Hire the Best Invoice Processing Freelancers
in the United Kingdom

Hi, I’m Kris, a reliable Virtual Assistant from the UK with experience supporting business admin, invoicing, and online operations. I currently assist a UK business with invoice management and financial record organisation, handling around 80–100 invoices per month. My responsibilities include updating spreadsheets, organising files, tracking payments, and keeping records accurate and easy to access. I also have previous experience in customer service, office administration, and online teaching, giving me strong communication skills and attention to detail. I can help you with: • Invoice processing & organisation • Data entry & admin support • Google Sheets & Excel tracking • File management (Google Drive) • Online research & general VA tasks • Keeping records organised and up to date I’m reliable, detail-oriented, and easy to work with. I understand the importance of accuracy, clear communication, and meeting deadlines. Happy to start with a small task or trial. Let’s work together.

AI-powered document extraction, OCR and scraping is my core specialization. You are not paying me to experiment; you are paying for quick, reliable execution from an engineer who knows this solution space inside and out. While I have a broad background in AI (Master's from King's College London, 5+ years LLM development), my niche is turning messy, unstructured data into clean, validated databases. Why Work With Me? Many developers try to force outdated techniques onto strict data extraction problems, leading to hallucinations, broken schemas, and costly architectural redos. I stay up to date on all modern data extraction literature. I know the pros and cons of every method, from modern vision models for implicit table relationships to custom OCR fallbacks. Because I know the pitfalls of document extraction and web scraping before we even write the first line of code, I can tailor the exact right architecture for your solution from day one. No guessing. No structural redos. Just fast, production-ready execution. Experience: I have built production-grade extraction pipelines and automated scraping architectures across multiple complex domains: - Financial & Invoicing: Engineered invoice extraction pipelines achieving 99%+ accuracy across highly varied layouts, mapping dates, amounts, VAT, and line items. - Procurement & Tenders: Processed 200+ page Brazilian tender documents, identifying and extracting only specific supplier items and complex split tables from hundreds of pages of mixed content. - Sports & Large-Scale Data: Currently building a centralized database of global triathlon results, requiring massive-scale web scraping and data extraction across thousands of poorly formatted, highly variable PDFs. - Legal & Regulatory: Built an AI extraction pipeline using daily cron jobs to scrape government websites, monitor policy updates, version new documents, extract structured changes using AI, and alert affected users. Beyond Extraction: Putting Your Data to Work: Getting the data is only half the battle. I also build the systems that make your newly structured data actionable: - CRM Integrations & Data Enrichment: Automatically routing validated extraction data (like invoice details or scraped leads) directly into Salesforce, HubSpot, or custom databases to enrich your existing records. - AI Chatbots & Knowledge Bases: Building conversational agents that allow your team or your customers to "chat" directly with your extracted document archives, retrieving precise answers with source citations. - Semantic Search Engines: Transforming thousands of static PDFs into fully searchable internal databases using NLP and vector embeddings. - Automated Workflows: Setting up trigger-based logic, such as automatically generating summary reports or flagging anomalies when new documents are scraped. My Methodology: - Gold Standard Datasets: I create a benchmark dataset from day one to prove accuracy across your file types before deployment. This is crucial! - Robust Validation: I build systems with strict confidence scoring, consistency checks, and source citations to catch extraction errors before they hit your database. - Scalable Architecture: Clean, modular, queue-based systems that handle edge cases seamlessly. Core Competencies & Tech Stack: Document Processing: AI PDF Parsing, Modern OCR (Tesseract, AWS Textract, Google Doc AI), Vision Models, Layout Analysis. AI & LLMs: Structured JSON Extraction, RAG, Chatbot Development, Prompt Engineering, Hallucination Mitigation. Web Scraping: Python, FastAPI, Secure Portal Automation, Anti-Bot Bypassing, Proxy Management, Change Detection. Data & Infrastructure: MySQL, Parquet, Docker, AWS, Laravel (APIs/Queues), API Integrations, CRM Pipelines. If you have a complex scraping, document extraction, or AI integration problem, send me a message with a sample document or target website. Let's build a system that works on the first try.

