
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.
opportunity
Excel Spreadsheet for Carbon - must have GHG expertise
I am a GHG protocol carbon consultant. I am looking for a skilled freelancer to design an Excel spreadsheet template for carbon emissions reporting based on the GHG Protocol (Scope 1, 2, and 3). The spreadsheet should: • Ready-to-use template where I can input my own emission factors and data • Include all relevant emissions categories and calculation fields (Scope 1, 2, and 3) • Have automatic calculations for totals, category summaries, and overall emissions • Include conditional formatting or basic checks to ensure inputs are consistent • Be well-organised and easy to update for future reporting • Optional: basic dashboard or charts that update automatically when data is entered I will provide a Word document with additional structural requirements and layout ideas, but the freelancer does not need to input actual data or emission factors. Requirements for applicants: • Advanced Excel skills, including formulas, structured tables, and pivot tables if needed • Knowledge of GHG Protocol reporting structure (so calculations align with Scope 1–3 requirements) • Ability to create a user-friendly, professional template
15 days ago21 proposalsRemoteFull Stack Laravel + React Developer (AI Tools Experience)
Project Summary: We have an existing sustainability tracking platform (materials, emissions, transport data etc). We need a developer to continue development, extend features, and maintain the platform. Required Skills: PHP Laravel (mandatory) React (mandatory) MySQL (mandatory) AWS deployment experience Git workflow Experience using AI-assisted development tools (Replit AI + OpenAI Codex/GPT) Nice to Have: Experience with carbon emissions or supply-chain data Dashboard development REST API experience Expectation: Work on backend APIs, React UI, MySQL data models, and AWS deployment. Must be able to work independently and use AI tools for faster development. Please share: :heavy_check_mark: Portfolio or GitHub :heavy_check_mark: Relevant Laravel/React work :heavy_check_mark: Availability + hourly rate
12 days ago69 proposalsRemotePlatform where people share mental health treatment experiences
I am seeking a UK legal expert to conduct a comprehensive review of GDPR compliance for a community-driven platform designed for individuals in the UK to share their mental health treatment experiences. The platform will facilitate the sharing of personal health data, which will be anonymised, while aggregated data may be commercialised to third parties. Having previously collaborated with a solicitor on the Terms & Conditions, Privacy Policy, and Cookies Policy, I now require a final evaluation of these documents, ensuring they meet current legal standards, along with formal sign-off of the platform by a qualified legal professional.
20 days ago15 proposalsRemoteopportunity
Salesforce to Power BI Dashboard Conversion
I am seeking a proficient freelancer to transform my Salesforce-based Excel dashboard into a dynamic Power BI dashboard. The project requires the creation of high-quality visuals and the establishment of a seamless data flow from Salesforce to Power BI, encompassing fewer than 100,000 rows across various tables. It is essential that candidates possess relevant experience in similar projects; please highlight your expertise in your proposal. The goal is to deliver an engaging and insightful dashboard that enhances data visualization and analysis.
22 days ago34 proposalsRemoteTravel Accommodation API connection to CMS
I need a the following guys and then a continued relationship; 1.) Write a CMS such as Azure to connect to our travel accommodation suppliers API's (sitemeinder.com & travelgate.com) and then write and API from this CMS to onboard the data to our OTA platform https://your.rentals/ Our company is totallyapartmentz.com We look forward to hearing from you.
17 days ago60 proposalsRemoteMicrosoft Power BI Fabric (Data Engineering) Consultant – Ad-Hoc
I am seeking an experienced Microsoft Power BI Fabric (Data Engineering) Consultant for ad-hoc, on-and-off consulting assignments. The work will consist of short-term engagements focused on troubleshooting, optimisation, architecture review, and implementation tasks specifically within Microsoft Fabric. Scope of Work Microsoft Fabric Data Engineering solutions Performance optimisation and issue resolution Best-practice implementation, solution structuring and troubleshooting Guidance on enterprise-grade Fabric architecture Professional build-out or consulting based on requirements I will provide Note: I will supply all business logic, requirements, and content. Your role is to structure, implement, and optimise the solution professionally using Microsoft Fabric. Required Expertise Advanced, hands-on experience with Microsoft Fabric Strong background in Fabric Data Engineering and analytics workloads Proven consulting experience delivering Fabric-based solutions Ability to work independently on short, focused assignments ⚠️ Important: Please do not apply if your experience is limited to general Power BI, Azure, or Synapse. This role requires deep, specialised Microsoft Fabric expertise at an advanced consulting level. Please post you proposal to manoindi9 gmail com Your proposal or consulting approach are:- Details of the services you offer What post-implementation or post-launch support you can provide Relevant experience with Microsoft Fabric projects
a month ago10 proposalsRemoteMigrate Database from AWS to Office based remote server
