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Arthur K.
$150/hr
100% Job Success
Available now
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Top 0.01% nationally; 2nd in Canada, repeated top-20 finishes in programming, mathematics, and physics competitions. $1M+ earned, 100% Job Success, 7,600+ hours, average engagement 330+ hours. I build production AI inside real products, especially Rails/Python systems that need more than a demo. โ€ข Multi-LLM failover across Claude / GPT / Grok - 99.9% uptime, zero dropped requests โ€ข PGVector RAG 5-10x faster than hosted APIs, embedded in Active Record โ€ข AI contract parser shipped in 3 weeks with OCR fallback and source-document backlinks โ€ข 1M-row pipeline cut from 90 minutes to 30 seconds for an industrial dashboard where downtime costs millions 25 years shipping software: Rails 15 years, Python 8 years, Node, .NET, PostgreSQL/vector search, F#, Clojure, Scala, C/C++, scraping, and data pipelines. Former CTO: grew a company 12x from $20K/mo to $250K/mo, hired engineers, set direction, and still wrote the hard code. Send me the product, the stack, and what the AI needs to do. I respond fast and only take projects with a clear path to value.
KULVINDER S.
$20/hr
99% Job Success
$60K+ earned
Available now
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๐Ÿš€ Selected as one of the Top Rated Plus Designer/Developers by Upwork ๐Ÿš€ ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ๐ŸŒŸ 10+ Years of Web Design & Development Excellence Over the last 10 years of experience crafting websites that are not only visually stunning but also high-performing, SEO-friendly, and business-driven. From startups to established brands, I help clients turn their vision into a polished, scalable online presence. ๐Ÿ”น Full-Stack Expertise โ€“ From idea to deployment, I handle the complete website lifecycle. ๐Ÿ”น Pixel-Perfect Design โ€“ Modern, responsive, W3C-compliant websites that work flawlessly across devices. ๐Ÿ”น Business-Oriented Approach โ€“ Every project is built to drive sales, engagement, and growth. I am specialized in the below sections... ๐Ÿ’Ž Website Builders & CMS Platforms | Frameworks - WordPress, Shopify, Squarespace, Wix, Webflow, Weebly, Hubspot, OpenCart, PrestaShop, Magento, Drupal, GoDaddy, Google Sites, Joomla, Kajabi, Sitebuilder, Codeigniter, Laravel, Yii, Cakephp, Zend ๐Ÿ’Ž Databases - SQLite, Realm Database, MongoDB, MySQL, PostgreSQL, Oracle Database, Firebase Realtime Database ๐Ÿ’Ž Web Design Deliverables - Prototyping, Mockup, Style Guide, User Flow, Landing Page, Website, Website Redesign, Mobile App Redesign, Email Design, High Fidelity Design, Icon Design, Research Documentation, Sketching, Web Component Design, Wireframing ๐Ÿ’Ž UX/UI Design Software - Adobe Illustrator, Adobe XD, Adobe Photoshop, Balsamiq, Figma, Sketch, InVision ๐Ÿ’Ž Front-End Development Skills - Adobe Photoshop, Google Analytics, .NET Framework, Angular, AngularJS, Bootstrap, Git, jQuery, React, Vue.js, WordPress, Node.js, SaaS, AJAX, AWS Amplify, Backbone.js, Bitbucket, BootstrapVue, Docker, Kubernetes, Next.js ๐Ÿ’Ž Ecommerce Platforms - Magento, Squarespace, Wix, WordPress, Shopify, WooCommerce, BigCommerce, Elementor, Weebly ๐Ÿ’Ž SEO Services - On-Page SEO, Off-Page SEO, Technical SEO, Content SEO, Competitive Analysis, SEO Audit, SEO Keyword Research, SEO Performance, SEO Setup & Configuration, SEO Strategy, Link Wheel, Local SEO, SEO, SEO Backlinking, SEO Writing, Shopify SEO ๐Ÿ’Ž WordPress Plugins - WooCommerce, Akismet, All in One SEO Pack, Amazon Plugin, AWeber, BuddyPress, Clickbank WordPress Plugin, Contact Form 7, Divi, Elementor, Facebook Plugin, Genesis Framework, GetResponse Plugin, Google