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Estou implementando a Appmax como gateway de cartão de crédito em uma loja OpenCart 2.2 e preciso do módulo completo para isso. Requisitos principais • Integração via API Appmax. • Fluxo de autorização e captura automáticas — nada de processos manuais. • Suporte às principais bandeiras aceitas pela Appmax (Visa, Master, etc.). Escopo funcional O módulo deve ser instalado e habilitado a partir do admin do OpenCart 2.2 sem interferir em extensões já existentes. Aceito que a interface utilize o design padrão da plataforma; portanto, você pode se concentrar na lógica e na segurança da transação. Logs e mensagens de erro devem ser claros para facilitar qualquer futura auditoria. Entrega esperada 1. Código-fonte do módulo com instruções de instalação. 2. Guia rápido de configuração (chaves da Appmax, opções de parcelamento, captura). 3. Teste de checkout demonstrando uma compra aprovada e outra recusada. Conhecimento desejável Experiência prévia em módulos de pagamento para OpenCart, uso de cURL ou Guzzle para integração REST, boas práticas de PHP 5.4 (versão nativa da 2.2). Se já tiver exemplos de plugins semelhantes, inclua no portfólio. Pretendo homologar e colocar em produção logo após a entrega, então valorizo código limpo e bem documentado.
Project ID: 40598219
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Active 11 hours ago
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140 freelancers are bidding on average $375 USD for this job

Hi there, We understand you need a complete Appmax module for OpenCart 2.2, integrating Appmax as a credit card gateway via API, with automatic authorization and capture flow, and support for main brands like Visa and Mastercard. Our team has experience with payment modules for OpenCart and REST integration using cURL, and we've developed similar plugins, such as a payment gateway for a luxury leather retailer using PHP and custom design. With 17 years of web development experience and a 5.0 rating across 458 reviews, we're confident in delivering a well-documented and secure module. We'll provide the module source code, installation instructions, a quick configuration guide, and a checkout test demonstrating one approved and one rejected purchase. One question: Are there any specific security or compliance requirements we should be aware of during the development process? Feel free to message us to discuss the details! — Webbook Studio
$490 USD in 10 days
9.2
9.2

Hi there, I understand that you are looking to integrate Appmax as a credit card gateway on your OpenCart 2.2 store. To achieve a seamless integration, I will create a complete module that interfaces with the Appmax API. This module will ensure a fully automated flow for transaction authorization and capture, eliminating any need for manual processes. Here’s how I plan to approach it: - Develop a custom OpenCart module specifically for Appmax integration. - Utilize Appmax's API to handle all transaction types, ensuring smooth communication between your store and Appmax. - Implement automated authorization and capture processes directly linked with the Appmax system to streamline your payment operations. - Ensure robust code structure with PHP and cURL for efficient API calls and responses. - Focus on a user-friendly setup within your OpenCart admin panel for easy management. - Conduct thorough testing to ensure reliability and security of the payment process. This solution will not only meet your immediate requirements but will also enhance the overall functionality and user experience of your e-commerce store. I look forward to the opportunity to work together on this project. Best Regards, Khorshed Alam, RS Software
$340 USD in 7 days
9.6
9.6

Interesting project, Vou entregar o módulo Appmax para seu OpenCart 2.2 com autorização e captura automáticas via API REST, suporte a Visa, Master e demais bandeiras, além de logs claros para auditoria. O painel admin terá campos para chaves da Appmax, opções de parcelamento e modo sandbox/produção. Em um módulo de gateway similar para OpenCart 2.x, estruturei os logs de transação por status (aprovada, recusada, erro), o que facilitou muito a depuração em produção. Farei o mesmo aqui. Perguntas: 1) Você já possui as credenciais de sandbox da Appmax para testes? 2) Quantas opções de parcelamento (ex: até 12x) o módulo deve suportar? Me envie o acesso ao admin da loja e confirmo a compatibilidade com suas extensões atuais ainda hoje. Looking forward to your response. Best regards, Kamran
$275 USD in 10 days
8.6
8.6

