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Serhii, Solidity & Full-stack Web3 Engineer, Architect, Team-Lead.

Ukraine
Last Updated: 15 Mar 2024

• 15+ years of commercial software development experience • Solid knowledge of Solidity, C++, JavaScript, TypeScript; • Deep understanding of blockchain architecture and smart contract logic; • Cosmos, Tron, Avalanche, Binance Smart Chain, Ethereum dApps; • Strong skills in developing NFT smart contracts. Support and payload verification; • NFT Marketplaces (ERC - 721/1155), Crypto Payment Solutions & DeFi Cross Chain Bridges - ERC-20 Tokens, ICO, DEX, Staking, Swapping; • Highly qualified knowledge of Stripe payment system integration to blockchain data; • 10+ years experience working with Python; • 5 years experience working with Node.js; • Strong abilities with Express; • Experience working with Docker, and Kubernetes (K8s); • 3+ years of development experience with React.js. • No scheduled vacations within the next 3 months;

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Cosmos

Cosmos

Solidity

Solidity

NFT (non-fungible token)

NFT (non-fungible token)

Node.js

Node.js   5 yr.

React

React   3 yr.

View Serhii

Steven, Blockchain Software Engineer

China
Last Updated: 4 Jul 2023

- Fast-paced, high-quality, detail-oriented, and self-motivated developer with more than 10 years of experience in the IT industry; - I use the TDD approach for designing the architecture and implementing scalable and maintainable web apps/services. - I have been working on a bunch of projects and meanwhile, I worked in several positions across frontend developer, backend developer, full-stack developer, and lead engineer; - In-depth skills develop smart contracts on Solidity; - Good skills working with Go; - 3 years experience with Rust; - 2 years experience with Substrate; - Smart contracts in complex DeFi and DEX structure; - Bridge Smart Contract which is for transferring tokens across networks; - Proxy smart contract; - eWallet App and GSM e-commerce product; - Blockchain networks including Cosmos, Ethereum, BSC, Polygon, Avalanche and Solana; - 5+ years experience with Node.js; - Deep skills working with Apollo GraphQL; - Good abilities working with Hardhat framework; - Deploy and work on various kinds of tokens - ERC20, ERC721, ERC721A, ERC1155; - Cross-chain smart contracts using LayerZero; - NFT Dapps such as madlab, Art Basel, Fateful Youth; - NFT market smart contract for auction and offer with lazy minting; - NFT marketplace Dapp using Venly; - Available: ASAP.

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Cosmos

Cosmos

Solidity

Solidity

Go

Go   3 yr.

Node.js

Node.js   5 yr.

View Steven

Sergey B., Full-Stack Engineer

Ukraine
Last Updated: 4 Jul 2023

As an experienced Javascript developer: - 6 years of experience in React Native and React development and these are my main skills; - 2 years of experience in Angular and Vue; - Blockchain developer with 2 years of experience; - Experience with developing React+Web3 frontend projects and also compiling testing and migrating solidity files; - 3 years of experience with ExpressJS, MySQL, and MongoDB. Also, have a year of experience with NestJS development.

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Cosmos

Cosmos

Node.js

Node.js   6 yr.

JavaScript

JavaScript

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Tony Scott, Rust Engineer

Sydney, Australia
Last Updated: 4 Jul 2023

- 5+ years of experience in blockchain development - Advanced English - Available ASAP

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Cosmos

Cosmos

Rust

Rust

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Steven S., Go/Solidity Blockchain Engineer

Hong Kong
Last Updated: 4 Jul 2023

- Fast-paced, high-quality, detail-oriented, and self-motivated developer with more than 10 years of experience in the IT industry. - I use the TDD approach for designing the architecture and implementing scalable and maintainable web apps/services. - I have been working on a bunch of projects and meanwhile, I worked in several positions across frontend developer, backend developer, full-stack developer, and lead engineer. - Bridge Smart Contract which is for transferring tokens across networks. - NFT Dapps such as madlab, Art Basel, Fateful Youth - eWallet App and GSM e-commerce product. - Smart contracts in complex Defi and DEX structure - Blockchain networks including Ethereum, BSC, Polygon, and Solana. - Deploy and work on various kinds of tokens - ERC20, ERC721, ERC721A, ERC1155. - Cross-chain smart contracts using LayerZero - NFT market smart contract for auction and offer with lazy minting - Proxy smart contract - NFT marketplace Dapp using Venly - Available: ASAP

Learn more
Cosmos

Cosmos

Go

Go

Solidity

Solidity

View Steven

Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

Only 3 Steps to Hire Cosmos Engineers

1
Talk to Our Talent Expert
Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
2
Meet Carefully Matched Talents
Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person.
3
Validate Your Choice
Bring new talent on board with a trial period to confirm you hire the right one. There are no termination fees or hidden costs.