AdSense Plugin, Gravity Forms, Instagram Plugin, LearnDash, LinkedIn Plugin, Mailchimp Plugin, PayPal Plugin, Slider Revolution, Thrive Themes, Twitter Plugin, Vimeo, Inc, W3 Total Cache, WP Rocket, WPLMS, Yoast SEO, YouTube Plugin ๐Ÿ’ŽPayment Systems - PayPal, Stripe, Braintree, WePay, Worldpay, 2Checkout, Opayo, Payoneer ๐Ÿ’ŽBack-End Development Deliverables: API, Database, Database Architecture, Database Design, Database Maintenance, Software Architecture & Design, Web Service, Business Logic Layer, Data Access Layer, RESTful API, Automated Deployment Pipeline, Back-End Development, Infrastructure as Code, PHP Script, Python Script, Requirements Specification ๐Ÿ’ŽBack-End Programming Languages: Java, Kotlin, Scala, PHP, Ruby, SQL, TypeScript, Python, C#, C++, Elixir, Apache Groovy, ASP, Clojure, D Language, Dart, Delphi, Erlang, F#, Fluid Hyper Text Markup Language, Golang, GraphQL, Haxe, JADE, Objective-J, Perl, Rust, Transact-SQL, Visual Basic, XQuery, Laravel ๐Ÿš€ What You Can Expect from Me โœ… Fast-loading, secure, and mobile-responsive websites โœ… Clean, maintainable code with future scalability in mind โœ… SEO optimization from day one โœ… Transparent communication and on-time delivery ๐Ÿ“ฉ Letโ€™s Build Something Extraordinary Whether you need a brand-new website, a redesign, or complex backend development, Iโ€™m here to deliver solutions that make a difference. Letโ€™s discuss your project and bring your vision to life. Best Regards, Kulvinder ๐Ÿงฉ Keywords: WordPress | WordPress Designer | WooCommerce Store Optimization | Elementor Expert | WordPress Backup | Web Design | WordPress Development | WordPress Multisite | WooCommerce Store Setup | WordPress Custom Theme | WordPress Installation | WordPress Woocommerce | WordPress Customization | WooCommerce Store Customization | WordPress Theme Customization | WordPress Bug Fix | PSD to WordPress | WordPress Security | WordPress Plugin Development | WooCommerce Store | Figma to WordPress | Elementor Pro | WordPress Theme | WordPress Ecommerce | Divi | Frontend Developer | WordPress Migration | WooCommerce Store Redesign | Website Design | WordPress Expert | WordPress Thrive Theme | WordPress Website Optimization | WordPress Plugin | WordPress Landing Page | XD to WordPress | WordPress Website | Website Designer | WordPress Elementor Expert | Elementor | WordPress Optimization | WordPress Plugin Customization | ACF Pro | ACF | ACF Field Group | ACF Option page
๐—ญ๐—ผ๐—ฝ๐˜๐—ฎ๐—นยฎ Expert-Vetted Talent๐Ÿ…
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๐—ญ๐—ผ๐—ฝ๐˜๐—ฎ๐—นยฎ Expert-Vetted Talent๐Ÿ…
$1M+
earned
Andrew V.
$60/hr
100% Job Success
$30K+ earned
Available now
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AI/ML Engineer & Full Stack Developer | Python โ€ข PyTorch โ€ข Agentic ai โ€ข React โ€ข TypeScript I build machine learning systems and full-stack web applications. AI/ML: Reinforcement learning (actor-critic, PPO, genetic algorithms), deep learning (TCN, LSTM, MLP), LLM integration and automation, model training and evaluation in PyTorch and TensorFlow. Full Stack: React, Next.js, TypeScript, Python (Django/Flask/FastAPI), PHP/Laravel, Go. 4+ years production experience at TeamGantt. What I've built: - Multi-asset algorithmic trading systems using deep RL and temporal convolutional networks - Walk-forward optimization framework for systematic strategy evaluation - Go-based trading broker with REST API and real-time streaming - Production features in React/TypeScript/PHP/Clojure serving thousands of users Background: Controls engineering + Virginia Tech AI & Machine Learning program (completing 2026). I deliver fast, communicate clearly, and write tested code.