Most GoHighLevel and HubSpot systems are built to function, not to convert. Leads fall through the cracks, follow-ups stop too early, attribution breaks, and sales opportunities get lost. I help agencies, real estate professionals, coaches, consultants, healthcare businesses, roofing companies, and service-based businesses build high-performing HubSpot & GoHighLevel CRM systems that automate lead management, appointment booking, customer follow-up, sales pipelines, lead nurturing, and marketing operations from first touchpoint to closed client. My approach goes beyond basic workflow setup. I build scalable, conversion-focused HubSpot/GoHighLevel infrastructures designed to improve lead response speed, streamline operations, eliminate manual tasks, optimize customer journeys, and create reliable automation systems businesses can actually scale with. Core GoHighLevel Services CRM Automation & Workflow Systems ✅ GoHighLevel CRM Setup & Optimization ✅ Workflow Automation & Workflow Logic ✅ Automation Audits, Troubleshooting & Cleanup ✅ Pipeline Management & Opportunity Tracking ✅ Lead Routing & Contact Segmentation ✅ Tags, Smart Lists & Custom Fields ✅ Customer Journey Automation ✅ CRM Cleanup & System Organization ✅ Dynamic Automations & Conditional Logic ✅ Trigger Setup & Workflow Branching ✅ Multi-Location CRM Systems ✅ Sub-Account Setup & SaaS Mode ✅ Snapshot Creation & Cloneable Systems AI Automations & Advanced Integrations ✅ AI Chatbots & AI Assistants ✅ AI Voice Agent Integrations ✅ AI Lead Qualification Systems ✅ AI Booking Automation ✅ OpenAI / ChatGPT Integrations ✅ Vapi AI & Retell AI Setup ✅ Zapier & Make Automations ✅ API & Webhook Integrations ✅ Stripe Integrations ✅ Twilio SMS Infrastructure ✅ WooCommerce Integrations ✅ Facebook Lead Form Integrations ✅ Google Ads & Meta Ads Integrations Funnels, Follow-Up & Lead Generation ✅ Funnel Design & Funnel Optimization ✅ High-Converting Landing Pages ✅ Lead Capture Systems ✅ Appointment Booking Workflows ✅ Automated Follow-Up Campaigns ✅ Lead Nurturing Sequences ✅ Email & SMS Automation ✅ Missed Call Text Back Systems ✅ Reactivation Campaigns ✅ Review & Reputation Automation ✅ Client Onboarding Workflows ✅ Customer Retention Systems Technical Configuration & Deliverability ✅ A2P 10DLC Registration ✅ SMTP, SPF, DKIM & DMARC Configuration ✅ Email Deliverability Optimization ✅ Domain & DNS Setup ✅ CRM Migration & System Architecture ✅ WordPress Integrations & Website Design ✅ Twilio A2P 10DLC Brand & Campaign Registration ✅ SMS Compliance & Carrier Requirement Review ✅ Fixing A2P Campaign Rejections ✅ SMS Deliverability Troubleshooting ✅ Twilio Messaging Services Setup ✅ Twilio API Integration ✅ Two-Way SMS Configuration ✅ GoHighLevel (GHL) SMS Integration ✅ RingCentral, Grasshopper & Dialpad A2P Registration ✅ n8n Workflow Automation ✅ AI-Powered Messaging Automation Industries I Commonly Work With ✅ Marketing Agencies ✅ Roofing Companies ✅ Real Estate Professionals & Realtors ✅ Healthcare & Mental Health Practices ✅ Coaches & Consultants ✅ Med Spas & Clinics ✅ Ecommerce Businesses ✅ Local Service Businesses ✅ Appointment-Based Businesses ✅ Commercial Real Estate Why Businesses Hire Me ✅ Conversion-focused automation systems ✅ Advanced understanding of workflows, APIs & integrations ✅ Reliable communication & fast implementation ✅ Full workflow testing before delivery ✅ Long-term optimization and support Key Skills: GoHighLevel Automation Expert | GoHighLevel Sales Funnel Expert | GoHighLevel (GHL) Subaccount Setup | GoHighLevel Website Design | GoHighLevel Landing Page Design | GoHighLevel Integrations | GoHighLevel Workflow Design | GoHighLevel Snapshot Creation and Setup | GoHighLevel CRM Software | GoHighLevel Email Automation | GoHighLevel Email Campaign Setup | GHL AI Agents | GoHighLevel Expert | GoHighLevel Funnel | GHL Website | GoHighLevel SEO | Klaviyo Email Marketing | Email Automation | Email List Segmentation | Email List Growth | Email Marketing Strategy | Email Deliverability | Email Marketing Analysis | Email Marketing Consulting | Email Marketing Optimization | Email Marketing Automation Tools | Email Marketing Software | Twilio | Twilio A2P 10DLC | SMS Compliance | Messaging Automation | Twilio API | GoHighLevel | n8n | API Integration | RingCentral | Dialpad | Grasshopper | SMS Deliverability | Workflow Automation wilio Expert | A2P 10DLC Registration | AI Expert | CRM Setup | GHL Snapshot | Phone System | Gohighlevel Voice AI | API Integration | Marketing | Twilio Setup | WhatsApp Business API | Gohighlevel Set up | WordPress Website Design | Automation | Interactive Voice Response (IVR) Setup | TCR | SMS Marketer | Email Marketer | Pipeline | Sales Funnel Design | Landing Page Designer | Meta Ads | SMS Compliance TCPA Opt-in Setup | GHL AI | Claude Code | Claude AI | Twilio SMS Compliance | TCR Registration Specialist | SMS Marketing & Automation.

Hi, I'm Valentina. I am a finance and administration professional with over 7 years of experience supporting UK businesses with Accounts Payable, invoice processing, supplier reconciliations, data management, and financial administration. Throughout my career, I have worked with Sage 50, Xero, Lightyear, and Microsoft Dynamics Business Central, handling high volumes of invoices, maintaining accurate financial records, and ensuring smooth day-to-day financial operations. I can help with: Invoice processing and data entry Accounts Payable administration Supplier statement reconciliations Excel and Google Sheets management Data cleansing and formatting Purchase Order administration Financial data migration projects Administrative support I am detail-oriented, reliable, and comfortable working independently to meet deadlines. In addition to my administrative background, I have previous experience in graphic design and a genuine passion for photography. I'm also happy to assist with simple creative tasks such as basic photo assignments, product photography, image selection, Canva editing, and other straightforward design-related projects. Let's discuss how I can support your project.

A top 3% Upwork developer — and your site is in expert hands. When you work with me, you keep full ownership of everything I build. I am a full stack developer, SaaS developer, and dashboard developer in the UK. As a full stack developer I own the entire stack — PostgreSQL design, Node.js and Nest.js backend, React and Next.js frontend, REST API integrations, Stripe payments, and Vercel deployment. Need a full stack developer, SaaS developer, or dashboard developer who owns the technical side end to end? Let's talk. My recent full stack developer work includes a SaaS platform for trades businesses — a Next.js app with job management, client records, quoting, and role-based access — and a B2B admin dashboard on PostgreSQL, Node.js, and React that a team of 20 depends on every day. SaaS developer. Multi-tenant. Production-ready. As a SaaS developer I delivered a multi-tenant SaaS starter on Next.js with Stripe subscriptions, PostgreSQL via Neon, role-based access, billing portal, and team invites — fully documented, repo transferred on handover. I led a platform rebuild from legacy PHP and WordPress to a modern Next.js and Nest.js architecture — 40% lift in user engagement post-launch. I also build multilingual B2B platforms — Next.js with Sanity CMS, localised content and routing, editorial workflows non-technical teams actually use. Backend developer. Nest.js. PostgreSQL. Data pipelines. As a backend developer I build production Nest.js and Node.js APIs on PostgreSQL with TypeScript end to end. Recent backend work: a Nest.js and PostgreSQL backend for a raffle SaaS platform — JWT authentication, OAuth providers, password recovery, and a clean REST API layer for a Next.js and React frontend. I also engineered a web scraping and data aggregation engine: Nest.js cron pipelines with adapters for multiple third-party sites, anomaly detection, stale-data cleanup, and webhook alerting — thousands of records refreshed daily on Railway, Prisma, and Neon. Every endpoint authenticated, every role enforced, every query isolation-aware. Security audit. Supabase RLS. Multi-tenant isolation. As a technical consultant I run pre-launch security