
Возможности профессионального роста
Вознаграждение обсуждается в зависимости от компетенций
Выбранный кандидат будет отвечать за:
Формирование и координацию команды
Разработку веб-сайтов
Веб-дизайн
Управление и организацию цифровых проектов
Требования:
Опыт в разработке веб-сайтов
Навыки в области веб-дизайна
Умение работать самостоятельно
Предлагаю:
Сотрудничество в развивающемся проекте
Возможности профессионального роста
Вознаграждение обсуждается в зависимости от компетенций
Payment in Crypto
Ismail Ahmad
Senior iOS developer for GameDev startup
Full time
Remote
Game Concept: “Reflex Arena”
Genre
Real-time competitive 1v1 / 2v2 skill-based action game
Platform
iOS (iPhone first, iPad optional)
Core Idea
A pure skill game where players compete in short, intense arena matches using precision timing, reflexes, and positioning — no RNG, no pay-to-win.
Each match lasts 60–90 seconds, making it ideal for mobile sessions while supporting competitive depth.
Core Gameplay Loop
Matchmaking
Skill-based MMR
Ranked & unranked queues
Arena Match
Small symmetrical arena
Players control a single character
Objective: score points by outplaying, not overpowering
Score & Progress
Win → rank up
Lose → learn (clear replay & stats)
Cosmetics only progression
Controls (Mobile-First, High Precision)
Left thumb: Movement (virtual joystick)
Right thumb: Aim + action swipe
Tap: Ability activation
Perfect timing windows reward precision (parries, counters)
👉 Designed to feel closer to a fighting game than a casual mobile title.
Mechanics (Skill > Stats)
Core Mechanics
Dash with cooldown (positioning skill)
Timed parry (frame-perfect defense)
Charged shots (risk vs reward)
Combo chaining (execution mastery)
No Randomness
Fixed damage
Fixed cooldowns
No crit chance
No loot boxes
Competitive Depth
Skill Expression
Reaction time
Prediction & mind games
Spacing & arena control
Cooldown tracking
Skill Ceiling
Easy to learn (1 minute)
Hard to master (1000+ matches)
Game Modes
Ranked Duel (Main Mode)
1v1
Best of 3 rounds
Seasonal leaderboard
Team Arena
2v2 coordinated play
Shared objectives
Training / Practice
Frame timing visualizer
Ghost replays of top players
Visual Style
Clean, minimalistic sci-fi arenas
High contrast for readability
60–120 FPS target (ProMotion)
👉 Performance clarity > visual noise.
Monetization (Fair & Competitive)
Skins (characters, arenas, effects)
Emotes / victory poses
Battle pass (cosmetic only)
🚫 No power boosts
🚫 No energy timers
🚫 No loot RNG
Technical Design (iOS-Optimized)
Native Swift
Metal / SpriteKit
Deterministic simulation
Server-authoritative logic
Rollback netcode (if real-time PvP)
Genre
Real-time competitive 1v1 / 2v2 skill-based action game
Platform
iOS (iPhone first, iPad optional)
Core Idea
A pure skill game where players compete in short, intense arena matches using precision timing, reflexes, and positioning — no RNG, no pay-to-win.
Each match lasts 60–90 seconds, making it ideal for mobile sessions while supporting competitive depth.
Core Gameplay Loop
Matchmaking
Skill-based MMR
Ranked & unranked queues
Arena Match
Small symmetrical arena
Players control a single character
Objective: score points by outplaying, not overpowering
Score & Progress
Win → rank up
Lose → learn (clear replay & stats)
Cosmetics only progression
Controls (Mobile-First, High Precision)
Left thumb: Movement (virtual joystick)
Right thumb: Aim + action swipe
Tap: Ability activation
Perfect timing windows reward precision (parries, counters)
👉 Designed to feel closer to a fighting game than a casual mobile title.
