Hire the Best Solution Architects
in Brazil

C#, ASPNET MVC, MS SQL Server, IIS, PHP, MySQL/MariaDB, REST and SOAP APIs, complex system integrations (Brivo, Eagle Eye, CICS, IMS), payment gateway integrations (Stripe, PayPal, etc.), B2B software integrations (QuickBooks, JobDiva, and others), with 20+ years of experience across the full software development life cycle. Over the last 10+ years, I have been actively working with cloud environments such as AWS and Azure, designing, deploying, and operating scalable, secure, and production-grade systems. I also bring 15+ years of experience with HTML, CSS, Vanilla JavaScript, and multiple JavaScript frameworks, delivering high-quality, responsive web applications used in real-world production environments. Expertise includes ERP and CRM implementations, Business Intelligence, KPI definition, process mapping and automation, and bespoke software development — always with a strong focus on results, sustainability, and business clarity. In recent projects, my role has leaned heavily toward Solution Architecture, including system design, integration strategy, legacy modernization, and cloud-ready architectures — always balancing technical decisions with business impact. Last 2 years dedicated to create strategies, policies and practices to use AI sustainabily, focused in get the most of the technology at reasonable costs, preventing code slop and sdlc overstress. I particularly care about getting your team ready to be the next generation of developer fully AI ready. Most importantly, I know how to help your company grow, your startup win, and your product shine by applying all my skills to one thing: business success. If you are looking for organization, versatility, architectural thinking, and a strong focus on results, it will be a pleasure to work with you.

I build mobile apps — the real kind, native, shipped to the store, used by actual people — and lately the AI systems inside them. I've been doing the first for 20 years and the second long enough to know where it actually pays off. I'm Expert-Vetted on Upwork (top 1% of talent), with 100% Job Success, 5,700+ hours, and $200K+ earned. Behind that is 20+ years in software — a decade architecting enterprise systems at Accenture for Fortune 500s, then CTO of a SaaS startup I scaled from 3 to 30+ engineers and took to consumer scale. I'm completing Stanford's AI Professional Program now. What you get is a CTO-caliber technologist who never stopped writing production code. I work two ways, depending on what you need: ⸻ * Mobile Apps — zero to App Store * (fixed-price) You have an idea or a validated concept; I deliver the finished app, live in the App Store and Play Store. Architecture, design, frontend, backend, deployment, and the part most people underestimate — actually getting through store review, native builds, push, Live Activities, the works. I've shipped 20+ mobile apps, several used by hundreds of thousands of people, and I handle the whole build personally. Shipping a native app to a store is a different discipline than deploying a web app, and it's the discipline I've spent years in. * AI Systems and other complex software — design & build * (hourly) Production AI/LLM systems, not prototypes. My recent work is a multi-vendor LLM pipeline that benchmarked 21 model-and-strategy combinations across Claude, GPT, and Gemini over 54 recipe sources in 7 countries — automated quality scoring against an Opus gold-standard reference, and cost tuned across a 150x price spread down to the best quality-per-dollar. The hard part of AI work isn't calling an API; it's knowing where AI actually earns its keep, which model fits which job, and how to architect a pipeline that holds up in production. That's what I do, then I build it — often straight into the mobile products above. ⸻ The background behind that: 10 years at Accenture on large-scale systems for Fortune 500s in healthcare, telecom, oil & gas, and retail. Then CTO at a SaaS startup — engineering scaled 3 to 40, a multi-service platform shipped with payments, identity, and real-time processing running at consumer scale. 📎 Stanford — AI Professional Program (completing August 2026) 📎 Kellogg — Product Strategy 📎 TOGAF Certified Enterprise Architect ⸻ Native Mobile (React Native / Expo, App Store & Play Store delivery) · TypeScript/JavaScript · LLM APIs (Claude, GPT, Gemini) · Prompt Engineering · Multi-Model Pipelines · React · Next.js · Node.js · Supabase · PostgreSQL · AWS · Solution Architecture

Build Secure, Scalable, and Business-Oriented Software. I am a Senior Software Architect and Information Security Expert with a background in leading complex technological projects for global players like Samsung and major financial institutions. Today, I am the Founder & CEO of DIGIKOI, a specialized software house. When you work with me, you get the personalized attention of a senior expert backed by the robust infrastructure and specialized team of my agency. Why partner with me? Most developers simply write code; I build business assets. My background combines deep technical engineering with Governance, Risk, and Compliance (GRC). This means I don't just deliver features; I ensure your product is secure (ISO 27001/GDPR ready), scalable, and built to last. My Core Expertise: Secure Software Development: Web Platforms, Custom Systems, and Mobile Apps (iOS/Android) built with a "Security by Design" mindset. Strategic Leadership: Acting as a Technical Partner or Fractional CTO to guide your digital transformation and architectural decisions. Cybersecurity & Compliance: Expertise in ISO 27001, PCI-DSS, GDPR/LGPD, and Risk Management to protect your IP and user data. What I bring to your project: - Full-cycle development (Design, Code, QA, DevOps). - Professional CI/CD pipelines and version control environments. - A focus on ROI and business impact, not just code. Whether you need to build a platform from scratch, secure an existing application, or scale your tech operations, I bring the maturity and structure necessary for success. Let's discuss how we can turn your complex requirements into an intelligent, secure digital experience.

