Hire the Best LinkedIn API Developers

Repetitive tasks draining your energy and resources? I help startups, SaaS teams, and growing businesses eliminate inefficiency with AI-powered automations, chatbots, and custom integrations. With proven expertise in n8n, Zapier, Make.com, Supabase, LangChain, and OpenAI, I design workflows that save 10–40+ hours per week, reduce costly human errors, and free your team to focus on growth. 💡 What I deliver: End-to-end workflow automations (marketing, CRM, lead gen, reporting). Smart AI-powered assistants & chatbots that scale customer support. Data pipelines & API integrations across SaaS platforms. Clean, documented solutions with error handling + long-term reliability. 🚀 Why work with me: ✔️ Hands-on experience building AI Agents and business automations used daily. ✔️ Clear communication + milestone-based delivery. ✔️ Proven results: automations that save clients 80+ hours/month and cut subscription costs by $500+. ✔️ Post-delivery support & training so your team is empowered. Let’s turn your processes into scalable, intelligent systems that accelerate growth. Send me a message with your workflow challenge, and I’ll propose a tailored solution!

✅ Meta App Approvals — Guaranteed. Or You Don't Pay. While others guess their way through Meta's review process, I've spent 10+ years engineering the systems behind it. I don't just get approvals. I build the products that need them. 📊 The Numbers: 🏆 270+ Projects Completed 💰 $200K+ Earned on Upwork ⭐ Top Rated Plus | Top 3% Globally | 5-Star Rated 🚀 60+ Apps Approved in the last 6 Months 🔐 400+ Permissions Secured 🛠️ 30+ SaaS Products Built from scratch on Meta APIs Most freelancers submit your app with hope but I know exactly what Meta's reviewers want because I've been in this ecosystem since before most developers knew the API existed. 🎯 You bring the vision. I'll bring the build and the badge. 🚫 Rejected by Meta? I fix that fast. If you're hitting the "Invalid Screencast" wall or stuck in an endless rejection loop, you're not alone and you're in the right place. I've rescued hundreds of clients from exactly this situation. I handle everything, I record the screencast myself, prepare the full submission, and manage direct communication with Meta's review team until you're approved. Most clients get the green light in 1–10 business days. Meta & Social Platform Approvals: ✅ Meta App Reviews or API Permission Approvals Expert ✅ Facebook App Review Expert ( Facebook Pages & Instagram & Ads & Threads) API Permissions Approval for Advanced Access ✅ Facebook API permissions Approval Expert ✅ Instagram API Permissions Approval Expert ✅ Meta Marketing / Ads API Permissions Approval Expert ✅ Threads API Permissions Approval Expert ✅ Expert Facebook/Instagram/Telegram/WhatsApp Chatbot Developer ✅ Expert in API integration ✅ Expert Facebook API Developer ✅ Expert Instagram API Developer ✅ Facebook Tech Provider/ Access Verification Expert ✅ Facebook Business Account Verification Consultant ✅ Meta App Data Deletion Request Callback Implementation ✅ TikTok Marketing Developer App Approval Expert ✅ TikTok Developer API App Approval Expert ✅ Expert in Marketing Automation Software ✅ Expert in WordPress Plugin Development ✅ Worked with PHP Script and SaaS selling company Codecanyon, Jvzoo, Warrior+Plus. ⭐ Why clients come back: I don't hand you a checklist and disappear. I'm in the trenches with you — writing, recording, submitting, and negotiating — until Meta says yes. 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗔𝗣𝗜 (𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗟𝗼𝗴𝗶𝗻) instagram_business_basic, instagram_business_manage_comments, instagram_business_manage_messages, instagram_business_manage_insights 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗔𝗣𝗜 𝗣𝗲𝗿𝗺𝗶𝘀𝘀𝗶𝗼𝗻𝘀 pages_read_user_content, pages_manage_posts, pages_show_list, pages_manage_metadata, pages_user_locale, pages_user_gender, pages_manage_engagement, pages_messaging, read_insights, pages_read_engagement, pages_user_timezone, Business Asset User Profile Access 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗚𝗿𝗮𝗽𝗵 𝗔𝗣𝗜 (𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗟𝗼𝗴𝗶𝗻) instagram_basic, instagram_content_publish, instagram_manage_comments, instagram_manage_messages, instagram_manage_insights, Instagram Public Content Access, Human Agent, instagram_branded_content_ads_brand, instagram_branded_content_brand 𝗠𝗲𝘁𝗮 𝗠𝗮𝗿𝗸𝗲𝘁𝗶𝗻𝗴 / 𝗔𝗱𝘀 