Java Backend QA Engineer (White-box Focus)

 
 
we’re looking for a senior blockchain engineer to build low-latency execution infrastructure around hyperevm and hyperliquid-related trading systems.
 
this is not a frontend or dapp role. the focus is on real-time execution systems, chain-native infrastructure, and market-aware backend engineering where latency, ordering, and state correctness directly impact execution outcomes.
 
you will work on systems that operate under noisy, adversarial, and highly dynamic conditions, including delayed or missing websocket events, rpc inconsistencies, transaction lifecycle complexity, state desynchronization, retries, and recovery logic.
 
core responsibilities include building and maintaining realtime blockchain data pipelines, websocket and rpc streaming systems, execution orchestration layers, liquidity-aware routing logic, transaction lifecycle management, and integration with orderbook and market data systems.
 
we are specifically looking for engineers who think in systems rather than features. meaning understanding how data flows through pipelines, how state evolves over time, how failures propagate, and how to design systems that recover automatically without manual intervention.
 
areas of work include:
 
- realtime blockchain data ingestion
- mempool-aware execution flows
- transaction lifecycle handling
- execution sequencing and routing
- websocket and rpc infrastructure
- state synchronization systems
- liquidity and orderbook integration
- performance and latency optimization
 
you should be comfortable working with distributed systems, asynchronous event processing, and latency-sensitive backend architectures.
 
strong experience in one or more of the following areas is highly relevant:
 
- exchange infrastructure
- trading systems
- execution engines
- blockchain indexers
- realtime event systems
- arbitrage systems
- rpc/node infrastructure
- defi backend systems
- low-latency backend engineering
 
preferred technical stack:
 
- typescript / node.js
- go
- rust
- python
- postgres
- clickhouse
- redis
- kafka or similar messaging systems
- docker
- linux environments
- evm rpc internals
- websocket infrastructure
 
ecosystem familiarity:
 
- ethereum, arbitrum, base, optimism, bsc
- hyperliquid / hyperevm
- foundry
- ethers.js / viem
- geth / erigon / nethermind
- dex and amm mechanics
- liquidity math, slippage, gas strategy, routing logic
 
this role is not suitable for:
 
- frontend-only developers
- nft or basic dapp experience only
- tutorial-level web3 developers
- candidates without production systems experience
 
we value engineers who have built real systems where correctness, latency, and reliability matter under load. we care less about buzzwords and more about concrete systems you have personally built and operated.
 
ideal candidates can clearly explain:
 
- system architecture decisions
- bottlenecks and tradeoffs
- failure modes and recovery strategies
- latency considerations in real systems
- production debugging experience
 
working style:
 
- remote
- async-first
- low bureaucracy
- high ownership
- engineering-driven team
- direct technical communication
 
we strongly prefer practical engineering depth over polished presentation. if you have built or worked on systems involving realtime data, trading infrastructure, blockchain execution, or latency-sensitive backend systems, please include details of those systems when applying.
 

Mission:Emit immutable trade clones at the speed of mempools. Engineer on-chain vault + relay contracts that ingest master signals, laser-bridge them across EVM chains, and absorb slippage, MEV, and NFL Sunday-level volatility without exposing followers to liquidation contagion.
Stack & Level Requirements
Solidity 0.8.25+ via Foundry toolchain (Forge, Anvil, Cast) or Rust/Anchor on Solana
Proficiency: Huff / Yul inlines for gas micro-optimisations, EIP-712 signing, EIP-1167 minimal proxies
Cross-layer bridges: LayerZero, Wormhole, CCIP + custom relayers for <2 s finality
MEV-Geth style searchers – understand sandwich mechanics to architect commit-reveal patterned entry pools
Price oracles: Chainlink CCIP-read, Pyth, custom tick-level fallback for sub-$0.05 deviation error in volatility freak events
Security toolkit: Slither, Mythril, Echidna fuzz 1e6 vars/run, invariant bracelets as code
Gas profiling: forge-std Vm for on-chain gas snapshots pre-per-release hook
Hard-Check Trader DNA
⚔️ You have personally executed >$10 k notional on perpetuals & on-chain or cross-margined DeFi strategies with stress traces or Etherscan proof of addr.
⚔️ You’ve felt (or caused) impermanent loss >10 % in a single block.
⚔️ Optional but revered: vault or strategy on DeFiLlama/Apeboard with >$50 k TVL linked to your keys.
Responsibilities
Build gas-constrained e2e testnets atop Anvil mainnet fork for every release candidate.
Continuous white-hat review loop – both formal (Certora specs) & red-team bounty (Immunefi).
Coordinate with backend for off-chain signatures (EIP-712 typedData balancers).
Draft governance & upgrade timelocks (OpenZeppelin UUPS).
Be on-call for on-chain incidents (failed Oracle, stuck bridge, keeper tottering). with protocol parameters YAML files.
Soft Enemies – Don’t apply 
ifYou only deployed ERC-20 tokens and never** felt liquidation missiles.
You ignore MEV game theory.
Perks / Weapons Cache
Hardware fund: Apple M Max + 64 GB RAM, 10 Gbps fibre hookup.
Personal copy-trading gas allowance 1 k USD monthly – trade openly on testnet, share P&L in public.
Health stipend for red-eye debugging—includes premium dark-coffee & builder-milk.
Additional 1 % of inflation-scheduled supply upon achieving $100 m copy-AUM on ETH L2.
Apply Now
Attach:
Your latest CV. 
Etherscan link to your most brutal trading bot / vault (& TVL proof). 
GitHub repo (>20 stars) or archived PR of previous audited live contract address. 
Recorded deep-dive Loom of <180 s showing circuit breaker you built.
Cut-over: Applications stack-ranked & closed within 7 calendar days or when 3 offers signed—whichever happens first. Ready to ship settlement layer blood sport? 💥☠

