Application Security Engineer (AppSec)
Full time
Remote
Compensation is not specified
Role
Security Engineer
Description
Job Role: Core Developer - Polkadot Runtime
Parity, as a leader in the Polkadot and Substrate ecosystem, is dedicated to shaping a decentralized web that values individual freedom and data while enabling developers to innovate. The organization's drive is to establish a reality that prioritizes honest interactions over blind trust in the digital realm.
Parity stands out as a highly skilled blockchain infrastructure entity, known for spearheading cutting-edge advancements within the blockchain industry.
With a globally distributed remote team, Parity focuses on creating open-source technologies for developers and businesses to adopt and enhance. The Web3 technology stack comprises Polkadot, Substrate, and Kusama.
Key Attributes of Team Members:
- Display high motivation aligned with Parity’s mission.
- Thrive on challenging, innovative projects.
- Demonstrate autonomy balanced with effective collaboration.
- Embrace accountability and minimize ego at work.
- Adapt to the dynamic Web3 landscape with ease.
- Have a strong commitment to continuous learning within Parity and the broader ecosystem.
About the Polkadot Runtime Team:
The Polkadot Runtime team's duties encompass managing the business logic of Polkadot along with developing accompanying tools. This involves work on various areas like FRAME macros, XCM messaging formats, application bridges, and system architecture.
About the Role:
We are seeking new engineers to join the team with a focus on XCM and system test frameworks. Key responsibilities include:
- Crafting and implementing advanced protocols for Polkadot's protocol usage and application development.
- Tackling intricate, multi-chain challenges.
- Designing comprehensive test suites for assessing multi-chain applications.
Ideal Candidate Qualities:
Candidates should:
- Excel in independent problem-solving and self-driven work.
- Engage effectively in an open-source culture, adept at peer review processes.
- Demonstrate proficiency in system design and complexity handling.
- Exhibit ownership of their work, centralizing accountability for results and embracing feedback.
- Possess clear communication skills translating technical concepts effectively to non-expert audiences.
Perks of Joining Us:
- Competitive compensation packages following rigorous market evaluations, including token incentives where permissible.
- Enviable "future of work" setup supportive of remote flexibility and autonomy.
- An enthusiastic team committed to impactful projects.
- Exposure to leading industry experts to elevate Web3 knowledge and skills.
- Opportunities for professional growth within a dynamic ecosystem.
- Team and company retreats for cohesive bonding.
- Provision of work laptops.
- Possibility of relocating to Germany or Portugal with visa sponsorship.
Skills Required
Parity Technologies
Website
www.parity.ioCompany size
Not specified
Location
United States
Description
Not specified
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
Chief Business Development Officer (CBDO)
Full time
Remote
We're seeking an experienced Chief Business Development Officer to drive our growth strategy and establish key partnerships in the crypto/web3 space. As CBDO, you'll be responsible for identifying new business opportunities, building strategic relationships, and expanding our market presence globally.
Key Responsibilities:
Develop and execute comprehensive business development strategies aligned with company vision
Identify and pursue strategic partnerships, collaborations, and integration opportunities with protocols, exchanges, and web3 projects
Lead negotiations for high-value deals and partnerships
Build and maintain relationships with key stakeholders, investors, and industry leaders
Analyze market trends and competitive landscape to identify growth opportunities
Represent the company at conferences, events, and in the broader crypto community
Collaborate with product, marketing, and technical teams to align BD initiatives
Drive revenue growth through new channels and business models
Manage and mentor the business development team
Report directly to CEO on BD performance metrics and pipeline
Key Responsibilities:
Develop and execute comprehensive business development strategies aligned with company vision
Identify and pursue strategic partnerships, collaborations, and integration opportunities with protocols, exchanges, and web3 projects
Lead negotiations for high-value deals and partnerships
Build and maintain relationships with key stakeholders, investors, and industry leaders
Analyze market trends and competitive landscape to identify growth opportunities
Represent the company at conferences, events, and in the broader crypto community
Collaborate with product, marketing, and technical teams to align BD initiatives
Drive revenue growth through new channels and business models
Manage and mentor the business development team
Report directly to CEO on BD performance metrics and pipeline
Payment in Crypto
TA Quant
Quant Researcher Lead
Full time
Remote
Define research direction, manage the research team, and drive innovation in quantitative strategy development. You'll set the strategic vision for our quantitative research efforts, build and lead a world-class team of researchers, and ensure we maintain a competitive edge in increasingly sophisticated markets. This role requires exceptional track record in developing successful trading strategies, deep understanding of market dynamics across multiple asset classes, and proven leadership in building research organizations that consistently deliver alpha while fostering a culture of innovation and intellectual rigor.
Responsibilities:
Set research priorities and team roadmap
Lead and mentor the quantitative research team
Develop cutting-edge trading strategies and methodologies
Present research findings to leadership and stakeholders
Responsibilities:
Set research priorities and team roadmap
Lead and mentor the quantitative research team
Develop cutting-edge trading strategies and methodologies
Present research findings to leadership and stakeholders
Payment in Crypto
Mark Chainsaw
Quant / Engineer Prediction Markets
Full time
Remote
hiring Quants & Engineers - https://tally.so/r/pby6pE
We gift Claude Code Max 20x subscription (1-12 month) for successful referral
You must have heard about some of this projects: Polymarket, Kalshi, Opinion
We do:
- 15min crypto options market-making
- arbitrage with Binance
- insider-identifying directional bets
- mid frequency copy trading
- to be continued…
We value tier-1 engineers and quants.
Our team:
- worked in top tier high freq trading hedge funds (binance, okx, …)
- made infrastructure for onchain data (solana, base, hyperliquid, …)
- won IOI and kaggle competitions
We are ready to onboard 2 people to our team
Quant: research & improve strategies, backtest, reverse other traders
Engineer: making high performance data providers and trading engine
Nice to have some from you:
- Top tier education
- Understanding of MEV and onchain arbitrage/market-making
- Experience in trading, crypto or traditional markets
- Other relevant background
What we offer:
- Top market salary and profit sharing
- Unique and challenging tasks
- Strong team and growth
We gift Claude Code Max 20x subscription (1-12 month) for successful referral
You must have heard about some of this projects: Polymarket, Kalshi, Opinion
We do:
- 15min crypto options market-making
- arbitrage with Binance
- insider-identifying directional bets
- mid frequency copy trading
- to be continued…
We value tier-1 engineers and quants.
Our team:
- worked in top tier high freq trading hedge funds (binance, okx, …)
- made infrastructure for onchain data (solana, base, hyperliquid, …)
- won IOI and kaggle competitions
We are ready to onboard 2 people to our team
Quant: research & improve strategies, backtest, reverse other traders
Engineer: making high performance data providers and trading engine
Nice to have some from you:
- Top tier education
- Understanding of MEV and onchain arbitrage/market-making
- Experience in trading, crypto or traditional markets
- Other relevant background
What we offer:
- Top market salary and profit sharing
- Unique and challenging tasks
- Strong team and growth
Payment in Crypto