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Senior Java developer 10 yrs+ blockchain wallet refactor

$25-50 USD / hour

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Disiarkan 3 bulan yang lalu

$25-50 USD / hour

I am looking for a senior Java developer from Eastern Europe with at least 10 years of experience to help me with a major refactor of our existing blockchain wallet system. This project is for an existing business and the goal is to change the signature algorithm in a multiparty computation. Scope of the refactoring: - Major refactor to improve functionality Timeline expectations: - 6 weeks est Ideal skills and experience: - Java Spring, Security, Cryptography - At least 10 years of experience as a Java developer - Strong understanding of blockchain technology and wallet systems - Experience with refactoring and improving the functionality of existing systems - Knowledge of security protocols and best practices in blockchain development - Ability to work independently and meet project deadlines
ID Projek: 37526069

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Aktif 2 bulan yang lalu

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36 pekerja bebas membida secara purata $36 USD/jam untuk pekerjaan ini
Avatar Pengguna
Hi Good evening , I have read the brief details on your job listing . I see you have been looking for someone experienced with Blockchain, Java, Cryptography, Spring Security and Java Spring. Its been 8 years since I have been working on freelancer.com, I have 9 years of experience doing similar jobs. I would request you to check my profile and review projects, feedbacks of projects related to those skills. Questions: 1. These are all the requirements of your job or do you have more? If yes, Please provide detailed requirements in chat and let me review and get back with queries. 2. Do you currently have anything done or this job has to be done from scratch? 3. What is the timeline to get this job done? 4. Are you open to use 3rd party APIS for it even if they are paid? Why Choose Me? 1. I have done more than 250 major projects only on freelancer.com. 2. I have not received a single bad feedback since last 5-6 years. 3. You will find 5 star feedback on last 100+ major projects which shows my clients are happy with my work. Portfolio: https://www.freelancer.com/u/AwaisChaudhry Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) Please initiate the chat so we could discuss it in detail and we will continue from there. Thanks! Awais
$25 USD dalam 38 hari
4.9 (59 ulasan)
8.0
8.0
Avatar Pengguna
Hi there! I'm Marko and I'm excited to learn more about your project and help bring your vision for a refactor of your existing blockchain wallet system to life. With 8+ years of web and blockchain development experience, I am confident that I can provide the best solution for your needs. My experience includes working with Java Spring, Security, Cryptography and other related technologies such as blockchain. Additionally, I have extensive knowledge in refactoring and improving the functionality of existing systems. This makes me an ideal candidate for this project as I am able to take on the major task of refactoring the signature algorithm in a multiparty computation. I am confident that my skillset including web programming (CodeIgniter/Laravel), PHP/HTML/CSS/JavaScript (Angular/React/Node), Database (MySQL/SQLite/Oracle/MongoDB) as well as blockchain programming make me the perfect fit for this project. Additionally, I offer a wide range of services such as web app wizard, clean maintainable code, guarantee results & long term relationship along with reasonable price. If you give me the chance to complete this project please let me know
$30 USD dalam 40 hari
5.0 (2 ulasan)
6.1
6.1
Avatar Pengguna
Hi there Philip H., Good evening , Hope you're having a great time. I'm bidding on your project "Senior Java developer 10 yrs+ blockchain wallet refactor" I am expert in Spring Security, Java Spring, Java, Cryptography and Blockchain. please leave a message on my chat so we can discuss the budget and deadline of the project. I have read your project description and i'm confident i can do this project for you perfectly. Thanks ..
$50 USD dalam 410 hari
5.0 (8 ulasan)
5.7
5.7
Avatar Pengguna
I am an accomplished Java Developer with over 12 years of experience, specializing in blockchain technology and cryptography. My background aligns well with the requirements of your project. I propose to leverage my expertise in Java Spring and security to execute a comprehensive refactor of your blockchain wallet system. My approach will focus on enhancing functionality and optimizing the signature algorithm for your business needs. I am adept at working independently and adept at delivering projects within tight deadlines. I am confident that my skills and disciplined work ethic will result in a superior update to your system.
$25 USD dalam 40 hari
5.0 (6 ulasan)
5.2
5.2
Avatar Pengguna
Dear Philip H.,   We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time.   We are 25 years in this business and our technical specialists have strong experience in Java, Cryptography, Blockchain, Java Spring, Spring Security and other technologies relevant to your project.   Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews.   Please contact us via Freelancer Chat to discuss your project in details or let's appoint time for Zoom meeting to meet and discuss your project in details.    Best regards, Sales department Tangram Canada Inc.   
$35 USD dalam 5 hari
5.0 (3 ulasan)
5.3
5.3
Avatar Pengguna
