Senior QA Engineer (Exploratory, Python), Trading Technologies

The Role
We are hiring a Senior Blockchain Developer to design and build smart contract systems across multiple client and internal projects.
You will work on a variety of blockchain applications - from DeFi protocols to tokenized systems and Web3 platforms - ensuring high standards in security, scalability, and architecture.
This is a senior-level, hands-on role with exposure to multiple products and industries.
What You’ll Do
Design, develop, and deploy smart contracts using Solidity
Implement token standards (ERC-20, ERC-721, ERC-1155) and custom logic
Build and maintain contract architectures across multiple projects
Ensure security, audit readiness, and upgradeability
Optimize gas usage and performance
Collaborate with backend and frontend teams for integrations
Participate in code reviews and technical decision-making
Contribute to documentation and internal best practices
What We’re Looking For
4+ years of experience in blockchain / smart contract development
Strong expertise in Solidity and EVM-based ecosystems
Experience with Ethereum and L2s (Polygon, Arbitrum, Optimism)
Solid understanding of smart contract security and vulnerabilities
Experience with Hardhat, Foundry, or similar frameworks
Strong software engineering fundamentals (testing, Git, CI/CD)
Ability to work across multiple projects and adapt quickly
Nice to Have
Experience with DeFi protocols, staking, or token economies
Experience working with auditors or security reviews
Familiarity with upgradeable contracts (proxy patterns)
Backend experience (Node.js / TypeScript)
Experience in client-facing or consulting environments
Tech Stack
Solidity · Ethereum · Polygon · Arbitrum
Hardhat / Foundry · Node.js · TypeScript
React · ethers.js · IPFS
Why Join
Work across a diverse portfolio of blockchain projects
Exposure to both client work and internal ventures
Opportunity to influence architecture and technical direction
Collaborative, globally distributed team
Fast-paced environment with continuous learning
What Success Looks Like
Secure, production-ready smart contracts delivered across projects
Successful audits with minimal critical issues
Scalable and reusable contract architectures
Strong collaboration with cross-functional teams
Consistent delivery across multiple initiatives
How to Apply
Please submit:
Resume or LinkedIn
GitHub profile (required)
Examples of smart contracts or blockchain project
Apply Directly:
https://rwahubassets.com/
Applications & Inquiries:
support@rwahubassets.com
Equal Opportunity
We value diversity and are committed to building an inclusive environment.

Currently, our team is working on crypto betting website development that is for old customer who lives in Luxembourg.
There are 7 developers in our team right now.
We just started Front-UI development but our current progress is getting slowly so we are looking for developers who has experience in Blockchain development.
For this project, you need to have proven experience in React, TypeScript, Node.js and Web3.js for Front-end Development or Solidity for Smart Contracts Development.
If you are interested, then we can discuss more details.
Thanks Regards. 

One More Game is looking for a Senior Blockchain Engineer to help build secure and scalable blockchain systems for our web3 gaming products. This role is focused on smart contract development, blockchain integration, and technical problem-solving in a remote, fast-moving environment. You will work closely with our engineering and product teams to design, build, test, and maintain blockchain features that support real users and game economies. ResponsibilitiesDesign, develop, test, and deploy smart contracts.Build secure and efficient blockchain integrations for web3 applications.Work with product and engineering teams to implement on-chain features.Review contract logic for performance, reliability, and security.Write clear technical documentation and testing coverage.Support debugging, maintenance, and upgrades for deployed contracts. Requirements3+ years of professional software engineering experience.Strong experience with Solidity and EVM-compatible blockchains.Hands-on experience with smart contract testing and deployment tools such as Foundry or Hardhat.Good understanding of blockchain architecture, wallets, transactions, and contract interactions.Experience building production blockchain applications.Strong communication skills and ability to work remotely. Preferred QualificationsExperience with GameFi, NFTs, DeFi, or Layer 2 solutions.Familiarity with backend or frontend integration for blockchain apps.Experience working in a remote startup environment. What to SubmitPlease include:GitHub profile.LinkedIn profile.A brief summary of your most relevant blockchain project.A short explanation of your role and technical contribution. About One More GameOne More Game is a US-based, fully remote company building blockchain-powered gaming infrastructure and digital experiences.

The project is being developed around a Web3 trading infrastructure platform. As part of our long-term vision, the UK team at Iress is building a scalable, secure, and production-ready platform for trading, staking, and DeFi functionality. To support this effort, we are looking for experienced blockchain developers who can contribute to smart contract development, architecture, security, and overall platform implementation. We are currently in the team-building phase and identifying developers whose experience aligns with the technical requirements of the project. Selected candidates will be invited to discuss the project roadmap, responsibilities, and collaboration model with the UK technical leadership team.

