Hire the Best Google API Developers

Experienced AI & Low-Code developer. I build production automation systems and mobile apps that actually ship — not prototypes. Two focus areas: AI automation (n8n): I design workflows that connect LLMs (OpenAI, Claude, Gemini) to real business processes — content generation pipelines, lead qualification and routing, document/image analysis, and multi-platform publishing. I build with structured JSON outputs, error handling, and retry logic by default, and I bake human review gates into the parts that matter (compliance, brand approval, anything that shouldn't auto-publish on a hallucination) rather than chasing full automation for its own sake. FlutterFlow app development: production iOS/Android apps with Firebase backend, RevenueCat subscriptions, and third-party API integrations — taken from spec through App Store/Play Store launch, not just prototyped. Selected experience: - Built and launched multiple production FlutterFlow apps on the App Store and Google Play, including one with OpenAI-powered personalization features - Designed n8n pipelines combining LLM-based classification/extraction, structured data storage (Airtable/Postgres/Supabase), and automated multi-step workflows for content, recruitment, and outreach use cases - Participated in building one of the biggest Adalo apps — MyLabourBase - Contributed to the fast-growing startup TimeLeft Tech stack: n8n, OpenAI / Claude / Gemini, FlutterFlow, Firebase, Supabase, Airtable, PostgreSQL, RevenueCat, Docker, Xano, Make, Google Cloud, AWS. I'm direct about scope and honest about what a system can and can't reliably do — you'll get a realistic estimate, not an oversold one. Let's talk about what you're trying to build.

I help Amazon sellers and software teams turn Seller Central chaos into systems that protect margin: Amazon SP-API and Amazon Ads API integrations, data pipelines, AI command centers, and repricing automation. Top Rated, 100% Job Success Most sellers I work with are profitable and still flying blind. Sales, fees, ad spend, and inventory live in five different exports, so decisions get made on gut feel and last month's spreadsheet. The cost of that is invisible until you fix it: overspent ad budgets, out of stocks on winners, hours of skilled people doing copy-paste work. WHAT YOU GET ✅ One set of numbers you can trust. Your sales, fees, advertising, and inventory data flow automatically into one place and actually reconcile. One client's team got back six hours per analyst, every single week. ✅ Ad spend that stops leaking. Automated wasted-spend audits, search term negation, and bid and budget rules on the Amazon Ads API. You keep the sales, cut the spend that never converts. ✅ The Buy Box, more often. I built RepriceLab, a repricer with paying subscribers competing across 12+ Amazon marketplaces. Same engine, tuned to your catalog and your floor prices. ✅ An AI command center for your store. Ask Claude a plain-English question like "what changed in our margin last week and why" and get a real answer pulled live from Seller Central, Amazon Ads, Google Ads, Shopify, and ShipStation. The biggest one I run has 130 tools behind it for a DTC brand. ✅ Nothing that puts your account at risk. I am an Amazon-approved third-party developer with PII approval. Access goes through Amazon's official authorization, no passwords, no scraping, and you can revoke it in one click. WHY SELLERS PICK ME OVER A CHEAPER DEV Because the expensive part is never the code. It is the month you lose when a fragile script silently stops syncing and your numbers drift. Everything I ship includes the boring parts that keep it alive: retries, monitoring, logs, and an audit trail. I run my own product in production, so when something breaks, I feel it before my clients do. THREE WAYS TO START 1. A 60-minute consultation ($149). Bring your messiest problem. You leave with a diagnosis and a written plan you can execute with me or without me. 2. A fixed-scope Project Catalog package. One clear deliverable, one price, one deadline. 3. A small hourly task first. See how I work before you commit to anything bigger. Tell me your marketplace regions, what you are trying to see or automate, and your current stack. You will get a specific answer, not a canned pitch. FOR YOUR DEVELOPERS If a technical person is evaluating this, here is the depth behind the bullets. Amazon SP-API: OAuth and LWA token management, orders, inventory, listings, catalog, reports, feeds, pricing, product fees, financial events, notifications via SQS and EventBridge, restricted data tokens, and PII-safe handling under Amazon's data protection policy. Private and public app registration, security questionnaires, and PII review readiness. Amazon Ads API: campaign management and reporting across Sponsored Products, Brands, and Display, search term reports, bid and budget operations, Marketing Stream ingestion, and multi-account, multi-profile pipelines. Data engineering: ingestion into BigQuery or PostgreSQL, scheduled and event-driven jobs, idempotent backfills, rate-limit-aware queueing, reconciliation checks, and alerting on drift or failed syncs. MCP servers: private Model Context Protocol servers for Claude and Codex with scoped tools, per-action guardrails, approval steps for writes, and full audit logging. Stack: Python, FastAPI, TypeScript, NestJS, PHP, Laravel, PostgreSQL, BigQuery, AWS, Google Cloud, Shopify, Mercado Libre. Based in Montevideo, Uruguay. US business hours. Native English and Spanish.

