I'm a Senior Android Developer with 14+ years of professional experience building high-quality native Android applications used by millions of users. I specialize in Kotlin, Java, Jetpack Compose, Android SDK, modern Android architecture, and delivering reliable, scalable mobile solutions from concept to production. I currently work as a Senior Android Engineer at CHECK24, one of Germany's leading technology companies, where I develop and maintain large-scale production applications. My work includes feature development, architecture design, performance optimization, code reviews, and solving complex technical challenges while maintaining clean, scalable, and maintainable code. I have extensive experience building: ✔ Native Android applications (Kotlin & Java) ✔ Jetpack Compose & Material Design ✔ MVVM & Clean Architecture ✔ REST APIs & Backend Integration ✔ Firebase Services ✔ Room, SQLite & Offline-First Applications ✔ QR Code, Barcode & Scanner Integration ✔ Bluetooth & BLE Communication ✔ AI-powered Android Applications ✔ Performance Optimization & Memory Management ✔ Code Review & Refactoring ✔ Google Play Publishing ✔ Legacy Java Modernization ✔ Long-term Maintenance & Feature Development Beyond development, I also have strong experience designing clean, intuitive UI/UX with a focus on usability, accessibility, and smooth user experiences. Why work with me? • 14+ years of professional Android development experience • Enterprise experience in Germany at CHECK24 • Applications used by millions of users • Strong architecture and problem-solving skills • Clean, maintainable, and scalable code • Reliable communication and on-time delivery • Long-term support and continuous improvement Whether you need a new Android application, a complex feature, architecture improvements, performance optimization, bug fixing, or long-term development support, I'm ready to help. Let's build a great Android app together.

I build production-scale data platforms, machine learning systems, and distributed cloud infrastructure — taking ideas from architecture to live, revenue-generating products. With 8+ years across data engineering, ML platform development, and GitOps-driven platform engineering, I've delivered end-to-end solutions for startups, scale-ups, and enterprise clients. Recent Outcomes Architected multi-AZ Kafka + Spark + AWS Glue + Apache Iceberg data platform serving 10+ operational domains Reduced AWS infrastructure costs by 50% through adaptive query batching, S3 lifecycle tiering, and VPC endpoint routing Cut daily ad spend by 78% via automated Facebook and Google Ads API orchestration driven by real-time session data Built SageMaker Pipelines with dataset versioning, experiment tracking, model lineage, and automated retraining Replaced legacy EC2/SQS batch systems with event-driven streaming, reducing processing latency by 70% Delivered iOS apps (Swift) with serverless backends on Lambda, Aurora, DynamoDB, and Shopify-integrated checkout Built platform-wide observability using Prometheus, Grafana, Loki, and Tempo with SLO/SLI frameworks across pipelines, ML workflows, and APIs Machine Learning & AI SageMaker, SageMaker Pipelines, SageMaker Feature Store, feature engineering, dataset versioning, experiment tracking, model lineage, real-time inference, batch transform, continuous evaluation, automated retraining, supervised learning, time-series forecasting, ranking and recommendation systems, anomaly detection, TensorFlow, PyTorch, Scikit-learn, deep learning, reinforcement learning, NLP, computer vision. Big Data & Streaming Apache Kafka (MSK), Apache Spark, Apache Flink, Apache Iceberg, AWS Glue, Apache Hadoop, data lakehouse, schema evolution, time-travel queries, Parquet, stateful stream processing, exactly-once semantics, watermarking, backfill pipelines, real-time data pipelines, data warehouse design. Cloud & Serverless AWS, Microsoft Azure, Lambda, S3, DynamoDB, Aurora/RDS, API Gateway, Cognito, EventBridge, SNS, SQS, event-driven architectures, serverless systems, multi-AZ deployments, cost-optimized cloud architectures, VPC design. DevOps, GitOps & Platform Engineering Kubernetes (EKS/ECS), Docker, ArgoCD, Flux, Helm, Kustomize, Terraform, CloudFormation, GitHub Actions, CodeBuild, CodePipeline, canary deployments, blue-green deployments, progressive delivery, self-healing infrastructure, internal developer platforms (IDP). Observability & SRE Prometheus, Grafana, Loki, Tempo, PromQL, ELK stack, CloudWatch, SLOs, SLIs, error budgets, distributed tracing, alerting pipelines, incident response. Application & API Development iOS (Swift/Objective-C), Android (Kotlin/Java), React, Angular, REST, GraphQL, Shopify Platform, React Native, full-stack cloud applications. Languages Python, Scala, Java, Swift, Kotlin, JavaScript, TypeScript, SQL, C++. Certifications AWS Certified Solutions Architect – Professional AWS Certified Machine Learning – Specialty Microsoft Certified: Azure Solutions Architect Expert Google Cloud Certified - Professional Cloud DevOps Engineer CKA: Certified Kubernetes Administrator If you have a data platform to build, an ML system to productionise, or a cloud architecture that needs to scale — I can design and deliver it end to end.