I am looking for serious closer/affiliate to sell a proven digital product 
Offers :
 product price :$97 
Your cut : 50% ( $48 per sale ) 
Paid same day in USDT after proof of sale 
Why this converts: Beginner friendly "make money" angle
Clear outcom: generate 150+ USDT in 24h
no subcription/no API cost
Ready- to use- landing page
Your role: 
Promote your link 
Close deals ( Dms,network,clients)
Product : lead generation tool ( Google maps ) packaged as a "cash systeme" already tested strong-demand 
Number close 
5 sales/day = $240 day no cap
Looking for motivated sellers only .
Send "Ready" to get started

We are looking for an experienced AI video creator to produce high-impact marketing videos for our landing pages and website. The main goal is to drive conversions by showcasing our products/services with engaging, realistic AI-generated content.
Critical requirement:
Videos must feature ultra‑realistic AI human avatars (spokespersons) that are virtually indistinguishable from real people. Natural voiceovers, perfect lip‑sync, and professional quality are a must.
Preferred tools (but not limited to):
Creatify.ai, Synthesia, HeyGen, DeepBrain AI, or any other leading platform known for realistic AI human generation. Please specify which tools you are proficient in.

Marketing Performance Manager — Elements of a Soul
Location: Tbilisi, Georgia
Format: On-site · Full-time
Elements of a Soul (EOAS) is a Web3 MMORPG set in 2137, combining open-world gameplay, real Bitcoin mining integration, and an NFT-driven player economy.
We are looking for a Marketing Performance Manager to turn marketing performance data into clear growth decisions.
Key Responsibilities
Lead performance analytics and reporting
Set up tracking, build dashboards, define KPIs per KOL, cohort, channel, and campaign, manage UTM and on-chain attribution, run A/B tests, and translate data into actionable growth decisions.
Optimize campaign performance
Track paid, token-based, and performance-based partnerships, evaluate ROI, identify growth opportunities, and improve conversion from community attention to measurable results.
Support Web3 growth strategy
Contribute to campaign planning around NFT mints, token-related activations, whitelist campaigns, community growth, and player acquisition.
Requirements
Crypto/Web3 experience is a hard requirement
You have personally worked on or launched projects involving token launches, NFT mints, on-chain economies, Web3 communities, or crypto-native growth campaigns.
Deep Web3 fluency
You understand NFTs, tokens, tokenomics, P2E models, DAOs, crypto community behavior, and what drives trust, hype, engagement, and conversion in Web3 audiences.
Strong performance marketing background
3+ years of experience in performance marketing, ideally with proven results in crypto/Web3, community acquisition, or growth experiments.
Analytics-driven mindset
Analytics is part of your daily workflow. You are confident with platform analytics, Google Analytics, spreadsheets, A/B testing, campaign reporting, and performance optimization.
Nice to Have
These are not hard requirements, but they will make a candidate especially strong for this role:
Hands-on experience with NFT mints, OpenSea campaigns, token launches, tokenomics-based activations, or whitelist campaigns
Experience with crypto-native analytics tools such as Dune, Nansen, DappRadar, or similar platforms
Basic SQL or Dune query skills
Experience with automation tools such as n8n, Zapier, Make, CRM systems, or campaign tracking workflows
Experience in running KOL’s & Ambassador campaigns 
Gaming, Crypto, GameFi, or player community growth experience
What We Offer
Competitive compensation
Direct collaboration with the founders
Freedom to build the marketing performance function from scratch
Career growth path 
On-site work in Tbilisi with the core team
How to Apply
Please send:
CV (Marketing/Growth Portfolio would be an advantage)
Links to crypto/Web3 projects you have worked on, including your specific role and impact
An analytics, dashboard, reporting, or A/B test case study
Examples of KOL, ambassador, creator, or community growth campaigns with results (nice to have)
A short note on why EOAS interests you
Apply via: yulia@elementsofasoul.com