Hire the Best JSP Developers
in Brazil

At 19, I left a small town in the Brazilian Amazon to code for companies in Greece. No fluent English. No connections. Just the conviction that good work speaks for itself. By 20, I had already shipped production code in 5 countries (Brazil, Greece, USA, Peru, Philippines) — building everything from eBay management dashboards to tax systems processing millions of telecom transactions per month. Today, at 21, I work as a Full Stack Developer Analyst at Global Hitss/Grupo Easy, developing mission-critical billing and tax document systems for Claro and Embratel. My work spans the entire development lifecycle: business analysis and requirements gathering, backend development in Natural One/Mainframe, and frontend development in JSP with CICS as middleware. I manage approximately 8 simultaneous projects involving telecom billing, regulatory compliance (Anatel), and tax document processing — systems that impact millions of users. What I bring to the table: → Mastery of the Vue.js ecosystem (Vue 3, Nuxt.js, Pinia, Vuetify) → Large-scale enterprise systems (Java/JSP, COBOL, Natural One, IBM Mainframe) → TypeScript, JavaScript, REST APIs, Spring Boot → Business analysis, requirements gathering, and full project ownership → Multicultural remote collaboration across 4 different time zones → Certified Agile/Scrum methodology Harvard CS50 certified. Scrum certified. Always learning. Previously: Frontend Developer at KNN Idiomas (one of the largest language school networks in Latin America) and at Hellenic Technologies (Athens, Greece — eBay product management dashboard). Open to international opportunities, collaborations, and conversations about Vue.js, enterprise systems, or full-stack development.

I’m a Full-Stack Developer specialized in building MVPs, marketplaces, e-commerce platforms, backend APIs, admin dashboards, and third-party integrations. I have hands-on experience with Java, Spring Boot, Next.js, React, PostgreSQL, Supabase, Docker, REST APIs, authentication flows, payment integrations, shipping/logistics APIs, and internal business tools. Recently, I have been building a private luxury second-hand marketplace MVP from scratch, including seller flows, product registration, order management, payment split logic, shipping integration, return/refund workflows, admin features, and database modeling. This gives me practical experience with real product problems, not just isolated coding tasks. I can help you with: Building MVPs and web applications Creating or fixing REST APIs Developing admin dashboards Implementing marketplace and e-commerce features Integrating payment, shipping, CRM, ERP, or external APIs Fixing bugs in React, Next.js, Java, or Spring Boot applications Improving backend structure, database design, and code organization My focus is to deliver clean, maintainable, and practical solutions that solve the business problem, not just write code. Let’s discuss your project and find the best way to move it forward.

With over 10 years of experience in web and mobile development, I specialize in solving the challenges you face with innovative, efficient solutions. Proficient in all stages of advanced web development, I bring expertise in a wide range of technologies, including: - React.js - Next.js - JavaScript - TypeScript - GraphQL - Node.js - And more. Driven by a passion for technology, I believe in the power of innovative solutions to change the world. Let's work together to tackle your toughest challenges.

I specialize in React and Next.js on the frontend, and Node.js/NestJS on the backend, building SaaS platforms, REST & GraphQL APIs, and TypeScript-first architectures that teams can actually work with long-term. I work with Claude Code Pro as a core part of my development workflow. That means faster iterations, more thorough code review at every step, and more of my time spent on the decisions that actually affect your project, architecture, performance, and reliability. What I build: → React & Next.js — SSR, Tailwind CSS, Material UI, performance → Node.js · NestJS · Express — REST & GraphQL APIs, authentication → PostgreSQL — schema design, query optimization, data modeling → TypeScript — frontend and backend, no exceptions → Clean architecture — SOLID principles, microservices, CI/CD I work best with startups and product teams who need a developer that estimates honestly, communicates clearly, and delivers without surprises. Send me a message about what you're building, I'll tell you straight if I'm the right fit.

With 3+ years of experience in software development, I completed a postgraduate degree in software engineering. I have expertise in Java and advanced frameworks, including the entire Spring ecosystem, JPA, and Hibernate. My specialization extends to developing robust backend solutions, integrating modern microservices patterns, and is complemented by my knowledge in frontend development, mainly with Angular and JSP pages. I have a strong orientation towards agile development, with a particular focus on code quality and the implementation of unit and integration tests using JUnit and Mockito to ensure software robustness and reliability. Skills by years: Java: 3+ years Springboot: 2+ years Angular: 1+ year Microservices: 2+ years Docker: 1+ year Hibernate: 2+ years JPA (Java Persistence API): 2+ years API Rest and Restful: 2+ years Scrum: 2+ years JUnit and Mockito: 1+ year PostgreSQL: 1+ year IBM-DB2: 2+ years Oracle: 1+ year MySQL: 1+ year H2 Database: 2+ years Key Technologies:

17x Salesforce Certified Professional with 26 years of software development experience, working with global teams and delivering Salesforce, Apex, Python, AI, automation, and integration solutions. Recently certified in AI Fluency: Framework & Foundations and Claude 101, I actively use Generative AI and LLMs to improve software development, problem-solving, and productivity. You can also check out my YouTube channel, where I share Salesforce content in English, Spanish, and Portuguese: YouTube: @santosforce6170 Trailhead profile: csantos1 And github repository, where you can really see how I’m coding: github charleston76 interviewChallenge ● Salesforce Certified Platform Developer II ● Salesforce Certified Platform Developer I ● Salesforce Certified Salesforce Certified Application Architect ● Salesforce Certified AI Associate ● Salesforce Certified Salesforce Certified Sharing and Visibility Architect ● Salesforce Certified Salesforce Certified Data Architect ● Salesforce Certified Associate ● Salesforce Certified Administrator ● Salesforce Certified Advanced Administrator ● Salesforce Certified Sales Cloud Consultant ● Salesforce Certified Service Cloud Consultant ● Salesforce Certified Experience Cloud Consultant ● Salesforce Certified Platform App Builder ● Salesforce B2B Commerce For Administrators Accredited Professional ● Salesforce B2B Commerce For Developers Accredited Professional ● Salesforce Certified AI Specialist; Results-driven software engineer with 10+ years of experience integrating innovative features and optimizing user experiences across Salesforce platforms. Skilled in creating tools, implementing full stack features and usability. Strong salesforce knowledge with 16 active certifications. Proficient in HTML, CSS, Git, JavaScript, Node.js, DML statements SOSL, SOQL, Triggers, Apex classes and Tests, Visualforce, Aura Components and LWC, Governor limits, Batch process, Design Partners, AI capabilities like Einstein bots, Agentforce, Prompt Builder and etc. Strong leadership and mentoring abilities, guiding junior developers throughout the software development life cycle. Responsibility, attitude towards the client, proactiveness, dynamism, fluency, objectivity, perseverance, persuasion, logical reasoning, interpersonal skills, communicative, organized, detail oriented, with facility for teamwork, personal competence, resistance to frustration and pressure, adaptability and sociability.