Kotlin Multiplatform (KMP) Developer helping companies build and scale Android & iOS apps with a single, maintainable codebase. With 10+ years of professional experience, I work on business-critical mobile applications where stability, performance, and long-term maintainability matter. I use Kotlin Multiplatform to share core business logic across platforms while keeping fully native UI and performance on Android and iOS. What I bring to your project • Kotlin Multiplatform (KMP): shared business logic, reduced costs, faster delivery • Native Android expertise: Kotlin, Jetpack Compose, modern Android stack • Scalable architectures: Clean Architecture, MVI, MVVM Selected experience: • Eurosport & Bleacher Report — Improved stability and UI quality on large-scale apps used by millions • SNCF Connect (OUI.sncf) — Led architecture and development of the TER sales funnel SDK • BNP Paribas & TAG Heuer — Delivered high-end Android applications with strong architectural foundations Education • MSc in Computer Science — University of Kent (UK) • Master’s Degree in Software Engineering — Epitech (France) Tech stack • Kotlin, Kotlin Multiplatform (KMP), Compose Multiplatform (CMP) or native iOS UI, Jetpack Compose, Coroutines, Flow, Clean Architecture, MVI/MVVM, Ktor/GraphQL/Retrofit, CI/CD, Unit Testing (JUnit, MockK) If you are looking for a senior, autonomous developer who integrates easily into existing teams and delivers business-ready mobile apps, I’d be happy to discuss your project.

I am a passionate and creative Full Stack Developer specializing in MERN and Python Django, with a foundational knowledge of mobile development (iOS, Swift). I thrive on challenges and enjoy problem-solving, which drives my commitment to delivering high-quality solutions. My previous customer service experience has honed my communication skills, enabling me to maintain composure and clarity even in stressful situations. I am dedicated to helping others and fostering a collaborative community in every project I undertake. I excel in stimulating environments that require creativity, adaptability, and logical thinking, while also being welcoming and inclusive. Whether it’s building dynamic web applications or delving into mobile development, I approach each task with enthusiasm and a focus on excellence.

I'm a versatile technologist and creative problem-solver with a unique blend of expertise spanning multiple industries. With hands-on experience in both the entertainment and medical sectors, I bring a rare cross-functional perspective to every project. As a software developer and designer, I specialize in building intuitive, user-centered digital experiences—from full-stack web applications to sophisticated automation systems. My ability to navigate complex technical challenges while maintaining a sharp eye for design sets me apart. What I'm most proud of is my adaptability. Having worked across diverse departments and industries, I understand how to translate business needs into elegant technical solutions. Whether it's crafting a seamless user interface, architecting a robust backend system, or bridging the gap between creative vision and technical execution, I deliver results that exceed expectations. What I bring to the table: - Full-Stack Web Development (React, Next.js, TypeScript) - UI/UX Design & Product Strategy - Database Architecture & API Development - Entertainment Industry Technology - Healthcare & Medical Systems - Project Management & Cross-Functional Collaboration I'm passionate about building technology that makes a real impact—and I'm ready to bring that passion to your next project.

I am a Software Engineer and Technology Consultant with experience designing, developing, and deploying scalable software solutions for enterprises, startups, and public sector organizations. My expertise spans mobile application development, full-stack software engineering, DevOps, cloud technologies, and digital transformation. Throughout my career, I have worked with leading organizations, including SAP Germany, Liquid Intelligent Technologies Zimbabwe, and Green Enterprise Solutions, where I developed secure, high-performance applications and optimized software delivery processes. As Co-Founder of Zim Logic, I help build innovative digital solutions that empower African governments and businesses through modern technology. Core Skills: Full-Stack Software Development iOS & Mobile App Development DevOps & CI/CD Cloud Infrastructure API Development & Integration System Architecture Agile Project Delivery Software Testing & Quality Assurance I am passionate about delivering reliable, scalable, and user-focused solutions that solve real business challenges and create measurable impact.

