
Data Science Projects
Looking for freelance data science jobs and project work? Browse active opportunities on PeoplePerHour, or hire data scientists through Toptal’s rigorously vetted talent network.
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Google & Meta Ads Media Buyer (Remote)
We are not hiring someone to place ads. We are hiring someone who buys media with precision, scales what works, and cuts what does not — fast. Who We Are We run high-budget campaigns across Google and Meta for clients in Asia and Europe. Every dollar we spend has to perform. We need one sharp media buyer to own our accounts and deliver results month after month. What You Will Do Buy and manage paid media across Google Ads and Meta Ads. Control monthly budgets with strict ROAS and CPA targets. Test audiences and creatives systematically — scale winners, kill losers. Own conversion tracking across GA4, GTM, and Meta Pixel. Report monthly with clean data and a clear plan forward. You Are Who We Need If You: Have 2 or more years of hands-on media buying experience across Google or Meta. Have managed $10,000 or more per month and can prove it with real numbers. Make fast, data-driven decisions without waiting to be directed. Know GA4, GTM, and conversion tracking setup inside and out. Work fully independently and communicate clearly in English. What We Offer 100% remote — work from anywhere. Competitive pay based on experience and results. A high-trust team that moves fast and values sharp thinking. Real budgets, real clients, real impact every month. How to Apply Send your CV and campaign results to Subject Line: [Media Buyer] - Full Name - Ready to Scale Include your monthly budget, platforms managed, and one result with real numbers. No data, no review.
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Senior Google Ads Manager — High Budget / 100% Remote
We are looking for an experienced Google Ads Specialist to manage and scale high-performance campaigns for ecommerce and lead generation businesses. What You Will Do: • Manage Search, Shopping, Performance Max, Display, and YouTube campaigns • Optimize ROAS, CPA, and campaign profitability • Analyze search terms, audiences, bids, and performance data daily • Handle GA4, GTM, enhanced conversions, and tracking setup • Deliver clear reporting with real performance metrics Requirements: • Proven experience managing $50K+ monthly Google Ads budgets • Strong knowledge of Smart Bidding, tROAS, and tCPA strategies • Experience with GA4, GTM, and conversion tracking • Strong analytical and problem-solving skills • Ability to work independently and communicate clearly What We Offer: • 100% remote work • Long-term opportunity • Performance-based compensation • Fast-moving, results-focused team To apply, please include: • Largest monthly budget managed • Platforms and industries worked with • 2–3 campaign results with real numbers Shortlisted candidates will be contacted directly through the platform.
Sold UK Property Data
I am looking for an experienced UK property data researcher / scraper to compile a high-quality dataset of sold residential properties in England & Wales (C3 and C4 use classes), over the past 4 years, where the buyer is a limited company. The output must be delivered in Excel or CSV, cleanly formatted and deduplicated. For each transaction, the data we require: Company name of purchaser Registered address of company Address of sold property Sale price Completion / sold date Please explain: How you would identify the data Timeline Examples of similar UK property data projects This may lead to ongoing repeat work for the right freelancer. Please start your proposal with: “UK property data understood”
a month ago16 proposalsRemoteTo stitch together for a panorama streetview picture
x2nos of panoramas of a streetview stitched from photos. There are 90 images on 1 and another of around 20 on 2 panorama. You do not need to use all of the provided photos, as long as the streetview panorama is not distorted. To make a task easy and without needing to resolve any distortions, you have more than 30% overlaps in jpeg images to stitch from. Do not apply for this task if you use an auto stitch app like a Bimostich which is with too much of an image distortion. It is not a rocket science and can do myself with Hugin or Photoshop, but am short on time. With your offer confirm if you can do 1 day turn around. In the attached files is the sample of 1, 2 and 3 photos of 90 series. Where a car or a tree blocks off a house, please use a google map streetview to copy/paste from the other houses in the images. It is also important to add the front garden fences at least very roughly to the house fronts whilst working from google map streetviews.
