Hire the Best Serverless Developers
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Ihor V.

Lviv, Ukraine

$40/hr
5.0
3 jobs

I built the ad-operations platform behind 20,000+ Meta ad launches a month at a company doing $100M+ a year. I build that kind of system for founders and small teams: AI automation, internal tools, and production software on Node.js, React and AWS. Selected production work: - Automated video creative production for a 30-person design team producing 600+ assets daily, cutting per-creative editing time from 20–25 minutes to 5–7 with parallel batch processing. - Automated monthly invoicing for 200 people, eliminating 2 days of manual work per cycle. - Shipped and supported 70+ production automations across one company's operations. - Owned application development for a B2B SaaS that reached 30+ active brands in three months. Founders hire me to: - Replace spreadsheet-heavy operations and manual handoffs with production systems - Build internal tools that non-technical teams can actually operate - Launch an MVP that can evolve past the prototype stage - Integrate subscriptions, checkout, webhooks, or usage-based billing My approach is straightforward: identify the business outcome, cut the first release to the smallest valuable production slice, surface risks early, and deliver in demonstrable milestones. I work UTC+8, with daily overlap for European and APAC mornings and US calls in my evening. You get written end-of-day updates, so you always know where things stand. Send me your current process or product, the outcome you want, and your deadline. I'll come back with the smallest sensible first milestone, the assumptions I'm making, and the risks I see. Core stack: TypeScript · Node.js · NestJS · React · Next.js · PostgreSQL · AWS Serverless · Stripe AI & automation: Claude / OpenAI APIs · OpenRouter · Fal.ai · n8n · Meta Ads API

  • Serverless Computing
  • Amazon Web Services
  • Marketing Automation
  • Next.js
  • Node.js
  • React
  • Stripe
  • Automation
  • TypeScript
  • Web Development
  • AI Development
  • Claude
  • API Integration
  • AWS Lambda
  • Payment Gateway Integration
  • Full-Stack Development
  • AI Agent Development
  • Supabase
  • MarTech
Maksym K.

Odessa, Ukraine

$20/hr
5.0
10 jobs

I build SaaS products and Chrome extensions using Next.js, Supabase, TypeScript, and React. Most of the products I work on start as MVPs but are expected to grow, so I think about authentication, billing, permissions, and maintainability from the beginning. I usually work with founders who already have a product idea and need someone who can take ownership of the technical side of implementation. That might mean building a system from scratch, improving an existing codebase, or cleaning up a prototype that has become difficult to maintain. Some of the work I’ve done recently: - Building full-stack SaaS applications with authentication, file uploads, Stripe billing, dashboards, and AI-powered functionality - Developing Chrome extensions connected to SaaS backends through secure authentication, background processing, and data synchronization - Refactoring large Next.js applications to improve SEO, SSR, caching strategies, and long-term maintainability - Designing Supabase systems involving Auth, PostgreSQL, Row Level Security (RLS), Storage, and server-side logic - Improving search and filtering performance through query optimization and server-side rendering - Integrating third-party services such as Stripe, OpenAI, and Podio into existing products Technologies I work with regularly include Next.js, React, TypeScript, Supabase, PostgreSQL, Stripe, Vercel, OpenAI API, Chrome Extensions (Manifest V3), REST APIs, serverless functions, SSR, caching strategies, and role-based access systems. If you're ready to hand off the technical heavy lifting and focus on growth, drop me a message and let's map out your roadmap.

  • SaaS
  • Supabase
  • Next.js
  • TypeScript
  • React
  • Node.js
  • Tailwind CSS
  • API
  • Web Application
  • REST API
  • JavaScript
  • PostgreSQL
  • Database Design
  • Serverless Stack
  • Web Development
  • Google Chrome Extension
  • Browser Extension
  • Vercel
  • Stripe
  • Minimum Viable Product
Roman S.

