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Development of a Digital Signature App

$1500-3000 USD

Closed
Posted over 4 years ago

$1500-3000 USD

Paid on delivery
We need a development of a digital signature app that can sign pdf asking a user for their certificate (token usb, smartcard, etc), this app must follow standard recomemdations to make a valid digital signature. This app need to be integrated with another generic applications thru some kind of api. We need the source code of this application and are preferable if this software is written in C#.
Project ID: 21819850

About the project

45 proposals
Remote project
Active 4 yrs ago

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45 freelancers are bidding on average $2,422 USD for this job
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Hello, We are IT-Engineers and Business Analysts, creating complete web and mobile solutions, for already more than 15 years, supporting our products with custom digital marketing strategies and instruments. Complex Applications are especially preferred by our engineers, as we've created a lot of them already, so it seems to be a good match. Before the collaboration starts - the initial briefing round takes place, which is free of charge. We are interested in all the details of your specific case. They will allow us to obtain a better vision of your concept and help us create unique solutions for you. Let's schedule a convenient time for the first kick-off conversation. Best Regards, Andrei Costenco Team Lead, Business Analyst, Senior Engineer Dev Experts Team
$3,000 USD in 30 days
5.0 (126 reviews)
8.8
8.8
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Hi,. I have gone through the brief details mentioned on the job. I have done multiple jobs with .NET, C# Programming, Software Architecture which are the skills required to get this job done. Lets start the chat so we can discuss this job more in detail then we will discuss the final budget, Right now I am placing default bid. We will discuss the final budget after detailed discussion and going through detailed requirements. Thanks.
$3,000 USD in 9 days
4.7 (76 reviews)
8.0
8.0
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I CAN COMPLETE YOUR PROJECT EASILY Hello, I am software developer with enough experiences on C# for 13 years. I can work by full time for your project and trying to satisfy the requirements. I am designing the project from scratch and structure it well. I am following the project's design process exactly, and if any error is found, fix it within 24 hours and provide maintenance free of charge for a month. Client's idea + Programmer's good coding is the perfect result, this is my idea. I want to keep long-term relationship for customer so I want to give the nice result. C#/.Net is very powerful programming language and I am majoring on it for long years. If you want the perfect result, please contact with me.
$2,000 USD in 7 days
5.0 (27 reviews)
6.9
6.9
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Hi I have been specializing in mobile and web(website, backend) for 7+ years. I have rich experiences in - VoIP mobile/web app using webRTC, 3rd party, streaming server - On demand system such as UBER style booking , Delivery - Sharing , dating - Live streaming - Voice&Video&Text Chatting - Video&Audio players , editors - E-commerce - Fitness App - Guard patrol and School management system based on Nfc Read/Write- Live streaming - GPS tracking, GEO fencing on GoogleMap - Payment integration(PayPal , Stripe , Braintree , Peach , PayTabs etc) - QR generating and scanning - Responsive mobile site - Bluetooth&Wifi app … I`d like to work for your project. I`m looking forward to hearing from you soon. Thanks.
$2,250 USD in 7 days
5.0 (8 reviews)
6.6
6.6
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Mobile App Experts! Hello, we are a leading mobile app development company. we specialize in Android, iOS native app development. We have studied your project and we think we can surely do it. you can rely on us as you can see our profile have best reviews and our project completion rate is 100%. you can view our portfolio by searching over google "concetto labs" Please reply us with your message so that we can discuss more. Thank you, Patrick
$3,000 USD in 30 days
5.0 (24 reviews)
6.3
6.3
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Hello, I am good c# developer. I have much experiences with software development. So, I can do your project perfect. Please contact me and discuss more. Thank you.
$3,000 USD in 30 days
5.0 (6 reviews)
6.0
6.0
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How are you? I am expert in mobile/web field. Especially,I have strong skills in java in android studio, swift, objective-c in xcode. Also have good skills in Xamarin, C#. For digital signature, i have excellent skills in cryptography, encoding/decoding, XML manipulation, etc. I can provide you good communication, good result, fast delivery. Waiting for your reply. Thanks
$2,250 USD in 7 days
4.9 (12 reviews)
6.1
6.1
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Hi there - My name is Phong. I’ve read your brief and I am very interested in this project because I have good knowledge and rich practical experience in these fields. I am highly qualified for this project and would love to speak with you further about taking this project on. If you'd like to view my previous work, take a look at my Freelancer Portfolio. Regards.
$2,250 USD in 7 days
4.9 (23 reviews)
5.9
5.9
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Dear sir. Your project attracted my attention at first glance, because I've extensive experience in Digital Signature APP Programming. I'm really confident about your project, and very eager to join your project. If we have a chance to cooperate, I'll do my best to provide wonderful result. Looking forward to your response. Best Regards.
$2,250 USD in 7 days
4.9 (23 reviews)
5.4
5.4
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Glad to meet you. I have checked your project description and requirements carefully. I am a senior software app developer has 8+ years of good experience. I will never make you disappointed. If you give me a chance to work with you, I will provide you with high-quality work only for you daily. I am always ready for you to discuss your project. Please contact me and let's work together.
