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Yuval D.

Freelance Blockchain & Full-Stack Developer

Works remotely from Vienna

  • 48.2083
  • 16.3725
  • Suggested rate €920 / day
  • Experience 2-7 years
Propose a project The project will begin once you accept Yuval's quote.
Propose a project The project will begin once you accept Yuval's quote.

Location and workplace preferences

Location
Vienna, Austria
Remote only
Primarily works remotely

Verifications

Freelancer code of conduct signed
Read the Malt code of conduct

Verified email

Languages

  • French

    Basic

  • English

    Native or bilingual

  • Hebrew

    Native or bilingual

  • German

    Basic

Categories

Skills (50)

Yuval in a few words


I build top-quality Back-End, Front-End and Full-Stack projects of all sizes. Depending on your needs, I can offer services either as an independent developer, or team-up with one of the internationally renown designers I work with to both professionally design and develop your project. I work with companies and individuals of all levels of understanding of technology, from complete unfamiliarity to absolute mastery. I mostly use the MERN Stack + TypeScript and Redux to build and deploy web scrapers, back-ends, and web/desktop applications. I also use some more highly specialized technologies when needed, like WebRTC and Socket.io.

Experience

Freelance

Digital & IT

Freelance Solidity Developer  - As a freelancer

September 2021 - Today (10 months)

• Writing secure and efficient Smart Contracts using Solidity and Web3.
• Providing end-to-end solutions for DApps, ERC-20s, ERC-777s, ERC-1155s, and more, including not only Smart Contract development, but also accompanying Full-Stack applications and integrating the two together.
• Writing scalable and reusable Smart Contract unit tests using Mocha + Chai to ensure no bugs are missed. Bugs cause way more damage with Smart Contracts than with normal Full-Stack apps.
• Using my previous experience in Cyber Security, putting a special emphasis on security where Smart Contracts are involved. In the Blockchain world, more than anywhere else, a company's reputation can very easily be destroyed by a security breach.
• Putting a special emphasis on efficiency to ensure any Smart Contract function used costs only the bare minimum required from the users.
Solidity Web3 Truffle Hardhat ERC-20 ERC-777 ERC-721 ERC-1155 React Next.js Node.js

Freelance

Digital & IT

Freelance Full-Stack & Back-End Web Developer, Lead Developer & Project Manager  - As a freelancer

July 2019 - Today (3 years3 years)

• Building, managing, and leading native web, mobile & desktop applications for clients using mainly Node.js, MongoDB, TypeScript, React.js (MERN Stack) and Redux, with the addition of Electron.js for desktop applications.
• Building & managing, when needed, with specialized technologies, such as WebRTC, Socket.IO and more.
• Building & leading teams of all sizes. Recruiting top talent for fair rates completely independently, with as minimal use of the client's resources as possible.
• Using my background in Cyber-Security & Research to ensure projects are secure, optimized and using the best technologies for their use-case.
• Using my experience in managing large clients to ensure constant, optimal communication with the client at all times, as well as ensuring they're fully aware of all the important parts in their project's development.
React.js Electron MongoDB Node.js SQL Express.js Socket.io Redux Typescript WebRTC Next.js Web3

Wikistrat

Digital & IT

Lead Developer & Project Manager  - As a freelancer

January 2020 - October 2021 (1 year1 year and 9 months)

Led a full-stack team working on a huge, product-changing set of features and platforms for Wikistrat - one of the world's largest tech companies, serving Fortune 500 companies, the world's biggest non-profits, government agencies, U.S presidential campaigns, and more.

Wikistrat serves extremely wealthy and high-profile clients. As such, perfection in my code and conduct is absolutely mandatory.

• Capacity was as a lead developer/tech lead and managing a team of Full-Stack engineers.
• Strategizing & advising on technical features, their code, and how they should be implemented.
• Co-ordinating many teams, both on the technical and business side, to take all factors and all use cases into account in new versions, ensuring no work is wasted due to misunderstandings.
• Reviewing code to ensure proper implementation of strategies.
• Massive project spanning several repositories and teams, building features and platforms that are a complete game-changer for Wikistrat.
• Additional responsibilities as a Lead Developer, writing and debugging highly sensitive and advanced code in React, Electron.js, Redux, TypeScript, Node.js, MongoDB, Socket.io and more.
• Managing an R&D team consisting of developers using the same aforementioned stack. Responsible for the team's performance, deadlines, and quality of work.
• Setting up project management systems to ensure efficient and fast development.
• Communicating with all stakeholders daily in a highly efficient and standardized manner, ensuring they always have a crystal clear image of exactly where the project is at.

stormforce.dev

Digital & IT

Founder & CEO

April 2021 - Today (1 year1 year and 3 months)

Connecting start-ups with senior freelance MERN developers for up to 33% better rates than our competitors.

Working with freelancers & software developers can be the worst or best experience for your company, and can heavily affect you and your company’s valuable time and resources.

Storm Force's goal is to provide you with the best experience and results on your journey, and senior developers and top of the line code quality - arranged within days.

Sounds interesting? Just wanna ask a few questions? Get in touch today!

Red Button

Digital & IT

DDoS Expert & Information Security Specialist

Tel Aviv, Israel

March 2019 - June 2019 (3 months)

• Was part of a DDoS & Information Security management team of some of the biggest companies in their fields.
• Role was being either or both a CISO (Chief Information Security Officer) and a DDoS Expert, depending on the client.
• Learned every client's network and information security architecture, as well as their team structures, in-depth and familiarized myself with security breaches they've experienced in the past.
• Responsible for remaining constantly aware of relevant threats/vulnerabilitie, adjusting clients' defenses accordingly, and co-ordinating all relevant teams to do so.
• Helped educate clients' security teams so that they're better able to maintain their security architecture independently.
• Among the clients I was responsible for were one of the biggest secure payment processors in the world, one of the biggest digital advertising implementation companies in the world and one of the biggest gaming companies in the world.

Israeli National Cyber Directorate

Defense & Military

Technological Cyber Threats Analyst

Herzeliya, Israel

March 2018 - March 2019 (1 year1 year)

• Led and participated in in-depth technological researches in the Cyber and Information Security field.
• Researches I led and/or participated in were published in executive circles both internally and in several other government agencies, with one reaching as far as the Prime Minister of Israel.
• Led and participated in co-operative researches with other government agencies and civilian intelligence agencies.
• Led the creation and definition of a large internal intelligence platform.
• Participated in Presale stages of external technological platforms, defined my team's requirements of the platforms and co-ordinated with the platforms' representatives for training and feature requests.

Freelance

Digital & IT

Freelance Java/C# Software Engineer  - As a freelancer

January 2014 - January 2016 (2 years2 years)

Wrote code in Java and C# for a variety of clients on a part-time basis.

Education