15 days ago12 proposalsRemoteRetell AI + Zapier Webhook Fix
I need an experienced automation specialist to diagnose and fix an issue between Retell AI and Zapier. Retell AI is successfully capturing call data, but Zapier emails are coming through blank or missing key information. The webhook is connected, but the payload is not being mapped or processed correctly. This is NOT a basic setup job. I need someone who can properly debug and resolve the issue end-to-end. Scope of work: * Review existing Retell AI configuration (agent, call events, webhook setup) * Diagnose why Zapier is receiving incomplete/blank data * Fix webhook payload structure and ensure correct data is passed * Map all relevant fields in Zapier (caller name, number, summary, transcript, etc.) * Ensure emails are triggered AFTER the call with full data (not during or blank) * Implement a clean, reliable workflow for ongoing use * Test thoroughly with live calls and confirm working output Deliverables: * Fully working Zap that sends complete, structured call summaries via email * Clear mapping of all Retell fields into Zapier * Stable, repeatable setup (no intermittent failures) Requirements: * Strong experience with Zapier (webhooks, triggers, data mapping) * Experience with Retell AI or similar voice AI platforms (Twilio, Vapi, etc.) * Ability to debug API/webhook payloads (not just follow templates) * Fast turnaround — I want this resolved quickly Bonus: * Experience improving call summaries or structuring output cleanly * Suggesting better workflow or architecture if current setup is flawed
9 days ago43 proposalsRemoteLinkedIn Profile Data Extraction
I need comprehensive data extracted from approximately 375 LinkedIn profiles and delivered in a structured JSON format. You will use your own tools and infrastructure, ensuring each profile's roles are individually detailed. Scope of work - Extract info from 375 LinkedIn profiles, including full name, headline, location, LinkedIn URL, email, phone, about text, connection count, follower count, profile photo URL, premium status, and verified status. - For each profile, list every individual role separately with detailed info, including company name, job title, start date, end date, duration, location, employment type, description text, company industry, company size, company website, and LinkedIn URL. - Capture education details like school, degree, field of study, dates, and activities or societies. - Extract certifications with name, issuing organization, issue date, and credential ID. - Compile skills with endorsement counts, languages and proficiency, volunteer work, honors/awards, recommendations, featured section content, groups, and interests/follows. - Include recent posts/activity with full text, post date, likes, and comments with names. Read more Additional information You'll start with a test batch of 5 profiles and proceed with the full list upon approval. Please go through the pdf attached
a month ago12 proposalsRemoteLooker dashboard
Hi, I need to build an HR dashboard in Google Looker Studio connected to a Google Sheets file. We already have the visual design defined in a Claude artifact, so the goal is to replicate that structure in Looker Studio and connect it to the Sheets so it updates automatically when HR modifies the data. The deliverable would include: Fully functional dashboard in Looker Studio Connection to Google Sheets Automatic data updates Basic filters and clear KPI visualization Brief usage instructions for the team Additionally, we would like to: Align on KPI definitions (e.g. turnover, absenteeism, cost per employee) to ensure consistency Review and, if needed, optimize the Google Sheets structure for proper data modeling Ensure the dashboard is performant and scalable as data grows Keep the setup simple enough to be maintained internally without ongoing dependency I can share the reference design and the Google Sheets so you can assess the scope. Could you please let me know an estimated budget, timeline, and any similar projects you’ve done in Looker Studio?