Hi, The biggest technical challenge here is ensuring seamless integration with the Appmax API while maintaining compatibility with existing OpenCart extensions. I propose to develop a module that allows for automatic authorization and capture of transactions, ensuring that the integration is secure and efficient. The module will be designed to be easily installed from the OpenCart admin panel, with clear logging and error messages for future audits. I have extensive experience with payment modules for OpenCart and am familiar with using cURL for REST integrations. I will ensure that the code is clean and well-documented, meeting your requirements for quick deployment. If you have any specific questions or need further clarification, please let me know. Best regards.
$250 USD in 3 days
8.2
8.2

Hi, I'm a senior developer with 20+ years of experience, Top Rated on Freelancer.com with 1,500+ completed projects and a 5-star record, and I've built dozens of OpenCart payment modules, so this is straightforward. I'll create a clean, standalone OpenCart 2.2 module that installs via the admin panel without touching other extensions, integrates with Appmax's REST API using cURL for authorization and auto-capture, and handles Visa, Mastercard and other supported flags. I'll include clear error logging, a one-page config guide with your Appmax keys and installment options, and a short test run showing approved and declined transactions. The code will follow PHP 5.4 standards native to OpenCart 2.2 and won't interfere with your existing setup. You'll get the full source, install instructions, and a quick demo to move straight to production testing.
$250 USD in 8 days
8.0
8.0

Hi, I bring the rare combination of technical expertise, security consciousness, and business acumen necessary to deliver on your particular project needs. Our skills are perfectly aligned with your requirements - extensive experience with OpenCart modules, expertise in API integrations using cURL and Guzzle, and fluency in PHP 5.4 specifically– the native version in use. Having built numerous eCommerce platforms, I understand the paramount need for smooth online transactions; hence I am well-versed with major payment gateways including Appmax. Additionally, our proficiency in using various technologies like PHP (Laravel, CodeIgniter, CakePHP, Yii), and REST APIs lends itself perfectly to this project. Our work is known for delivering high-functioning, secure solutions that prioritize user experiences. Furthermore, our strong inclination towards clean code and comprehensive documentation guarantees that any future adjustments or audits can be tackled with ease. Thanks....
$750 USD in 7 days
8.1
8.1

Posso construir o módulo completo da Appmax para OpenCart 2.2 com autorização e captura automáticas, exatamente como você precisa. Vou desenvolvê-lo como uma extensão de pagamento nativa (controller/model/language) que instala e habilita pelo admin sem tocar nas extensões existentes, usando cURL para consumir a API REST da Appmax, respeitando a sintaxe do PHP 5.4 nativo da 2.2. O fluxo cobre tokenização/autorização e captura automática das principais bandeiras (Visa, Master, etc.), com opções de parcelamento configuráveis e atualização correta do status do pedido, além de logs claros e mensagens de erro legíveis para auditorias futuras. Na entrega você recebe o código-fonte com instruções de instalação, um guia rápido de configuração (chaves, parcelamento, captura) e um teste de checkout demonstrando uma compra aprovada e outra recusada. Trabalho com código limpo e bem documentado para você homologar e subir em produção sem dores de cabeça — posso começar imediatamente.
$250 USD in 1 day
7.6
7.6

Olá! Tenho experiência no desenvolvimento de gateways de pagamento para OpenCart e posso integrar a Appmax com autorização e captura automáticas, seguindo as boas práticas de segurança e compatibilidade com o OpenCart 2.2. Antes de começar, preciso confirmar: * O checkout é o padrão do OpenCart? * Você já possui as credenciais da API Appmax (sandbox/produção)? Posso iniciar imediatamente e entregar um módulo limpo, estável e pronto para produção.
$300 USD in 7 days
7.7
7.7

Hi I understand you want a complete Appmax payment gateway module for OpenCart 2.2, with full REST API integration, automatic authorization and capture (no manual steps), support for the main card brands Appmax accepts, and clear logs/errors for audit. You also want it installable and enable/disable-able from the OpenCart admin, using the platform’s standard UI so it won’t interfere with existing extensions. I’m a web developer experienced in eCommerce payment integrations and API-driven automation. For this module, I’ll implement PHP 5.4-compatible OpenCart 2.2 code, use cURL for Appmax API calls, and add a careful error-handling layer so checkout behavior and audit trails remain predictable. Approach: first map the Appmax REST endpoints and payloads required for authorization and immediate capture; second build the OpenCart payment extension (admin settings, frontend checkout hook, and gateway callbacks) with isolation to avoid conflicts; third add robust logging with admin-visible messages and safe failure handling; and finally provide a testing setup and a checkout demonstration for one approved and one declined payment. You’ll receive the module source code with install instructions and a concise configuration guide (Appmax keys, installments options, and capture behavior) to support quick homologation and production rollout. Best, Justin
$500 USD in 7 days
6.7
6.7

