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

132 anonymous candidates

qa

  • Brazil, Ererê
  • 1-3 years
  • $204k ($17k / month)
  • Pre intermediate
Core technical skills
Python
GraphQL
Blockchain
Design thinking
Hibernate
Achievements / Key results
I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU
Considering roles
PM
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • qa

    Feb 2001 - Jan 2001

Software Engineer

  • Cameroon, Douala
  • 5+ years
  • $20k ($1.7k / month)
  • Intermediate
Core technical skills
Express.js
React.js
React Native
Node.js
AWS
Python
PostgreSQL
Solidity
Blockchain
Firebase
Achievements / Key results
• Created a Back-end script for email campaign • Developed a mobile application for a ride sharing company • Created NFT collection with smart contract for company • Created telegram and discord bot for some customer • Integrated PayPal and Stripe payment for e-commerce website • Created API for a company to let front-end developer to connect on it a make user experience great
Considering roles
FULL STACK
BACKEND
FRONTEND
MOBILE
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Full Stack Developer

    Aug 2024 - Apr 20259 months

  • CTO

    Feb 2023 - May 20241 year 4 months

  • Web3 developer

    Oct 2021 - Aug 202211 months

Blockchain Developer

  • Poland, Lublin
  • 5+ years
  • $60k ($5k / month)
  • Advanced
Core technical skills
Blockchain
React.js
TypeScript
JavaScript
Node.js
Express.js
Solidity
Rust
Solana
Python
Django
Flask
C#
.Net
ASP.NET
Achievements / Key results
Blockchain, AI, and Full-Stack Engineer with 6+ years of experience delivering production-grade smart contracts, DeFi protocols, and AI-powered trading platforms across EVM and Solana ecosystems. Successfully improved trading workflow efficiency by 25%, platform scalability by 35%, and gas optimization by 12% through innovative system designs. Specialized in Solidity, Rust, MERN stack, and AI model deployment on AWS, with a strong focus on scalability, security, and performance optimization in Web3-native infrastructure. -> Make the trading platform like pump.fun -> Fork the Uniswap and customize it with adding new swap fee -> Solana staking & farming mechanism
Considering roles
FULL STACK
FRONTEND
BACKEND
DATA SCIENCE
PM
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Full-Stack AI Engineer

    Mar 2024 - current time1 year 4 months

  • Blockchain Developer

    Sep 2022 - Feb 20241 year 6 months

  • Smart Contract Engineer

    Jun 2018 - Aug 20224 years 3 months

k

  • United Kingdom, York
  • 1-3 years
  • $3k ($250 / month)
  • Pre intermediate
Core technical skills
UIKit
Automation testing
Blockchain
Smoke testing
Usability testing
Achievements / Key results
jij
Considering roles
FRONTEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • j

    Feb 2000 - current time25 years 5 months

senior

  • India, Chennai
  • 1-3 years
  • $3k ($250 / month)
  • Elementary
Core technical skills
RxSwift
Blockchain
Redux
Solidity
Smoke testing
Achievements / Key results
DC
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • D

    Jan 2000 - current time25 years 6 months

senior

  • United States, Chicago
  • 1-3 years
  • $3k ($250 / month)
  • Pre intermediate
Core technical skills
RxJava
Blockchain
Functional testing
Smoke testing
PostgreSQL
Express.js
Responsive design
Vue.js
Node.js
React.js
JSP
Usability testing
MS SQL Server
Angular.js
manual testing
Achievements / Key results
ddd
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • senior

    Feb 2000 - current time25 years 5 months

Senior

  • Poland, Kraków
  • 1-3 years
  • $12.3k ($1k / month)
  • Pre intermediate
Core technical skills
Gffdssdsdsljhffffdddd
AWS
manual testing
SASS
Blockchain
API testing
Achievements / Key results
sdfg
Considering roles
FRONTEND
MOBILE
QA
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • sdfghj

    Mar 2009 - current time16 years 4 months

j

  • India, Ujjain
  • 1-3 years
  • $4.6k ($380 / month)
  • Pre intermediate
Core technical skills
Solidity
Functional testing
Blockchain
PHP
GraphQL
Achievements / Key results
b
Considering roles
FULL STACK
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • g

    Mar 2015 - current time10 years 4 months

Qa

  • Poland, Kraków
  • 1-3 years
  • $2.5k ($208 / month)
  • Pre intermediate
Core technical skills
Java
Kafka
Blockchain
TypeScript
MySQL
Achievements / Key results
hjhnkj
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • hjj

    Mar 2024 - current time1 year 4 months

SAX

5+

Popular candidate! Connected by 5+ companies

  • Canada, Québec City
  • 1-3 years
  • $5k ($417 / month)
  • Pre intermediate
Core technical skills
GraphQL
Java
Blockchain
Functional testing
Angular.js
Achievements / Key results
SAX
Considering roles
FRONTEND
MOBILE
BACKEND
QA
UI/UX DESIGN
DATA SCIENCE
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • S