11 days ago19 proposalsRemoteopportunity
React Native/Expo Developer: iOS App (RevenueCat IAP)
I am looking for an experienced React Native / Expo developer to complete my iOS journaling app, Black Box Journal. The skeleton is built and working — I need someone to finish and polish it for App Store submission. TECH STACK: Expo SDK 55, TypeScript, Expo Router, Supabase (@supabase/supabase-js v2) SCOPE OF WORK (7 deliverables): 1. UI Polish — consistent spacing, typography, colours, dark/light mode 2. Supabase RLS Security — row-level security policies, data persistence for journal check-ins 3. RevenueCat IAP — Annual £24.99, Monthly £4.99, Lifetime £149 (must show proof of prior RevenueCat work) 4. Apple Sign-In + Email Auth — complete both auth flows 5. Push Notifications — expo-notifications, daily journaling reminders 6. Data Persistence — all check-in data saved to Supabase correctly 7. AI Mood Trends — lightweight OpenAI API (GPT-4o mini) mood analysis PAYMENT STRUCTURE: Fixed price, 3 milestones (40% / 35% / 25%) BUDGET: Up to £500 DEADLINE: 28 May 2026 SCREENING REQUIREMENT: Please include a link or screenshot showing a previous RevenueCat integration in your proposal.
6 days ago47 proposalsRemoteHungarian - Speaking Sales Representative (Based in Hungary)
We are a global network that teaches children science, engineering and programming. The network operates through franchisees. The salesperson's goal is to contact potential franchisee leads who have contacted us for information about opening a Learning center branch in Hungary, provide them with the initial information and motivate them to a Zoom meeting with the network's management. In addition, we may need help participating in Zoom calls and assisting in accompanying follow-up meetings with candidates. If you have good communication, message-converging skills, sales skills and a desire for a long-term partnership, we may be able to connect you to the Next Engineers family, and assist you as our representative in Hungary. Good English and native Hungarian are required.
a month ago5 proposalsRemoteExcel & Automation Specialist Needed / Fix Data Tool
We are seeking an experienced Excel and automation specialist to take over, troubleshoot, and enhance an existing data management tool, as well as implement automation for invoicing and customer communications. This project involves improving an Excel-based system currently used to manage student course data, alongside building a streamlined workflow for generating invoices and sending confirmation emails. **Part 1: Existing Excel Tool (Fix & Optimisation)** An Excel-based tool has already been developed to extract and organise course sales data. It captures key student information, including: * Full name * Date of birth * Address * Enrolled course * Course start and end dates **Current functionality includes:** * Generating student name lists for class registers * Exporting student data for certification purposes * Structuring data for upload to a governing body platform **Current issue:** The data refresh function is not working correctly. When attempting to update the dataset with the latest orders, an error alert appears and the refresh fails. **Requirements:** * Diagnose and fix the refresh/data connection issue * Review and optimise the existing tool * Ensure reliable and efficient data updates * Improve usability where necessary **Part 2: Invoice & Email Automation** We also require automation of our invoicing and confirmation email process. **Current workflow:** * Order/customer data is exported from our WordPress website * Invoices and confirmation emails are created and sent manually **Requirements:** * Automatically generate invoices using order data * Create professional invoice templates (PDF format preferred) * Automatically send confirmation emails to customers * Emails must include accurate course and student details (course name, dates, etc.) * Attach invoices to emails where applicable **Integration & Workflow:** * The solution must work with our existing WordPress data exports (CSV format) * We are open to the best technical approach (Excel, Power Automate, VBA, Zapier, Make, or other solutions) * The system should be reliable, easy to use, and suitable for ongoing operational use **Deliverables:** * Fully functional and stable Excel tool with working data refresh * Automated invoice generation system * Automated email confirmation system * Clean templates for invoices and emails * Documentation or handover instructions Please Include in Your Proposal: * Relevant experience (Excel automation, Power Query, VBA, APIs, or workflow tools) * Examples of similar projects * Your proposed approach/tech stack * Estimated timeframe * Cost estimate We are looking for someone who can take ownership of this project, resolve existing issues, and deliver a reliable, long-term solution.
a month ago75 proposalsRemoteContract Customer Service Analyst
I am seeking a skilled Contract Customer Service Analyst to evaluate service performance and deliver data-driven insights to improve service quality and the overall client experience. The ideal candidate will be organised, detail-oriented, and capable of transforming support data into actionable process improvements. Responsibilities Respond to client inquiries and concerns in a timely and professional manner Analyse and monitor service issues to identify patterns and trends that facilitate process improvements Ensure a consistently high standard of service is maintained at all times Track and document support questions and resolutions for internal records Serve as a subject matter expert on internal policies, procedures, products, and services Develop training materials on products and services for internal teams Please highlight your service analysis and trend documentation experience in your proposal. We seek an independent professional to maintain our high standards and look forward to your application!
