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I'm a full-stack (my favorite stack that I'm passionate about is Node.js + Angular) senior software engineer with over 10 years of experience working with some of the best World-Class GIANTS in the industry (Google, Vanguard Group, Volkswagen Group etc.) Great experience in eCommerce | Retail | Automotive | Fin-tech businesses I offer: ✨Frontend/backend development ✨ Web application development ✨ API development / Integrations ✨AI Workflow Automation Tech stack: ♦ Front: Angular / React / Next.js / Nuxt.js / Redux / React Native / React Query / Тypescript / Bootstrap ♦ Back: Node.js / Express / Nest.js / Koa / Apollo ♦ CD: Docker / Kubernetes / Helm / Ansible / AWS / GCP ♦ Databases: Postgres / Mongo / Cockroach.db / MySQL / Firebase / Supabase ♦ Workflow Automation / Base44 / N8N / Zapier / Make ♦ Message brokers: Kafka / NATS / RabbitMQ ♦ APIs: gRPC / REST / GraphQL ♦ Patterns: Hexagonal architecture / CQRS / Microservices Tags: Website Developer| Angular | React | React Native | Vue | Javascript | Mobile Apps | Ecommerce | WordPress | UI/UX | Flutter | SaaS | Front-end | Backend development

Mobile Flutter Developer with DevOps expertise — building cross-platform iOS & Android apps and owning the full delivery pipeline: AWS, Kubernetes, Ansible, Terraform, CI/CD. 10+ years in software engineering. I deliver production-ready Flutter apps together with the infrastructure that builds, deploys, and runs them. Flutter Development: Flutter & Dart — performance optimization, clean architecture, responsive UI/UX State management — BLoC, Provider, MobX, Riverpod Animations & graphics — custom animations, CustomPainter, Rive/Lottie, shaders Maps & geolocation — Google Maps, Mapbox, real-time tracking Native integrations — platform channels, C++ libraries, real-time audio processing App Store & Google Play deployment, release management DevOps & Cloud Infrastructure: Infrastructure as Code — Terraform, Ansible; Kubernetes orchestration with Helm CI/CD — automated builds, testing, and deployments (GitHub Actions, Jenkins, GitLab CI, Fastlane, Docker), including mobile release pipelines to App Store and Google Play Monitoring & observability — Prometheus, Grafana Cloud platforms — AWS, Google Cloud (GCP), Hetzner; Linux server administration Firebase & Supabase — auth, real-time database, cloud functions, hosting Backend Development: Node.js, Python, Java, Dart backends API design — REST, GraphQL, gRPC, WebSockets Databases — PostgreSQL, MySQL, MongoDB, Redis, SQLite AI & LLM: AI/LLM integrations in production apps — OpenAI, Anthropic (Claude), Gemini APIs AI-assisted development workflow — Claude Code and OpenAI Codex Experience: multiple production apps delivered end-to-end as a solo developer — UI, backend, cloud infrastructure, and deployment automation. Comfortable owning a product fully or working inside an experienced team. I care about code quality, long-term maintainability, and delivering real value — not just completing tasks. If you need someone who understands mobile development, backend, and the infrastructure that connects them into a working product — I'd be glad to help. = = = Career Highlights = = = Oct 2024 – Present — Senior Flutter & DevOps Engineer Building production Flutter apps end-to-end with cloud infrastructure and deployment automation: AI/LLM-powered features, real-time systems, infrastructure as code. Working independently, owning products from UI to deployment. Stack: Flutter/Dart, Python, AWS & Google Cloud, Kubernetes, Terraform, Ansible, Docker, Firebase, Supabase, PostgreSQL, MySQL, Redis, MongoDB Dec 2018 – Oct 2024 — Senior Flutter Developer Six+ years of Flutter in production since its early releases: multiple apps shipped to App Store and Google Play, real-time and data-driven architectures, solo ownership from UI to backend. Stack: Flutter/Dart, Supabase, Google Cloud, Firebase, PostgreSQL, SQLite, Linux 2015 – 2018 — Full-Stack JavaScript Developer Web applications and data visualization for production use. Stack: JavaScript (React, D3), Node.js, Python/Django, MongoDB 2010 – 2013 — Java Developer Enterprise web applications. Earned Oracle Certified Professional, Java Programmer. Stack: Java, GWT, Oracle DB 2006 – 2008 — Web Developer First commercial projects; Linux as a daily driver since then. Stack: PHP, JavaScript, MySQL, Linux = = = Technologies = = = Flutter • Dart • BLoC • Provider • Riverpod • MobX • CustomPainter • Rive • Lottie • Google Maps • Mapbox • Push Notifications • Firebase Cloud Messaging • In-App Purchases • Hive • CI/CD pipeline • GitHub Actions • Jenkins • GitLab CI • Fastlane • Docker • Kubernetes • Helm • Terraform • CloudFormation • Ansible • Prometheus • Grafana • Bash scripting • AWS • EC2 • S3 • EKS • Lambda • Google Cloud • GCP • Firebase • Supabase • Linux • Node.js • Python • Django • PostgreSQL • MySQL • MongoDB • Redis • REST API • GraphQL • gRPC • WebSockets • LLM integration • RAG • AI chatbot • OpenAI API • Anthropic API • Claude API • Gemini API • Claude Code • OpenAI Codex • Stripe • App Store • Google Play