    Jun 2022 - current time3 years 1 month

QQA

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Kyiv
  • 5+ years
  • $2.4k ($201 / month)
  • Advanced
Core technical skills
PHP
Hibernate
Blockchain
Java
Python
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

  • QA

    Feb 2009 - current time16 years 5 months

Senior Web3 Engineer

10+

Popular candidate! Connected by 10+ companies

  • United States, Tallahassee
  • 5+ years
  • $96k ($8k / month)
  • Advanced
Core technical skills
Blockchain
Web3
Solidity
JavaScript
TypeScript
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
FULL STACK
FRONTEND
BACKEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Senior Software Engineer

    Jul 2022 - current time3 years

Hgag

5+

Popular candidate! Connected by 5+ companies

  • Poland, Warsaw
  • 3-5 years
  • $5k ($417 / month)
  • Upper intermediate
Core technical skills
User Personas
GraphQL
Blockchain
Functional testing
Angular.js
Usability testing
Machine Learning
Regression testing
Typography
Ad Hoc testing
Algorithms / Data Structures
Multithreading
Human Interface Guidelines
React Native
Achievements / Key results
Fvtvtvvt
Considering roles
FRONTEND
MOBILE
BACKEND
Ready to work
remotely
warsaw
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • Gggvb

    Feb 1925 - current time100 years 5 months

asd

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Lviv
  • 1-3 years
  • $6k ($500 / month)
  • Advanced
Core technical skills
GraphQL
Blockchain
Functional testing
Angular.js
React Native
Achievements / Key results
,
Considering roles
FULL STACK
Ready to work
remotely
lviv
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • asd

    May 1930 - current time95 years 2 months

1

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Lviv
  • 5+ years
  • $5k ($417 / month)
  • Pre intermediate
Core technical skills
manual testing
Java
GraphQL
Blockchain
Functional testing
Achievements / Key results
фів
Considering roles
DEVOPS
Ready to work
remotely
asdad
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • asdasd

    Jan 1999 - current time26 years 6 months

Junior QA Engineer

10+

Popular candidate! Connected by 10+ companies

  • Ukraine, Lviv
  • Less than 1 year
  • $2.4k ($200 / month)
  • Upper intermediate
Core technical skills
Qa
manual testing
TypeScript
HTML & CSS
Cypress
AWS
GraphQL
Blockchain
Functional testing
Angular.js
React Native
Usability testing
Android
Hibernate
Sanity testing
Achievements / Key results
asd
Considering roles
QA
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • QA

    Feb 2025 - current time5 months

Java test engineer 28 run

10+

Popular candidate! Connected by 10+ companies

  • United States, New York
  • 5+ years
  • $7.8k ($648 / month)
  • Advanced
Core technical skills
Java
Blockchain
AWS
API testing
React Native
Achievements / Key results
• I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU• I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU• I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU • I have a pet project with more than 60k users • Delivered / took part in ~40 iOS/macOS apps in 7 years • Each time I start on a project I end up leading it • Leading a mobile team of a product with 1M+ DAU
Considering roles
BACKEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • qw

    Feb 1970 - current time55 years 5 months

hjhjh

5+

Popular candidate! Connected by 5+ companies

  • Germany, Hamburg
  • 1-3 years
  • $2.5k ($208 / month)
  • Pre intermediate
Core technical skills
Kubernetes
Blockchain
RxSwift
MySQL
manual testing
Achievements / Key results
asdasdad
Considering roles
FRONTEND
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • asdasd

    Feb 2001 - current time24 years 5 months

sc

5+

Popular candidate! Connected by 5+ companies

  • France, Lille
  • 1-3 years
  • $5k ($417 / month)
  • Elementary
Core technical skills
Java
Blockchain
Functional testing
Angular.js
React Native
Achievements / Key results
fenwlfn
Considering roles
DEVOPS
Ready to work
remotely
Experience details are hidden. To make them visible, send a message to the candidate.

Experience

  • o34hf

    Jan 2000 - current time25 years 6 months

Qa engineer

5+

Popular candidate! Connected by 5+ companies

  • Ukraine, Kyiv
  • 1-3 years
  • $7.2k ($600 / month)
  • Intermediate
Core technical skills
JavaScript
React.js
HTML & CSS
MySQL
TypeScript
Node.js
API testing
manual testing
SASS
Mobile testing
AWS
Solidity
PostgreSQL
Java
Python
Redux
Smoke testing
Web3
Docker
MongoDB
Blockchain
Functional testing
GraphQL
Achievements / Key results
Achievements: Participated in testing a mobile and web app for a job tracking platform. Successfully found and reported critical bugs in production. Integrated TestRail with Jira to improve test coverage.
Ready to work
remotely
kyiv
View 112 more candidates