Supabase and PostgreSQL backends for businesses that run on them. Row level security, migrations, approval chains, audit trails. Shopify Liquid and B2B ordering. Email infrastructure that reaches the inbox. WHAT I BUILD • Supabase and Postgres backends. Schema design, 116 migrations on one live system, row level security tight enough that one role cannot see another's costs • Internal operations software. Quotations with a multi-step approval chain, invoicing, a stock ledger over 738 migrated raw materials, purchase approvals, HR attendance • Shopify. 3 storefronts, 212 Liquid templates, a B2B ordering page with a working cart, 109 products migrated, SEO and performance work • B2B marketplace, end to end. RFQ to quote to order, 616 source files, 5 edge functions covering web push, notification delivery and event logging • Telephony. An on-premise Grandstream UCM PBX bridged over a permanent named Cloudflare tunnel, so staff dial from the record they are looking at and every call logs against it, with no public port exposed • Email infrastructure. SPF, DKIM and DMARC across 5 sending domains, warm-up, verified lists, suppression and scheduling THE FAILURES I HAVE ACTUALLY FIXED Stack lists are cheap. These are not. • A domain-wide "550 5.7.1 email spoofing detected" rejection, caused by a DMARC record left behind by a decommissioned ESP sitting alongside live DKIM keys for three separate tools, none of them the real sender • Microsoft Defender Safe Links detonating single-use login links from an Azure range before any human clicked. Microsoft 365 only, invisible on Gmail. Fixed by consuming the token on a POST rather than a state-changing GET, which scanners do not follow • Gmail rewriting the From address on mail that had already gone out, because a Workspace alias is not a verified send-as • A DMARC ramp from none to quarantine that filtered forgeries without breaking one legitimate stream HOW I WORK I write the tooling rather than configuring someone else's. The DNS audit tool I run on every engagement checks SPF including the 10-lookup limit counted through nested includes, DKIM across 40+ selectors including stale keys, DMARC policy and alignment, MX, MTA-STS and TLS. Scored out of 100, every finding ranked, with the exact fix. The source is public on the GitHub account linked to this profile. Run it against your domain before you hire me. Fixed price with defined milestones is what I prefer. I name timelines before money changes hands, including the ones you will not like: mailbox warm-up takes two to three weeks and cannot be shortened. Dubai, working US hours. English and Arabic. FIRST STEP Send me your Supabase project, your Shopify theme or your sending domain, and the one thing that is broken. I will tell you what I think is wrong and what I would fix first, before you hire anyone.

Social Media Management Bio I can get content for your Social Media Pages and post anywhere from 1 to 5 posts per day. In the past I have noticed posting content on pages will engage customers or potential customers. I can work on a month to month basis or less. Web/Mobile Editor Bio Throughout my years in College going for Software Development, I picked up so skills. I've worked on my own website as well as other companies who needed to hire a new web developer. I've turned websites into a more responsive or mobile friendly pages. I can work on mostly any websites including Joomla, Wordpress, and more. Please keep in mind I can only edit the cosmetics of the websites. This is wording, the page design such as background colors, adding social media links, and more. Music Bio I have over 15 years of producing beats, rapping, and singing. The genre's I can work with is Hip Hop, Pop, and R&B. I've done countless music such as short films, a web series, a mobile app advertisement campaign and more. I've caught the attention of MTV supervisor Jen Schwartz out of New York back in 2009. Missy Elliot follows me on twitter @kayskeem after hearing one of my beats and I've done a song with the rapper Mims we're fb friends. Although I sing and rap I do not write anything but it will seem as if I wrote it. I've designed music websites (Beat Website) just to show my talent in beat making and helped design a music streaming website & app on android (ios is under maintenance) just to show my work as an artist. I've also produced music for my small business commercials. I can send links of all my work upon hire.