We are using a Microsoft Access Database in two offices, connecting to AWS RDS, which also presents Data to an online diary at http://diary.pswevents.uk/events.php We would like to move all the data relationship/connectivity to our own remote office server and maintain speed and usage for two simultaneous connections. Can load any software as required onto the server. *****(Just waiting on update from my IT company for fixed IP address and Logon details before proceeding with project, hopefully by the first week in January)
a month ago24 proposalsRemoteopportunity
Engineer to audit Existing CRM Codebase (TypeScript/Node/NeonDB)
Job Description I’m looking for an experienced senior full-stack engineer to review an existing CRM system and provide a clear, structured technical assessment of the current codebase. This is not a build-from-scratch role. The goal is to audit the existing system, review architecture and implementation choices, and highlight risks, concerns, and improvement opportunities across backend, frontend, and data layers. Tech Stack Backend: Node.js, Express, TypeScript Frontend: TypeScript, Tailwind CSS Database: NeonDB (PostgreSQL) System Type: Custom CRM platform Auth: Mix of public and authenticated endpoints Scope of Review You will be asked to review the existing codebase and provide written feedback on: 1. Code Structure & Architecture Project structure and separation of concerns API design and route organization Service, controller, and data access patterns Type safety and TypeScript best practices 2. Backend & API Review Public vs authenticated endpoint design Validation, error handling, and middleware usage Security posture of public endpoints Rate limiting, abuse protection, and access controls 3. Frontend Review Component structure and state management Tailwind usage and maintainability Frontend/backend contract consistency 4. Database & Data Layer Schema design and relationships Query patterns and performance considerations Data access safety (SQL injection, unsafe queries) 5. Security & Reliability Authentication/authorization design IDOR, data exposure, and abuse risks Secrets management and configuration hygiene Logging, monitoring, and error visibility Deliverables A written technical review (bullet-pointed and structured) Clear identification of high-risk, medium-risk, and low-risk concerns Practical, actionable recommendations (no theoretical fluff) Notes on what is good and should remain unchanged No code changes are required unless specifically discussed. Ideal Freelancer 5+ years professional full-stack experience Strong TypeScript + Node.js background Experience reviewing or auditing existing codebases Comfortable with PostgreSQL / NeonDB Strong understanding of API security and CRM-style systems Clear written communication (this is a review role)
15 days ago45 proposalsRemoteopportunity
AI Agent For Lead Capture from Past Emails and Future
We are seeking a skilled developer or team to create an AI-powered Lead Capture Agent for our logistics company, Best Roadways Limited. This project involves ingesting historical leads from various sources, structuring and enriching the data, scoring leads, and automating reactivation through WhatsApp and email. The goal is to transform disorganized historical data into a clean, deduplicated, and scored lead database. Required skills include expertise in Python, LLM integration, and database management. Deliverables will include working ingestion pipelines, a scoring engine, and a comprehensive documentation. Competitive phase-wise pricing is expected.
22 days ago24 proposalsRemoteEmail Marketing Specialist (Klaviyo Flows & Template Design)
We are seeking an experienced Email Marketing Specialist with a strong background in Klaviyo to refresh our automated email flows and design engaging new email templates. You’ll play a key role in enhancing our customer journey, boosting retention, and driving sales through creative and data-driven email campaigns. Key Responsibilities - Audit and refresh existing Klaviyo email flows - Design visually appealing and on-brand email templates - Develop new automated flows to improve customer engagement and retention - Write compelling copy that aligns with our brand voice and resonates with our audience Requirements - Proven experience with Klaviyo email marketing (flows, segmentation, template design) - Strong copywriting skills with a focus on engagement and conversion - Creative flair for designing visually impactful emails - Analytical mindset with the ability to interpret data and optimize campaigns - Familiarity with e-commerce brands, preferably in health, beauty, or lifestyle sectors - Excellent communication and project management skills Please provide examples of Klaviyo flows and email templates you’ve created, your approach to optimizing email marketing for e-commerce, and any results you’ve achieved. We’re excited to see how you can help us drive growth!
10 days ago41 proposalsRemoteHealthcare Detective – Medical Billing Auditor
We are seeking a talented freelancer to assist in the development of HealthcareDetective.ai, a cutting-edge, HIPAA-compliant SaaS solution aimed at healthcare providers and insurers. This platform will focus on auditing medical billing records to identify duplicate charges, incorrect coding, and instances of overpayment, while automatically generating compliant dispute letters and recovery summaries. Our target market includes hospitals, clinics, healthcare systems, and health insurance providers. Fluency in English (B2+) and Polish(B2+) is essential. Candidate must be located in Europe. The project aims to achieve exceptional data accuracy and operational efficiency, ensuring compliance and reliability.