Hello, I am very interested in your project involving the implementation of the Appmax gateway for credit card processing in an OpenCart 2.2 store. My expertise in PHP, Software Development, Web Development, API, and REST API aligns perfectly with the requirements for this project. I understand the need for seamless integration via the Appmax API, automated authorization and capture processes, and support for major credit card networks. I plan to develop the complete module within the OpenCart 2.2 admin interface, ensuring it does not disrupt any existing extensions. Clear error logs and messages will be integrated to facilitate future audits. Upon completion, I will provide the module's source code, installation instructions, a quick setup guide, and demonstrate successful and failed checkout tests. - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH I look forward to discussing this project further with you. Best regards, Warda Haider
$250 USD in 4 days
6.8
6.8

Hi there! I'm Markiyan, a full stack developer and CEO of a web agency, and I'd love to help you build the Appmax payment module for your OpenCart 2.2 store. I understand you need a seamless integration via Appmax API, with automatic authorization and capture flow, supporting major credit card brands like Visa and Mastercard. My team and I have experience with payment gateway integrations, including similar projects like the integration of PayPal and Stripe with OpenCart. We've worked with OpenCart 2.2 and have expertise in using cURL for REST API integrations, ensuring secure and reliable transactions. I can deliver a well-documented, clean module source code with installation instructions, a quick configuration guide, and a checkout test demonstrating both approved and rejected purchases. One question: are there any specific security or compliance requirements (e.g., PCI-DSS) that the module needs to adhere to, beyond the standard Appmax API integration? Feel free to message me to discuss the details! — Markiyan
$550 USD in 10 days
6.9
6.9

Hi, I'm interested in your project "Módulo Appmax OpenCart 2.2". I have relevant experience and can deliver quality results within your timeline and budget. I'd love to discuss the details. Please feel free to reach out.
$250 USD in 5 days
6.8
6.8

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Você já possui as chaves da Appmax para a integração API? Let’s discuss over chat! Regards, Arpit Jaiswal
$250 USD in 25 days
7.1
7.1

Hi, I can build the OpenCart 2.2 module for Appmax with automatic authorization and capture flows that match your gateway’s API. I recently integrated a similar payment module for MercadoPago in an older OpenCart setup, where we had to handle legacy PHP quirks and ensure no conflicts with existing extensions. I’d approach this using REST with Guzzle for secure API calls, keeping the module lightweight and avoiding heavy dependencies since OpenCart 2.2 is still running on PHP 5.4. The biggest improvement will come from clear logging and error messages tied directly to Appmax’s response codes. I’ll write the code in isolated classes so you can review changes easily, add unit tests for the API interactions, and include a quick setup guide covering keys, parceling, and capture modes. The goal is a stable payment flow that reduces manual work and keeps audits simple without touching other parts of your store. Happy to adjust the module to fit Appmax’s latest API quirks if needed. I can start right now. Thanks, Denis.
$400 USD in 3 days
6.3
6.3

Hello, I came across your Módulo Appmax OpenCart 2.2 and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in PHP, HTML, Web Development, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
$250 USD in 4 days
6.3
6.3

Sua integração Appmax vai falhar em produção se o módulo não implementar retry logic para timeouts de API e não validar tokens de cartão antes de enviar para captura. OpenCart 2.2 roda PHP 5.4, que não tem suporte nativo a TLS 1.2 — isso bloqueia chamadas para gateways modernos se o servidor não estiver configurado corretamente. Quick questions - você já confirmou que o ambiente de produção suporta TLS 1.2 via cURL? E qual é o volume esperado de transações simultâneas durante picos de venda? Here is the architectural approach: - APPMAX REST API: Implemento fluxo completo de autorização/captura automática com tratamento de erros específicos por bandeira (Visa, Master) e logs estruturados para auditoria PCI. - OPENCART 2.2 COMPATIBILITY: Desenvolvo módulo usando padrão MVC nativo da plataforma com hooks que não conflitam com extensões existentes, testado em PHP 5.4 com fallback para cURL legacy. - PAYMENT GATEWAY INTEGRATION: Configuro retry automático para falhas de rede, validação de CVV/CPF antes da captura, e interface admin para gerenciar credenciais Appmax e regras de parcelamento sem editar código. Já construí 4 módulos de pagamento para OpenCart (PagSeguro, Mercado Pago) que processam 10K+ transações mensais sem downtime. Vamos agendar 15 minutos para revisar a documentação da API Appmax antes de eu começar o desenvolvimento.
$450 USD in 10 days
6.9
6.9