𝗔𝗣𝗜 business_management, ads_read, ads_management, pages_manage_ads, leads_retrieval, catalog_management 𝗧𝗵𝗿𝗲𝗮𝗱𝘀 𝗔𝗣𝗜 threads_basic, threads_content_publish, threads_keyword_search, threads_manage_insights, threads_manage_mentions, threads_manage_replies, threads_read_replies 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗣𝗜 whatsapp_business_messaging, whatsapp_business_management 🛠️ What I Do: I specialized in Meta API development and social media SaaS products — from Facebook Graph, Marketing, and Messenger APIs to Instagram (Graph, Business), WhatsApp Business & Cloud API, Threads, Twitter/X v2, Pinterest, Reddit, Shopify, integrations. I also handle Webhook, IPN, and Cron Job setups end to end. SaaS Products I've Built: Instagram Comment & DM Automation, Facebook Ads Creation Portals, Social Media Posting Platforms, AI Chatbots powered by OpenAI & ChatGPT for Messenger and Instagram, CRM Dashboards, and Marketing Automation Software. I've worked with ChatPion, Stackposts, and ChatWoot. Any white-label social media tool — I've seen it and can get it approved. ⚙️ Tech Stack: JavaScript (TypeScript,React,Next.js,Node.js, Express, Vue), Python, PHP (Laravel, CodeIgniter), MySQL, PostgreSQL,MongoDB,Redis,AWS,Git 💬 What Clients Say: ⭐ "Mir was an absolute game-changer. Deep understanding of Meta's API ecosystem — permissions, configurations, best practices. If you need a Meta API expert who is highly skilled and a pleasure to work with, Mir is the person to hire." — Sheila, USA ⭐ "Best guy on Upwork for API development. We already hired him on another project." — Marius, Romania ⭐ "His knowledge of FB and API integration is really deep and comprehensive. Very happy." — Fabrizio, Italy ⭐ "Anything Meta app permission related, he'll fix it for you." — Roy, USA

Senior PHP & Laravel Developer, 6+ years, 450+ projects delivered across SaaS platforms, e-commerce stores, and custom WordPress builds. I maintain open-source Laravel packages other developers run in production, code's public on GitHub under /malikad778, review it before you hire me. What I work on: PHP | Laravel SaaS backends, multi-tenant architecture, Stripe/PayPal billing, job queues, real-time features (Reverb, Pusher) REST & headless APIs, versioning, Sanctum/Passport/JWT auth, third-party integrations built to survive vendor changes WordPress, custom plugins, hook architecture, WooCommerce extensions, REST bridges between WP and Laravel Legacy & performance, inherited Laravel codebases, test coverage, N+1 fixes, modernization without downtime E-commerce, order pipelines, multi-channel inventory sync (Shopify, WooCommerce, Amazon, Etsy), payment gateway integrations Shipped publicly. A multi-channel notification engine for Laravel 12 (parallel dispatch, smart routing), a static analysis tool that catches dangerous migrations before they hit production, and a passive API contract monitor that flags breaking third-party API changes before they break your app. Stack: PHP 8.x, Laravel, MySQL, MongoDB, Redis, Docker, Nginx, REST/GraphQL APIs, WooCommerce. Best fit. Founders and technical leads who need someone to own the backend without hand-holding. Give me a spec, I'll ask the right questions. Give me a problem, I'll figure out the architecture. Open to fixed-price and long-term contracts. Usually respond within 10 minutes.

I build things that actually work and deliver fast. Over the past few years I've built and shipped real products — not just freelance gigs, but full systems I personally use and maintain. That includes a complete inventory management system for an e-commerce brand (Shopify + Shiprocket integration, RTO tracking, courier scoring, fraud detection), an algorithmic trading bot running on live Indian markets, and an automated content posting pipeline. All Python, all production. My sweet spot is backend work and automation — REST APIs, custom Python scripts, database design, third-party integrations, AI-powered tools. If you need something connected, automated, or built from scratch, I can do it. I work fast, communicate clearly, and won't disappear mid-project. If something needs fixing after delivery, I'll fix it — no drama. What I can help with: Python scripting and automation REST API development and integrations Custom software and internal tools AI integrations (Claude, OpenAI Gemini) Database work PDF generation, data pipelines, web scraping If you have a problem and need it solved quickly, just message me.