About the Role
We’re looking for a hands-on Business Development Manager who can help Schedar build strategic relationships across the AI, Web3, crypto, infrastructure, and startup ecosystem.
This is not a “send cold messages and collect logos” role. We need someone who can identify high-value founders, protocols, funds, ecosystem partners, communities, infrastructure providers, KOLs, accelerators, and technical teams — then turn those relationships into real opportunities for collaboration, deal flow, partnerships, talent, and growth.
You’ll work directly with Schedar’s team, founders, portfolio-related projects, and external ecosystem partners to expand Schedar’s network and support early-stage AI-native and Web3 products.
What You’ll Own
Identify and source high-potential startups, founders, projects, protocols, and ecosystem partners across AI and Web3
Build relationships with founders, operators, investors, accelerators, developer communities, protocol ecosystems, KOLs, and strategic partners
Create and manage outbound BD pipelines across LinkedIn, Telegram, X, email, Discord, events, and founder communities
Support Schedar’s deal flow by discovering early-stage AI-native and Web3 projects that may be relevant for investment, incubation, or collaboration
Build partnership opportunities for Schedar-backed and incubated projects
Map key ecosystems, communities, events, accelerators, grants programs, and founder networks
Qualify inbound and outbound leads based on relevance, stage, traction, team quality, technical depth, and strategic fit
Coordinate intro calls, follow-ups, partner conversations, and relationship tracking
Maintain CRM hygiene and structured notes on founders, projects, partners, and opportunities
Work with product, growth, recruiting, and investment teams to turn ecosystem relationships into actionable outcomes
Help represent Schedar in online communities, events, founder groups, and partner conversations
What We’re Looking For
Experience in business development, partnerships, ecosystem growth, venture scouting, startup operations, community, sales, or founder relations
Strong interest in AI, Web3, crypto, blockchain infrastructure, developer tools, automation, fintech, or frontier technology
Ability to identify high-signal people, projects, and communities before they become obvious
Comfortable doing direct outreach and building relationships from scratch
Strong communication skills and ability to explain Schedar’s value clearly to founders, partners, and technical teams
Ability to qualify opportunities, ask good questions, and understand what makes a project strategically relevant
Comfortable working in a fast-moving, ambiguous, remote-first environment
Strong follow-up discipline, CRM organization, and ownership over relationship pipelines
Ability to move between strategy and execution in the same day
High agency, curiosity, and bias toward action
Nice to Have
Existing network across Web3, AI, crypto, venture, startup, developer, or founder communities
Experience working at a VC fund, accelerator, startup studio, crypto exchange, protocol foundation, or early-stage startup
Understanding of DeFi, wallets, L1/L2 ecosystems, infrastructure, token incentives, on-chain analytics, decentralized compute, or AI agents
Experience with tools like Notion, Airtable, HubSpot, Attio, Clay, Apollo, Telegram, Discord, X, LinkedIn, or similar
Experience sourcing startups, founders, investment opportunities, or strategic partnerships
Experience organizing founder intros, ecosystem collaborations, demo days, events, or community partnerships
Ability to write clear outreach messages, partner briefs, founder notes, and follow-up summaries
Multilingual ability or strong network in Asia, Europe, MENA, or global Web3 markets is a plus
You Might Be a Fit If
You enjoy building relationships before there is a clear playbook
You can spot strong founders and interesting technical projects early
You are comfortable talking to founders, investors, developers, community leads, and ecosystem partners
You don’t just network — you turn conversations into structured next steps
You understand that BD in early-stage ecosystems is about trust, timing, relevance, and follow-through
You are curious about AI-native products, Web3 infrastructure, decentralized compute, developer tools, and new digital primitives
You like working close to founders and helping early products find the right partners, users, investors, and talent
You care about speed, ownership, and measurable relationship outcomes
Why Join Schedar
Work at the intersection of AI, Web3, venture capital, and early-stage company building
Collaborate directly with founders, technical builders, investors, and ecosystem leaders
High ownership over Schedar’s partnership and ecosystem development
Remote-first and flexible setup
Exposure to Schedar’s portfolio, network, and technical ecosystem
Opportunity to help discover and support new primitives for the digital economy
Build relationships across some of the most interesting AI-native and Web3 communities globally
Compensation
Competitive compensation based on experience, scope, and role structure. Performance-based incentives, success-based bonuses, equity/token exposure, or project-based upside may be available depending on the specific engagement model.