Welcome to Upstaff

Yaroslav Kuntsevych
Upstaff.com was launched in 2019, addressing software service companies, startups and ISVs, increasingly varying and evolving needs for qualified software engineers

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CEO
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Henry Akwerigbe
Henry Akwerigbe
This is a super team to work with. Through Upstaff, I have had multiple projects to work on. Work culture has been awesome, teammates have been super nice and collaborative, with a very professional management. There's always a project for you if you're into tech such Front-end, Back-end, Mobile Development, Fullstack, Data Analytics, QA, Machine Learning / AI, Web3, Gaming and lots more. It gets even better because many projects even allow full remote from anywhere! Nice job to the Upstaff Team 🙌🏽.
Vitalii Stalynskyi
Vitalii Stalynskyi
I have been working with Upstaff for over a year on a project related to landscape design and management of contractors in land design projects. During the project, we have done a lot of work on migrating the project to a multitenant architecture and are currently working on new features from the backlog. When we started this project, the hiring processes were organized well. Everything went smoothly, and we were able to start working quickly. Payments always come on time, and there is always support from managers. All issues are resolved quickly. Overall, I am very happy with my experience working with Upstaff, and I recommend them to anyone looking for a new project. They are a reliable company that provides great projects and conditions. I highly recommend them to anyone looking for a partner for their next project.
Владислав «Sheepbar» Баранов
Владислав «Sheepbar» Баранов
We've been with Upstaff for over 2 years, finding great long-term PHP and Android projects for our available developers. The support is constant, and payments are always on time. Upstaff's efficient processes have made our experience satisfying and their reliable assistance has been invaluable.
Roman Masniuk
Roman Masniuk
I worked with Upstaff engineers for over 2 years, and my experience with them was great. We deployed several individual contributors to clients' implementations and put up two teams of upstaff engineers. Managers' understanding of tech and engineering is head and shoulders above other agencies. They have a solid selection of engineers, each time presented strong candidates. They were able to address our needs and resolve things very fast. Managers and devs were responsive and proactive. Great experience!
Yanina Antipova
Yanina Antipova
Хочу виразити велику подяку за таку швидку роботу по підбору двох розробників. Та ще й у такий короткий термін-2 дні. Це мене здивувало, адже ми шукали вже цілий місяць. І знайдені кандидати нам не підходили Це щось неймовірне. Доречі, ці кандидати працюють у нас і зараз. Та надать приклад іншим працівникам. Гарного дня!)
Наталья Кравцова
Наталья Кравцова
I discovered an exciting and well-paying project on Upstaff, and I couldn't be happier with my experience. Upstaff's platform is a gem for freelancers like me. It not only connects you with intriguing projects but also ensures fair compensation and a seamless work environment. If you're a programmer seeking quality opportunities, I highly recommend Upstaff.
Volodymyr
Volodymyr
Leaving a review to express how delighted I am to have found such a great side gig here. The project is intriguing, and I'm really enjoying the team dynamics. I'm also quite satisfied with the compensation aspect. It's crucial to feel valued for the work you put in. Overall, I'm grateful for the opportunity to contribute to this project and share my expertise. I'm thrilled to give a shoutout and recommendation to anyone seeking an engaging and rewarding work opportunity.

Hire Cosmos Developer as Effortless as Calling a Taxi

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FAQs about Cosmos Development

How do I hire a Cosmos developer? Arrow

Are you desperately looking for a Cosmos developer validated to your requirements and skills? Are you lacking in resources and tools to find the right developer? If yes, then you are at the right place! Because at Upstaff, the selection of the Cosmos Developer is done professionally as per your requirement, in a short time of just a few days, from calling to the instant task of your validated developer, with all your required skills.

Where is the best place to find Cosmos developers? Arrow

Sure enough, within the network there must be dozens, if not hundreds, of services and platforms where you can look for the Cosmos guy you need, but just Upstaff lets you sort out the best of the best real qualified developers practically in a couple of minutes, so that you will be able to select the one whose personality will be a perfect fit to your company. This is the case when you can create a genuinely “Pizza” type of service in the field of custom software development.

