Sign InSign up

Candidates

Select roles
Type or select technologies
$0 - $120000+
English level

Candidate's location

Timezone: search by timezone the candidate is located in. Country/City: search by country or city the candidate is located in or willing to work in.

Oops! Seems you haven’t signed up

  • Use flexible search filters
  • Search among full list of engineers
  • Stay on top of new engineers
Free sign upSign In

204 anonymous candidates

QA

  • Ukraine, Vinnytsia
  • Less than 1 year
  • $48k ($4k / month)
  • Elementary
Core technical skills
Functional testing
JavaScript
Web3
API testing
User interviews
Achievements / Key results
• Optimised map functionality for faster rendering of 3k items • Developed new payment architecture using Stripe which generates core revenue • Designed and managed the internationalization of application for 6 languages • Reduced testing time by 5x by implementing infrastructure for writing integration tests
Considering roles
QA
FRONTEND
Ready to work
remotely
vinnytsia
kyiv
frankfurt am main
ithaca
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • qa

    May 2025 - Aug 20261 year 4 months

QA

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Vinnytsia
  • Less than 1 year
  • $12k ($1000 / month)
  • Advanced
Core technical skills
JavaS
manual testing
JavaScript
Web3
Docker
Functional testing
Achievements / Key results
• Redesigned existing system and decreased maintainability costs by 30% • Worked as tech lead in a high-load low-latency system that could serve over 200qps per cluster • Engineered many own tools like notification engine, performance tool for REST, database client. • Default unit-test code coverage on products I work on is 75%.
Considering roles
QA
MOBILE
FRONTEND
BACKEND
Ready to work
warsaw
dubai
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • QA

    Apr 2024 - current time2 years 7 months

junior

  • India, Rajkot
  • Less than 1 year
  • $2.6k ($217 / month)
  • Elementary
Core technical skills
Usability testing
Mobile testing
Web3
Mobile Design App
web3
Achievements / Key results
Redesigned existing system and decreased maintainability costs by 30% • Worked as tech lead in a high-load low-latency system that could serve over 200qps per cluster • Engineered many own tools like notification engine, performance tool for REST, database client. • Default unit-test code coverage on products I work on is 75%.
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • junior

    Jan 2026 - Feb 20262 months

    qa

    Mar 2000 - Jul 20022 years 5 months

    Senior

    Mar 1999 - Feb 20001 year

qa

5+

Popular candidate! Connected by 5+ companies

  • United States, Washington
  • 1-3 years
  • $12k ($1000 / month)
  • Upper intermediate
Core technical skills
e2e testing
DevOps
Web3
Mobile testing
Node.js
Achievements / Key results
ewa
Considering roles
FULL STACK
FRONTEND
MOBILE
BACKEND
DEVOPS
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • analyst

    Mar 2024 - current time2 years 8 months

Solana Blockchain Developer |Rust, Anchor, DeFi

5+

Popular candidate! Connected by 5+ companies

  • Sierra Leone, Freetown
  • 5+ years
  • $50.4k ($4.2k / month)
  • Advanced
Core technical skills
Solana
Rust
Node.js
React.js
Web3
PostgreSQL
TypeScript
Python
Algorithms / Data Structures
Achievements / Key results
I build production-grade Solana programs, DeFi protocols, and enterprise database systems — backed by 16 years of real delivery for the United Nations, Government of Sierra Leone, and Johns Hopkins University. My flagship project is AIM Protocol - a decentralized microfinance platform built on Solana using Rust and Anchor, enabling African farmers to access collateral-free micro-loans through on-chain credit scoring. Submitted to the Colosseum Frontier Hackathon 2026. Live at aim-protocol.vercel.app. What I build for clients: Solana smart contracts and programs (Rust, Anchor Framework) DeFi protocols: token creation, staking, lending, SPL tokens, PDAs Full-stack dApps with React, TypeScript, Supabase and wallet integration Python automation, AI chatbots, and LLM integrations Database architecture and administration (MySQL, Oracle, PostgreSQL) Web platforms and REST APIs (Node.js, React) Real track record: Won competitive international bid from Johns Hopkins University ($7,429 contract) Built database systems for UN agencies in Sierra Leone, recognised by the UN Ambassador Maintained 99% system uptime across 13 government units under the Office of the President Reduced enterprise processing errors by 99% at Airtel across a 20-country African operation I work GMT timezone - available across European and African business hours, and deliver while your US team sleeps. Currently available for new contracts. Response time: under 2 hours. If you need someone who has shipped real systems for demanding clients - not just tutorials - let's talk
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Freelance IT Consultant & Full-Stack Developer

    Jan 2021 - current time5 years 10 months

  • Systems Database Technician

    Oct 2016 - Dec 20182 years 3 months

  • Systems Developer

    Jul 2008 - Jan 20112 years 7 months

QA

5+

Popular candidate! Connected by 5+ companies

  • Japan, Kyoto
  • 3-5 years
  • $50k ($4.2k / month)
  • Advanced
Core technical skills
MySQL
Web3
DevOps
Docker
Smoke testing
Dfggg
Usability testing
jQuery
PostgreSQL
Redux
Python
React Native
GraphQL
Cypress
Human Interface Guidelines
Achievements / Key results
zxcvbnm
Considering roles
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • mentor

    Jan 2026 - Mar 20263 months

  • ffff

    May 1995 - Jun 19983 years 2 months

1

5+

Popular candidate! Connected by 5+ companies

  • India, 12 P S
  • Less than 1 year
  • $43.4k ($3.6k / month)
  • Pre intermediate
Core technical skills
111
13
Атоулаллала13
e2e testing
web3
Kafka
Neo4j
65865
MongoDB
Firebase
Web3
Responsive design
TypeScript
Functional testing
RabbitMQ
Achievements / Key results
fgfg
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • fgfg

    Feb 2001 - current time25 years 9 months

qa

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Lutsk
  • Less than 1 year
  • $2.4k ($200 / month)
  • Intermediate
Core technical skills
Web3
Manual testing
Mobile testing
Smoke testing
Usability testing
Achievements / Key results
3E
Considering roles
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • QA

    Feb 2001 - current time25 years 9 months

test

10+

Popular candidate! Connected by 10+ companies

  • India, Ooty
  • 1-3 years
  • $7.9k ($657 / month)
  • Pre intermediate
Core technical skills
Redux
Docker
Angular.js
Hibernate
MS SQL Server
Wireframing
RxSwift
React.js
TypeScript
Node.js
DevOps
Smoke testing
Usability testing
Functional testing
Web3
Achievements / Key results
qw
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • qwq

    Dec 2345 - current time-3829 months

гл

5+

Popular candidate! Connected by 5+ companies

  • United Kingdom, London
  • 1-3 years
  • $9k ($750 / month)
  • Pre intermediate
Core technical skills
DevOps
Cocoapods
Web3
RxSwift
web3
Achievements / Key results
gh
Considering roles
FULL STACK
FRONTEND
MOBILE
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • rg

    Jan 2001 - current time25 years 10 months

QA

35+

Popular candidate! Connected by 35+ companies

  • Ukraine, Lviv
  • 3-5 years
  • $2.4k ($200 / month)
  • Pre intermediate
Core technical skills
API testing
HTML & CSS
Web3
Web
Qa
jQuery
RxSwift
Smoke testing
Redux
Android
MongoDB
Functional testing
Black box testing
Vue.js
Achievements / Key results
jfksdjf;jspfj;lskf;lksjd sdfsdkfsdfjsdpjfsdfsd;kfjlskdjf'kdsjf\l;dskjf\;ldjs s;djf';ljg;kjsd'kgjs'kd;jg'sjg
Considering roles
DEVOPS
FRONTEND
QA
DATA SCIENCE
BACKEND
MOBILE
UI/UX DESIGN
PM
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • QA

    Apr 2004 - current time22 years 7 months

Junior Software Engineer

15+

Popular candidate! Connected by 15+ companies

  • India, Kochi
  • 1-3 years
  • $5k ($417 / month)
  • Advanced
Core technical skills
Blockchain
Web3
Node.js
Solidity
Go
Docker
Express.js
React.js
MongoDB
PostgreSQL
Achievements / Key results
Tokenization Platform: – Contributed to the development of tokenization modules and automated pair creation logic. – Assisted in researching and implementing EIP-2535 (Diamond Standard) to support a modular contract architecture. – Supported cross-chain functionality efforts through bridging research and smart contract testing. – Participated in deployment and contract verification processes across Ethereum and Polygon testnets. • Supply Chain Infrastructure Solution: – Collaborated on engineering Upgradable Smart Contracts utilizing the UUPS standard to ensure system maintainability. – Helped build a secure Blockchain Abstraction Layer to simplify transaction routing between the backend and distributed ledger. – Executed automated security audits using Slither, Mythril, and Echidna to help the team identify and fix vulnerabilities. • General Blockchain Frontend Integration: – Integrated Web3 libraries (Ethers.js / Web3.js) with React.js to connect decentralized protocols with user interfaces. – Authored comprehensive unit tests and deployment scripts to ensure codebase reliability before testnet migration. – Participated in architectural discussions for dApps, gaining hands-on exposure to CeDeFi compliance and scalability.
Considering roles
FULL STACK
BACKEND
FRONTEND
Ready to work
remotely
bengaluru
kochi
thiruvananthapuram
chennai
hyderabad
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Junior Software Engineer

