Hire the Best Knoahsoft Harmony Specialists

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
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Kerlos G.

Cairo, Egypt

$15/hr
4.9
28 jobs

I build production systems where AI actually has to work — not demo it. Over 8,800+ hours on Upwork (100% JSS, Top Rated Plus), I've shipped Claude and OpenAI integrations, MCP servers connecting agents to live business data, and automation pipelines that run unattended in production — handling real users and real financial data, not sandbox traffic. ✅ AI in production — Claude & OpenAI integrated into live SaaS handling real load, plus MCP server development connecting agents to real systems ✅ Automation that doesn't silently fail — n8n & Inngest pipelines with durable execution and idempotent step writes ✅ Built for scale — Kubernetes-deployed apps maintained across 2,400+ production hours. ✅ FinTech-grade reliability — APIs and pipelines for an alternative-assets platform where correctness isn't optional ✅ End-to-end ownership — Postgres schema to Docker/Kubernetes deploy to the pager going off at 3am Core stack: TypeScript, Next.js, NestJS, PostgreSQL, Redis, Docker, Kubernetes, AWS, Claude API, LangGraph, RAG/pgvector, MCP, n8n, Inngest, Stripe/Stripe Connect, Prisma, Supabase, Shopify, Go, Kafka, Terraform. If you're integrating AI into an existing system, building an MCP server, automating a manual workflow, or scaling a SaaS product without breaking what already works — send me a message with what you're building.

  • TypeScript
  • Node.js
  • React
  • NestJS
  • Next.js
  • Twilio API
  • API Integration
  • PostgreSQL
  • Docker
  • Redis
  • Stripe API
  • Kubernetes
  • GraphQL
  • Claude
  • LangChain
  • Supabase
  • Firebase
  • Apache Kafka
  • Websockets
  • AI Agent Development
Jose L.

Goa, Philippines

$6/hr
5.0
6 jobs

Hey partner! Let go of the menial tasks below which are holding you back from growing your business. ⚡Data Entry ⚡Emails/Emails Management ⚡Processing ⚡Executive Assistant ⚡Leads ⚡Customer Service ⚡E- Commerce ⚡Basic Accounting ⚡Administrative tasks What I bring: ✅ Customer Support (Email, Chat, Calls) – fast, clear, and human ✅ E-commerce Operations – Shopify, order management, refunds, disputes ✅ Financial Operations – AP, P2P, invoice processing, Concur ✅ Tools – Zendesk, Shopify, CRM systems ✅ Performance – 99% SLA | High-volume ticket & invoice handling ✅ Process Improvement – spotting issues, reducing backlogs, improving workflows I don’t just complete tasks. I take ownership, solve problems, and look for ways to improve how things are done. Let's talk how can I support you, partner? 📧

  • Virtual Assistance
  • Accounting Basics
  • Invoicing
  • Administrative Support
  • Customer Service
  • Executive Support
  • Administrate
  • Customer Support
  • Shopify
  • Accounts Payable
  • Accounts Receivable
  • Email Management
Mukela K.