How are Upstaff Cosmos developers different? Arrow

Vetting by expert human reviewers is combined with historically curated feedback from clients and team-mates, which has enabled us to save, on average, more than 50 hours for each client team evaluating Cosmos candidates for every position. We live and breathe technical excellence, borne out of extensive industry expertise.

How quickly can I hire Cosmos developers through Upstaff? Arrow

Our process begins with a 30-minute discovery call: we’ll discuss your pain points, technical requirements, and team diversity. Meet Carefully Matched Cosmos Talents. Upon your meeting confirmation, we’ll send you profiles and arrange an introduction call with the right talents for your project, within 1-3 days. Schedule a call to meet Cosmos engineers in person. Make the right call. Bring a new Cosmos developer on board with a trial period: confirm that the person you hired does the job right, no termination fees and no hidden fees.

How does Upstaff vet remote Cosmos engineers? Arrow

After this introductory round, Upstaff Managers do an eval of the soft skills of the candidates before the hiring decision is approved or rejected. For the hard skills, the Upstaff Staffing Platform has a short testing session to check their Cosmos skills or engage a senior developer to do a technical interview for more senior developers. You can reuse some of the hard and soft skills of past candidates to connect them with other jobs in the future (see below). Upstaff managers also do an eval of the talent before approving them for further work, allowing us to accelerate the work and ability to scale, but also providing information to clients on the talent pipeline. Finally, we also have a matching engine within the work mining system that matches candidates and jobs in real time.

How to hire Cosmos developer? Arrow

If recruiting services and job boards are not your 1st option, you may want to consider a client-oriented service like Upstaff to find & hire Cosmos developers. Upstaff has a network of vetted and tested Cosmos developers. Here, you can hire web developers for a few simple coding tasks with Cosmos.

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Table of Contents

How and where is Cosmos used?

  • Decentralized Finance: Tokenization of real-world assets
  • Supply Chain Management: Traceability of products
  • Data Management: Immutable data storage
  • Healthcare: Securing patient records
  • Gaming Industry: In-game asset ownership
  • Identity Management: Secure digital identities
  • Internet of Things: Efficient data sharing
  • Legal Contracts: Smart contract execution
  • Voting Systems: Transparent and secure voting
  • Education: Verifying academic credentials

Compare Junior, Middle, Senior, and Expert/Team Lead Cosmos Developer roles

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior1-2 years
  • Assist in basic coding tasks
  • Perform code reviews
  • Participate in team meetings
$60,000
Middle3-5 years
  • Develop new features
  • Optimize code performance
  • Support Junior developers
$80,000
Senior6-8 years
  • Lead project development
  • Architect solutions
  • Mentor Middle developers
$100,000
Expert/Team Lead10+ years
  • Define technical strategy
  • Resolve complex issues
  • Manage cross-functional teams
$120,000

Quick Facts about Cosmos.

  • Cosmos Software Development emerged in 1996 with a focus on
  • Creating dazzling websites and innovative mobile apps.
  • To dive into Cosmos Software Development, one needs a solid grasp of
  • JavaScript and proficiency in HTML/CSS.
  • When it comes to related technologies, Cosmos Software Development often pairs up with
  • Artificial Intelligence for next-level creations.
  • In a parallel universe, Cosmos Software Development is rumored to power
  • The software that runs on Mars rovers. Now that’s out of this world!

TOP Cosmos Related Technologies

  1. .NET Core (Microsoft)
  2. Author: Bill, 2020

  3. Node.js (Ryan Dahl)
  4. Author: Ryan, 2009

  5. React (Facebook)
  6. Author: Jordan, 2013

  7. Angular (Google)
  8. Author: Misko, 2010

  9. Python (Guido van Rossum)
  10. Author: Guido, 1991

What are top Cosmos instruments and tools?

  • Wide Field Camera 3: A powerful camera by Ball Aerospace & Technologies Corp, released in 2009
  • Cosmic Origins Spectrograph: A tool by the University of Colorado Boulder, released in 2009
  • Advanced Camera for Surveys: A camera by Johns Hopkins University, released in 2002
  • High-Resolution Channel: A tool by NASA, released in 1990
  • NICMOS: Near Infrared Camera and Multi-Object Spectrometer by NASA, released in 1997
  • Space Telescope Imaging Spectrograph: A tool by Ball Aerospace & Technologies Corp, released in 1997

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Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager