Technology & Programming Projects

Server management and WooCommerce specialist required

We are looking for someone to investigate an issue with our dedicated server. It seems to keep going down and some of the processes like catalog updates are causing it to overload. It runs 3 wordpress sites and is hosted on Ubuntu. If you have experience with problem solving on dedicated servers please place a bid. We are looking for someone UK based and with excellent availability for regular server monitoring and management. Please include on your bid your proposed hourly rate for ongoing tasks. Thanks

Shopify Developer needed

Are you a Shopify developer? We are looking for a freelancer to work with us on our medical store. The ideal candidate should be well-versed in Shopify's platform and have a strong understanding of e-commerce functionalities. Tasks may include theme customization, app integration, and troubleshooting. All requirements - Images - Budget attached Please answer all requirements questions with your proposal.

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Looking for experienced UI/UX Design

strategic thinker who can translate design objectives into intuitive, conversion-focused user experiences. You will work closely with leadership and product stakeholders to design scalable, user-centric interfaces that align with brand standards and performance goals. All project requirements - Budget - Communication attached Please answer all requirements questions with your proposal.

TDS LCD screen Arduino Project

'm a London designer looking for a quick hands-on assist on a beginner-level Arduino project. It's a total dissolved solids (TDS) meter—basically dips a probe in water, measures quality in PPM, and shows it live on a 16x2 LCD screen. Super straightforward: wire up a Gravity TDS sensor to Arduino (analog pin A1), connect an I2C LCD (A4/A5), add basic code from GravityTDS library. No soldering needed—just breadboard, jumpers, maybe temp compensation if you're keen.

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Need a chatting app like WhatsApp

I need an online app where user can see online doctors and talk to them and chat with them. Application must lock the mobile id as banking app does. Patients can have a login and doctors too. When they are logged in they can see live doctors and start chatting and voice calling with them. Call will be with 20 minutes timer and call recorded feature should be there. More details will be shared with selected candidates e must be in flutter.

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Build a Smart Rent & Bill Split MVP for UK Flatmates

We are looking for a Senior Full-Stack Architect / Developer to help us design and build an MVP for a smart rent and bill split platform aimed at UK flatmates and shared households. This project addresses a very real and growing problem in the UK: managing shared rent, utility bills, payment tracking, and reminders in a simple and modern way. We are not looking for a full production-ready platform at this stage. This is a Phase 1 MVP / prototype project for someone who can think at both the product and architecture level, while also being hands-on enough to deliver the first working version. Scope of Phase 1: • Simple user flow for adding flatmates/household members • Rent and bill splitting logic • Basic dashboard or summary view • Payment due dates/reminder flow • Clean, modern, mobile-friendly interface • Sensible backend architecture for future scaling What we need from you: • Strong full-stack architecture experience • Ability to define the right MVP scope without overengineering • Experience building SaaS, fintech-like flows, or household/payment tools is a plus • Clear communication and practical product thinking • Ability to recommend the best stack for speed, simplicity, and future growth Expected Deliverables: • MVP architecture / technical structure • Working prototype or first functional MVP • Clean codebase • Advice on next development phase Budget: Fixed price:250 USD Please note: this budget is for an initial MVP / prototype phase only, not a full end-to-end production platform. To apply, please include: • A short note on how you would approach this MVP • Relevant full-stack/architecture examples • Your recommended stack for this project • Estimated timeline for Phase 1 delivery We are looking for someone senior, pragmatic, and fast-moving who can help shape a strong first version of the product.

Flutter app language update

The Flutter mobile app is built with FVM 3.38.5 and targets both iOS and Android. The backend is Magento 2 with 32 store views covering up to 32 languages and locales. The language infrastructure code is already implemented in the app. This role covers two outstanding deliverables only: 1. Language switcher UI -- add a visible in-app dropdown so the user can change language and locale at runtime. 2. API localisation -- update 35 existing API calls so each one passes the correct country-specific store code, locale, and currency to the Magento REST API. No architectural decisions are to be made independently. All changes must follow the existing patterns in the codebase. All questions must be escalated before proceeding. SCOPE OF WORK -------------- TASK 1 -- LANGUAGE SWITCHER DROPDOWN The app already has locale/language state management in place. The contractor must: - Add a language/country switcher dropdown widget to the appropriate screen (to be agreed with the project lead before starting). - The dropdown must list all supported store locales in the correct display format - Selecting a language must update the app locale state, persist the selection across sessions, and reload the current view. - The switcher must respect the 32 supported store views and their corresponding locale codes. - UI will remain the same this is inly a translation of the app TASK 2 -- API CALL LOCALISATION (35 CALLS) The app makes 35 API calls to the Magento 2 REST API. Currently these calls do not pass the correct country-specific store code and locale parameters. Each call must be updated to: - Pass the correct Magento store code in the API path or header based on the user's currently selected locale. - Pass the correct locale and currency where the API supports it. - Derive all store-specific values from a single source of truth (the existing locale/store mapping already in the codebase). - Never hardcode a store code, locale, or currency in any API call. - All 35 calls must be updated -- no partial completion accepted. The contractor must audit all 35 calls, document what each one does, and confirm the mapping before making any change. A list must be submitted to the project lead for review before coding begins. TECHNICAL REQUIREMENTS ----------------------- - Flutter FVM 3.38.5 DELIVERABLES ------------- 1. Pre-work: List of all 35 API calls with current behaviour and proposed store code mapping -- submitted for review before coding. 2. Language switcher dropdown -- fully working, tested on iOS and Android, matching existing UI design. 3. All 35 API calls updated and verified against each locale. 4. Pull request per task raised against the development branch. 5. Brief notes per PR explaining what changed and how to test.

