We are looking for an experienced Full-Stack Web Developer with strong expertise in backend development, automation, and server-side solutions for ongoing and complex projects.
The ideal candidate has deep knowledge of PHP (5–8+), JavaScript, and Python, along with extensive experience in building scalable websites, automation tools, bots, and integrating third-party services such as payment systems and VoIP platforms.
This project is suitable for a senior-level specialist who can work independently, propose technical solutions, and deliver stable, production-ready systems.
Responsibilities
Develop and maintain high-performance websites and web applications
Build automation tools, bots, and data parsers
Create and maintain Telegram bots with complex logic
Integrate payment systems via APIs (Stripe, PayPal, crypto, etc.)
Configure and maintain servers (Linux-based environments)
Work with Asterisk + SIP / VoIP solutions (projects starting from $500+)
Optimize performance, security, and scalability of existing systems
Collaborate on technical architecture and system improvements
-
1 day3000 USD
407 5 2 1 day3000 USDWe are abruptly switching from house construction to work projects? A great strategy — large-scale construction requires good budgets! 😉
This is a very interesting Senior-level vacancy from a client in the USA (Austin). The required tech stack hits the mark: a strong backend in PHP, confident administration of Linux servers, and skills in creating complex automation systems are needed here.
I can help craft a powerful response (cover letter) for this project. As correctly noted in the interface, the platform prohibits leaving contact details in the comment field, so we need to immediately "hook" the client with a strong technical background in the very first message.
Here is a response option where we will combine the client's requirements with your expertise:
Hello!
…
I have reviewed your project. The tasks of creating high-load web applications, integrating third-party services, and automation are exactly the profile I specialize in.
I have deep expertise in backend development in PHP (including confident work with modern ecosystems like Laravel) and Python. I also independently handle server administration based on Linux. I can not only design the logic but also ensure the stable operation of the infrastructure, including setting up S3-compatible object storage and scaling.
I have extensive practical experience in creating bots with complex logic (including developing smart AI managers for messengers) and integrating various APIs (from payment gateways to complex internal systems). I am ready to take on tasks related to integrating Asterisk + SIP/VoIP.
I am used to working independently and am ready to offer reliable, production-ready architectural solutions.
I would be happy to discuss the technical details of your project!
Current freelance projects in the category PHP
Horoshop SpecialistNeed a specialist who can correctly set up the product Feed. Problem: Currently, over 13,000 products are being uploaded with the same type value (e.g., "everything for manicure and pedicure"). Because of this, it is impossible to segment products in Google Ads and set different… PHP, Website Maintenance ∙ 13 hours 17 minutes back ∙ 16 proposals |
Make sure that order emails from the store do not go to spam.Currently, there is a store on OpenCart, and order emails are landing in spam. We need to ensure they go to Inbox (ukr.net gmail) and check it. The hosting provider wrote: Poor email delivery may be related to a low sender reputation - IP or domain. In this case, we can advise… PHP, Web Programming ∙ 1 day 14 hours back ∙ 47 proposals |
Transfer the fully ready adaptive HTML5 structure to WordPress.
267 USD
I am looking for an experienced WordPress developer who can convert our meticulously prepared static HTML5/CSS3 code into a high-performance custom WordPress theme. The frontend is almost ready (about 99%): semantic markup, metadata, and multilingual structure (hreflang) are… Content Management Systems, PHP ∙ 4 days 16 hours back ∙ 69 proposals |
GoPos IntegrationHello, has anyone done an integration of GoPos with a custom website for a restaurant in Poland? I need help, their documentation is very sparse, there is only swagger and it lacks descriptions. https://app.gopos.io/doc/swagger-ui/index.html The essence is this: we used their… PHP, Web Programming ∙ 5 days 8 hours back ∙ 26 proposals |
Write meta data for ALT using AIA website on Laravel, the site has many images for which it is necessary to automatically generate correct semantic and relevant ALT descriptions for the images, with the possibility of verification. AI & Machine Learning, PHP ∙ 6 days 5 hours back ∙ 35 proposals |