A integração da Appmax no OpenCart 2.2 parece simples à primeira vista, mas o ponto que normalmente causa problemas é manter o fluxo de autorização e captura totalmente automático sem afetar o checkout nem outras extensões de pagamento já instaladas. Minha abordagem seria desenvolver o módulo seguindo a estrutura nativa de pagamentos do OpenCart 2.2, mantendo a lógica isolada para facilitar futuras atualizações. Como essa versão trabalha com PHP 5.4, também tomaria cuidado para manter compatibilidade e fazer as chamadas REST via cURL (ou Guzzle, se fizer sentido para o ambiente), além de registrar respostas da API e falhas em logs claros para auditoria. A entrega inclui o módulo com instruções de instalação, guia de configuração das chaves e opções da Appmax, além da validação do checkout com um pagamento aprovado e outro recusado para confirmar todo o fluxo antes da homologação. Só tenho uma dúvida que impacta a implementação: a loja já está em produção com um checkout personalizado ou utiliza o checkout padrão do OpenCart 2.2?
$500 USD in 7 days
6.5
6.5

Olá! Entendo que você precisa de um módulo completo de gateway de pagamento Appmax para OpenCart 2.2, com integração segura via API, fluxo automático de autorização e captura, suporte a cartões, logs claros e configuração administrativa simples, sem afetar as extensões já existentes. Posso desenvolver um módulo em PHP limpo e bem documentado, compatível com o OpenCart 2.2, incluindo arquivos de instalação, guia de configuração, configuração da API e testes de checkout para transações aprovadas e recusadas. Tenho experiência no desenvolvimento de integrações personalizadas de gateways de pagamento e módulos de e-commerce, entregando soluções confiáveis focadas em segurança, desempenho e uma experiência de usuário fluida. Gostaria muito de discutir os requisitos no chat e compartilhar exemplos relevantes de integrações de pagamento semelhantes que já realizei. Atenciosamente, Farhin B
$252 USD in 6 days
6.7
6.7

Hi, Já trabalhei com desenvolvimento e integração de módulos de pagamento em OpenCart, incluindo gateways via API REST e fluxos de autorização/captura. Entendo que o principal desafio aqui é criar uma integração segura com a Appmax sem impactar o funcionamento atual da loja. Vou desenvolver o módulo compatível com OpenCart 2.2 usando PHP 5.4, com configuração pelo painel admin, integração via API, tratamento de erros, logs claros e suporte ao fluxo completo de checkout. Também realizarei testes com pagamentos aprovados e recusados antes da entrega. Entregarei o código-fonte organizado, instruções de instalação e um guia de configuração para facilitar a homologação e manutenção futura. Best Regards, Fizza Nadeem K
$250 USD in 4 days
6.1
6.1

As an experienced full-stack developer at Web Crest, I assure you of a seamless integration of the Appmax gateway into your OpenCart 2.2 store architecture. Consider my expertise in eCommerce, HTML, Payment Gateway Integration, PHP, and REST API as a strong suit for this task. With my experience in software development and Web Development, I will construct a module solely centered around Appmax's API, automating the authorization and capture process seamlessly, and ensuring compatibility with all major credit card issuers including Visa and MasterCard. I realize your need for stability and ease-of-use. Rest assured that I will carefully install and enable the module for your OpenCart 2.2 admin without interfering with any existing extensions or compromising on security standards. I appreciate that the interface adheres to OpenCart's standard design for familiarity but will focus on developing a robust logic flow ensuring clear error logging to facilitate future use of the system. Furthermore, emphasize on value clean and well-documented code which is what I deliver – your prosperity post deployment is as meaningful to me as it is to you. Please go through my portfolio as it contains payment-related plugins similar to this project offering an assurance of meeting your expectations. It'd be an honor if we can partner in bringing this vision to life promptly and hassle-free.
$300 USD in 3 days
6.4
6.4

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