5 days ago16 proposalsRemoteopportunity
I need a website/platform for my project
We want to develop EU R&I Jobs, a specialist job platform for Research & Innovation roles across Europe, connecting employers such as universities, research centres, EU projects, startups, NGOs, and companies with candidates working in research, innovation, science, technology, policy, and project management. The site should use the provided logo and the colours, with a clean, professional, modern design. The core pages should be Home, Jobs, Post a Job, Upload your CV, and simple account areas for employers and admin. The Jobs page should allow users to search vacancies, filter by country and sector, browse paginated results, and open individual job detail pages showing the employer logo, job description, location, sector, deadline, and application link or email. Employers should be able to create an account, post jobs, upload their logo, edit and delete their own listings, and manage their submitted vacancies. Candidates should be able to upload their CV and basic contact/profile details. Admin should be able to review, approve, edit, or remove job listings and manage submitted CVs. Please provide a quote for designing and developing this responsive MVP website for desktop and mobile, including the front end, back end, database, basic user accounts, admin functionality, and deployment. Here's a mock-up: https://euro-spark-jobs.lovable.app
11 days ago89 proposalsRemoteContract Customer Service Analyst
I am seeking a skilled Contract Customer Service Analyst to evaluate service performance and deliver data-driven insights to improve service quality and the overall client experience. The ideal candidate will be organised, detail-oriented, and capable of transforming support data into actionable process improvements. Responsibilities * Respond to client inquiries and concerns in a timely and professional manner * Analyse and monitor service issues to identify patterns and trends that facilitate process improvements * Ensure a consistently high standard of service is maintained at all times * Track and document support questions and resolutions for internal records * Serve as a subject matter expert on internal policies, procedures, products, and services * Develop training materials on products and services for internal teams Please highlight your service analysis and trend documentation experience in your proposal. We seek an independent professional to maintain our high standards and look forward to your application!
6 days ago19 proposalsRemoteSenior Google Ads Specialist for High-Budget Ecommerce Campaigns
Manage high-budget Google Ads campaigns ($20k–$200k+ monthly spend) Scale profitable Search, Shopping, and Performance Max campaigns Improve ROAS while reducing wasted spend Build advanced campaign structures for ecommerce growth Set up and optimize GA4, GTM, and Enhanced Conversion tracking Analyze performance data and identify growth opportunities Optimize product feeds, audiences, bidding strategies, and funnels Collaborate with creative and ecommerce teams to improve conversion rates
17 hours ago40 proposalsRemoteopportunity
Digital project controls for a construction mega-project
Project description Devout Consulting is seeking a Power BI developer to support the build of a reporting and analytics solution for a major infrastructure programme. The scope includes creating app, establishing the underlying data environment, setting up the data lake, integrating key source data, and building Power BI dashboards and reporting outputs. The objective is to create a scalable and intuitive reporting solution that provides clear performance and delivery insight for project stakeholders. The role will involve translating business needs into practical data models, dashboards, and automated reporting. This is an opportunity to help shape the core reporting build and lay the groundwork for future digital capability. Required skills and experience Strong experience in Power BI development, including dashboard design, data modelling, DAX, Power Query, and reporting automation. Experience in data architecture and data lake setup, with the ability to connect and structure data from multiple sources into a coherent reporting solution. Ability to work with business stakeholders to define requirements and translate them into effective reporting products. Experience in infrastructure, construction, or project controls environments would be advantageous. Web-based application development capability would be preferable, but is not essential.
