Web3-backend

Full Stack Engineer

Croatia, Rijeka
5+ years
$72k ($6k / month)
Advanced

Core technical skills
Achievements / Key results: Innovative and results-driven software engineer with extensive experience designing, developing, and deploying secure, scalable, and high-performance solutions across web, mobile, and blockchain platforms. Skilled in backend architecture, smart contract development, and cloud-based systems, with a strong track record of delivering cutting-edge applications for high-profile clients. Adept at leading technology strategy, implementing robust security protocols, and optimizing development pipelines to achieve operational excellence. Passionate about leveraging advanced cryptography, zero-knowledge proofs, and modern frameworks to create reliable and forward-thinking software solutions.
Considering roles
Ready to work: remotely

sans

United States, New York
5+ years
$60.2k ($5k / month)
Pre intermediate

Core technical skills
Achievements / Key results: fuga ver vilicus pecco addo
Considering roles
Ready to work: remotely

anti

United States, New York
5+ years
$28.7k ($2.4k / month)
Elementary

Core technical skills
Achievements / Key results: capitulus adhaero tredecim rerum vado
Considering roles
Ready to work: remotely

unbearably

United States, New York
1-3 years
$74.5k ($6.2k / month)
Upper intermediate

Core technical skills
Achievements / Key results: cultellus minima abeo illo tersus
Considering roles
Ready to work: remotely

oof

United States, New York
Less than 1 year
$82.3k ($6.9k / month)
Pre intermediate

Core technical skills
Achievements / Key results: reprehenderit perspiciatis iure molestias arceo
Considering roles
Ready to work: remotely

Senior Frontend Engineer

Nigeria, Lagos
5+ years
$60k ($5k / month)
Upper intermediate

Core technical skills
Achievements / Key results: Crafting seamless experiences across screens — 9 years of turning complex problems into elegant, performant interfaces.
Considering roles
Ready to work: remotely

Senior Web3 Full Stack Engineer

Switzerland, Zürich
5+ years
$60k ($5k / month)
Advanced

Core technical skills
Achievements / Key results: Innovative and results-driven Senior Web3 & Full Stack Engineer with 7+ years of experience in blockchain development, decentralized applications (dApps), and full-stack engineering. Expertise in Next.js, Nest.js, Solidity, and Web3 integrations, building high-performance applications with a strong focus on security, scalability, and user experience. Proven track record in smart contract development, gas optimizations, DeFi protocols, and multi-chain interoperability. Adept at leading engineering teams, architecting secure, upgradeable smart contracts, and optimizing Web3 authentication workflows. Passionate about decentralized finance (DeFi), NFTs, and Layer 2 scaling solutions, continuously integrating the latest advancements in the blockchain ecosystem to drive technical excellence and innovation.
Considering roles
Ready to work: remotely

Software Engineer

Thailand, Sattahip
5+ years
$120k ($10k / month)
Intermediate

Core technical skills
Achievements / Key results: Software Engineer with 10+ years of experience in building scalable distributed systems. Expertise in blockchain technologies, particularly in Rust and TypeScript development.
Considering roles
Ready to work: remotely

Backend dev

Portugal, Porto
Less than 1 year
$24k ($2k / month)
Advanced

Core technical skills
Achievements / Key results: I produced a honeypot to monitor the companies resources and logs everything and used grafana for metrics. Everything was detailed in a overleaf report.
Considering roles
Ready to work: remotely

Blockchain Engineer

India, Bhopal
1-3 years
$20k ($1.7k / month)
Upper intermediate

Core technical skills
Achievements / Key results: yes i worked at sevral of startup
Considering roles
Ready to work: remotely

Senior Web3 Engineer

United States, Tallahassee
5+ years
$96k ($8k / month)
Advanced

Core technical skills
Achievements / Key results: Participated in building Rings protocol, which is the first defi application to allow the trade of perpetual options on chain without relying on oracles, raised $2M TVL.
Considering roles
Ready to work: remotely

Web3 Frontend Engineer

Nigeria, Abuja
3-5 years
$100k ($8.3k / month)
Upper intermediate

Core technical skills
Achievements / Key results: I conceptualized and Built Decatron Africa's first end-to-end real estate marketplace that aims to make real estate transactions as seamless as online shopping with features like 1. Automated rental agreement, with E signatures 2. Payment gateway implementation Paystack and Monnify 3. Property, agent and client location tracking with Google Maps and Google Routes API. and used websocket for real-time location update 4. Availability scheduling, and booking system Built an international trade Settlement system that was integrated with the Internet computer Blockchain with the following features 1. A cross-chain wallet, that supports tokens converting BTC, USDC, and ETH to its Internet Computer Protocol equivalent ckBTC, ckUSDC, and ckETH, which allows users to able to use any of these tokens in the ICP ecosystem. 2. On and Offramp capabilities, from crypto to Fiat and vice versa, to achieve this we integrated with payment Flutterwave 3. Automated Promissory note, and invoice generation. 4. Merchant checkout page integration via Iframe (this feature allowed for directly loading the merchant checkout page as an Iframe on how platform) Javascript postmessage API was used for this I am a natural leader. I currently building my startup, but since it's been difficult to raise funding I decided to get a Job for a couple of months, and if I like the job maybe a year to support myself, before going back to building my startup. I conduct user interviews a lot so I do know how to align products with user needs, as you can only really learn this by experience, I think this gives me an edge over the average Software engineer If you are looking for a freak to join your startup, someone who is obsessed with getting things done, who can learn and iterate quickly, who owns the project, who thinks and works like an entrepreneur. then I might be the guy you need.
Considering roles
Ready to work: remotely