I build complete Minimum Viable Products (MVPs) and AI-powered SaaS applications from concept to launch, fast, scalable, and visually stunning. My focus is on helping startups, founders, and businesses turn ideas into fully functional, investor-ready products that users love. I handle the entire development lifecycle — from UX design, database setup, and backend logic to AI integration and deployment. ⚙️ Languages & Technologies Frontend: HTML5 CSS3 / Tailwind CSS JavaScript (ES6+) React.js Responsive & animated UI design Backend & Logic: Node.js Express.js REST APIs / Webhooks AI Integration (OpenAI, GPT-based systems, Hugging Face, etc.) Authentication systems (JWT, OAuth2, Email sign-in) File handling & uploads Database: PostgreSQL MySQL MongoDB Supabase / Firebase Cloud & Integrations: AWS / DigitalOcean / Render / Vercel Stripe (subscriptions, checkout, payments) Google APIs (Maps, Auth, Analytics) Brevo / SendGrid (email automations) Discord / Slack integrations 🚀 What I Can Build for You ✅ SaaS MVPs (Software-as-a-Service platforms) ✅ AI chatbots and assistants ✅ Business dashboards (HR, CRM, Analytics) ✅ Resume builders, pitch deck generators, AI tools ✅ Healthcare & self-care portals ✅ Gamified storytelling & interactive web games ✅ Fundraising and investor tools ✅ Landing pages with high-end design and motion 💡 My MVP Process Idea validation & feature breakdown UI/UX prototype and architecture Full-stack app development AI + automation integration Testing, feedback & optimization Launch on your domain with analytics & SEO 🧩 Why Hire Me I deliver investor-ready MVPs fast — perfect for testing, pitching, or scaling. I can handle both frontend and backend, including AI logic. I focus on user experience, scalability, and design consistency. I understand startup workflows — from prototype to funding stage.

Hello, Clients! Please go on my website SoftwareAssemblies.com. You will find everything you need to hire us.

More than 8+ years of experience in software development. The main focus is on cross-platform mobile games and application development. The main technologies are Xamarin and Unity3D using C# and Flutter (Dart). However, I have also experience with native mobile development with Java and Swift. Other technologies that I worked with: - Speech recognition services; - Mobile accessories, such as heart-rate trackers; - Virtual/Augmented Reality.