audits for SaaS founders — the review that must happen before real customer data goes live. My audits cover Supabase Row Level Security (RLS), multi-tenant isolation, PostgreSQL policy design, authentication flows, and exposed API keys in client code. I've audited a multi-tenant property maintenance SaaS on Supabase, and on another platform found RLS policies that lived only in discarded migrations, never applied to the database — the silent data leak an audit catches before a breach. If you're a SaaS founder on Supabase, Next.js, or PostgreSQL and aren't certain your tenant data is isolated, that's the audit I do. Dashboard developer. AI features. Data that changes decisions. As a dashboard developer with a KendoReact commercial licence I build enterprise-grade interfaces standard React developers can't replicate — advanced data grids, real-time charts, complex forms under load. My portfolio includes a marketing analytics dashboard with AI insights that cut campaign review time by 60% for a British agency, and a SaaS analytics dashboard with Chart.js and PDF export that replaced weekly manual reporting. I integrate LLM APIs (Anthropic Claude, OpenAI) into production apps — AI insights, content pipelines, and matching features, keys secured server-side. Integrations. Authentication. Infrastructure. OAuth integration and API authentication — credential flows for Google, GitHub, and custom providers using NextAuth, Nest.js, and JWT. Google Tag Manager with GA4 and Meta Pixel across complex Next.js apps, GDPR cookie consent and Consent Mode included. Transactional email on Resend and Brevo, plus Next.js blog and CMS setup with Sanity Studio. Stripe. Payments. Automation. I built a Stripe internal payment interface with role-based access on Next.js — PaymentIntent flow, full audit log, zero card data stored. I delivered Stripe subscription billing with webhooks handling upgrades, downgrades, and failed payment recovery. I wire Stripe with Make, GoHighLevel, and Google Sheets so every transaction triggers the right email, CRM tag, and notification. Technical consultant. Architecture. Audit. For non-technical founders my tech stack and architecture audit with written report shows what you have, what's broken, and what to build next — vendor selection, developer estimate review, security review, and a roadmap. As a Next.js performance specialist I improve Lighthouse and Core Web Vitals — measurable gains for users and search ranking. Next.js · React · Node.js · Nest.js · PostgreSQL · Supabase · TypeScript · JavaScript · REST API · Stripe · Kendo UI · Sanity · Prisma · Claude API · OpenAI · Make · GoHighLevel · Vercel · Railway · NextAuth · JWT · OAuth · RLS · Chart.js · GA4 · Meta Pixel

I take the repetitive back-office and data work off your plate — set up with automation, delivered by a managed team, and quality-checked before it reaches you. You get the result, not the overhead of finding, vetting, and managing offshore staff yourself. I'm an engineer by background, so I run this work the way an engineering team would — with tooling and automation where it helps — which makes it faster, more accurate, and cheaper to run over time. Every engagement is scoped, set up, and QA'd by me; you're never handed an unmanaged freelancer. What I handle: - Data entry, cleaning, de-duplication & CRM upkeep - Document & invoice processing - Research, list-building & data enrichment (on data you own) - E-commerce ops — product listings, catalogue & inventory - Inbox, calendar & general admin - Data prep & labelling for AI / automation projects Done safely: I work as a processor on data you own, under an NDA, GDPR-aware — I never buy or sell data. **Ways to work:** - A small, fixed-scope task first, so you can judge the quality at zero risk - An ongoing pod — a few hours a day or full-time — that just handles it And because I build software too, when a manual process is finally worth automating for good, I can build that — turning your back-office spend into real systems. Tell me the one task eating the most time this week, and I'll show you exactly how I'd take it off your plate.