Smart Contract Engineer

Ukraine, Odesa
5+ years
$84k ($7k / month)
Upper intermediate

Core technical skills
Achievements / Key results:  Joined public audit contests and contributed to secure web3 ecosystems.  Optimized DEX smart contracts and GameFi interactions; successfully identified and mitigated critical exploits, contributing to a 20% reduction in security breaches during competitive hackathons.  Enhanced security protocols and identified vulnerabilities in DeFi and GameFi ecosystems; secured top 3 placements in 5+ security contests, showcasing expertise in decentralized platforms. Achievement  Found 22 issue (13 High, 9 Medium) in 10x contests, 5 times Top 10,  Gamma Stacking: Awarded Bronze Medal, Panoptic Pool: Selected standard report Participated in web3 hackathon (CrossFinance) and won 6th position in DeFi domain.
Considering roles
Ready to work: remotely

Poland, Kraków
Less than 1 year
$12k ($1000 / month)
Elementary

Core technical skills
Achievements / Key results: csac
Considering roles
Ready to work: remotely

Senior Blockchain Full Stack Software Engineer

United States, Phoenix
5+ years
$120k ($10k / month)
Advanced

Core technical skills
Achievements / Key results: Successfully contributed to the development of Launch Legends and RetroCraft, two major projects that advanced blockchain innovation and decentralized application development. Delivered scalable and secure smart contract solutions on Ethereum and Solana, supporting NFT marketplaces and DeFi applications with millions of dollars in transaction volume. Spearheaded the implementation of cross-chain interoperability solutions, enhancing seamless asset transfer and collaboration between different blockchain networks. Played a pivotal role in developing zero-knowledge proof systems to improve privacy and efficiency in decentralized systems. Worked with top-tier companies like Ripple, where I contributed to blockchain-powered payment systems, streamlining cross-border transactions. Earned certifications in blockchain and cloud technologies, solidifying expertise in cutting-edge tools and protocols.
Considering roles
Ready to work: remotely

At quod sit vel ani

United Kingdom, Ewell
1-3 years
$50k ($4.2k / month)
Intermediate

Core technical skills
Achievements / Key results: 323
Considering roles
Ready to work: remotely

Expert Blockchain Full Stack Developer

India, Pune
3-5 years
$10k ($833 / month)
Intermediate

Core technical skills
Achievements / Key results: Worked on multiple blockchain projects for writing and deploying smart contracts, integrate them with there DApps.
Considering roles
Ready to work: remotely

Blockchain Developer

India, Cuttack
1-3 years
$45k ($3.8k / month)
Intermediate

Core technical skills
Achievements / Key results: Developed Secure and Scalable Smart Contracts: Designed and deployed multiple Solidity smart contracts with a focus on DeFi applications, ensuring robust performance and security measures through detailed testing using Hardhat and Foundry. Led Blockchain Integrations for DApps: Built decentralized applications that integrate seamlessly with Ethereum-based smart contracts, employing libraries such as ethers.js and web3.js to enhance functionality and user experience. Innovated with Chainlink VRF and CCIP: Successfully integrated Chainlink VRF for on-chain randomness and CCIP for cross-chain compatibility, enabling secure and versatile DeFi applications across multiple blockchain ecosystems. Built and Deployed Real-Time Transaction Reward System: Developed a reward system using Delta-X tokens for each wallet transaction, incorporating Alchemy WSS for wallet tracking and ensuring smooth cross-chain operations. Enhanced Blockchain and API Performance: Created efficient and low-latency APIs using REST and GraphQL, optimizing data access for high-performance blockchain environments using technologies like PostgreSQL, MongoDB, and Redis. Contributed to Winning Hackathon Project: Collaborated with team METABLOCKERS on the R2W3-II challenge to create Fluid Pass, a project enabling event access through crypto-based payments with Superfluid SDK, achieving a successful deployment and securing the top prize. Ensured Code Quality and Security Standards: Maintained high standards of code quality across blockchain and backend modules, implementing rigorous testing and security checks to safeguard DeFi applications against vulnerabilities. Ambassador for Web3 and Blockchain Community Growth: Actively contributed to the web3.js ambassador program by creating educational content, including blogs and guides, to support emerging blockchain developers in the community.
Considering roles
Ready to work: remotely

wq

Italy, Florence
Less than 1 year
$33.3k ($2.8k / month)
Pre intermediate

Core technical skills
Achievements / Key results: f3f3f3f
Considering roles
Ready to work: remotely

Senior Java Engineer

Thailand, Bangkok
5+ years
$66k ($5.5k / month)
Upper intermediate

Core technical skills
Achievements / Key results: • I have a pet project with more than 60k users • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU
Considering roles
Ready to work: remotely

Candidates

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Full Stack Engineer

sans

anti

unbearably

oof

Senior Frontend Engineer

Senior Web3 Full Stack Engineer

Software Engineer

Backend dev

Blockchain Engineer

Senior Web3 Engineer

Web3 Frontend Engineer

Smart Contract Engineer

Senior Blockchain Full Stack Software Engineer

At quod sit vel ani

Expert Blockchain Full Stack Developer

Blockchain Developer

wq

Senior Java Engineer

Coinbase

Binance

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