ABOUT ME I'm a full time freelance software developer and consultant, highly experienced in designing, developing and managing web, mobile and desktop applications of all sizes. I've been developing software commercially since 1998, and a hobby programmer since my childhood. I currently own and operate Brava Software Solutions, a software consulting and development agency currently based in Alicante, Spain. Previous clients and work experience include Quill Meetings, DHL, Securicor Omega Express, Capscan, Monsternett AS, The Restaurant Zone LLC, Sunfly, Dooster, Claims4Free and more. I'm a native English speaker, originally from London. WHY SHOULD YOU HIRE ME? Let's be honest .. you've probably seen my bid and thought, "Wow, that's a little higher than some of the others, what makes this guy worth it?" Well .. hire me and I'm sure you'll very quickly see why. Not only do you get a highly motivated and passionate software developer with decades of experience focused on your project, depending on your needs, you can also access to the highly talented team of engineers and dedicated project manager that my agency can provide. No middle men or answering services, you get to talk directly to the people working on your code. I also strive to offer a flexibility towards my clients needs that is hard to find in this industry and will happily adapt working hours to suit your needs, whether you need just a few hours every now and then, or a huge dedicated burst to meet a deadline, you'll find you can count on me to deliver. Not only do I pride myself on producing clean, robust test-driven and fully linted code, but because it's second nature to me I can also do this fast and efficiently. I'm confident that you'll not only receive outstanding results, but as my many repeat clients will agree, you'll end up getting far more value than the cheaper competitors. I'm also very picky about the projects I choose to bid on, only pursuing ones that I feel will be truly engaging over the long term. By approaching work this way, you'll find that I throw myself into my work like nobody else. You'll find that you'll get not just a developer, but an individual who's genuinely passionate about what he does and someone you can rely on to handle every technical aspect of your project from start to finish and beyond if needed. EXPERIENCE AND QUALIFICATIONS I am widely experienced in several areas of software development having undertaken a large range of jobs over the years from traditional desktop applications to modern cloud and mobile based technologies. My speciality areas include: - Business optimisation and integration through carefully designed bespoke software. - Desktop application development with C++ - Back end web and application development with Python / Django / Flask. - LLM / AI integration and customisation. - Front end web and single page development with Javascript and Typescript (inc JQuery, Angular, Bootstrap). - Web development, administration and automation with PHP (inc Wordpress). - Mobile application development with Java, C and Python. - Cross platform desktop application development including Windows, Mac, Linux and Android using C++, Javascript and Electron. - Unity 3D / C# / Godot / Unreal engine game development. Other key skills include the following: - Test driven development - Code profiling and optimization (particularly for high traffic sites) - Docker & Vagrant - Amazon Web Services - Bootstrap - SQL, Database design deployment and scaling (including MySQL, PostgreSQL, and NoSQL solutions such as Apache Cassandra) - Multimedia Processing & Delivery (inc working with Flash Media Server, Wowza and WMS, as well as developing custom media processing and playback solutions in C++) I am a strong supporter of open source technologies and use Linux as my primary work platform. In addition to Linux, I also have significant development experience on Windows and many Windows specific toolchains such as Visual Studio as well as moderate experience with both desktop and mobile application development on Mac OS. I am happy to consider projects of all shapes and sizes, and pride myself on offering a fast, friendly and reliable service, and am always happy to push the extra mile for you. Programming has been my passion from an early age and I take great pride in the work I provide, always aiming to perceive the long term goals of any project and avoiding shortcuts in order to build the best product possible. Up to date references and examples of my recent work are available upon request.

I am a Senior Mobile & Full-Stack Developer experienced in building websites and mobile applications for startups, small, and medium-sized businesses. I have launched multiple MVPs to the market, so I understand how to turn an idea into a real product quickly. I focus on clean architecture, modern UI/UX, and delivering fast, high-quality results. Whether you need a business website, a custom web platform, or a cross-platform mobile app for iOS and Android, I can help you bring your vision to life.