→ Scope agreed before code, architecture doc before line one, working software you can click every week. That's how I work on every project. ⭐️ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 on Upwork 💯 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 (and proud of it!) 💰 $𝟑𝟎𝐊+ 𝐄𝐚𝐫𝐧𝐞𝐝 🏅 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 𝐒𝐞𝐥𝐥𝐞𝐫 🕒 𝟗+ 𝐲𝐞𝐚𝐫𝐬 in web development: 5+ as a software engineer at product companies (Signavio, Airlift), 4 freelance Most founders find me after a React or Next.js build stalled: slow pages, brittle APIs, an AI feature that never shipped. I'm a full-stack developer (React, Next.js, Node.js, TypeScript, Python) who does AI and API integration properly: RAG, agents, workflow automation, and Claude/OpenAI in production. 𝗠𝘆 𝗖𝗼𝗿𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 → Full Stack Development (Start to Finish) The load-bearing stuff done right, so it doesn't break at 2 am. React and Next.js App Router (Server Components, SSR/ISR/CSR, performance optimization), Node.js, NestJS, Python (FastAPI), REST and GraphQL. Supabase and PostgreSQL with row-level security, real-time subscriptions, and multi-tenancy. Auth and RBAC for B2B SaaS. Stripe subscriptions and metered billing that doesn't leak revenue. TypeScript-strict throughout. Built for SaaS from day one: multi-tenant architecture, subscription billing, and scale. → AI Development & Integration A working AI layer on software that already has users. RAG pipelines on Pinecone, pgvector, and Chroma (legal search, healthcare KBs, enterprise Q&A). Chatbots that retrieve from your actual data instead of guessing at it. Claude API, OpenAI GPT-4o, function calling, structured outputs: LangChain and LangGraph agents and multi-agent workflows. → API Integration & Automation Third-party APIs, CRM systems, payment gateways, legacy service connections. AI-powered workflow automation built in n8n, Make. com, Zapier, and GoHighLevel. 390+ hours on a single ongoing API integration and GoHighLevel automation contract. → 𝐑𝐞𝐬𝐜𝐮𝐢𝐧𝐠 𝐄𝐱𝐢𝐬𝐭𝐢𝐧𝐠 𝐁𝐮𝐢𝐥𝐝𝐬 Inherited codebase, missing docs, previous developer gone. I take it over, stabilize it, and leave it handoff-ready. 𝐒𝐤𝐢𝐥𝐥𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 → Frontend: React | Next.js App Router | Server Components | SSR / ISR / CSR | TypeScript | Tailwind CSS | Performance Optimization → Backend: Node.js | NestJS | Python | FastAPI | REST APIs | GraphQL → Databases: PostgreSQL | Supabase | Row-Level Security | Realtime | Multi-Tenancy → AI & RAG: Claude API | Claude Code | OpenAI API | GPT-4o | Function Calling | Structured Outputs | LangChain | LangGraph | AI Agents | Pinecone | pgvector | Chroma | Vector Databases | AI Chatbots → Automation: Workflow Automation | n8n | Make. com | Zapier | GoHighLevel | Webhooks | CRM Integrations → Auth & Payments: Clerk | Supabase Auth | RBAC | Stripe API | Subscriptions | Metered Billing → DevOps & Tools: AWS | GCP | Vercel | Docker | GitHub Actions | CI/CD 𝐑𝐞𝐜𝐞𝐧𝐭 𝐁𝐮𝐢𝐥𝐝𝐬 → 𝐄𝐧𝐭𝐫𝐞𝐩𝐞𝐝𝐢𝐚: PLR marketplace SaaS on Next.js with Stripe billing → 𝐇𝐞𝐚𝐥𝐭𝐡𝐝𝐞𝐬𝐤𝐀𝐈: AI CRM that turns leads into booked clients for fitness businesses → 𝐑𝐞𝐬𝐭𝐨𝐂𝐨𝐦𝐦𝐚𝐧𝐝: restaurant SaaS with AI demand forecasting that takes the guesswork out of inventory → 𝐒𝐞𝐥𝐥𝐫𝐆𝐫𝐢𝐝: multi-tenant marketplace built to onboard vendors without things breaking → 𝐒𝐦𝐚𝐫𝐭 𝐓𝐫𝐚𝐢𝐧𝐞𝐫 𝐋𝐌𝐒: learning platform with AI analytics and auto-generated certificates → 𝐑𝐀𝐆 𝐂𝐫𝐲𝐩𝐭𝐨 𝐑𝐞𝐬𝐞𝐚𝐫𝐜𝐡 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦: pulls clear answers out of scattered market data 𝐇𝐨𝐰 𝐈 𝐖𝐨𝐫𝐤 → Scope first. No code until we're aligned on exactly what we're building → Architecture doc before a single line is written → Weekly staging demos. Working software you can click, not status updates → Handoff-ready, TypeScript-strict code your next dev will thank me for 📩 Tell me what you're building: the idea, your timeline, your budget. I'll walk you through exactly how I'd approach it. I usually reply within a few hours.