Priyanka T.
$20/hr
99% Job Success
$40K+ earned
Available now
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๐ŸŒ๐—ช๐—ฒ๐—ฏ๐˜€๐—ถ๐˜๐—ฒ ๐——๐—ฒ๐˜€๐—ถ๐—ด๐—ป๐—ฒ๐—ฟ | ๐— ๐—ผ๐—ฏ๐—ถ๐—น๐—ฒ ๐—”๐—ฝ๐—ฝ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ | ๐—”๐—œ ๐—ฆ๐—ผ๐—น๐˜‚๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜ | ๐—ช๐—ผ๐—ฟ๐—ฑ๐—ฃ๐—ฟ๐—ฒ๐˜€๐˜€ | ๐—ฆ๐—ต๐—ผ๐—ฝ๐—ถ๐—ณ๐˜† | ๐—™๐—น๐˜‚๐˜๐˜๐—ฒ๐—ฟ | ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ | ๐—ช๐—ฒ๐—ฏ๐—ณ๐—น๐—ผ๐˜„ | ๐—ช๐—ถ๐˜… | ๐—ฆ๐—พ๐˜‚๐—ฎ๐—ฟ๐—ฒ๐˜€๐—ฝ๐—ฎ๐—ฐ๐—ฒ๐ŸŒ Hello, I am an expert in website design, mobile app development, and AI-powered solutions for businesses that want a strong digital presence and scalable technology solutions. My focus is on building modern, fast, user-friendly websites and mobile applications that help companies attract customers, automate processes, and grow their business. With over 10 years of experience in web and mobile development, I have worked with startups, entrepreneurs, and established companies to create business websites, eCommerce stores, SaaS platforms, mobile apps, and AI-driven solutions. I combine creative design, clean development, and AI technology to deliver products that are visually appealing, technically reliable, and built for growth. ๐Ÿš€ What I Can Help You With โ€ข Custom Website Design & Development โ€ข WordPress Development (Elementor, Custom Themes) โ€ข Shopify Store Development & eCommerce Solutions โ€ข Website Redesign & Performance Optimization โ€ข Landing Page Design & Development โ€ข Web Applications & SaaS Platforms โ€ข Mobile App Development (iOS & Android) โ€ข Cross-Platform App Development โ€ข AI Chatbots & AI Assistants โ€ข AI-Powered Business Automation โ€ข API Development & Third-Party Integrations โ€ข CRM, ERP & Custom Business Systems Every solution I build is responsive, scalable, SEO-friendly, and optimized for performance. ๐Ÿ“ฑ Mobile App Development โ€ข Flutter Development โ€ข React Native Development โ€ข iOS App Development โ€ข Android App Development โ€ข On-Demand Apps โ€ข Ride-Hailing Apps โ€ข Food Delivery Apps โ€ข Healthcare Apps โ€ข Real Estate Apps โ€ข Marketplace Apps โ€ข GPS & Location-Based Applications โ€ข Subscription-Based Mobile Apps ๐Ÿค– AI & Automation Solutions โ€ข AI Chatbot Development โ€ข OpenAI / ChatGPT Integration โ€ข AI Customer Support Systems โ€ข AI Content Generation Tools โ€ข AI Workflow Automation โ€ข AI-Powered SaaS Platforms โ€ข Machine Learning Integrations โ€ข Voice AI Solutions โ€ข AI Agents & Virtual Assistants ๐Ÿ’ป Technologies & Platforms Website Platforms WordPress โ€ข Shopify โ€ข Webflow โ€ข Wix โ€ข Squarespace โ€ข Framer Frontend Development HTML5 โ€ข CSS3 โ€ข JavaScript โ€ข React โ€ข Next.js โ€ข Vue.js Backend Development PHP โ€ข Laravel โ€ข Node.js โ€ข Express.js โ€ข REST APIs Mobile Development Flutter โ€ข React Native โ€ข Swift โ€ข Kotlin AI Technologies OpenAI โ€ข ChatGPT โ€ข Claude โ€ข Gemini โ€ข AI APIs โ€ข Automation Tools Design Tools Figma โ€ข Adobe XD โ€ข UI/UX Design โ€ข Prototyping ๐ŸŽฏ Industries I Work With E-commerce โ€ข SaaS โ€ข Healthcare โ€ข Real Estate โ€ข Education โ€ข Travel & Tourism โ€ข Logistics โ€ข FinTech โ€ข Startups โ€ข Local Businesses โ€ข Marketplaces โญ Why Work With Me โœ” 10+ Years of Website & Mobile App Development Experience โœ” Modern UI/UX Design with Conversion-Focused Approach โœ” AI-Powered