Job Summary: We are seeking a Senior Java Engineer to join an international team focused on emerging payment technologies, building modern solutions for e-commerce, mobile, and digital platforms with global impact. Key Highlights: 1. Working on innovative products with high global impact 2. Integration into an international team focused on emerging payment technologies 3. Collaboration in agile teams with international exposure Java Engineer | USD $4,000 monthly (you are responsible for your taxes) | Remote → Hybrid CDMX | Independent Contractor (NOT Freelance) Are you a **Senior Java Developer** with solid experience and looking to work on innovative products with high global impact? This opportunity is for you. We are seeking talent to join an international team focused on **emerging payment technologies**, building modern solutions for **e-commerce, mobile, and digital platforms**. What You Should Know Location: **Mexico City** Start: **100% remote** Transition: **Hybrid model starting June/July** Compensation: **USD $4,000 monthly (contract, NOT Freelance)** English: **Conversational fluency (mandatory)** What You’ll Do: * Build robust solutions in **Java (backend + web)** * Design and implement APIs and services (REST/SOAP) * Translate requirements into scalable technical solutions * Develop modern web interfaces * Collaborate in agile teams with international exposure * Participate in technical decisions and architecture improvements * Ensure code quality through best practices We’re Looking For Someone With: ✔ 4–5 years of Java development experience ✔ Solid experience in web applications ✔ Fluent English (daily collaboration with global teams) **Primary Tech Stack:** * Java, J2EE, Spring (MVC, Security) * Web Services (REST/SOAP), JSON, XML * SQL, Oracle * HTML5, CSS3, JavaScript (AngularJS, jQuery) What Will Make You Stand Out: * Experience with **TDD, CI/CD** * Knowledge of **React or modern frameworks** * Experience in **e-commerce or fintech** * Web service security * Mobile development (Android/iOS) Why This Opportunity May Interest You: * Project with real impact in **global payment technology** * Work with **modern technologies and an international team** * Work flexibility (remote → hybrid) * Engineering excellence–focused culture Employment Type: Full-time Salary: $60,000.00 – $65,000.00 per month Benefits: * Free uniforms Experience: * Java: 5 years (Required) * Oracle DB Server: 4 years (Required) * J2EE: 4 years (Required) * SQL: 4 years (Required) * Native Android and/or iOS applications and GitHub usage: 4 years (Required) Language: * Advanced English (Required) Work Location: Remote/hybrid in Mexico City, CDMX