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Freelance Back-end Development Jobs
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Home Freelance Jobs Back end Development Jobs
Newest
Budget:
$750
Duration:
30 days
New employer
Belarus
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The back-end developer is responsible for creating and maintaining a QA-friendly platform that is scalable, reliable, and highly available. This includes creating APIs and back-end services and integrating them with existing systems. 📌Responsibilities: Work with the front-end team to create an efficient QA process for new features Create APIs for web services and back-end services Create a scalable, reliable, and highly available platform Develop automation processes that monitor the health of the platform Create code quality tools to ensure code quality standards are met
Web Development
Backend development
Web API
API
Api integration
Coding
QA Testing
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Budget:
$2,000
Duration:
30 days
New employer
Australia
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Yii developer needed to work on our backend. Integrate API to our backend with Yii MariaDB experience is needed.
Backend development
Web Development
Yii
API
Api integration
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Budget:
$500
Duration:
14 days
New employer
Canada
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Hello, I'm looking for a Full-stack Odoo developer who can help me with my project daily. Candidate must have experience with the Odoo front-end as well as the back-end.
Full Stack Development
Odoo
Web Development
Front end Development
Backend development
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Budget:
$500
Duration:
14 days
New employer
United States
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Check and deploy We need an ionic developer to check the program for any errors, fix if any and deploy it on android play store. we need you to develop iOS application same as this for iPhone and iPad. Need to coordinate with backend web developer to check the functionality Please bid only if you have good knowledge and experience working with Ionic framework , Android and iOS application We have multiple development projects upcoming and you could be our preferred team member. We could Discuss on the Pricing and come up with a mutually agreeable figure.
App Design
Web application
Android App Development
IOS Development
Ionic Framework
Programming
JavaScript
Java
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Budget:
$500
Duration:
30 days
New employer
Australia
Status:
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We are looking for flutter app development for WhatsApp Call Recording. It should be based on subscription. User can use our app for free at first for 7 days. After that call recordings will be stopped and user will have to pay some amount to continue our service. It's backend should be on firebase. There should be an admin panel on web. All the users, their recordings should be available on our admin panel. User will have to grant all required information to start recording WhatsApp calls. There should be option to record phone calls also. Its source code will be our property. Whenever we demand source code, you can not deny giving source code. Otherwise legal action will be taken. Payment will be made on milestones basis 30% + 30% + 40% . You can never ask the increase the budget or timeline. After accepting the project, you can not work on any other project in any condition during my working hours 10-6 Monday to Saturday. After finishing the work, you will have to upload the app on Playstore also and provide us the release key so that whenever we need we can modify the app.
Android Studio
Android App Development
Mobile Development
Mobile app development
PHP
Google Firebase
Web hosting
Software Development
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Budget:
$850
Duration:
20 days
New employer
Australia
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We are looking for a support to our developer in Serbia on a regular, long-term basis and would start the cooperation with smaller Projects. Project: Programming of a web-based questionnaire  Programming of welcome page with instruction, questionnaire + evaluation, presentation of the test result (depending on achieved score) as well as possibility to receive the test result via e-mail (and/or to print PDF)  Questionnaire with 25 statements, response format: yes/no + calculation of score (percentage value between 0 and 100%)  Presentation of test result: Depending on which value is reached, one of 3 texts is presented + graphical representation of the result Future projects may include: • Testing, developing and maintaining websites, and web applications (Web Shops) and Web Services (REST, SOAP) • Communication with Client/Developers Additional optional responsibilities: • Defining the scope of testing within the context of each release / delivery and acceptance criteria based on scope/requirement • Implementing the role testing plays within the organizational structure • Deploying and managing the appropriate testing framework to meet the testing mandate • Planning and managing the testing effort for any given release and test type • Developing and conducting Unit Tests according to given Software Design Document (SDD) Experience in (Must have): • JavaScript (very important) • Ruby, Python, Perl, PHP,php7 Additonal preferred skills: • QA Management - performing roles as a QA Manager, leading a test team for projects and interacting with peer groups including the business users and developers • Test Driven Development (TDD) along with integration and user acceptance testing • Testing concepts (SDLC, STLC & Defect Life cycle) and Software testing tools (Unit Tests), test automation and UI tests (Selenium) • Web services Testing (SOAP, REST) - writing automated Web service tests using well-known tools (SoapUI) • Familiar with frontend development technologies: HTML5, CSS3 (Bootstrap, Foundation), JavaScript (jQuery, Anguar) • Good knowledge in one of following programming languages: PHP, Python, Ruby or Perl • Understanding of IT networking concepts, network protocols and security • Familiar with backend development in one of following scripting languages: Bash or PowerShell • Experience in work with RDBMS (MSSQL, MySQL, pgSQL, Oracle, SQLite), Document Oriented Databases would be a plus. • Strong understanding of Object Oriented Programming (OOP), other popular software design methodologies would be plus (AOP) • Strong understanding of popular Software Design Patterns (MVC, MVW, MVVM) • Familiar with popular IDEs (Visual Studio, IDEA) • Familiar with various OS architecture (Windows, Linux, OS X)
PHP
JavaScript
Python
Ruby on Rails
Programming
Web Development
Web Design
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Budget:
$600
Duration:
60 days
New employer
United States
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We need someone who can orchestrate the engine, make sure analysis commands work, and ensure that analyses run in containers. The output should be streamed through to our front-end from the back office where it will live temporarily before being analyzed by a database queryable on demand for future use! payment is based on hourly rate
Linux
System Admin
Programming
Backend development
Front end Development
Full Stack Development
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Budget:
$10,000
Duration:
10 days
New employer
United States
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I need a PHP developer to help me as shopping website backend developer, The frontend is ready with a nice ui and the only missing part is its backend.
Backend development
PHP
Laravel
Mobile app development
Web Development
Codeigniter
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Budget:
$300
Duration:
7 days
New employer
India
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H! Al! Need a game developer ASAP for the following assignment. Please find the APK of the version 1 of the game. https://drive.google.com/file/d/136XDnsG3z3-JX7-h0D5ZSM9Pjbh4AgN7/view The requirement for version 2 is as follows: 1. Leader board functionality: Custom global scores list 2. Identification of user with phone number 3. API to buy life and jersey 4. Art to build Shakib shop Please note, the source code for version 1 can be shared with the developer. If you or any of your friends are interested, please eMail me at Reach@Indrajit.in and please don't revert here in PerfectLancer. Please don't initiate any work before I assign the work to anyone. Best! - Indrajit
Web Development
Android App Development
Backend development
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Budget:
$800
Duration:
5 days
New employer
Status:
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We are looking for a senior Python/Django developer. The candidate is first and foremost a senior programmer, with extensive Python experience, and good familiarity with Django. We hope to establish a long term working relationship with the candidate tackling a series of small to medium changes within our existing code-stack. We will start with one such project, and extend from there. The project is unique as it is a well established online educational platform with millions of users throughout the world. We will be working toward a single code-base with an existing senior team of developers. We hope that you will be able to join us at our office in Rockville, MD for onboarding purposes for the first week, and can continue working on the project remotely.
Python
Django
SQL
API
Backend development
Programming
Web Development
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If you're a back-end developer, you know that the best projects are the ones that pay well. But what if you could earn even more money by becoming a freelancer? Freelance back-end development jobs are plentiful, and they can be a great way to earn extra income. Plus, as a freelancer, you'll have the freedom to choose your own projects and set your own hours. So if you're looking for a new way to earn money, consider becoming a freelance back-end developer. You might just find that it's the best decision you've ever made.

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