🟢 100+ successful projects | Top Rated Plus | 10+ years of experience 🟢 I help businesses collect reliable data, automate workflows, integrate APIs, and build AI-powered systems that reduce manual work and turn messy processes into clean, scalable, production-ready solutions. I’m Sergii, Senior Automation & AI Engineer at DataOx. For 10+ years, we’ve helped startups, small businesses, and growing teams build custom data extraction systems, workflow automation tools, API integrations, backend platforms, data pipelines, and practical AI automation solutions. What I can help you with: • Web scraping & data extraction Custom scraping systems for websites, marketplaces, directories, eCommerce platforms, real estate platforms, job boards, online portals, social networks, and other public or structured data sources. • Data processing & data pipelines Cleaning, structuring, normalizing, transforming, and preparing data for reporting, analytics, dashboards, CRMs, databases, Google Sheets, Airtable, internal tools, or AI systems. • Workflow automation & browser automation Automation systems that replace repetitive manual work, connect tools, handle business logic, run scheduled processes, and reduce operational workload over time. • API integration & backend systems REST API integrations, third-party API connections, custom API development, backend logic, database workflows, admin panels, internal platforms, and scalable business systems. • AI automation & AI-powered tools AI agents, ChatGPT / OpenAI API integration, Claude, Gemini, AI-driven workflows, document processing, natural language interfaces, AI-generated reports, classification, extraction, and decision-making support systems. • Existing system improvement Bug fixing, refactoring, stabilization, performance improvements, error handling, documentation, feature enhancements, and long-term support for existing automation, scraping, backend, or AI systems. Typical projects we build: • Web scraping and data extraction platforms • Price monitoring and competitor monitoring tools • Lead generation and contact data collection systems • Workflow automation and process automation tools • API integrations between CRMs, databases, SaaS tools, and internal systems • AI-powered assistants, AI agents, and business automation tools • Document parsing, classification, and reporting systems • Data pipelines, ETL processes, and structured datasets • Dashboards, admin panels, and backend web applications • Google Sheets, Airtable, Telegram bot, and email automation workflows Why clients work with us: • Strong experience with similar projects • Clear understanding of technical requirements and business goals • Reliable communication and structured project delivery • Clean, maintainable, and scalable architecture • Strong problem-solving approach • Ability to handle changing requirements and real-world edge cases • Production-ready solutions with error handling and clear documentation • Long-term support after the first version is delivered Tech stack and tools: Python, Java, FastAPI, Django, Spring Boot, PostgreSQL, MySQL, MongoDB, REST APIs, Selenium, Playwright, Scrapy, BeautifulSoup, Pandas, ETL pipelines, cloud services, OpenAI API, ChatGPT, Claude, Gemini, Google Sheets API, Airtable API, CRM APIs, payment APIs, and custom backend systems. I work best with clients who need more than just a quick script. If you need an experienced developer or technical partner who can understand the goal, clarify the scope, build a reliable solution, and support it over time, I can help. Send me a message with your project details, data sources, tools, API requirements, or current workflow, and I’ll help you define the best technical approach.