Cross Stitch Projects

Web application Expert

Senior Blockchain / Full-Stack Developer Needed to Rescue E-commerce Project We’re building an e-commerce platform that handles global shipping and international orders, but the project is hitting serious roadblocks. The codebase exists, but the system isn’t ready for launch, and our current team is struggling to fix complex issues. We need a senior developer who can step in, understand the existing architecture, and stabilize the platform before we go live. The platform combines a traditional e-commerce flow with blockchain elements. Smart contracts manage payments, tokenized rewards, and some transaction logic, while a Python backend handles order processing, inventory, and shipping coordination. The frontend is built with React.js. Right now, blockchain interactions are inconsistent, some transactions fail, and data between the frontend, backend, and smart contracts isn’t always syncing correctly. This isn’t a new project — it’s about rescuing something that already exists. We need someone with hands-on experience debugging Solidity contracts, resolving state issues, and integrating blockchain reliably with e-commerce systems. You’ll also coordinate fixes across the Python backend and React frontend, ensuring orders, payments, and shipping workflows function correctly. We’re looking for a problem-solver who can take ownership, work independently, and bring a production-ready mindset. If you’ve helped pre-launch blockchain projects get back on track, understand cross-border e-commerce complexities, and can ensure the system is secure, stable, and ready for users, you’re exactly who we need.

Senior Data Engineer

We are seeking a Senior Data Engineer to design, implement, and optimize data pipelines utilizing Scala, Spark, and Java. The ideal candidate will develop and maintain real-time data processing systems essential for business operations. Collaboration with data scientists and analysts is crucial to understand data requirements and deliver high-quality solutions. Responsibilities include ensuring data quality through robust testing, monitoring workflows, and troubleshooting pipelines. Candidates should possess a degree in Computer Science or Engineering, with proven experience in data engineering, real-time processing, and SQL proficiency. Familiarity with cloud platforms and data governance is preferred. We offer a competitive salary, benefits, and opportunities for professional growth in a collaborative environment. Key Responsibilities: - Design, implement, and optimize data pipelines using Scala, Spark, and Java. - Develop and maintain real-time data processing systems to support business-critical operations. - Collaborate with data scientists, analysts, and other stakeholders to understand data requirements and deliver high-quality solutions. - Ensure data quality and reliability through robust testing and validation procedures. - Monitor and troubleshoot data pipelines and workflows to ensure high availability and performance. - Stay current with emerging technologies and industry best practices to continuously improve our data infrastructure. Qualifications: -Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field. - Proven experience with Scala, Spark, and Java in a data engineering or similar role. - Strong understanding of real-time data processing and streaming technologies. - Experience with big data platforms and tools such as Hadoop, Kafka, and Flink is a plus. - Proficiency in SQL and experience with relational databases. - Excellent problem-solving skills and attention to detail. - Strong communication and collaboration skills to work effectively with cross-functional teams. Preferred Skills: - Experience with cloud platforms (AWS, Azure, Google Cloud) and their data services. - Knowledge of data warehousing solutions and ETL processes. - Familiarity with data governance and security best practices.