Business Solutions & Automation Expertise โœ” Clean, Scalable & Secure Development Practices โœ” SEO-Friendly & Performance-Optimized Solutions โœ” Clear Communication & Reliable Project Delivery โœ” Long-Term Technical Support & Maintenance My goal is to build websites, mobile apps, and AI-powered solutions that not only look great but also help businesses scale, automate operations, and achieve measurable growth. ๐Ÿ“ฉ Letโ€™s Work Together If you need a Website Designer, Mobile App Developer, AI Specialist, WordPress Developer, Shopify Expert, or Full-Stack Development Partner, feel free to send me a message and discuss your project. Best Regards, Priyanka
๐—ญ๐—ผ๐—ฝ๐˜๐—ฎ๐—นยฎ Expert-Vetted Talent๐Ÿ…
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๐—ญ๐—ผ๐—ฝ๐˜๐—ฎ๐—นยฎ Expert-Vetted Talent๐Ÿ…
$1M+
earned
Guibin Z.
$120/hr
100% Job Success
Available now
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๐Ÿš€ Ex-Meta / Yahoo | AI Full-Stack Engineer | GenAI, LLM, SaaS, APIs I build end-to-end AI products โ€” from LLM-powered features to scalable full-stack systems. With 10+ years at Meta, Yahoo, and startups, Iโ€™ve shipped production systems used by millions and designed platforms that scale reliably. I focus on delivering real, usable AI applications โ€” not just demos. โœ… What I Can Help You Build: โ€ข GenAI Applications: GPT / Claude integrations, AI copilots, workflows, prompt engineering โ€ข RAG Systems: chat over documents, knowledge bases, retrieval pipelines โ€ข Full-Stack AI Apps: frontend + backend + APIs + AI integration โ€ข AI Agents: tool-using agents, automation workflows โ€ข Backend Systems: scalable APIs, microservices, cloud architecture โ€ข AI SaaS: MVP โ†’ production-ready systems ๐Ÿ’ผ Experience Highlights: โ€ข Meta โ€” built large-scale production systems โ€ข Yahoo โ€” personalization systems serving billions of requests/day โ€ข Indeed / Workday โ€” scalable backend and cloud platforms โ€ข Tech Lead โ€” owned architecture and built systems end-to-end โ€ข Real-time systems processing TBs/day (Kafka, distributed systems) ๐Ÿ“Š What You Get: โ€ข End-to-end builder (AI + full-stack + product) โ€ข Production-ready systems, not fragile prototypes โ€ข Scalable architecture from day one โ€ข Fast execution and clear communication ๐Ÿ”ง Tech Stack: AI: GPT-4/5, Claude, RAG, AI agents, prompt engineering Frontend: React, Next.js, TypeScript Backend: Python (FastAPI, Flask), Node.js, Java, Scala, APIs, microservices Cloud: AWS (S3, Lambda), serverless architecture Infra: Docker, Kubernetes, CI/CD Data: Spark, Kafka Databases: PostgreSQL, MySQL, MongoDB, Redis ๐ŸŽฏ Typical Projects: โ€ข AI chatbot / copilot โ€ข RAG over internal/company data โ€ข AI SaaS MVP โ€ข Full-stack GenAI applications โ€ข Workflow automation with LLMs Keywords: Generative AI, GenAI, LLM, GPT-4, GPT-5, Claude, OpenAI API, Anthropic Claude, RAG, Retrieval Augmented Generation, AI Agents, Prompt Engineering, AI Automation, Chatbots, Copilots, Python, FastAPI, Flask, Full-Stack Development, Frontend Development, Backend Development, React, Next.js, TypeScript, Node.js, API Design, REST APIs, GraphQL, Microservices Architecture, SaaS Development, Multi-Tenant Systems, Authentication, OAuth, JWT, Cloud Architecture, AWS, Serverless, Docker, Kubernetes, CI/CD, Distributed Systems, System Design, PostgreSQL, MySQL, MongoDB, Redis, Machine Learning, MLOps, Data Engineering, Apache Spark, Kafka Industries: AI Platforms, SaaS, Enterprise Software, AdTech, MarTech, E-commerce, Marketplaces, FinTech, Payments, Healthcare, HealthTech, Developer Tools, Productivity Tools, Analytics Platforms, Data Platforms, Media, Social Platforms