Need a WordPress developer who understands the entire stack - not just themes and plugins? I build and maintain end-to-end WordPress websites (front-end, back-end, database, performance, security) with 12+ years of real production experience, delivering systems that work reliably from day one. Building a website isn’t enough anymore. I create high-performance WordPress & Custom websites that stay fast, secure, and conflict-free as traffic, content, and functionality scale. For over 12 years, I’ve been brought into existing WordPress projects to: - Fix issues other developers couldn’t trace - Improve performance and Core Web Vitals - Clean up unstable plugin/theme setups - Extend functionality with clean, maintainable code - Keep production websites fast, secure, and reliable This is senior-level WordPress work, not theme flipping or trial-and-error fixes. 🔧 How I Typically Help - Step into existing WordPress codebases and quickly understand structure - Debug performance issues, conflicts, and hard-to-reproduce bugs - Customize themes and plugins to meet real business needs - Build custom plugins when off-the-shelf solutions fall short - Optimize WordPress and WooCommerce sites for speed, SEO, and scalability - Secure installations and prevent recurring security issues - Integrate third-party APIs, services, and automation tools - Work closely with designers, content teams, and project managers The goal is always the same: a stable, fast, and maintainable WordPress site teams can trust. 🧠 Technical Strengths That Matter in Production Core Stack - PHP, MySQL - JavaScript (ES6+), jQuery - HTML5, CSS3 - WordPress Core, REST API, WP-CLI Development & Workflow - Custom plugin development - Theme customization & child themes - Git-based team workflows - Debugging tools, logs, and performance profiling Performance & SEO - Core Web Vitals improvements - Caching, database optimization, cleanup - SEO-friendly structure and best practices Security & Stability - Malware cleanup & prevention - Plugin/theme conflict resolution - WordPress hardening - Safe updates and rollback strategies ⚡ Why Clients Choose Me for Senior Roles - 10+ years of continuous Upwork experience - Trusted on long-running, high-responsibility projects - Strong problem-solving and debugging skills - Clear communication with technical and non-technical stakeholders - Reliable delivery on live, revenue-generating websites Many clients keep me involved for months or years because they want stability, not constant firefighting. 🤝 How I Work - I ask the right questions upfront - I focus on root causes, not temporary patches - I write clean, maintainable code - I respect existing workflows and timelines - I integrate smoothly into ongoing teams If something will cause problems later, I’ll flag it early and propose a better approach. 🎯 Best Fit Projects ✔ Senior / long-term WordPress development ✔ Custom plugin or theme work ✔ Performance & speed optimization ✔ Debugging & troubleshooting ✔ Team-based or ongoing development ❌ Low-quality theme flipping ❌ “Just install this plugin” requests 📩 Let’s Work Together If you need a senior WordPress developer who can: - Jump into an existing project confidently - Improve stability, performance, and maintainability - Work reliably with your team - Deliver without drama Send me your project details and current challenges, I’ll tell you exactly how I can help.