Hi there, I'm excited to express my interest in your Senior Java developer 10 yrs+ blockchain wallet refactor project. With 4-5 years of experience in Blockchain, Java Spring, Spring Security, Java and Cryptography, I'm well-prepared to add significant value to your initiative. Please note that the initial bid is provisional. A final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please provide any available detailed documentation? I'm also open to further discussions to delve deeper into specific aspects of the project. Feel free to review my profile, which showcases my portfolio, past jobs, and client reviews, reflecting the quality and professionalism I bring to every project. I always aim to offer a competitive budget without compromising on quality. Thank you for considering my proposal. I'm eager to collaborate and contribute to your project's success. Let me know if you need any additional information. Best regards, Rashid Amjad.
$35 USD dalam 24 hari
4.7 (2 ulasan)
4.5
4.5
Avatar Pengguna
Hi, there! I understand you are looking for a senior Java developer from Eastern Europe with at least 10 years of experience to help you with a major refactor of your existing blockchain wallet system. I am confident that my experience and skillset make me the perfect fit for this project. I have the knowledge and expertise necessary to deliver successful results in terms of improving functionality and meeting timeline expectations. I am well-versed in Java Spring, Security, Cryptography which make me an ideal candidate for this job. My past career has involved developing enterprise level applications so I have the necessary expertise to tackle this complex project. Additionally, I am able to work independently to meet deadlines as well as apply proper security protocols and best practices in blockchain development. If you would like me to discuss further please don't hesitate to reach out! Best regards.
$38 USD dalam 40 hari
5.0 (2 ulasan)
3.7
3.7
Avatar Pengguna
Hello, I ami terested in the project. I don't have 10 years+ experience. But I have a good knowledge on cryptography and Java development. I have followed cryptography as a module during my university times. I believe I can work with you on this project. Let me know Regards Bhagya
$38 USD dalam 40 hari
4.8 (1 ulasan)
2.5
2.5
Avatar Pengguna
Dear Philip H., I prefer South Africa clients. This project seems a piece of cake for me. I finished exactly the same work a month ago. I have deep experience on Java, Cryptography, Blockchain, Java Spring, Spring Security Please come over chat and discuss your requirement in a detailed way. Regards
$29 USD dalam 7 hari
5.0 (1 ulasan)
2.0
2.0
Avatar Pengguna
I am 6+ years experienced in Java Web Development. I have strong knowledge of Spring boot MVC and rest API. I am also experienced and thymeleaf server side programing as well as React client side front-end programing. I will provide you quality work within timeline with full satisfaction.
$30 USD dalam 40 hari
5.0 (1 ulasan)
1.9
1.9
Avatar Pengguna
Hey Philip, I am Milos, a Java developer from Serbia with over 10 years of experience in Java, Cryptography, Blockchain, Java Spring, and Spring Security. I have carefully read the requirements for the project and I am confident that I can provide a proper solution. For the major refactor of your existing blockchain wallet system, I propose the following approach: 1. Analyze the current codebase and identify areas for improvement. 2. Implement a new signature algorithm using multiparty computation. 3. Test and validate the changes to ensure functionality and security. 4. Optimize the system for improved performance and scalability. 5. Provide documentation and support for seamless integration. I understand the importance of client satisfaction, which is why I only request payment once you are fully satisfied with the work. I would be happy to discuss the project further and answer any questions you may have. Please initiate the chat so we can get started. Sincerely, Milos
$48 USD dalam 7 hari
2.0 (2 ulasan)
3.6
3.6
Avatar Pengguna
Greetings Dear Client, Welcome to my profile, Home to Professional and Quality services with 100% customer satisfaction guarantee. I'm a Certified & Experienced Expert in the respective project requirements. Dear Client, I take this opportunity to inform you that i have KEENLY gone through all your project requirements as given in your project description and I confirm to you that i can perfectly deliver as instructed. Being in possession of all CLEARLY STATED required project skills (Spring Security, Java, Blockchain, Cryptography and Java Spring) as this is my area of professional specialisation having completed all Certifications and developed adequate experience in the same area, I hereby humbly request you to consider my bid for Professional, Quality and Affordable services always. STRICT TIMELY DELIVERY & UNLIMITED REVISIONS. Kindly Message Me We Discuss More About The Project and seal the contract. Welcome and Thank-you.
$30 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Hi Philip H., I’ve checked your requirements and really interested in this job. I can complete your project on time and your will experience great satisfaction with me. I have rich experienced in Cryptography, Blockchain, Spring Security, Java Spring and Java. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details. Thank you. Dima.
$25 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Philip H.! Nice to meet you I am extremely interested your project Senior Java developer 10 yrs+ blockchain wallet refactor and It seems great! I am an expert who has many years of experience on Java, Cryptography, Blockchain, Java Spring, Spring Security so I am sure that I am a god fit for your project. And as an expert, I have enough energies and powers to do your projects. Please come over chat and discuss your requirement in a detailed way. Thank You