Lusaka, Zambia

$15/hr
4.7
24 jobs

I'm a full stack developer specializing in React, Node.js, and TypeScript. I build production web applications that handle payments, user data, complex workflows, fintech platforms, admin dashboards, SaaS products, and AI-powered automation tools. As a full stack developer, I've shipped 20+ production applications for clients across the UK, Australia, South Korea, Hong Kong, Netherlands, and Zambia. My full stack development work includes Stripe payment systems processing automated payouts, admin panels managing thousands of users across multiple roles, real-time dashboards with WebSocket data feeds, mobile money integrations for African markets (MTN, Airtel, Zamtel), and AI features using OpenAI and Claude APIs. Most of my full stack developer projects involve taking a business idea or existing codebase and turning it into something that works at scale. I handle both frontend and backend development, building the user interface, designing the API architecture, setting up the database, and deploying to production. Clean architecture, documented code, and systems that don't break when you scale. What I work with most: Frontend: React, Next.js, TypeScript, Tailwind CSS, Zustand, Framer Motion Backend: Node.js, Express, Supabase Edge Functions, REST APIs, WebSockets Databases: PostgreSQL (Prisma), MySQL, MongoDB, Redis Payments: Stripe (Connect, Webhooks, PaymentIntents, Subscriptions), Mobile Money (MTN, Airtel, Zamtel) AI Integration: OpenAI GPT-4o, Anthropic Claude API, custom automation workflows Cloud & Deployment: AWS, Netlify, Railway, Vercel, DigitalOcean Industries I've worked in: As a full stack developer, I've built applications across fintech, healthcare, education, transportation, SaaS, e-commerce, and marketing automation. How I work: I handle projects end-to-end from architecture decisions to deployment. I work solo on most builds, but I also co-founded Fluxium Agency, which means if your project needs to accelerate or something unexpected comes up, I can bring in additional developers without missing a beat. You always deal with me directly no middlemen, no handoffs. If your project involves building a web application, integrating payments, setting up admin dashboards, or connecting APIs send me a message. I'll be honest about whether I'm the right fit.

  • JavaScript
  • Node.js
  • MongoDB
  • Python
  • RESTful API
  • Database Design
  • Git
  • Microsoft Azure
  • AWS Glue
  • ESP8266
  • Data Engineering
  • ETL Pipeline
  • System Analysis
  • React Native
  • Full-Stack Development
Silvana A.

kingston 19, Jamaica

$16/hr
4.8
45 jobs

Good Day. (originally from PERU) I am a hard working individual, always have a positive attitude no matter the circumstances and always willing to learn more. I speak, write and read 4 different languages English, Spanish, Dutch & Papiamento. My skills are: Data Entry, Web Research, Data Scraping, Logistics Handles challenges well and able to work under pressure Team player Accounting Receptionist Duties Secretarial Duties Customer service and support Chat support Trello, Slack, Asana Xero QB, Moneybird, Basecone, Twinfield, Zoho books, Wave Accounting

  • Microsoft Excel
  • Wave Accounting
  • Data Entry
  • Data Scraping
  • Microsoft Word
  • Bookkeeping
  • Castilian Spanish
  • Zoho CRM
  • Trello
  • English
  • Online Chat Support
  • Email Support
Erneida F.

Pasig City, Philippines

$10/hr
5.0
9 jobs

Looking for a seasoned Ecommerce Support Specialist who can handle high volume tickets, manage team operations, and turn upset customers into brand advocates? With 9+ years specializing in DTC ecommerce (and a background supporting Fortune 500 consumer brands), I bring a blend of front-line customer support, team leadership, and quality assurance to fast-growing online stores. ⚡ What I Bring to Your Store: • Front-Line & Escalation CS: Expertly handling complex email tickets, including order tracking, missing/damaged items, refunds, exchanges, and product inquiries. • Team Leadership & Coaching: Driving team SLA compliance, performing ticket QA reviews, coaching agents for peak performance. • Subscription & Logistics Management: Deep hands-on experience managing recurring orders, pauses, cancellations, and coordinating directly with 3PL/fulfillment centers. • Process Optimization: Identifying recurring customer pain points to improve workflows, help centers, and CSAT scores. 🛠 Technical Toolkit: • Ecommerce & Subscriptions: Shopify | Shopify Plus | Recharge | ShipStation | 3PL Systems • Helpdesk & CRM: Zendesk | Gorgias | Help Scout | Richpanel | Medallia • Operations: Slack | Google Workspace | MS Office 🌟 Experience Highlights: • Ecommerce Customer Support Team Lead (2020–2026): Led daily remote support operations for a Fortune 500 consumer brand while managing escalated customer cases and team QA. • Ecommerce CS Specialist (2017–2020): Handled end-to-end post-purchase email support for Fortune 500 consumer brand across Shopify, Recharge, and ShipStation. • 5+ Years Dedicated QA: Built robust quality frameworks and calibration systems to ensure top-notch service consistency. Whether you need a senior support specialist to clear your ticket queue or an experienced team lead to scale your customer support team, I'm ready to jump in.