I used to be the person on the support team fielding the same integration question five times a day - because the docs never explained it properly. That's what pulled me into technical documentation engineering. Not theory. The actual gap between what a product does and what a developer or non-technical end-user can figure out from the docs alone. Since then, I have spent my time cleaning up that gap for SaaS companies. I write and structure API documentation that developers can actually follow without pinging support - OpenAPI/Swagger specs, endpoint references, authentication guides, quickstarts, and the kind of "Getting Started" pages that stop a new user from bouncing in the first five minutes. A good chunk of my recent work has also been in n8n - documenting custom nodes, workflow logic, and automation setups so that teams (and their clients) understand exactly what's running under the hood and why. I like this kind of work because it sits right at the intersection of technical accuracy and plain-English clarity - you need both, or the doc is useless. {What I bring to your project}: - API documentation (OpenAPI/Swagger, REST, Postman collections) - SaaS product docs, help centers, and onboarding guides - n8n workflow and node documentation - Rewriting/auditing existing docs that are outdated, inconsistent, or just confusing If your product works but your documentation is quietly costing you support tickets, churn, or dev time - that's exactly the kind of mess I like sorting out. Send me a message and tell me what you're working with. ------------------------------------------------------------------- {My Background and Skillset} With a strong background in software engineering and web development, I understand the systems behind the documentation. This allows me to work directly with APIs, codebases, product teams and technical stakeholders to create accurate, well-structured documentation that stays useful as products evolve. 🔹 User Guides | How-to Guides I create clear, task-focused documentation that helps users understand your product, complete workflows efficiently, and reduce dependency on support teams. ✅ User guides ✅ How-to guides ✅ Step-by-step tutorials ✅ Product onboarding guides ✅ Feature walkthroughs ✅ Knowledge base articles ✅ FAQs and troubleshooting guides ✅ Internal process documentation ✅ User manuals ✅ Visual workflows and screenshots 🔹 API Documentation (OpenAPI / Swagger Expert) I create complete, production-ready API documentation that includes: ✅ Clear endpoint descriptions ✅ Request body parameters ✅ Query parameters & path parameters ✅ Authentication flows (JWT, OAuth, API Keys) ✅ Response structures with status codes ✅ Error codes with detailed schemas ✅ Properly defined data models ✅ Example requests & responses ✅ Postman collections ✅ SDK usage examples I work extensively with: Markdown • YAML • JSON • OpenAPI • Swagger • Redocly • Postman • GitHub ▪︎ ReadMe • Google Docs ▪︎ Zendesk • Docusaurus Your APIs will not only function well - they will be understood instantly. 🔹 Developer & Technical Documentation I create: ✅ Developer Guides ✅ API References ✅ SDK Documentation ✅ Integration Guides ✅ Database Documentation (SQL & NoSQL) ✅ System Architecture Documentation ✅ Technical Blogs & Articles ✅ Internal Engineering Documentation ✅ System Operating Procedures (SOPs) ✅ User Manuals ✅ How-To Guides ✅ Step-by-Step Tutorials Whether your audience is developers, internal teams or non-technical users - I adapt tone, depth and structure accordingly. 🔹 Developer Portals & Documentation Platforms I build structured, branded documentation portals using: ✅ Redocly ✅ ReadMe ✅ GitBook ✅ Docusaurus ✅ Mintlify ✅ Stoplight ✅ Confluence ✅ GitHub I ensure your documentation is searchable, scalable, version-controlled, and beautifully structured. 🔹 Technical & Engineering Strength My technical capabilities allow me to go beyond surface-level writing: ✅ Testing and validating APIs with Postman ✅ Running and testing SDKs ✅ Code commenting and codebase documentation ✅ JavaScript & TypeScript documentation ✅ Python code refactoring & documentation ✅ REST API workflows ✅ JSON, YAML, HTML, CSS ✅ Database structure documentation (SQL | NoSQL) Because I understand the code, I document it accurately. ----------------------------------------------------------------------------------- ##TechnicalDocumentationEngineering #TechnicalWriting #TechnicalDocumentation #UserDocumentation #UserGuides #APIDocumentation #OpenAPI #Swagger #SOPWriting #KnowledgeBase #DeveloperDocumentation #InstructionManual #ProcessDocumentation #SoftwareDocumentation #Markdown #GitBook #n8n #n8nAutomation