Senior Software Engineer with 25 years of experience driving digital transformation for global businesses. Expert in backend, frontend, and mobile development, with a track record of leading high-impact projects that have improved scalability, user engagement, and revenue. Proven leader in remote-first environments, delivering complex solutions across industries such as healthcare, logistics, and e-commerce. Fluent in English and Spanish, with expertise in Agile methodologies and emerging technologies. CORE COMPETENCIES - Cultivated a ‘Remote-first’ culture, ensuring high-quality deliveries and operational excellence based on excellent team communication and using collaborative tools and Agile methodologies. - Backend Architecture and Development: JavaScript, Node.js, PHP, MySQL, SQL Server, PostgreSQL and SQLite. - Frontend Development: HTML5, CSS3, Vue.js, React, Bootstrap and Tailwind. - Mobile Development: iOS/Android platforms, Titanium SDK, React Native, Objective-C, Java, Kotlin, Swift, Swift UI. - E-commerce Development: Shopify (Liquid, Remix, Polaris), WooCommerce (PHP). - Cloud Architecture: AWS, GCP, VPS, Fly.io, Docker. -Successfully managed and delivered large-scale, complex projects, including ERP platforms migrations, vehicle fleet logistics and management systems, and healthcare industry systems positively impacting millions of users. - Payment Systems: PayPal, Stripe, Sage Pay, Apple Pay, Google Pay, WooCommerce payment gateways. - Protocols & Standards: HL7, FHIR, HIPAA, Rest APIs, GraphQL PROFESSIONAL EXPERIENCE Senior Software Architect & Developer 01/2013 – Present Inzori | Uruguay & Spain (Remote) - Co-founded a remote-first company specializing in mobile app development and web systems architecture, achieving 4M+ app downloads and a 4.8-star rating across platforms. - Delivered ERP systems, payment gateways, and custom e-commerce plugins for clients in logistics, healthcare, and retail. - Increased app revenue by 25% in one year and boosted online store revenue by 70% through innovative payment gateway integrations. - Developed in-house apps and tools that improved user engagement, client satisfaction, and operational efficiency. - Enhanced user acquisition and retention by creating a unique virtual currency feature in a Shopify store, encouraging customers to earn and spend store-exclusive currency. ………………………………….…………………………………….………………………………….…… Senior Software Architect & Developer 01/2020 - Present Fluid Truck | Denver, CO, USA (Remote) - Led mobile application development for iOS and Android, collaborating with cross-functional teams and reporting directly to the CTO. - Delivered weekly app updates, achieving a 4.9-star rating on Apple and Google Play Stores. - Designed and implemented new features that increased mobile app revenue by 25%. - Collaborated with product and QA teams to optimize UX/UI based on user feedback, driving significant user engagement improvements. ………………………………….…………………………………….………………………………….…… Senior Software Architect & Developer 01/2016 – 01/2020 Anexinet Corp. | Blue Bell, PA, USA (Remote) - Designed and developed backend and mobile solutions for clients in finance and healthcare, including De Lage Landen (DLL) and Canopy Health. - Spearheaded a COVID-era virtual doctor’s office feature for Canopy Health, integrating with HL7 protocols and Okta for secure authentication. - Delivered four mobile apps for DLL, tailored to industry-specific needs, enhancing operational efficiency across 25+ countries. - Led a system migration from Glassfish/SOAP to Node.js/JSON, improving scalability and reducing maintenance costs. ………………………………….…………………………………….………………………………….…… Senior Software Architect & Developer 07/2017 – 08/2018 Ember technologies Ltd. | Glenrothes, Scotland (Remote) - Directed iOS/Android mobile app development for high-profile clients, including HSBC, Grant Thornton, British Cycling, and the NHS. - Delivered robust, scalable mobile solutions tailored to client-specific requirements, ensuring seamless integration and functionality. ………………………………….…………………………………….………………………………….…… Senior Software Architect & Developer 01/2015 – 12/2015 Payment Data Systems (Usio) | San Antonio, TX, USA (Remote) - Designed and developed a mobile payment application integrated with Stripe, Apple Pay, and Google Pay to allow users to create virtual credit cards and categorize them to truck different budgets. - Streamlined payment processing with virtual POS systems and customizable payment platforms. ………………………………….………………………… Senior Software Architect & Developer 06/2006 –10/2012 Accendo-IT | Montevideo, Uruguay - Delivered a modular web-based software suite that streamlined supply chain operations. - Designed ERP solutions optimizing logistics for 1-800 Radiator, supporting over 250 franchises - Managed end-to-end project delivery, overseeing client communication, development, deployment, and ongoing support to ensure timely completion and high client satisfaction.

