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Top freelance Payment systems developers available to hire
Freelance Payment systems Developer5.0 (97 reviews)
Software Engineer with 9.5+ years of experience in web development, backend development, and server architecture. Expertise in building and maintaining various web/backend solutions, from automobile websites to job portals to freelance platforms with live chat integration . Proficient in server architecture setup, deployment, and optimization.
I will give a **full refund** if I am not able to help.
Freelance Payment systems Developer5.0 (7 reviews)
I have always loved being a mentor. In fact, that's why I have been teaching at the university for several years, a passion that dates back to my own university days when I used to assist my classmates.
My professional journey started as a programmer, traversing through various technologies such as PHP, C, C#, Ruby, Java, Javascript, Typescript, Node.js, MySQL, PostgreSQL, Microsoft SQL, Redis, ElasticSearch, Laravel, Nest.js, Ruby On Rails, Lithium, .NET MVC, Vue.js, JQuery, Knockout.js, HTML, CSS, Bootstrap, Software Architectures, JavaFX, Swing, Doctrine, ActiveRecord, Eloquent, Hibernate, TDD, CI, PHPUnit, JUnit, Docker, Git, GitHub, Bitbucket, Jenkins, Queues, Android, Web Security, Payment Processing (Stripe, PayPal), Withdrawal Processing (Transpay, PayPal), etc.
I hold a degree in Information Systems Engineering, with the distinction of having the highest average in my graduating class.
I am a university professor, where I teach Web programming (HTML, CSS, Javascript, Vue.js, Git, and GitHub). I have an average rating from my students of 95/100, which is the highest among all professors.
Currently, I serve as a technical leader and head of product, leveraging my extensive technical and business knowledge. Additionally, I sit on the board of my current company, designing long-term strategies.
I am fluent in both English and Spanish.
I'll be delighted to assist you!
Freelance Payment systems Developer5.0 (321 reviews)
Currently, David is unavailable for new clients - please watch this space for updates.
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David has been a software engineer since 1986. He is a full stack web developer with a wide range of experience. He is *very* good at figuring out solutions that stump engineers with less experience.
David has been a Web Engineer at 10 Up, where he had the honor of working with a world class WordPress development team. With the release of WordPress 4.5 he is proud to add "WordPress core Contributor" to his list of accomplishments.
David has been the chief software architect and CTO of 3B Alliance, an SaaS provider focusing on eCommerce and business to business solutions. In this role he implemented complex payment processing in a distributed environment.
David has over 30 years of Software Engineering and IT experience. Involved in internet development since 1994, David has worked as the Director of IT and Software Engineering for an International Insurance Company and the Chief of South Eastern Operations for an International IT Consulting Firm.
His professional writing has been published by Sitepoint, DICE, Microsoft, C/C++ User's Journal, PC Techniques and John Wiley & Sons.
He has served as an expert witness in Federal court in a software copyright infringement case.
He has worked as a consultant for Fortune 500 companies in the manufacturing and financial industries.
As an Artificial Intelligence and Physics Simulation Programmer for a major game developer his credits include NFL Full Contact Football, Indy Racing, Jeff Gordon XS Racing and Centipede 3D.
Specialties: WordPress, HTML 5, CSS, JavaScript, Web Development, Software Design, Technical Writing, PHP, mySQL, C++, Application Security, eCommerce, API Based Programming, Game Development.
Freelance Payment systems Developer5.0 (258 reviews)
Full Stack Developer for 9 Years
Currently Teaching on Codementor Exclusively on Wednesdays and Fridays.
Please DM to schedule
Full Stack Javascript Developer
React + Redux + Node.js. Strapi.io
Winner of multiple Ethereum Hackathons (EthGlobal, Gitcoin, AAVE, theGraph, Matic, Polygon, Badger)
DeFi Yield Farming Strategy Developer
Former Lead Dev at Ethereum Crypto / DeFi Startup
Experienced in developing with Solidity, theGraph, Hardhat, Vyper, Brownie.
Tons of Wordpress and some Python.
Java during CS.
Understanding of Bitcoin and Blockchain Technology (course at UNIMIB + experience)
Bachelor in CS.
Freelance Payment systems Developer5.0 (102 reviews)
I'm an experienced full-stack developer who has been working as a freelancer for over 10 years now.
Right now I'm focused a lot on developing with Elixir, but most of my time I have spent working on projects with PHP. I love creating software that's usable, testable and maintainable.
Front-end wise my current framework of choice is VueJS.
My projects range from short term projects for smaller customers to bigger and longer projects with bigger companies. My working times are rather flexible, so I don't have a problem working something out that fits me and my clients.
I look forward to working with you!
Freelance Payment systems Developer5.0 (27 reviews)
Working as Staff Software Engineer at VISA INC. Skilled in Java, Microservices, Data Structures, Spring Boot, Rest Apis, MVC, CICD, Bamboo, Jenkins, OOPS, Angular, TypeScript, Javascript. Having strong engineering professional with a Bachelor of Technology (B.Tech.) from Vellore Institute of Technology, Vellore.
Freelance Payment systems Developer5.0 (19 reviews)
Full-Stack Web Developer, started coding from 15.
A goal-oriented web developer with strong commitment to collaboration and solutions-oriented problem-solving.
A self-motivated Web Developer with a high level of experience working on multiple projects.