Experts in API Integration and Integration Architecture for complex business systems. When business systems must exchange data reliably, simple API connections are rarely enough. We design and build production-grade API integrations connecting ERP, CRM, e-commerce platforms, and internal systems — focusing on reliability, observability, and long-term maintainability. Our work centers on custom integrations that support real business operations, not fragile scripts or quick automation hacks. 🧩 What We Do 🔹 API Integration & System Connectivity Design and implementation of reliable API integrations between ERP, CRM, e-commerce, marketing, and internal systems using REST APIs, webhooks, and secure authentication. 🔹 Integration Architecture Design of robust integration architectures including data synchronization strategies, retry logic, monitoring, error handling, and long-term maintainability. 🔹 On-premise Integration Platforms Custom API integration hubs deployed on your infrastructure (Laravel / PHP), including scheduling, logging, monitoring, and full operational control. 🔹 API Development & Consulting End-to-end API development: REST API design, OAuth authentication, webhook processing, multi-system integration strategies, system audits, and integration consulting. 🔹 Data Synchronization Reliable data pipelines between ERP, CRM, analytics, and internal systems with validation, monitoring, and recovery mechanisms. ⚙️ Our Strengths ✅ Strong focus on API integration for complex business workflows (finance, e-commerce, logistics, marketing operations) ✅ Production reliability by default — logging, retries, monitoring, and alerts included ✅ Security-first architecture suitable for on-premise and private cloud deployments ✅ End-to-end ownership — from architecture and API development to deployment and long-term support 🧠 Tech Stack Languages & Frameworks: Laravel / PHP / Node.js / Python Integration Technologies: REST APIs, Webhooks, OAuth, event-driven integrations Platforms & APIs: HubSpot, QuickBooks Online, Xero, Shopify, Acumatica, BigCommerce, Airtable, Slack, Notion, Google Workspace Infrastructure: AWS, DigitalOcean, Docker, Linux 🌟 Why Clients Choose QPMSoft 💼 $400K+ earned on Upwork | 100% Job Success | 10+ years building integration systems 🤝 Clear communication, fast response times, and realistic expectations 🚀 Flexible engagement models — from focused API integrations to long-term integration platforms Whether you need API Integration, custom API Development, or reliable system integrations between ERP, CRM, and e-commerce platforms, we focus on building systems that are stable, maintainable, and production-ready.

I build data- and API-heavy platforms on Laravel + React — and own them end-to-end. My focus is the parts most developers bolt on as an afterthought: interactive maps (Mapbox / Leaflet / Google Maps) and Meta / Google marketing-API integrations. 15 years, 50+ projects delivered, 100% Job Success. I work best on systems built to last and grow — but I'm just as happy taking a single, well-scoped task to start. ⚙️ FULL-STACK WEB PRODUCTS Laravel APIs paired with React frontends, built to last — not just to ship. From SaaS platforms and admin dashboards to a multi-brand CMS engine powering 15+ automotive dealer websites (Volvo, Mercedes-Benz, Alfa Romeo, Jaguar, Land Rover). 🗺 Interactive Maps — Mapbox / Leaflet / Google Maps API ◾ Custom maps: styled tiles, markers, plotting live data ◾ Map tools: drawing & editing shapes, measurements and calculations on the map ◾ Example: a solar-PV design tool with live roof mapping 🛠️ Meta Graph / Marketing API ◾ Lead capture: real-time leads delivered straight to CRM, email, or messenger ◾ Ad tooling: custom reporting logic, automated insights, campaign automation ◾ Publishing & analytics: posting to Instagram/Facebook (feed, stories), post & profile insights 🗃️ Google API ◾ Custom Looker Studio connectors ◾ Google Merchant Center feeds (recent project: 30k+ SKUs synced) ◾ Google Ads automation tools 💳 Payments ◾ Standard and custom Stripe / PayPal / Afterpay integrations However you want to start — a full build, a senior pair of hands on an existing codebase, or one focused task (a map feature, a Meta/Google API integration, a tracking or feed setup) — I'm easy to work with and quick to get going. Send a short note about your project, even a rough idea, and I'll tell you honestly how I'd approach it. 🤝 Thank you, Vitalii Komliev