$2,250 USD in 7 days
4.9 (23 reviews)
5.1
5.1
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Hi there, We've reviewed the details of your application and we can build the app for pdf digital signs. Didn't get what you mean by user certificates. Is that something they'll get after payment through website? Let us know when we can discuss further on it. Thank you!
$2,500 USD in 15 days
4.8 (10 reviews)
5.4
5.4
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Hello, I am Tuan! I have many years experience in digital signature. I am working in CA company! I have created many apps, web, server, service about digital signature. I have experience working with USB token, smart card, hsm. I can create app with all your requirements! I can create quickly because I have anything what you need. Contact me if you interested! Thanks!
$1,500 USD in 5 days
4.8 (3 reviews)
5.1
5.1
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Hi Sir, Its Hisham. I am Software Engg. with more than 3 years of market experience. I have developed many web and cloud based solutions for my clients. I have been developing solutions ASP .NET since start of my career. I have expertise .NET Core also. I have developed my own libraries in .NET for work simplicity. I am also an expert in Databases and Azure,Google and AWS Cloud. I have developed many ML and BI Solutions. I have worked on Spark(Map Reduce 2.0), Hadoop, Kafka (Structured and Streaming APIs), ETLs and another latest but rare usable technique (TELs) adding to that I have worked on SSIS, SSAS, Tableau, Power BI and data warehouses. I have worked for bigger companies in the market which includes Walmart, Airbnb, Expedia, Booking.com. I have gone through you requirements and willing to offer you my services for you ecommerce development. I will assist you and provide you support after the completion of project. Lets have a discussion Kind Regards
$2,250 USD in 7 days
5.0 (5 reviews)
4.0
4.0
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Hi,sir, I'm sure that I can be a excellent candidate for your project. Please contact me, so that we can discuss more over chat. I value my credits from clients. Thank you for your reading. I have worked for a long time on many projects similar to your project - Development of a Digital Signature App I am very familiar with skills such as .NET, Software Architecture, C# Programming and so on.
$2,500 USD in 13 days
5.0 (4 reviews)
3.9
3.9
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To meet me in here, like that you meet Oasis in the desert . NEW SOFTWARE WORLD WILL BECOME HERE FOR YOU AND ME! Hi, dear! I am high quality SOFTWARE developer and designer. I have full experience over 7 years in software development area. So I am always ready for you with my high quality. Let's start our good business from now~! I am waiting for your good response in here. Thanks a lot!
$2,250 USD in 7 days
4.4 (3 reviews)
4.2
4.2
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Hello, We are extremely experienced in Android & iOS App development because we have been developing Android and iOS apps since 5+ years. We will make your app with a world-class quality as we have developed so many Successful Apps for Android / iOS using Java, objective c, swift over the past 5+ years. We will be glad to you talked about boosting conversations. It would be an honor because we like to build businesses and helping people to build theirs. We believe in a long-term relationship with client gratification. - Our advantages: * World-class quality of work and experience * Native-level English * 24/7 available * PST/EST working hour - Pre-launch support: * Graphic(UI/UX) design * Backend API development * Frontend development * Admin Panel or CMS * Testing and Quality Assurance * App Store Submission and Approval - Post-launch support: * Maintenance/Bug Fixing * Further Extensions Your Success is our Success! We are always looking for a long-term relationship based on trust and professionalism. Thank you and Warm Regards Codemeg soft Solutions
$1,500 USD in 15 days
5.0 (2 reviews)
2.7
2.7
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Hi There! I have more than 8-year experience in this field. Would you please share more details about the project? I am really interested to work with you for long. Best Regards,
$2,250 USD in 30 days
4.9 (2 reviews)
1.7
1.7
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Hi. I'm experienced C# developer. I couldn't read attached .pdf because of foreign language. Could you text me in English, I would like to do this project. You can write me anytime. Best regards, Albert
$2,500 USD in 7 days
4.6 (1 review)
1.0
1.0
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Hi, I am having 7 years of experience in c#. And great experience with pdf files handling. I know many tirdy party assembly which handling the pdf files. Examples pdfium, Syncfusion pdf, i text sharper etc. So I can assure that I can complete this with out fail. Please ping me in chat
$1,500 USD in 30 days
0.0 (1 review)
0.0
0.0
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Hello Sir, First of all, thanks for described all the points of this Project. We are working from the last 16 years in I.T and we have 45+ developer Team. I have read your requirement and understood that you are looking for an experienced Developer to develop a Digital Signature App. I have checked to attach 102 pages PDF File and understood features and functionality of this project which you have mentioned and we will happy to develop this project for you with integrate all the features as per your need with a best attractive look. I'm pleased to inform you that we are working from the last 16 years and we have 8+ years experienced developer team in .NET, C# Programming, Software Architecture. You will get the best price with the best quality of work and service from us than others because we like to keep a long-term relationship with our clients. Can you please share your best time for the chat so we can discuss further and move ahead. Awaiting your reply to move further. Best Regards, Bharat Ghul
$10,000 USD in 90 days
0.0 (0 reviews)
0.0
0.0

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Flag of PERU
Lima, Peru
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Member since Nov 11, 2018

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