    Aug 2025 - current time1 year 3 months

Senior Fullstack Developer

20+

Popular candidate! Connected by 20+ companies

  • Portugal, Lisbon
  • 5+ years
  • $72k ($6k / month)
  • Upper intermediate
Core technical skills
TypeScript
Python
Node.js
C++
React.js
Web3
Achievements / Key results
• Helped launch a 0→1 AI-powered video creation platform as one of the key engineers, contributing from early product architecture to MVP, beta testing with creators, and later public release. • Owned core real-time product functionality, including an infinite interactive canvas, WebSocket-based communication, collaborative editing logic, backend integrations, rendering workflows, and user-facing AI assistant integration. • Designed and integrated AI-driven product flows, including an LLM-based video generation agent in Python, connecting AI outputs with frontend UX, backend services, and final video rendering. • Built production-ready Web3 features for startup MVPs, including wallet-based authentication, on-chain payments, Solidity smart contracts, ERC-20 token/payment logic, MetaMask / WalletConnect integrations, and transaction lifecycle handling. • Worked in small high-ownership engineering teams, turning unclear product requirements into shipped features, improving technical architecture, and helping products move from prototype stage to real user validation.
Considering roles
FULL STACK
FRONTEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Senior Fullstack Developer

    Aug 2025 - current time1 year 3 months

  • Senior Fullstack Developer

    May 2024 - Jul 20251 year 3 months

  • Senior Fullstack Developer

    Jan 2024 - current time2 years 10 months

  • Frontend Developer

    Oct 2023 - Feb 20245 months

  • Frontend Developer

    Sep 2021 - Sep 20232 years 1 month

123

15+

Popular candidate! Connected by 15+ companies

  • United States, Washington
  • 1-3 years
  • $20k ($1.7k / month)
  • Pre intermediate
Core technical skills
111
Swift
SwiftUI
Web3
AWS
Achievements / Key results
wqwq
Considering roles
DEVOPS
Ready to work
remotely
10th of ramadan city
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • qw

    Feb 2001 - current time25 years 9 months

Blockchain Developer

20+

Popular candidate! Connected by 20+ companies

  • India, Pollachi
  • Less than 1 year
  • $25k ($2.1k / month)
  • Upper intermediate
Core technical skills
Solidity
MySQL
Blockchain
Python
Web3
Achievements / Key results
Built and deployed a decentralized lottery protocol on Ethereum using Chainlink VRF V2 Plus and Chainlink Automation with a full Foundry test suite Integrated smart contracts into a production blockchain storage platform during internship at Xinetee, handling real on-chain product registration and checkpoint recording Completed Cyfrin Updraft blockchain curriculum, one of the most rigorous smart contract development programs available
Considering roles
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Blockchain Development Intern

    Aug 2025 - Jan 20266 months

Some fascinating position

10+

Popular candidate! Connected by 10+ companies

  • Netherlands, Eindhoven
  • 5+ years
  • $121.5k ($10.1k / month)
  • Advanced
Core technical skills
Docker
manual testing
Blockchain
Java
Web3
Achievements / Key results
Some fascinating Achievements
Considering roles
BACKEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • `

    Aug 1929 - Mar 19311 year 8 months

Junior QA

10+

Popular candidate! Connected by 10+ companies

  • Armenia, Ddmashen
  • Less than 1 year
  • $4k ($333 / month)
  • Upper intermediate
Core technical skills
MySQL
Qa
qa
User interviews
AWS
Web3
Achievements / Key results
dd
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • ddd

    May 2024 - current time2 years 6 months

dewqada

15+

Popular candidate! Connected by 15+ companies

  • Germany, Frankfurt am Main
  • 1-3 years
  • $21.3k ($1.8k / month)
  • Pre intermediate
Core technical skills
Responsive design
SASS
MySQL
Web3
API testing
Achievements / Key results
dfsafdsfds
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • 21dfsadsadsa

    Feb 1999 - current time27 years 9 months

Junior QA

50+

Popular candidate! Connected by 50+ companies

  • United Kingdom, Luton
  • 1-3 years
  • $14.4k ($1.2k / month)
  • Advanced
Core technical skills
JavaScript
Java
PostgreSQL
Python
Django
Mobile testing
Manual testing
Machine Learning
Docker
Functional testing
Web3
Cypress
Usability testing
SDLC
API testing
Achievements / Key results
wertyuwertyuwerty
Considering roles
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • erty

    Jan 2025 - current time1 year 10 months

e

30+

Popular candidate! Connected by 30+ companies

  • United Kingdom, Edinburgh
  • 1-3 years
  • $11.1k ($926 / month)
  • Pre intermediate
Core technical skills
Redux
Smoke testing
Docker
Functional testing
Web3
Achievements / Key results
wer
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • er

    Jan 2332 - current time-3662 months
View 184 more candidates