Lviv, Ukraine

$30/hr
4.9
128 jobs

As a WordPress developer and WooCommerce developer I build custom WooCommerce plugins, migrate WordPress sites off page builders, and run WordPress speed optimization - without breaking the revenue that depends on them. If your WooCommerce store is slow, stuck on Elementor, Divi, WPBakery or Crocoblock, or failing Core Web Vitals - that's the work I handle every day as a WordPress developer and WooCommerce developer. 10+ years as a WordPress WooCommerce developer - Top Rated, 100% Job Success - working on live WordPress and WooCommerce sites that can't afford downtime. WOOCOMMERCE DEVELOPMENT Custom WooCommerce plugin development in PHP. As a WordPress plugin developer and WooCommerce plugin developer: custom hooks and filters, admin tooling, REST API endpoints, WooCommerce checkout customization, custom checkout fields, payment gateway troubleshooting (Stripe, PayPal), product catalog and inventory logic, supplier price and stock sync, and third-party API integrations (CRM, ERP, shipping). I also handle WooCommerce Subscriptions, WooCommerce Bookings, memberships, product bundles, B2B and wholesale pricing, and multilingual WooCommerce stores (WPML). I build and maintain custom WordPress plugins inside proprietary codebases - not just off-the-shelf configuration. Git-based workflow, staging first, clean maintainable WooCommerce development. WORDPRESS MIGRATION WordPress migration, done without breaking things: I move sites off Elementor, Crocoblock (JetEngine, JetSmartFilters, JetMenu), Divi and WPBakery page builders onto clean, native WordPress - Gutenberg, Full Site Editing (FSE), theme.json, template parts and reusable patterns. Elementor to Gutenberg migration, page builder to block theme rebuilds, classic theme to FSE, and website migration between hosts with SEO preserved (301 redirects, meta, structured data). I move custom post types, ACF and JetEngine fields, taxonomies and relationships to a native content model, and rebuild faceted filters and search (FacetWP), mega menus, TablePress tables and multilingual setups (WPML, Polylang) - including Elementor WooCommerce sites. As a WordPress theme developer I rebuild the design as a native block theme: lighter, faster, easier to maintain, and API-ready if you ever go headless. WORDPRESS SPEED OPTIMIZATION WordPress speed optimization and WooCommerce speed optimization: Core Web Vitals (LCP, INP, CLS), PageSpeed Insights and GTmetrix scores, page speed optimization, TTFB reduction, Redis object caching, edge and CDN caching (Cloudflare, AWS CloudFront), WP Rocket and LiteSpeed configuration, image optimization and WebP, database and slow-query optimization, plugin bloat audit. I find and fix the real bottleneck - server, database, WordPress theme or plugins - not just install another cache plugin. AI SEARCH AND AUTOMATION Where AI genuinely pays off, I add it: semantic search and recommendations across your WordPress and WooCommerce content, AI sales-agent chatbots, and automation of repetitive store operations - on your own infrastructure, with an API-ready content model that keeps a headless future open. RECENT WORK - Built a custom WooCommerce Dokan plugin (price-decay engine) - "flawless architecture, clean, modular and optimised for performance." - Rebuilt a trading-education platform (~15M monthly visits) from a page builder to a custom WordPress theme, as team lead of 4 developers. WordPress speed optimization took PageSpeed from 25-35 to 95-100. - "Page performance is now 100/99 (desktop/mobile)" - a WordPress and WooCommerce Page Speed Optimization client. - Built a custom AI sales-agent WooCommerce plugin for a live store: product search, cart actions, admin UI, REST API, LLM integration. - Two WooCommerce stores on one server: homepage 2.01s to 0.07s, 95% of traffic answered before it reached the origin. HOW I WORK My rule: a live WordPress site is treated as live. Staging first, clear scope and milestones, and you see changes before they go near production. Honest estimates, updates every couple of days - one-off projects or ongoing maintenance and support. WHO THIS IS FOR WooCommerce store owners and ecommerce teams who want their store faster and more dependable. Companies moving off Elementor, Divi or Crocoblock to a clean, native WordPress setup, built by a WordPress developer who knows WooCommerce inside out - from WooCommerce website development to custom plugins. Skills: WordPress, WooCommerce, WordPress migration, WordPress speed optimization, Core Web Vitals, PHP, MySQL, REST API, custom WordPress plugin development, Elementor, Gutenberg, Full Site Editing, ACF, FacetWP, WPML, WooCommerce Subscriptions, WP Rocket, Redis, Cloudflare, WordPress theme development, WordPress theme customization, Github. Planning a WordPress migration, custom WooCommerce development, or a serious WordPress speed optimization pass? Send your site and a couple of lines about the situation. What's slowing your WooCommerce store down right now?