Senior Software Engineer with 10+ years delivering full-stack products — from high-traffic user interfaces to backend services. For the last six years I was embedded as a long-term contractor in Upwork's own Trust & Safety team, owning compliance and enforcement features used by tens of millions of users. I held PagerDuty on-call responsibility for my domains and shipped features end-to-end, independently across both frontend and backend layers. I build across Vue, React, Angular, TypeScript, Node.js, Java, and Python. Lately I've been going deep on Applied AI: LLM integrations, autonomous agent systems with LangGraph, and AI-accelerated engineering workflows using Cursor with MCP tooling. What I bring to a project: → End-to-end ownership — I've built and shipped features solo across both frontend and backend, from design review through production release. → Scale — Upwork runs at tens of millions of users. I know what production-grade code looks like. → AI-augmented delivery — I use Claude Code and Cursor with MCP integrations to ship faster without cutting corners. At Upwork I delivered a migration project in two weeks that was originally scoped for significantly longer. → Reliability — six years as a trusted long-term contractor on a single high-stakes team speaks for itself. Stack: Frontend: Vue 3, Nuxt, React, Redux, Angular, TypeScript, RxJS Backend: Node.js, Nest.js, Java, Python, Go APIs: GraphQL, gRPC, REST Data: PostgreSQL, MongoDB AI tooling: LangGraph, MCP integrations, Claude API, Cursor I work remotely on contract. If you're building something serious and need an engineer who can own it end-to-end — let's talk.

Helping manufacturing and industrial teams build scalable CPQ, quoting, pricing automation, quote generation, proposal generation, and quote-to-cash systems that actually work in real sales operations. Experience working with CPQ platforms including Salesforce CPQ, Revenue Cloud, Oracle CPQ, Apttus CPQ, custom product configurators, and pricing automation solutions. Verticals: industrial equipment, HVAC & mechanical contractors, contract manufacturing, building materials, engineered products, custom assemblies, field services. Where I've helped: Spreadsheets → structured quoting & pricing automation Moved pricing logic, product configuration rules, pricing configuration, quote generation processes, and approval workflows out of Excel into scalable CPQ and quote management systems sales reps can actually use without breaking pricing. Homegrown tools → maintainable quote-to-cash systems Preserved existing business logic while removing single-developer dependency and improving maintainability, quoting workflows, sales operations visibility, CRM automation, and RevOps processes. Document builders (PandaDoc, Qwilr) → automated proposal generation Connected configuration, pricing engines, CRM data, Salesforce CRM, and ERP systems so quotes, proposals, SOWs, and sales documents generate automatically from rules instead of manual assembly. Heavy CPQ (Salesforce CPQ, Oracle CPQ) → right-sized implementation Simplified existing CPQ setups, pricing workflows, quote generation processes, product configuration models, and product configurators — or replaced overengineered systems with tools that better match how the sales team actually sells. Quote-to-cash workflow setup end-to-end Quotes → proposals → contracts → e-sign → sales orders → fulfillment Built full document automation flows with branded proposal generation, contract generation, approval routing, e- sign integration (DocuSign, PandaDoc, native e-sign), and downstream Sales Order / Purchase Order automation. Approved quotes flow directly into fulfillment without manual re-entry, duplicate data entry, pricing mismatches, or version control issues between sales and operations. Experience with: CPQ, Configure Price Quote (CPQ), Salesforce CPQ, Revenue Cloud, pricing automation, pricing configuration, proposal automation, sales quoting, quote generation, proposal generation, RevOps workflows, Quote to Cash (QTC), sales document automation, CRM automation, Salesforce CRM, Salesforce Sales Cloud, product configuration, approval workflows, contract management, ERP/CRM integration, API integration, subscription pricing, dynamic pricing, sales operations, and quote-to-cash processes. Not sure where to start? Send a quick overview of your current quoting process, pricing workflow, quote generation process, CPQ implementation, or proposal generation setup — I’ll take a look and share what I’d improve, no commitment required.