Mechanics (Skill > Stats)
Core Mechanics
Dash with cooldown (positioning skill)
Timed parry (frame-perfect defense)
Charged shots (risk vs reward)
Combo chaining (execution mastery)
No Randomness
Fixed damage
Fixed cooldowns
No crit chance
No loot boxes
Competitive Depth
Skill Expression
Reaction time
Prediction & mind games
Spacing & arena control
Cooldown tracking
Skill Ceiling
Easy to learn (1 minute)
Hard to master (1000+ matches)
Game Modes
Ranked Duel (Main Mode)
1v1
Best of 3 rounds
Seasonal leaderboard
Team Arena
2v2 coordinated play
Shared objectives
Training / Practice
Frame timing visualizer
Ghost replays of top players
Visual Style
Clean, minimalistic sci-fi arenas
High contrast for readability
60–120 FPS target (ProMotion)
👉 Performance clarity > visual noise.
Monetization (Fair & Competitive)
Skins (characters, arenas, effects)
Emotes / victory poses
Battle pass (cosmetic only)
🚫 No power boosts
🚫 No energy timers
🚫 No loot RNG
Technical Design (iOS-Optimized)
Native Swift
Metal / SpriteKit
Deterministic simulation
Server-authoritative logic
Rollback netcode (if real-time PvP)
Payment in Crypto
Ahn Nahm
Rust/blockchain
Houston, USA
Houston, USA
Part time
Remote
I am seeking a world-class Systems Engineer / Rust Architect to build a proprietary asset extraction engine on the Solana network. This is not a "Web3 App" or a "DEX UI." This is a purely backend, low-latency machine designed to capture micro-value from market volatility.The system mimics a "digital sluice," using high-precision math to harvest fractional differences that standard rounded-math bots ignore. We are scaling from a prototype to a 30-node distributed network managing 100+ concurrent execution "hands."Core Technical RequirementsLow-Level Rust Mastery: You must be an expert in the Tokio runtime, asynchronous programming, and memory-safe mathematical operations.Solana Network Physics: Deep understanding of the Sealevel runtime, custom WebSocket/Lumen bridges, and avoiding gRPC bottlenecks.Jito & MEV Optimization: Proven experience with Jito Bundles, transaction shredding, and tip-optimization to ensure first-block inclusion.Distributed Orchestration: Ability to architect a master-node system that manages 30+ regional nodes with seamless failover and zero-loss state management.Precision Math: All logic must operate on u64 integers (Lamports) to avoid floating-point rounding errors. We do not "round" to the dollar; we capture the 9th decimal.Key ResponsibilitiesEngine Hardening: Audit and optimize the core Rust logic for 0-latency execution.Node Orchestration: Build the "Master Switch" to deploy, monitor, and update 30 nodes across global regions simultaneously.The "Tax" Logic: Implement a secure, automated "sweeper" protocol that collects fractional value from all child-nodes into a master treasury without interrupting execution.Redundancy: Ensure the system is "Anti-Fragile"—if a validator or node fails, the 50-drop safety protocol must trigger an instant failover.
Payment in Crypto
TA Quant
Frontend Developer
Full time
Remote
Create intuitive, responsive user interfaces that deliver exceptional user experiences across our platform. You'll transform designs into pixel-perfect, performant applications while ensuring smooth interactions and real-time data visualization. We're looking for developers who are passionate about user experience, have an eye for design details, and can build complex web applications that handle large datasets efficiently while maintaining responsive, accessible interfaces across all devices and browsers.
Responsibilities:
Build responsive, performant web applications
Implement designs with attention to UX detail
Integrate with backend APIs and manage application state
Ensure cross-browser compatibility and accessibility
Responsibilities:
Build responsive, performant web applications
Implement designs with attention to UX detail
Integrate with backend APIs and manage application state
Ensure cross-browser compatibility and accessibility
Payment in Crypto
TA Quant
LEAD Backend Engineer
Full time
Remote
Lead the architecture and development of our core backend systems, ensuring scalability, reliability, and performance across all services. You'll be responsible for making critical technical decisions, establishing engineering standards, and building systems that can handle massive scale. This role requires deep expertise in distributed systems, database design, and modern backend technologies, along with strong leadership skills to guide and mentor the engineering team.
Responsibilities:
Design and implement scalable backend architecture
Lead technical decisions and mentor backend team members
Optimize system performance and ensure high availability
Establish best practices for code quality and deployment
Responsibilities:
Design and implement scalable backend architecture
Lead technical decisions and mentor backend team members
Optimize system performance and ensure high availability
Establish best practices for code quality and deployment
Payment in Crypto