  • WordPress
  • WordPress Development
  • Plugin Development
  • Theme Development
  • WooCommerce
  • Page Speed Optimization
  • Website Performance Optimization
  • Cloudflare
  • WordPress Plugin
  • Elementor
  • Website Optimization
  • Theme Customization
  • CMS Development
  • Website Migration
  • Gutenberg Editor
  • Performance Optimization
  • WordPress Website
  • WordPress Optimization
  • WordPress Migration
  • WordPress Bug Fix
Ella S.

Odessa, Ukraine

$40/hr
5.0
455 jobs

I'm a UI/UX Product Designer who ships, not just designs. 400+ projects, $500K+ earned, Top Rated Plus - your product can be live this week, not just as a Figma file! 🚀 I design in Figma, then build the real thing myself with Claude Code, Cursor and Framer. SaaS dashboards, web app design, B2B platforms, landing pages - built and deployed, not just clickable prototypes. You skip the design-to-dev handoff entirely or I hand off clean documentation if your team takes it from there Trusted by Creednz ($7M seed, Blumberg Capital), Dopavision (€14.7M, Novartis), and Americanflat (Target, Amazon, Wayfair) - see how below 👇 ‣ Why this works for your product: Most UI/UX designers stop at wireframes and hand you to a developer. I run the whole flow as a product designer: UX research, user flows, information architecture, wireframing, high-fidelity UI in Figma, prototyping. Then AI-assisted development with Claude Code, Cursor and Framer. Projects that used to take months now ship in week SEO and GEO (generative engine optimization, so you show up in AI answers like ChatGPT and Perplexity) get built in from the first wireframe If you need a fast MVP or a landing page live this week, that's the whole point of working with me. If the timeline is tight, I can turn around a scoped, working solution fast ‣ What I design & buid: SaaS and B2B product design - dashboards, complex platforms, admin panels, from discovery through production-ready UI MVP design and development - landing pages and web apps built, not just designed. Figma to Claude Code, Cursor, Framer, or Figma Make, live fast Design systems in Figma - auto-layout, variables, component libraries, dev handoff docs for teams that build in-house Mobile app design (iOS and Android) and mobile UI UX for e-commerce - Shopify, Webflow, WordPress - when it's part of the same product AI-generated creative content - product photography, social content, and campaign imagery I generate and art-direct myself, reviewed and refined, not shipped raw out of a model Product audits - UX, UI, usability testing, accessibility (WCAG), SEO/GEO readiness, and AI-readiness reviews of your existing site or app. What's broken, what's costing you conversions, and what's blocking a faster AI-assisted rebuild, with a prioritized fix list, not just a slide deck ‣ Some achievements: 400+ projects completed & 100% Job Success Score Top Rated Plus Clients across the US, DACH, Israel, the Gulf & Australia ‣ Tools: Figma, Figma Make, Claude Code, Cursor, Framer, Webflow, Shopify, WordPress ‣ How it works (pretty fast tbh): 1) Discovery call first 2) Scope and timeline in 24 hours 3) Milestone-based delivery 4) 2 revision rounds 5) Figma handoff with a Loom walkthrough on completion 6) Rush timelines accommodated when the project needs to move fast 📩 If you need a designer who ships product, not just files, let's talk ;) 📌 Available for retainers, pilot projects, and long-term partnerships!

  • User Interface Design
  • Product Design
  • UX & UI Design
  • UI/UX Prototyping
  • Website Audit
  • AI App Development
  • Landing Page Design
  • Conversion Rate Optimization
  • Framer
  • Webflow
  • Shopify
  • Mobile App Design
  • UX Research
  • UX Wireframe
  • Interaction Design
  • Responsive Design
  • Web Design
  • Ecommerce
  • Brand Identity & Guidelines
  • Usability Testing
Serhii A.