opportunity

Biomedical App Service Engineer diagnostic Troubleshoot web/app

We are developing a web-based and mobile biomedical service assistant designed to help biomedical engineers, technicians, and service professionals troubleshoot medical equipment issues efficiently. The application will combine: A guided UI (equipment selection, issue type, image upload) AI-powered troubleshooting A private knowledge repository (service manuals, PDFs, internal documents) Support for multiple AI providers and API keys The goal is to reduce troubleshooting time, standardize service workflows, and make expert-level guidance available instantly. Attached(RFP Doc) Executive RFP Summary Biomedical Service AI Assistant (Web & Mobile) Project Overview We are seeking a qualified software development partner to build a Biomedical Service AI Assistant, a web-based and mobile application designed to help biomedical engineers and service technicians troubleshoot medical equipment efficiently. The platform will combine guided user input, AI-powered diagnostics, image analysis, and a private repository of service manuals, delivering fast, OEM-aware troubleshooting support in both online and offline environments. Key Objectives Reduce medical equipment downtime Standardize biomedical service workflows Provide instant, AI-assisted troubleshooting Prioritize internal service manuals over public AI knowledge Support multilingual output for global service teams Core Features Guided Equipment Selection Users select: Equipment type (Ultrasound, CT, MRI, etc.) Manufacturer and model (e.g., GE LOGIQ E9) Software / firmware version The system auto-generates a structured troubleshooting prompt and prevents redundant questions. AI-Powered Diagnostics (Multi-Provider) Supports local AI (offline, no cost) and cloud AI providers Modular architecture with multiple API keys per provider Automatic fallback when quotas are exceeded No hard-coded keys; all managed via an admin interface Private Knowledge Repository Upload and manage OEM service manuals (PDF format) AI searches internal documentation first (RAG approach) Reduces hallucinations and improves technical accuracy Image-Based Troubleshooting Upload photos of error screens, artifacts, probes, connectors AI analyzes images together with equipment context Always processes the most recent upload Multilingual Translation (Output Level) Translate AI responses from English into: Spanish, Portuguese, French, Italian, German Toggle translation per response Preserves technical terminology and safety warnings Platforms Web application (desktop and tablet) Mobile application (iOS & Android or cross-platform) Shared backend and AI logic across platforms Administration & Configuration Manage AI providers and API keys Enable/disable local or cloud AI engines Upload and organize service manuals Configure supported translation languages Target Users Biomedical engineers Imaging service technicians Independent service providers Hospitals and imaging centers Deliverables Production-ready web application Mobile application Secure backend API Admin configuration panel Scalable AI and document-search architecture Ideal Development Partner Experience with web and mobile applications Proven AI / LLM integration expertise Familiarity with document search or RAG systems Healthcare or technical service experience preferred One-Line Summary A smart biomedical service assistant that combines AI, service manuals, and guided workflows to deliver fast, multilingual, OEM-aware troubleshooting on web and mobile platforms.

Part-Time VA: LinkedIn, Lead Gen & Social Media Management

Project Description: I am looking for a proactive and organized Virtual Assistant to support my brand’s digital presence and lead generation efforts. This is a long-term, part-time role requiring approximately 10 to 20 hours per month, with the potential to scale as we grow. The ideal candidate is someone who understands B2B engagement, is tech-savvy, and can work independently to keep our channels active and our pipeline growing. All while using human generated content, not AI. The use of AI tools can be used to assist you in your function. Key Responsibilities: LinkedIn Management: Drafting 2-3 engaging posts per week with content suggestions; engaging with comments and relevant industry posts. Lead Generation: Identifying target prospects based on specific criteria and conducting initial outreach/connection drafts for our review. Industry Updates: Monitoring news/trends in specific industries and summarizing key points for content or internal use. Website & Social Media: Basic content updates to our website (WordPress) and cross-posting content to other social platforms (Instagram/Twitter). Admin Support: Managing a simple CRM or spreadsheet to track lead progress. Requirements: Excellent written English and communication skills. Experience with LinkedIn (Sales Navigator experience is a plus). Familiarity with social media scheduling tools (e.g., Buffer, Hootsuite, or Canva). Basic understanding of CMS platforms. Highly organized and able to meet weekly deadlines. Budget & Hours: Rate: $5 - $10 per hour. Volume: 10–20 hours per month (approx. 3–5 hours per week). Type: Ongoing monthly collaboration. How to Apply: Please start your proposal with the word "PROACTIVE" so I know you’ve read the full description. Briefly outline your experience with LinkedIn lead generation and provide examples of social media accounts you have managed.