I build custom ERP, CRM and SaaS platforms for companies whose operations have outgrown off-the-shelf software. One I built runs 80,000+ profiles in production. Another replaced Excel for a 60-person firm running hundreds of campaigns a month. What I do is replace that with one system built around your actual process. Custom ERP and CRM platforms, multi-tenant SaaS products, internal tools and back office systems, legacy migrations, API integrations between software that does not natively connect, business process automation for the steps your team still does by hand, and reporting dashboards that pull real numbers without anyone exporting anything. I build in Laravel, PHP, Node.js, React, TypeScript and PostgreSQL, and I handle architecture, backend, frontend, database design and deployment myself. You deal with one person, start to finish. Some of what that has looked like. The platform running one of Italy's leading event companies, now holding 80,000+ registered professional profiles and coordinating staff across events nationwide. A custom ERP that took a 60-person recruitment firm off Excel and onto a single system managing hundreds of campaigns a month. An enterprise assessment platform used for hiring and university admissions. A multi-tenant SaaS registration system integrating Italian SPID and CIE identity verification. I also handle AI integration where it removes manual work rather than adding novelty: document processing, classification, and the review steps that currently need a person reading every record. Nearly twenty years of building this kind of software means I can usually tell you where a project will break before you commit to it. Send me what your process has to do and I will tell you how I would build it, at no cost and no obligation. If you would rather test the working relationship first, I offer a fixed-scope architecture and code audit of what you already have. Most of this work turns into a long-term development partnership, and that is the outcome I build toward.

I have vast experience in low level programming, source code auditing and web server troubleshooting for a wide range of server systems and client language and frameworks. Some of my experience includes : 10 years in the ISP market managing linux web servers, developing custom solutions and troubleshooting complex issues regarding our custom stacks and client needs as well as extreme server failure recovery. 5 years in information security doing vulnerability research, training, penetration testing and source code auditing. 5+ years as a freelance developer that include low level linux and windows projects, custom web servers, centralized proxy servers and DRM systems.

I am an experienced mobile app developer with expertise in React Native and native iOS and Android development. In my spare time, I’m learning Flutter development with Dart to further expand my cross-platform offerings. I earned my Master's degree in Computer Science at DePaul University, graduating in 2023. My 5 years of professional experience and education has given me a strong foundation in software engineering principles, algorithms, and data structures that I apply to my work as a mobile app developer. My React Native experience allows me to develop cross-platform applications that work seamlessly on both iOS and Android platforms, ensuring a consistent user experience. I am proficient in using Redux and Context for state management, integrating third-party libraries and APIs, as well as integrating with various cloud computing infrastructures. I also have experience implementing Realm for device storage in React Native, which allows for faster data retrieval and tolerance for network connectivity issues. From schoolwork, I have some experience in developing native iOS applications using Swift and native Android applications using Java. I have a deep understanding of the iOS and Android development ecosystems, including the use of native APIs and frameworks. I am comfortable using Xcode and Android Studio for development. I have a strong problem-solving ability and am comfortable working in agile environments. I have a proven track record of delivering projects on time and under budget. I am passionate about staying up-to-date with the latest mobile technologies and trends, and continuously seek opportunities to improve my skills and knowledge. Overall, I believe that my combination of React Native and native iOS and Android development experience, technical proficiency, and commitment to excellence make me an ideal candidate for your mobile app project.

I'm a developer with experience in building android/iOS applications and website for small and medium sized businesses. I'm experienced in HTML and CSS, WordPress and java. Moreover am skillful in business analysis, budget drafting and analysis and project drafting, planning and designing. I can show and direct both big and small business in the right way to increase their profits. I also advise on the best way to market once business. Regular communication is really important to me, so lets keep in touch!