Vinnytsya, Ukraine

$30/hr
4.8
26 jobs

Full-Stack Development: - PHP (17 years) — Laravel, Doctrine, Bitrix/Bitrix24, WordPress - JavaScript / TypeScript (15 years) — Node.js, Vue.js, REACT - MySQL, HTML/CSS - REST API design, SaaS & Serverless architectures, Multi-tenant architecture - Redis, CDN, S3 Cloud & DevOps: - Linux - AWS: ECS, Lambda, API Gateway, RDS, S3, IAM - Terraform (Infrastructure as Code) - Docker & Podman — containerization, container-based deployments - Git, Jira, CI/CD, code review automation AI & Generative Pipelines: - AI Automation Engineering - LLM integration & prompt engineering: Claude (Anthropic API), Gemini, ChatGPT/Codex, GitHub Copilot - LoRA (machine learning), RAG - Stable Diffusion / SDXL: img2img pipelines, inpainting - Production image-generation workflows: two-stage compositing pipelines (Gemini-based interior visualization), hallucination mitigation, prompt branching by generation type - LLM-based multi-label classification systems (structured scoring, catalog tagging) - Computer vision: perceptual color analysis (CIELAB, ΔE), dimension estimation from photos, batch vision processing - AI upscaling workflows (Topaz Gigapixel AI) Testing & Quality: - PHPUnit/Pest, Vitest - Automated code review pipelines E-commerce: - Shopify app development & third-party integrations (shipping APIs) - WordPress / WooCommerce

  • MySQL
  • PHP
  • Doctrine ORM
  • Bitrix24
  • Laravel
Dmytro S.

Odesa, Ukraine

$30/hr
5.0
3 jobs

𝐖𝐚𝐧𝐭 𝐭𝐨 𝐠𝐨 𝐟𝐫𝐨𝐦 𝐢𝐝𝐞𝐚 𝐭𝐨 𝐥𝐚𝐮𝐧𝐜𝐡 𝐢𝐧 𝟐 𝐰𝐞𝐞𝐤𝐬? Less process theatre, more execution - that's the whole pitch. 🔥 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 "𝗦𝗧𝗔𝗥𝗧" for a 𝐅𝐑𝐄𝐄 𝟑𝟎-𝐦𝐢𝐧 technical audit - know exactly what you need before you spend a cent As a Full Web Stack Developer, I've shipped regulated FinTech platforms, SaaS products, and eCommerce builds across 15+ industries - GovTech to jewelry retail. Same team, same standard, every time. 🔥 𝐎𝐮𝐫 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ▪️ SaaS & MVP Development: React, Next.js, Node.js, NestJS, TypeScript, PostgreSQL, core Full Stack Developer SaaS stack ▪️ eCommerce Development: Shopify, WooCommerce, custom platforms, Full Stack Web Developer builds ▪️ Website & Brand Systems: WordPress, Laravel, UX/UI ▪️ CRM & Automation: HubSpot Certified, Zoho CRM, n8n/Make, SaaS Developer workflows ▪️ Performance Marketing & SEO: Google/Meta/TikTok Ads, SEO/AEO/GEO - certified partner ▪️ Marketing Analytics: GA4, GTM, Looker Studio, funnel & attribution dashboards, built for FinTech App reporting ▪️ AI & Data Engineering: predictive models, ML pipelines, risk-scoring, FinTech App Developer specialty ▪️ Project & Program Management: Jira, ClickUp, agile delivery, roadmap planning, running SaaS MVP builds ▪️ Infrastructure: AWS, Vercel, Stripe, Docker, hosting Full Stack Developer FinTech projects 🔥 𝐓𝐨𝐩 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: -- AutoGeld24: idea to live ad campaign in 3 weeks, 74 leads at €9 CPL -- Lemox | FinTech App: 2,035+ investors reached, 10.93% response rate, BaFin-regulated -- Wurth: 121% average quarterly KPI, 4 quarters straight 🔥 Trusted by: Würth, NAGA, Atlant 3D, Arima Genomics, PSM, Leverdata, Linki Got an idea or a brief? Either works - message us and we'll take it from there. Updated - September 2

  • Full-Stack Development
  • Node.js
  • JavaScript
  • React
  • Next.js
  • Mobile App Development
  • Flutter
  • Android App Development
  • TypeScript
  • iOS Development
  • React Native
  • PostgreSQL
  • Supabase
  • MongoDB
  • AI App Development
  • Firebase
  • MySQL
  • PHP
  • SaaS Development
  • Web Application

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