$17/hr
100% Job Success
$81 earned
Available now
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Iโ€™m a mobile app developer with 8+ years of experience building, fixing, and maintaining apps for iOS and Android. I specialize in Ionic, Capacitor/Cordova, React Native, and Flutter, and have published multiple apps to both the Google Play Store and Apple App Store. I donโ€™t just build apps โ€” I help solve problems when things arenโ€™t working. What I can help with: Fixing build issues (Xcode, Android Studio, Gradle) Debugging Cordova / Capacitor plugin problems Creating or modifying custom plugins API integration and backend connectivity Firebase integration (auth, push notifications, database) App Store / Play Store deployment and fixes Migrating legacy Ionic / AngularJS apps to modern frameworks Iโ€™ve developed custom solutions like a barcode + speech VIN scanner and have extensive experience working with device features and native functionality. I also take on small or urgent tasks, whether itโ€™s fixing a crash, resolving a plugin issue, or getting your app unstuck quickly. My background in DevOps and backend systems (AWS, REST APIs, MySQL/Postgres) allows me to handle both frontend and backend issues when needed. If your app is broken, stuck, or needs improvement, I can help get it working efficiently.
$99/hr
100% Job Success
$100K+ earned
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My software career started when I was 14, with writing Ruby web apps for small businesses, freelance collectives, and failed startups (Instajournal anyone?). Now, another 14 years and hundreds of projects later: - I've built reactive web apps with React and reactive desktop apps with QtQuick; - I've worked on blockchains as well as an alternative to blockchains (Holochain); - I've designed low-cost zero-maintenance cloud apps comprised of AWS or GCP services; I've also managed custom baremetal deployments. - I've maintained an innovative Linux distribution (NixOS); I've even worked on Linux kernel device drivers. What I can bring to the table: - Breadth. Instead of trying to force a square peg into a round hole by implementing a technology that doesn't align with your use case, I can select something that's tailored to your domain. - Depth. If what you're trying to do is best solved with a patch to the operating system, the database, or the programming language, that's what I'm going to do. And have done before. - Security. - Simplicity. I have extensive experience with Clojure, Rust, Python, Ruby, Elixir, Erlang, Go, Rust, Java, JavaScript programming languages and their respective ecosystems. When it comes to DevOps, I'm familiar with NixOS (commit access since 2017), NetBSD, OpenBSD, RHEL, Debian. I have designed cloud application architectures using various AWS and GCP services. I'm a fan of React for web and Qt for desktop. I'm well versed in use of modern cryptographic primitives, from signatures to PAKE. I work Monday through Friday from 9 to 5 Eastern (13 to 21 UTC). Send me a message and let's figure it out!
Ralph R.