I'm an eCommerce web developer with 9 years of experience in building websites for small and medium sized businesses. 🏎 I can make any website, make it quickly and make it fast! My specialisation is: - Custom website development - Website speed optimisation - User experience - Accessibility 🎸 My JAM Stack: - Front-end: React.js, Next.js, Gatsby.js - Back-end: Node.js, Express.js, Nest.js - Headless CMSs: Builder.io, Dato CMS, Wordpress, Strapi, Contentull - Headless eCommerce: Shopify, WooCommerce, Snipcart, Swell, CommerceLayer - Online payments: Stripe, Braintree - Search: Algolia - Live Chat: Intercom, Chatbot, Help Crunch - Services integration: Make.com (Integramat) - Meeting Scheduling: Calendly - Google Docs - Google Drive - Airtable - and any integration with any 3rd party service

✯ Result-Oriented, ✯ Reliable and ✯ Reactive Web Developer. More than 12 successful years on the market! What my ❤ clients say about my work: ✓ A+++. Erbol is an extremely talented and responsible developer. For sure will hire him again with the new projects ✓ "Modern Javascript" is the phrase that comes to mind when I think about Erbol. I’ve had the pleasure of knowing Erbol for our Highlanders project as his supervisor at Incentient, during which he heavily lead the team in the technical aspects of the Highlanders project from start to finish. Above all, I was impressed with Erbol ability to guide and assist others in development. And, of course, his creative ability to resolve problems in the development cycle in a timely manner. Erbol would be a true asset for any positions requiring Javascript and this comes with my heartfelt recommendation. ✓ Erbol delivered everything we asked of him, he adhered to deadlines and he is a top-notch Angular developer. His communication skills are excellent and he really helped us when it came to solving a couple of problems. If we'll need an Angular developer we'll definitely contact him again. ✓ It was a big pleasure to get Erbol's consultation! I've got all the answers to my questions about Ionic and NativeScript. Thank you! ✓ Erick was a very valuable addition to our team while we developed a mobile app that required his very specific expertise and skill set. We could not have done it without him! Erick is talented, knowledgeable and reliable. Erick was so dedicated to our project that he postponed his vacation to accommodate our deadlines. He conducts himself with the utmost professionalism and takes pride in his work. I would highly recommend Erick as a software engineer. ✓ He was an excellent CSS designer and I enjoyed working with him. His communication and responsiveness were top-notch and his skills were reasonably strong. My expectations were exceeded and I will likely have additional jobs for him in the future. Thank you. ✓ Erick did a really great job. I hired him two times and I will do it again. ------------------------------------------------------------------------------------------------------- My ❤ skills: » JavaScript: Angular, Vue, Vuex, Vuetify, React, ReactNative, Redux, NativeScript, Ionic, Polymer, Rocket.Chat, RxJS, Canvas API, D3.js, Chart.js, Three.js, WebGL, Aggrid, Bootstrap, TypeScript, ES7, Web Workers, Service Workers, PWA, WebUSB, WebAssembly » NodeJS: Express, Koa, Sails.js, Quasar Framework, Nuxt.js, Meteor, Socket.io, GraphQL, Apollo, Electron, PM2, Gulp, Grunt, Webpack, Babel, Sass » Java: Spring, Spring MVC, Spring Boot, Spring Batch, Apache Camel, Maven, Gradle » PHP: Laravel, Symfony, Yii, WordPress, Woocommerce, SmartJobBoard, ProcessWire » Databases: MariaDB, PostgreSQL, Oracle, SQLite, Amazon Aurora, H2, MongoDB, CouchDB, Elastic Search, Redis, MemcacheDB, LevelDB, NeDB » Other: Flutter, GraphQL, ElasticSearch, Algolia, Docker, Kubernetes, Neo4j, Apache Server, Nginx, Wowza, AWS, Azure, Google Cloud, FIrebase, Firestore, Datastore, Heroku, OpenShift, Gitlab, CD/CI, Jira, Agile Scrum, Scaled Agile, Tensorflow