Finishing Steps To A Mobile phone app

We are developing a React Native mobile app (Expo) for an education recruitment platform (Slingshot Education). The app supports two user types: Candidates (teachers/support staff) School representatives (e.g. Headteachers, HR, office staff) The candidate side UI is largely complete. We now need a freelancer to complete backend integration and build out the school-side functionality. Candidate App (Mostly UI Complete) - Login screen (UI only) Home dashboard: Profile card (with avatar placeholder, name, email, location, preferred working areas) Availability toggle Dashboard cards (Roles This Week, Pending Docs, Status) Supply Roles tab (job listings with Apply button) Events tab (including “Meet & Greet” and other example events) Tips tab More tab: Includes the Additional Resources button & Join The Rewards Program button Navigation and Bottom tab navigation implemented App structured using Expo + React Navigation We have now introduced a second user type (school users) with a completely different dashboard and permissions. School Dashboard Must Include: Header with: Slingshot Education logo School name Welcome message Action buttons: Post a New Job Review Applications Dashboard cards: Active Jobs Applications Received Urgent Requests Sections: Upcoming bookings Recent applications Notifications / updates

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Trading bot development

Project Overview We are building a high-performance, low-latency trading engine designed for microstructure-based execution strategies in a high-tax (STT) environment. This is NOT a basic retail trading bot. This system requires advanced system-level engineering, multi-core CPU architecture control, shared memory communication, and real-time observability dashboard. The focus of this project is minimizing latency between signal generation and order execution while maintaining regulatory compliance (Order-to-Trade Ratio constraints). The developer must understand low-level performance optimization, concurrency architecture, and Linux system behavior. Core Technical Requirements Python Version (Mandatory) The engine must use: Python 3.13 Free-Threaded build (3.13t) NOT standard Python 3.10–3.12 Reason: Standard Python uses the Global Interpreter Lock (GIL), which blocks true parallelism. In low-latency systems, a 1–2ms delay caused by GIL contention is unacceptable. Multi-Core Architecture with CPU Core Pinning The engine must: Assign specific modules to specific CPU cores Use os.sched_setaffinity (Linux only) Prevent OS core migration (avoid context switching) Modules include: Sentinel (Risk & OTR monitoring) Sonar (Market entropy / regime detection) Oracle (Signal calculation loop) Execution Engine (Order placement) The goal is to eliminate unpredictable latency spikes caused by OS scheduling and cache invalidation. Inter-Process Communication Standard Python queues are NOT acceptable. Communication must use: multiprocessing.shared_memory Memory-mapped buffers Lock-free ring buffer architecture Reason: Standard queues introduce locking and object allocation overhead, increasing latency. The target is sub-millisecond internal communication between signal generator and execution engine. Latency Measurement The system must measure: End-to-end order placement latency Round-trip time (RTT) Module processing time Using: time.perf_counter_ns() Latency histogram logging This data must be streamed to the dashboard. Order Execution Logic The system should: Prefer passive limit orders Include 200ms cancel logic Manage Order-to-Trade Ratio (OTR) Implement controlled order flooding logic (compliant with broker rules) This is not a simple market order bot. FRONTEND REQUIREMENTS (React Dashboard) The frontend is NOT a trading UI. It is a real-time monitoring and control cockpit. Preferred stack: React (Vite or Next.js) WebSocket for live streaming Lightweight charting (Canvas or WebGL-based) Required Dashboard Modules Sentinel Panel Real-time RTT graph 20ms lockdown threshold indicator CPU usage per pinned core Emergency status Sonar Panel Market regime indicator (Attack / Veto mode) Entropy score display Zero-trust gate status Oracle Panel Weighted Order Book Imbalance (WOBI) heatmap Liquidity imbalance % Signal strength score Must use high-performance rendering (Canvas, not heavy SVG). Execution Panel Net Expected Value (NEV) Fill rate % Cancel rate Order-to-Trade Ratio (OTR) status Emergency Kill Switch Dashboard must include: Global kill switch Sends signal to monitoring service Monitoring service writes flag to shared memory Engine halts immediately Dashboard must NOT communicate directly with broker API. Deployment Requirements Linux-based environment (Ubuntu preferred) Dockerized setup preferred Separate processes: Trading engine Monitoring microservice React frontend Google Cloud compatible. 10 MOST IMPORTANT SKILLS TO ADD Attach these skills on Freelancer: Python 3 (Advanced Concurrency & Multiprocessing) Must understand GIL, free-threaded builds, shared memory. Low-Latency System Design Experience reducing microsecond-level bottlenecks. Linux System Programming Knowledge of CPU affinity, process scheduling, performance tuning. Multithreading & Multiprocessing Architecture Designing multi-core optimized applications. Memory Management & Shared Memory IPC Experience with mmap, shared memory buffers. Financial Market Microstructure Knowledge Understanding order books, liquidity imbalance, passive vs aggressive orders. WebSocket & Real-Time Streaming Required for live dashboard data. React.js (Performance-Optimized UI) Real-time data rendering without UI lag. Performance Profiling & Benchmarking Must measure and optimize latency. Cloud Deployment (Google Cloud / Linux VM / Docker) Production-ready deployment experience. VERY IMPORTANT Add this to filter weak developers: Applicants must answer the following: Have you worked with Python shared memory or mmap before? Have you implemented CPU core pinning on Linux? How would you measure internal engine latency? How would you prevent dashboard from affecting trading engine performance? This will eliminate 80% of generic bot developers.