Eighteen years of software engineering, twelve of them shipping games. Five commercial titles across PC, console and mobile, including You Suck at Parking, Cannibal Cuisine and Modulus. I get hired for the parts of a project that are hard to get right. MULTIPLAYER AND NETCODE Three shipped multiplayer titles on Photon (Bolt, Quantum, PUN). Authority handling, state replication, prediction and lag compensation, and the design compromises that make an online game feel fair. I have also retrofitted online co-op into a game that was never built for it, which is its own kind of education. CONSOLE PORTING AND PLATFORM WORK PlayStation, Xbox and Switch, certification included. Steamworks, Azure PlayFab, platform SDKs, and the store and account services around them. BACKEND AND DEVOPS Eighteen years of C#/.NET microservices in banking, logistics and HR, plus live-game backends and the whole delivery chain: self-hosted GitLab CE and Gitea, containerised build agents, CI/CD for Unity, Proxmox and Docker. AI INFRASTRUCTURE AND TOOLING I run production LLM inference on my own GPU nodes: llama.cpp built from source with custom CUDA binaries, quantization tuned per model, served behind LiteLLM over OpenAI-compatible APIs. I also built Welkin, an orchestration layer for multi-agent AI coding teams. If you need self-hosted inference, model serving, or AI wired into an existing product, that is daily work for me rather than a side interest. I am most useful on projects where the brief is "this is broken and nobody knows why" or "we need this running on a platform it was never designed for". I write code meant to be read by whoever comes next, and I would rather tell you something takes three weeks than promise one. Gameplay system, port, backend, build pipeline or AI integration: I bring engineering discipline to indie ambition.

I am a certified full-stack web developer who is excellent at creating cutting-edge, user-friendly, beautiful responsive websites from scratch. I am excited to start freelancing at Upwork and offer my clients high-quality work. My Expertise ✓ iOS: Swift 4.x, Swift 5.x, SwiftUI, RxSwift, RxCocoa, CocoaPods Touch ✓ Android: Java, Kotlin, ReactiveX, RxKotlin, RxJava, Gradle, Dagger2 ✓ Cross-platform: React Native, Flutter ✓ JSON, JWT, XML, MVC, MVVM, Restful API, GraphQL ✓ Multitasking, Analytics, Monitoring, Gyroscope, GPS, High-end processor, Accessibility, Bluetooth, Camera ✓ Backend platform: PHP, Python, node.js, express.js, Laravel, Django, Ruby on Rails ✓ Third-Party API: Social Media API, Firebase, Payment Gateway, Geolocation, Twilio, SendGrid, Mailchimp, etc. ✓ Database: MySQL, PostgreSQL, MongoDB, etc ✓ AWS (EC2, S3, DynamoDB, Amplify, AppSync, Lambda, RDS, Cognito, etc), DigitalOcean, Heroku, Azure, WSL, Docker, Elastic Search, Rabbitmq, etc ------------------------------------------------------- ✓ Shopify, Shopify Plus, BigCommerce ✓ WordPress, WooCommerce ✓ Wix(Velo), Squarespace, Webflow, Joomla ✓ HubSpot, Salesforce CRM, Zapier ✓ Drupal 7,8,9 ✓ UI/UX, Graphic Design ✓ SEO (On-Page/ Off-Page SEO, Leads generation, Google Ads, Keyword research,..) ✓ API integration, Payment integration ✓ Web Hosting Servers - AWS, Godaddy, BlueHost, Cpanel, Heroku, DigitalOcean ------------------------------------------------------- ✓ PHP, Laravel, Magento 1,2, Cake PHP ✓ Node, Express, Ruby, Python ✓ React, Redux, Hooks, Next.js, Vue, Vuex, Vuetify, Material-UI, JavaScript, TypeScript ✓ HTML5, CSS3, Bootstrap, Tailwind CSS, SCSS, SASS, LESS, Ajax, jQuery ✓ MySQL, PostgreSQL, MongoDB ✓ Github, Bitbucket