$41 USD dalam 7 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Dear Client, Hope you are doing well. Happy to apply on the project about Senior Java developer 10 yrs+ blockchain wallet refactor. I have read your job description carefully and understood what you want. I'm Aleksandrs from Latvia with 14 years of experience in the industry, especially I have great expertise in Java Spring, Cryptography, Blockchain, Java and Spring Security. Since I have done similar work, I feel very confident that I can deliver perfect result in a short time. Please feel free to contact me, I can start right away! Cheers, Aleksandr
$30 USD dalam 25 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Hello, I am excited about the opportunity to work on your blockchain wallet system. With over 10 years of experience as a senior Java developer, I have a deep understanding of Java Spring, Security, and Cryptography. My expertise in blockchain technology and wallet systems makes me well-equipped to handle the major refactor of your existing system, particularly in changing the signature algorithm in a multiparty computation. I have a strong track record of enhancing the functionality of existing systems, ensuring adherence to security protocols and best practices in blockchain development. Let's connect to further discuss how I can contribute to the success of this project.
$50 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
I understand that you are looking for a senior Java developer from Eastern Europe with at least 10 years of experience to help you with a major refactor of your existing blockchain wallet system. This project is for an existing business, and the goal is to change the signature algorithm in a multiparty computation. My skillset includes extensive experience in Java Spring, Security, Cryptography as well as 10 years of experience as a Java developer. Additionally, I have the knowledge and understanding required to undertake this major refactoring project - from my expertise in Java development to security protocols and best practices in blockchain development. My ability to work independently and meet project deadlines is another key asset that makes me stand out from other candidates. If you choose me for this job, you can count on me to deliver a quality result within the timeframe expectations while maintaining high standards for security, performance and user experience. Please feel free to reach out if you have any further questions or would like more information about me or my skillset.
$38 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Hello there! My name is Koutarou and I am a well-qualified Full Stack Developer with over 5 years of experience. I have the necessary skills and experience to help you with your project. Specifically, I have extensive knowledge in Java Spring, Security, Cryptography which will be greatly beneficial for your project. Additionally, I have 10 years of experience as a Java developer which will be instrumental in improving the functionality of your existing blockchain wallet system. I understand that you are seeking a senior Java developer from Eastern Europe with at least 10 years of experience to help you with a major refactoring of your existing blockchain wallet system. This project is for an existing business and the goal is to change the signature algorithm in a multiparty computation. Therefore I believe that my skillset and experience make me the best fit for this job. Please feel free to reach out if you have any questions or would like more information about my services. Thank you!
$38 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Greetings! I am Alina and I am a highly motivated and creative Full Stack Developer with a keen eye for design. I have over 10 years of experience as a Java developer and I have the skills necessary to help you with your project. Specifically, I specialize in Java Spring, Security, Cryptography and I have a strong understanding of blockchain technology and wallet systems. I am confident that my skillset makes me the perfect fit for this project. My expertise in front-end development includes knowledge of HTML5, CSS3 and JavaScript (ES6+). My back-end development includes server-side scripting languages such as Node.js and Python (Django) along with database design and management using MongoDB, MySQL and PostgreSQL. I also have strong experience in devOps & version control through use of Git along with Docker deployments&continuous integration. This combination of skills makes me an excellent choice for this job as it requires major refactoring of an existing system to improve its functionality as well as meet project deadlines. Sincerely, Alina
$30 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0
Avatar Pengguna
Hi there! My name is Jose Emilio and I am a Java developer with 10 years of experience. I understand you are looking for a senior Java developer from Eastern Europe with at least 10 years of experience to help you with a major refactor of your existing blockchain wallet system. This project is for an existing business and the goal is to change the signature algorithm in a multiparty computation. I believe that I am the perfect person for this job due to my extensive knowledge in Java, security protocols, cryptography and refactoring. As part of the project timeline expect me to work on 6 weeks' worth of project within the allocated timeframe. My ideal skills include Java, Spring, Security and at least 10 years of experience as a Java developer.
$38 USD dalam 40 hari
0.0 (0 ulasan)
0.0
0.0

Tentang klien

Bendera SOUTH AFRICA
Johannesburg, South Africa
0.0
0
Kaedah pembayaran disahkan
Ahli sejak Okt 24, 2018

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