Require NodeJS installed

NodeJS website deployment

**Need a WordPress/Divi Troubleshooter**

**Need a WordPress/Divi Troubleshooter — Broken Site Issues + PCI Questions** I need a freelancer who is good at **diagnosing problems**, not selling redesigns. I have an existing **WordPress + Divi** site for a small farm business. I believe parts of the site may be broken, and I need someone to identify what is actually wrong before I spend money on random fixes. ### Issues I want investigated * Possible broken site behavior * Whether plugins, theme settings, forms, or integrations are causing problems * Whether anything on the site may be complicating PCI compliance unnecessarily ### Scope of this project This first phase is a **diagnostic audit only**. I want: * Findings * likely causes * recommended fixes * estimated cost for next steps ### You are a good fit if you * Have real experience with **WordPress + Divi** * Can troubleshoot instead of guessing * Can communicate clearly in plain English * Have some familiarity with PCI compliance ### In your reply, please include * Relevant experience * Your rate for a diagnostic audit * What access you would need from me

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Website needs updating

**EDIT** Anyone who emails me direct and not through PPH will be ignored, and I will also not even look at your proposal on here! I have my website set up with Krystal hosting and WordPress/WooCommerce. What I need is someone to make it look better, make the layout better. All the pages are there, but it just doesn't feel good enough. I also need you to get the shop set up to have Categories showing up. Along with a dropdown where someone can select tags and refind results by the tags. This is the website: www.billiejopriestley.com What I'm thinking is the general theme needs changing. A about me page needs to be created where I can put clickable icons for things such as facebook, goodreads, tiktok etc. The page with the books showing that are clickable needs to stay just needs redesigning to look better. As I said, the website is there, the shop is working, I just need it to look better and a few tweaks. Also I need somewhere on the page it to have my company house number.

XERO - custom template for statements

I need some custom design for my statements so it states how many days they are over due by and in red - I also want to be able to put any forward orders on there.

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Build iOS & Android Frontend for Existing Platform

I am looking for an experienced mobile developer (React Native or Flutter) to build the iOS and Android applications for an existing, fully-featured web platform. The platform is a comprehensive app that connects users with local listings, a multi-vendor marketplace, job boards, and event bookings. You do not need to build any backend infrastructure. The backend is powered by Supabase, and we have 83 documented Edge Functions acting as a complete REST API. Everything from Stripe payments, auth, geocoding, and chat is already built and working on the web. Your job is purely frontend mobile development and API integration. Key Features to Implement (Mobile UI): Authentication: Email/Password & Profile setup (Supabase Auth). Discovery & Maps: Location-based search, filtering, and interactive map views for local listings. Marketplace: E-commerce product browsing, cart management, and Stripe Checkout integration. Events: Browsing and interacting with job postings and event schedules. User Dashboards: Order history, favorites, real-time chat messaging, and basic account settings. (Note: Complex admin tools and business owner dashboards will remain web-only for now to save scope). Tech Stack Requirements: Framework: React Native (Expo preferred) or Flutter. (React Native is a plus since our web app is built in React). Backend Integration: Supabase (Database, Storage, Auth) and REST APIs. State Management: Your preferred robust solution. What I Will Provide: 1. Full API documentation (Route map, endpoints, payload structures). 2. Access to the fully functioning web application for feature reference. 3. Design inspiration/guidelines for the mobile UI. Budget & Timeline: Budget: £5,000 - £6,000 (Fixed Price) Timeline: Please propose a realistic timeline in your bid. A milestone-based payment structure is preferred. To Apply, Please Include: 1. Links to 2-3 apps you have published on the App Store/Google Play. 2. Your preferred framework (React Native vs. Flutter) and why. 3. Confirmation that you are comfortable working with an existing Supabase REST API backend.