opportunity

Children’s Puzzle Writer – Create 50 Detective Mystery Cases

I am looking for an experienced children’s puzzle writer and/or activity book creator to develop 50 original, immersive detective mystery cases for children aged 7–9. The working tile of teh book is 'The Holiday Detective Activity Book for Kids Ages 7–9”'. This is not a story book but a kids activity book for school holidays based on solving mysteries . The aim of this book is to make children feel like they are real detectives solving mysteries, rather than simply completing standard activity book puzzles. This should NOT feel like a typical kids’ activity book filled with word searches, crosswords, or random puzzles. Core Creative Requirement: **Each case should: Make the child feel like a detective investigating a mystery Be driven by a storyline with clues Encourage logical thinking, deduction, and reasoning Feel purposeful and investigative rather than “puzzle for puzzle’s sake” **Not all cases need to use traditional puzzles. Some mysteries may be solved through: Process of elimination Careful reading of clues Logical reasoning based on evidence Comparing statements from suspects **In some cases, the child may be given: A list of suspects A set of clues or witness statements A timetable, map, or simple diagram **The child should use these to work out: Who did it What happened Where or when it happened **Scope of Work You will create 50 unique detective cases, each including: Case Title - Fun, mystery-themed, age-appropriate Short Storyline / Scenario Engaging and easy to read Positive, child-friendly tone No violence, crime, or dark themes Relatable everyday situations for children **Investigation Method Each case should clearly explain how the child investigates the mystery, which may include: Solving an integrated puzzle Eliminating suspects based on clues Matching evidence to characters Reasoning through statements or timelines ** Interactive Elements Each case must include opportunities for children to: Write notes Circle or cross out options Draw lines or arrows Complete tables, checklists, or grids **Solution & Explanation Clear and unambiguous final answer Short explanation showing how the clues lead to the solution **Puzzle & Content Guidelines Target age: 7–9 years All content must be 100% original Black-and-white interior only No colour-dependent logic Avoid overused activity book formats such as: Word searches; Simple crosswords; Random mazes; Standalone cryptograms Puzzles or investigative methods should always feel meaningful to the story. ** Themes Cases should be relatable and suitable for school holidays, such as: School and clubs Family and friends Pets and animals Sports and hobbies Travel and days out Seasonal and holiday situations **Design & Illustration Design/illustration skills are not required as a separate designer may be hired, however would be a bonus if the puzzles could also be illustrated. ** Ideal Freelancer would have: Experience writing for children (especially ages 7–9) Experience with activity books, puzzle books, or educational content Strong storytelling and logical thinking skills Clear, friendly writing style To Apply, Please Include A brief description of your relevant experience Examples of previous children’s work (if available) A short sample detective mystery idea I AM OK WITH THE USE OF AI TO HELP WITH THIS PROJECT BUT PLEASE DO NOT JUST GIVE A CHAT GPT SAMPLE ABOUT A MISSING LUNCH BOX OR MISSING LIBRARY BOOK. The mysteries while aimed at kids age 7-9 shouldn't be too simplistic. They need to use their logic skills to solve. They shouldn't be able to solve the mystery in 5 mins. This is a school holidays activity book that should keep them occupied.

opportunity

Full-Stack Mobile Developer for App (iOS & Android)

I am looking for a talented mobile app developer (or small agency) to build Pinvera, a community-driven social mapping platform. The app allows users to report and "pin" real-world social encounters to a map, categorized by specific archetypes (Karens, Chads, Legends, and Safety Warnings). The app features a robust moderation system and a gamified experience where users earn tokens, increase their trust score, and compete on a global leaderboard. Key Features & Functionality 1. User Authentication & Profiles Sign-up/Sign-in via Email, Google, and Apple ID. User profiles displaying "Trust Score," "Level," and "Total Tokens." Streak tracking (e.g., 0-day streak) to encourage daily engagement. 2. Interactive Map Interface (Core Feature) A real-time map view (Google Maps or Mapbox integration). Visual "pins" based on the category of the encounter. Filter system to toggle visibility of different pin types (Karen, Chad, etc.). "Current Location" centering and search functionality. 3. Encounter Reporting ("Add Pin") User-friendly form to submit encounters. Categories: Karen: Annoying or entitled behavior. Chad: Positive or funny encounters. Legend: Wholesome or helpful encounters. Warning: Scams, safety alerts, or warnings. Submission Details: Title, Description, Category selection, and Geo-location (automatic or manual). 4. Moderation & Pending System All submitted pins must go to a Pending Queue. Admin/Moderator capability to review, approve, or reject pins before they appear on the public map. A "Pending" tab for users to track the status of their submissions. 5. Gamification & Leaderboard Token System: Users earn tokens for approved pins. Trust Score: A leveling system (Level 1, 2, etc.) based on the accuracy and frequency of reports. Leaderboard: A dedicated "Board" tab showing top users ranked by Tokens, Trust, or Activity. 6. Categorized Feeds Dedicated tabs for "Karen Sightings," "Chad Encounters," "Nice Legends," and "Warnings." Feeds should include "Most Reported" trends for the week (e.g., "Most reported: Phone scams this week"). Technical Requirements Platform: Cross-platform development (Flutter or React Native) to ensure 100% feature parity on iOS and Android. Backend: Firebase (Firestore, Auth, Functions) or a Node.js/PostgreSQL setup. Geolocation: Deep integration with GPS and mapping APIs. UI/UX: I have existing high-fidelity wireframes/screenshots. The developer must be able to replicate the clean, modern aesthetic shown in the designs (rounded containers, soft shadows, and specific iconography). Timeline & Milestones Phase 1: Backend setup & User Authentication. Phase 2: Map integration & Pin submission logic. Phase 3: Admin Moderation panel & Pending flow. Phase 4: Gamification (Tokens/Leaderboards). Phase 5: QA Testing & Deployment to App Store/Google Play. How to Apply Please provide: Examples of previous map-based or social networking apps you have built. Your preferred tech stack for this project. An estimated timeline for an MVP (Minimum Viable Product).