a month ago25 proposalsRemoteWeb3 Full-stack developer position is opened
We are expanding our team and seeking a talented Full Stack Developer to build and scale the OzoneX DEX platform. Responsibilities include crafting user-facing trading flows, seamless wallet integrations, real-time blockchain data handling, and robust core platform services. Ideal candidates possess strong web3 development experience, proficiency with decentralized protocols, and a focus on scalability, security, and performant UX. Submit proposals outlining relevant expertise and past DEX or blockchain projects.
6 hours ago15 proposalsRemoteBuild Targeted List of Primary Schools
Hi, I am looking for a freelancer to build a targeted contact list of primary schools and nurseries in the following areas: Barnsley Wakefield Kirklees This is a data research / data collection task.
a month ago50 proposalsRemoteI need an expert on scrapping with appollo.io
Hi i need an expert to help us to scrap some datas with appollo.io My need is to scrap and extract some contacts in france based on Human ressources function
22 days ago26 proposalsRemoteTechnical Lead (Python / AI Systems)
I am building an early-stage system focused on analyzing audio and video data (classroom / interaction analysis). The goal is not theoretical AI, but a working prototype that: - processes audio/video input - detects speech and activity - derives simple patterns - produces structured output for further analysis I’m looking for a strong technical thinker who can: - translate high-level ideas into concrete system architecture - make pragmatic technical decisions (tools, libraries, structure) - break down work into clear tasks for a developer - review and guide implementation - focus on getting something working (stepwise going for perfection and increasing complexity) Your role: - define the system architecture (input → processing → output) - select and validate tools (e.g. Whisper, diarization, OpenCV, etc.) - structure the pipeline and data flow - write clear technical tasks/specs - guide and review the work of 1 developer (offshore) - act as a sparring partner for technical decisions Profile: - strong experience with Python backend and/or data pipelines - experience building real systems (not only notebooks or experiments) - experience with APIs (FastAPI / Flask) - experience with audio/video processing is a strong plus - familiarity with integrating AI tools (not necessarily training models) - independent, critical, and structured thinker Practical: - freelance / part-time (5–10 hours per week) - remote - start asap This is not a pure development role. I’m specifically looking for someone who can think, structure, and guide, not just execute. To apply please include: - relevant experience (with concrete examples) - how you would approach building such a pipeline (short, structured) - availability
9 days ago35 proposalsRemoteopportunity
Build AI-powered document generation system (OpenAI API)
Project Overview I have an existing LMS platform where users access courses and complete structured workbooks (2 worbooks). I want to build a secure AI system that: - accepts completed workbook inputs from users - validates the data - generates documents documents - maintains consistency across all documents This is NOT a simple chatbot. It is a structured workflow system. - Core Workflow - User logs into LMS - User completes embedded workbooks (must NOT be downloadable) - User submits inputs to AI system Backend performs: - completeness validation - financial consistency checks - narrative checks - System creates a locked master data sheet AI generates: Documents All documents must remain consistent (single source of truth) Key Requirements - Security & IP Protection - Prompts must NOT be visible to developer/frontend - Prompts stored server-side (private database or secure vault) - OpenAI API key must be hidden (backend only) - No prompt exposure in frontend code
10 days ago85 proposalsRemoteNew Website in Shopify
We seek an experienced Shopify developer to rebuild and modernize our existing site (augustinejewels.com) using the Prestige theme, refine and optimize custom code, and migrate all products, collections, pages, customer data, and SEO settings. Responsibilities include responsive theme customization, performance optimization, secure payment and shipping configuration, and thorough QA across devices and browsers. Deliverables: polished, fast, SEO-friendly Shopify store with complete migration, documentation, and post-launch support.
7 days ago125 proposalsRemote