🌟 Projects delivered with up to a 70% reduction in operational costs. ⏱️ Refactoring that improved performance by 50%. 🥇 Top 3% of Upwork Talent. 🏆 10+ years of Backend Developer experience. My clients receive high-quality, scalable, and production-ready software solutions, boosting their business efficiency and profitability. This gives them a competitive edge and paves their way towards becoming market leaders. 𝐍𝐞𝐞𝐝 𝐞𝐟𝐟𝐞𝐜𝐭𝐢𝐯𝐞, 𝐇𝐢𝐠𝐡-𝐈𝐦𝐩𝐚𝐜𝐭 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬? 𝐇𝐞𝐫𝐞'𝐬 𝐰𝐡𝐚𝐭 𝐈 𝐜𝐚𝐧 𝐨𝐟𝐟𝐞𝐫: ✔️ API development for seamless integration across platforms. ✔️ Third-party API integration with any external services. ✔️ Custom automation systems built from the ground up for your business processes. ✔️ Cloud infrastructure tailored to your specific requirements and growth plans. ✔️ Scalable database architecture designed for high performance. ✔️ Real-time monitoring and analytics with custom or commercial dashboards. ✔️ Complete CI/CD pipelines automating testing, deployment, and notifications. ✔️ Comprehensive testing coverage including unit, integration, and end-to-end scenarios. 𝐈 𝐜𝐚𝐧𝐧𝐨𝐭 𝐡𝐞𝐥𝐩 𝐞𝐯𝐞𝐫𝐲𝐛𝐨𝐝𝐲, 𝐛𝐮𝐭 𝐰𝐞 𝐦𝐚𝐲 𝐛𝐞 𝐚 𝐠𝐫𝐞𝐚𝐭 𝐟𝐢𝐭 𝐢𝐟 𝐲𝐨𝐮 𝐚𝐫𝐞 𝐭𝐡𝐢𝐧𝐤𝐢𝐧𝐠: ● "I need a solution that I can trust 100% to solve our problems RIGHT.” ● "We have ambitious goals and need a solution architect who can build scalable solutions to match our growth.” ● "I'm not satisfied with out-of-the-box applications. We need an expert who can build custom applications to meet our requirements.” ● "We're willing to invest in premium solutions that adhere to the highest industry standards. That’s why we need the BEST developers who place a premium on quality.” 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐰𝐢𝐭𝐡 𝐦𝐞, 𝐲𝐨𝐮 𝐰𝐢𝐥𝐥: 🔸 Save money with maintainable, well-architected code that's cheaper to scale and extend than rebuilding from scratch. 🔸 Focus on growing your business while I handle all technical complexities and challenges. 🔸 Have a reliable partner committed to flawless execution, on-time delivery, and transparent communication. 🔸 Get comprehensive support and warranty on every delivered project. I stand behind my work. 🔸 Scale faster with solutions designed for long-term growth and adaptability to changing business needs. 🟢 𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐓𝐚𝐤𝐞 𝐭𝐡𝐞 𝐍𝐞𝐱𝐭 𝐒𝐭𝐞𝐩? I'm here to help you succeed. Share your project requirements or technical challenges, and I'll provide honest feedback on the best path forward. Looking forward to connecting! 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 & 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞: Node.js, TypeScript, JavaScript, NestJS, Express.js, Fastify, AWS, Terraform, CloudFormation, PostgreSQL, MySQL, MongoDB, Redis, DynamoDB, RESTful APIs, GraphQL, OpenAPI, Auth0, AWS Cognito, OIDC, CASL, Docker, Kubernetes, EKS, ECR, GitHub Actions, CI/CD, Vitest, Jest, ESLint, Prisma, AWS Lambda, EC2, API Gateway, VPC, Load Balancer, IAM, KMS, S3, CloudFront, Route 53, SQS, SNS, EventBridge, SES, CloudWatch, X-Ray, Athena, Stripe, Google APIs, AWS Chatbot, Infrastructure as Code, Microservices, Serverless Architecture, Backend Development, API Development, API Integration, Database Design, Cloud Architecture, DevOps, Testing, Software Development, Solution Architecture

Product-minded generalist with 5+ years of experience across software development, operations & marketing. Skilled in building automation, setting up integrations, robust analytics workflows, and CRM systems that significantly improve visibility and reduce manual ops work (up to 70% efficiency gains). Experienced in collaborating with cross-functional teams across US and UK organizations accross different timezones. Languages: English (C2), Portuguese (Native).

With nearly 20 years of experience on IT I have been exposed to multiple roles, from Backend Developer, System Administrator up to DevOps Team Lead and Cloud Architect. If you are looking for a reliable partnership to get skilled technical guidance, technical support and services, please let's talk and discuss your use case. I hold a Master Degree in Computer Science from one of the best universities in Brazil (Santa Catarina Federal University) as well have multiple cloud certifications, specially on AWS and Azure. Currently my main focus and expertise is on cloud infrastructure, ranging from account design, billing structures up to networking implementation and CI/CD pipelines. Strong focus and experience on AWS being AWS certified Professional Architect and DevOps Engineer I hold the right skills to support you on any AWS-related project. From networking design up to serverless I can guide you on best practices and well-architected patterns. Main technologies: - AWS EC2, S3, Lambda, Config, VPC, Opswork, CloudWatch, EKS, ECS, Fargate, API Gateway, WAF, ELB, ElasticBeanstalk, Lightsail, RDS, Aurora, Glacier, Codepipeline - Kubernetes - Docker - Gitlab - Azure - Virtual Machines, VNets, Storage acounts, SQL Server - vmware 6+ - Hyper-V 2012 R2+ - Linux: Debian, Ubuntu, Fedora, CentOS, Alpine - FreeBSD - Networking