Needed: Senior UX & Graphic Designer - Shopify Expert

SENIOR UX & GRAPHIC DESIGNER - LUXURY E-COMMERCE (Shopify Expert) *Note: We use AI and expect you do the same. However, we have an AI usage policy that will be discussed with shortlisted candidates.* We are seeking a senior-level UX & Graphic Designer to complete the design of a luxury high-fashion e-commerce platform built on Shopify. *Not a from-scratch build; budget reflects defined scope.* This is an early-stage, founder-led startup with a small, senior-only team. No juniors. No mid-level talent. The work here establishes the long-term foundation of the brand. Continued engagement is possible only if value is clearly demonstrated. You will collaborate directly with the Founder, alongside a Senior Developer and Marketing Executive, in a high-trust, high-accountability environment. CORE MANDATE - Design and deliver a high-fashion digital experience that reflects authority, restraint, and clarity—across UX, visual identity, and cross-channel brand expression. This is a build-with-intent environment; design decisions must withstand scrutiny over time. *This is not a speed-over-quality role. The scope is highly specific and exacting. REQUIREMENTS (Non-Negotiable) - Technical (Expert Level) - Shopify EXPERT — not “strong experience” - Deep experience with custom themes, UX constraints, and design-to-development handoff - Advanced desktop and mobile-first UX design - Production-ready outputs (Figma or equivalent) CREATIVE (Luxury Standard) - Proven experience in luxury / high-fashion digital design - Exceptional taste, typography, hierarchy, and restraint - Portfolio that reflects editorial-level execution (generic or trend-driven work will not be considered) BRANDING & STRATEGY - Strong understanding of branding systems and brand strategy - Ability to design within and extend brand guidelines intelligently - Web and social design must operate as a single, cohesive brand expression CRITICAL THINKING & OWNERSHIP - Able to think on your feet and articulate why decisions are made - Expected to challenge ideas constructively when brand integrity, UX logic, or long-term viability is at risk—or when a more elegant solution exists - Silence is not collaboration - Strong project discipline: risk-spotting, clear communication, and follow-through WORK ENVIRONMENT - Small, senior-only team - High trust, high accountability—no tolerance for the opposite - Founder-led with a clear long-term vision - Focused, energized, and intentional execution DO NOT APPLY IF: - You require step-by-step direction - You describe yourself primarily as an executor or implementer - You lack direct luxury / high-fashion experience - You cannot articulate the why behind your decisions - You are uncomfortable with high inspection standards and accountability - You are spread thin across multiple clients APPLICATION REQUIREMENT (Read Carefully) - In 150 words or fewer, identify one design decision commonly used in luxury e-commerce that you believe is overused or misapplied. - Explain why it fails and what you would consider instead. - Do not reference specific brands. No links. No visuals. *Submissions that ignore this instruction will not be reviewed.