$45/hr
100% Job Success
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Fullโ€‘Stack Developer & DevOps Consultant | 15+โ€ฏYears ๐Ÿ‡บ๐Ÿ‡ธโ€ฏAmericanโ€‘bornโ€ƒ|โ€ƒ๐Ÿ“โ€ฏBased inโ€ฏBacolod, Philippines (UTCโ€ฏ+8) I have delivered production web applications for healthcare, finance, government, education, and manufacturing, always with an eye on security, performance, and futureโ€‘proofing. From integrating with legacy systems, to building cutting edge AI systems, I provide technical leadership and a track record of success and innovation. Core Strengths: Backend & APIs - FastAPI, Flask, Django, Spring, REST, SOAP, GraphQL, HL7, EDI Frontโ€‘End Delivery - Reactโ€ฏ, Angular, JSP & PHP UIs DevOps & Automation - Docker, Jenkins, GitHub Actions, AWSโ€ฏ(CodePipeline, EC2, RDS, S3), Azureโ€ฏDevOps AI - Model Design, Model Training and Inference integrations, MCP server development, Semantic Search/RAG, Agentic Worflow development. Domain Contributions: Healthcare - Built HL7โ€‘driven data pipelines for a CDCโ€‘funded integration project, improving reporting completeness. Finance - Developed an investingโ€‘analytics portal for a hedge fund, adding advanced reporting & predictive dashboards. Government - Created cybersecurity dashboards for DHS projects, aggregating global threat data into a single view. Education - Delivered a tenureโ€‘tracking, enrollment, and classโ€‘scheduling systems. Manufacturing / Retail - Integrated Amazon SPโ€‘API, Shopify, Wayfair GraphQL, eliminating manual order entry and providing real time tracking and issue notifications. Tech Stack at a Glance: Languages - Python, Java, Rust, Go, TypeScript, C/C++, Clojure, PHP, Bash, SQL Frameworks - Spring, FastAPI, Django, Flask, Angular, React, Laravel, WordPressโ€ฏ/โ€ฏJoomlaโ€ฏ/โ€ฏSugarCRM Cloud & DevOps - AWSโ€ฏ(EC2, RDS, S3, CodePipeline), Azureโ€ฏDevOps, Docker, Airflow, Jenkins Data - PostgreSQL, MySQL, MsSQL, Berkeleyโ€ฏDB, Hadoopโ€ฏ/โ€ฏHive, Ms Access, Airtable Integrations - HL7, GraphQL, REST, EDI, Amazonโ€ฏSPโ€‘API, Wayfair, Shopify, n8n What Youโ€™ll Get: Fast, Lowโ€‘Friction Onboarding - I jump into legacy codebases without slowing your team. Clear Communication - Straightforward updates, realistic timelines, honest risk calls. Productionโ€‘Ready Deliverables - Tested, documented, and built for longโ€‘term maintainability. Ongoing Partnership - I stay available to support, optimize, and extend your system as your needs evolve. Seeking a developer who can bridge time zones and still feel like part of the core team? Letโ€™s discuss how I can keep your systems running smoothly and your roadmap moving forward.
Jorge R.
$33.33/hr
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I'm a Christian, the father of Bianca and Murilo, and a passionate software engineer with 10 years of experience creating diverse and efficient solutions. My career in software development is marked by a quick learning ability, a solid technical foundation, and a constant pursuit of professional growth. Throughout my journey, I have worked on challenging and impactful projects, taking on responsibilities ranging from feasibility analysis to implementation and maintenance. I have experience with technologies such as Ruby on Rails, Elixir (Phoenix), Clojure, Flutter, Scala (ZIO), NodeJS, React, Golang, MongoDB, Datomic, Datastore, MySQL, Postgres, Redis, RabbitMQ, Kafka, AWS, GCP, REST, GraphQL, ElasticSearch, Kibana, Logstash, Scout, NewRelic, HoneyBadger, Splunk, Datadog, Grafana, Prometheus, Loki, OpsGenie, Looker, and Sentry. I enjoy working on complex projects and transforming ideas into functional products that make a difference.
$90/hr
$1K+ earned
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Business first software generalist: 12+ years direct work with CXOs/VPs Cloud systems at scale: 100 K requests/sec, 300+ M monthly active users, AWS and Azure, CI/CD Educator: Staff education and community events (Clojure North, IN/Clojure,Belaying growth)