  • Shopify
  • Ecommerce Order Fulfillment
  • Email Support
  • ShipStation
  • Ecommerce
  • WooCommerce
  • Help Scout
  • Customer Service
  • Data Entry
  • Medallia
  • Slack
  • Data Collection
  • Administrative Support
  • Lead Generation
  • BPO Call Center
Tsvetan T.

Sofia, Bulgaria

$25/hr
5.0
3 jobs

I’m a Senior Full-Stack Developer and technical partner with 12+ years of professional software development experience, helping businesses turn complex ideas and inefficient processes into reliable, scalable digital products. I work across the entire product lifecycle - from understanding the business problem and defining the right technical approach to UX, development, integrations, deployment, optimization, and ongoing improvements. My focus is not simply writing code. I build systems that save time, reduce manual work, improve customer experience, and help businesses grow. What I can help you build Custom Web Applications: Dashboards, SaaS products, customer portals, internal platforms, and business applications. AI & Automation: AI assistants, LLM-powered workflows, RAG systems, document processing, classification, summarization, and intelligent automation. Business Software: Internal tools, administration systems, reporting platforms, workflow management, and operational software. CRM & Integrations: Custom CRM systems, APIs, third-party integrations, payment systems, data synchronization, and migrations. High-Performance Websites: Corporate websites, e-commerce, landing pages, and conversion-focused experiences. SEO & Performance Optimization: Core Web Vitals, technical SEO, analytics, page speed, accessibility, and conversion optimization My technical background: I work across both front-end and back-end development, including: JavaScript / TypeScript • Next.js • React • Node.js • APIs • PostgreSQL • SQL • AI/LLM integrations • RAG • REST APIs • Third-party integrations • Automation • Git • Cloud deployment I’m comfortable taking ownership of the complete system, including architecture, database design, APIs, user interfaces, integrations, deployment, performance, and maintenance. AI & Automation I build practical AI solutions that integrate directly into real business workflows rather than AI demos that never reach production. Examples include systems that can: Analyze and classify large amounts of text Extract information from documents Search private knowledge using RAG Summarize and organize information Detect intent, sentiment, topics, and patterns Automate repetitive operational tasks Connect AI models with existing business tools and APIs One recent product I built analyzes large volumes of YouTube audience comments and uses AI to identify sentiment, intent, buying signals, objections, complaints, topics, and content opportunities. The platform turns that information into prioritized, evidence-backed actions using Next.js, TypeScript, PostgreSQL, AI analysis, and the YouTube API. How I work: I prefer clear communication and practical solutions. My process is straightforward: Understand the problem → Define the solution → Build → Test → Launch → Improve You won’t need to arrive with a detailed technical specification. Tell me what your business is trying to accomplish, what is currently slowing you down, and what a successful result should look like. I can help determine the best technical approach from there. Why clients work with me: 12+ years of professional development experience Full-stack expertise - from interface to database and infrastructure Strong business and product thinking Direct communication with the person actually building your product Experience with both existing systems and greenfield projects Comfortable working independently and taking ownership Focus on maintainability and long-term business value Experience supporting businesses and internationally recognized brands I’ve worked across projects involving brands and organizations including Schneider Electric, Mondelez, Mattel, MSD, BFGoodrich, and growing businesses across different industries. If you need a developer who can do more than complete tickets - someone who can understand the bigger picture, recommend the right approach, and take responsibility for delivering the solution-send me a message and tell me what you’re trying to build or improve. I’ll help you turn it into a clear technical plan.

  • JavaScript
  • Java
  • Knockout.js
  • Angular 5
  • Android
  • CSS
  • PHP
  • PayPal Development
  • Angular Material
  • WildFly
  • Node.js
  • React
  • Next.js
  • MongoDB

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