Passionate and hardworking with penchant for meeting deadlines.
Interested in roles with companies promoting best practices and offering diverse customer projects.
Enjoy process of development, learning new things.
Habit of clean,elegant,sophisticated design style to make code maintainable, reusable.
Technology Stack:
- React.js/Vue.js/Angular.js
- MySQL/PostgreSQL/MongoDB/Redis
- Node.js/Python/Php
- Express/GraphQL/Firebase
- Docker/Nginx
- Socket.io/REST/WebRTC
- Google/Facebook/Twitter/Stripe APIs
- Server-Side Configuration(Ubuntu,HTTP->HTTPS)
- AWS Services
Freelance Payment systems Developer5.0 (16 reviews)
I love learning new things and taking on new challenges. For me, software development is an expression of those goals.
My main experience is in native mobile app development with Swift for the iOS platform and java/kotlin for Android. I am familiar with many apple frameworks including, UIKit, Spritekit, CoreData, AVKit and AVFoundation as well as third-party frameworks like, AWS, Firebase, Admob and Facebook. I also frequently work with Android. I'm currently working on a smart home app that features integrations with AWS and bluetooth libraries.
I care deeply about UI/UX and providing the best possible quality to users. I would be happy to help with any questions or projects.
Freelance Payment systems Developer5.0 (10 reviews)
I drive revenue. All other metrics pale in comparison.
Be it billion dollar brands or startups, I've spent the last two decades architecting technology solutions and innovative search marketing strategies (domestic & international) for e-commerce. I believe in the power of 'what if?'; leveraging hybrid expertise in search engine optimization (SEO), web development, e-commerce, and digital strategy to achieve extraordinary results.
My core competencies include search engine optimization (SEO), search marketing strategy, data wrangling (NLP/computational ontologies), and e-commerce marketing automation.
As founder and CTO of MarketKarma, I oversee organic search strategy for all enterprise accounts and work to create innovative solutions to assist retailers in tackling their online marketing challenges.
I work with brands like..
Ace Cash Express, Athleta, Banana Republic, Blackhawk Network, Blockbuster, Buckle, CheapCaribbean, CheckPast, DashFly, Diesel, DistroMex, Ebates, Eddie Bauer, Fossil, GUESS, Gap, GiftCardMall, Gold's Gym, Horchow, JCPenney, Livingston Lures, Marciano, Mavis Tire, Mavor Lane, Old Navy, Orbitz, Oriental Trading Company, PacSun, Piperlime, Red Envelope, Ritter Dental, SPFM LP, Sacha Cosmetics, ShearComfort, Smart Bargains, Swanson Health, Williams-Sonoma
Connect with me @:
Email: joey@marketkarma.com
Call: (888) 277-0225
Web: https://www.marketkarma.com
Social: https://joeyburzynski.dev
Connect: https://calendarhero.to/JoeyBurzynski
AngelList: https://angel.co/u/joeyburzynski
CoderRank: https://profile.codersrank.io/user/joeyburzynski
CodePen: https://codepen.io/JoeyBurzynski
Quora: https://www.quora.com/profile/Joey-Burzynski
Quora Spaces: https://optimization.quora.com/
LinkedIn: https://www.linkedin.com/in/miamibeachseo/
Fast Company: https://board.fastcompany.com/profile/Joey-Burzynski-Founder-CTO-MarketKarma/12629614-d0b7-4a8c-8076-5be2166473a0
Forbes: https://profiles.forbes.com/members/tech/profile/Joey-Burzynski-Founder-CTO-MarketKarma/72b6886c-bd96-4988-ad8b-14287a291009
GitHub: https://github.com/JoeyBurzynski
Gist: https://gist.github.com/JoeyBurzynski
Google: https://g.dev/EcommerceSEOExpert
LinkTree: https://linktr.ee/joeyburzynski
Medium: https://medium.com/@joeyburzynski
ORCID: https://orcid.org/0000-0002-7448-8294
StackOverflow: https://stackoverflow.com/users/3767344/joeyburzynski
Twitter: https://twitter.com/JoeyBurzynski
Freelance Payment systems Developer5.0 (14 reviews)
Hi! I'm a polyglot technologist with decades of experience in startups and industry, and one of the most active Github users worldwide. Want insights, guidance or help? Get in touch!
How to hire a freelance Payment systems developer on Codementor
STEP 1
Post a Payment systems request
We'll share your request with freelancers with relevant Payment systems skills and expertise.
STEP 2
Review & chat with Payment systems freelancers
Use our messaging feature to instantly chat with freelance Payment systems developers around the world.
STEP 3
Hire the best Payment systems freelancer
Choose the best freelance Payment systems developer that meets your needs.
Frequently asked questions
How long do Payment systems projects normally take?
The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Payment systems project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Payment systems request on Codementor, check out our article.
How much does it cost to hire a freelance Payment systems developer?
We don’t charge anything when you post a freelance hiring request for Payment systems developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.
What makes Codementor Payment systems developers different?
We do a comprehensive technical and communications screen of all Payment systems developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Payment systems developers’ user satisfaction rates.
What happens if I’m not happy with the freelancer’s work?
As a platform, we strive to ensure you’re always happy with your Payment systems project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.
For more answers to frequently asked questions, see here.
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