PART-TIME FREELANCE ROLE Claude Architect — Fleet Tech Platform

Part-time freelance Claude Architect for Fleet Tech Platform: Join a project building a petroleum tanker fleet management system powered by Claude AI. Seeking a technical partner to deploy Claude’s outputs rather than write code from scratch. Requirements: advanced Claude/ChatGPT prompting skills, GitHub proficiency (uploading, browser edits, commits), ability to read server logs and diagnose errors, basic web app knowledge (frontend, backend, database), SQL (queries, ALTER TABLE, INSERT), and clear written English for async communication. Bonus: Node.js/Express, advanced PostgreSQL, maritime domain knowledge, deployment experience on Railway/Heroku.

I need a person to finish a Wordpress website

I need a person to complete a Wordpress website to the exact look and design of what I require. Practically all the information is really on the website but I need design changes. The website is apexmould.co.uk

New Laravel email template

Design and implement a new responsive email template system for our Laravel application that looks more modern, professional, and aligned with our brand

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Full Stack MERN Developer and React Native app Developer Req

We are looking for an experienced full stack MERN developer (MongoDB, Express, React, Node.js) with experience in React Native mobile apps to build a complete event management and booking system. The project will include web and mobile platforms, a robust admin panel, and a role-based user system (Admin, Organizer, User). This system will be used to manage events, bookings, and users efficiently. The goal is a scalable, secure, and user-friendly solution suitable for the Pakistan market, with potential to expand internationally. Key Features 1. Roles & Permissions Admin: Full control of the system Approve/reject events Manage users and organizers (block/unblock) View all bookings Dashboard with analytics (events, users, revenue) Organizer: Can create and manage events Add event details, dates, pricing, and seats View bookings for their events User: Can browse events and book tickets Track booking history Manage profile 2. Event Management Event creation, update, and deletion (Organizer) Admin approval workflow for events Event categories and search/filter functionality Image uploads for events 3. Booking System Ticket booking with seat management Booking confirmation and history Payment integration (Stripe/PayPal optional for MVP) Real-time seat availability 4. Dashboards Admin Dashboard: Analytics, user management, event approval Organizer Dashboard: Events overview, bookings User Dashboard: Booked events and personal info 5. Web & Mobile Web: React + Tailwind CSS or Material UI Mobile: React Native (iOS and Android) Responsive, intuitive UI/UX 6. Backend Node.js + Express API MongoDB with Mongoose JWT authentication Role-based access control middleware Logging and error handling Tech Stack Frontend (Web): React.js Frontend (Mobile): React Native + Expo Backend: Node.js + Express.js Database: MongoDB (Atlas or local) Authentication: JWT Hosting: Vercel / Railway / Heroku (for web) Payment Integration: Optional for MVP (Stripe/PayPal) Deliverables Fully functional MERN backend with all APIs React frontend for web with dashboards and pages React Native mobile app (iOS + Android) Role-based authentication and admin panel Deployment instructions and source code on GitHub Documentation for APIs and system architecture Preferred Developer Qualifications Proven experience with MERN stack projects Strong knowledge of React Native and mobile app best practices Experience building role-based systems and dashboards Familiarity with payment integrations is a plus Good communication and availability for updates Project Timeline Estimated delivery: 6–12 weeks depending on complexity Clear milestones for backend, frontend, mobile, and deployment How to Apply Please provide: Examples of previous MERN + React Native projects Estimated timeline and cost Any suggestions for improving project workflow

Siemens Logo Program

I am looking for a PLC programner to provide a basic program for application

Need AI/ML software engineer

Seeking an experienced AI/ML software engineer with robust full-stack development skills. The ideal candidate demonstrates deep expertise in machine learning models, data pipelines, model deployment, and scalable backend/frontend systems. Fluent English is essential for clear collaboration with a US-based client. Professionalism, initiative, strong problem-solving abilities, and effective communication are required. Prior experience delivering production-grade AI solutions and working autonomously is preferred.