5 days ago29 proposalsRemoteSportPress Customisation - Wordpress
Job Specification – SportPress Customisation Project: Manager & Referee Login Portals + Match Workflow Platform: WordPress (SportPress Plugin) Objective: Build simple, user-friendly login areas for team managers and referees, with a controlled workflow for adding players, submitting match scores, and completing match reports. ⸻ 1. Overview We need two new user login areas—Manager Portal and Referee Portal—integrated with the existing SportPress plugin. These portals must be extremely simple and intuitive, suitable for non-technical users. The system must allow managers to log in, and complete their portion of match reports. Referees must be able to log in to see their assigned fixtures, record the score, and record disciplinary actions. Notifications and approval flows must be integrated. ⸻ 2. User Types 2.1 Managers • Log in to a dedicated Manager Portal. • Add players to their team (pending approval by admin before visible/active). • Receive notifications when referee has completed match data. • Complete their portion of the match report: • Goalscorers • Yellow/red cards for their players (if applicable) 2.2 Referees • Log in to a dedicated Referee Portal. • Access a list of their assigned matches only. • After the match: • Enter the final score. • Enter yellow/red cards issued (per team & player). • Submitting this triggers notifications to both teams’ managers. 2.3 Admin (Me) • Approves new players added by managers. • Can override any match data. • Receives notifications when managers and referees complete their steps. ⸻ 3. Functional Requirements 3.1 Login Portals • Entry points: • /manager-login • /referee-login • Clean, mobile-friendly UI (these users will likely be on phones). • Custom role types: • manager • referee • Restrict backend access — portals must be front-end based only. ⸻ 3.2 Manager Portal Features 1. Dashboard • Upcoming fixtures • Completed fixtures requiring match reports • Team information 2. Player Management • Add player (form fields TBD – basic info only) • Status: Pending approval / Approved • Admin receives notification when new player is submitted 3. Match Report Completion Managers should only be able to edit the following: (once completed they cannot edit) • Goals scored (select players; number of goals) • Cards for their own players (yellow/red) Validation: • Manager cannot enter scores; only referee can. • Manager cannot edit other team’s data. 4. Notifications • Email/push notification when: • Referee submits match result • Admin approves/rejects a player ⸻ 3.3 Referee Portal Features 1. Dashboard • Assigned matches • Match status indicators (e.g., pending input / completed) 2. Match Submission Form After the match, the referee should be able to record: • Final score (home/away) • Yellow cards (team → player → minute) • Red cards (team → player → minute) • Any admin notes 3. Submission Workflow • When submitted: • Lock referee fields from further editing • Trigger notification to both managers to complete their match report ⸻ 3.4 Data Workflow Summary Step 1: Match Played • Referee logs into Referee Portal → selects the match → enters: • Score • Cards • Submits match result. Step 2: Managers Notified • Both team managers receive notification (email/SMS if possible). Step 3: Managers Complete Match Reports • Each manager logs into Manager Portal. • Completes: • Goals • Cards for their players • Submits. Step 4: Data Goes Live • Once both teams submit, or after admin approves: • Results appear publicly on the website via SportPress. ⸻ 4. User Experience Requirements • Extremely simplified front-end UI. • No WordPress backend exposure. • Mobile-first responsive design. • Minimal fields and clicks. • Use large buttons, clear icons, and straightforward navigation. ⸻ 5. Technical Requirements • Integrate fully with SportPress custom post types and match data structures. • Custom post status for “player pending approval”. • Custom notifications (email or integrated WP notifications). • Use WordPress user roles/capabilities for access control. • Ensure compatibility with existing SportPress widgets and shortcodes. ⸻ 6. Deliverables • Functional Manager Portal (frontend). • Functional Referee Portal (frontend). • End-to-end workflow for match submission. • Player approval workflow. • Notification system. • Documentation for: • Adding managers/referees • Assigning referees to matches • Approving players • Editing match data
12 days ago41 proposalsRemoteExecutive Project Management
Project Title: Executive Project Management: “Operation Digital Foundations” (UK Outsourcing Hub Setup) Deliverables - Centralized Asset & IP Register. - Secured Access Management System (Password Vault + MFA). - Client Delivery Hub (Notion Dashboard). - Service SOP Library ("The Bible"). - Certification Lab (Staff Training & Validation Framework). Cloud Practice PH is seeking a seasoned Executive Project Manager to lead Operation Digital Foundations. This is a 20-hour specialised project to build the structural, technical, and compliance framework for our UK-facing data export centre. We are not a startup; we are a professional outsourcing service delivery hub. Your mission is to centralise our assets, secure our IP, and restructure our operational processes into a high-performance "Service Delivery" engine. Scope of Work & Key Sections 1. Asset, IP, and Goodwill Protection - Asset Audit: Identify and catalog all digital assets including domains, trademarks, and proprietary methodologies. - IP Security: Establish protocols to ensure all work produced within the centre remains the sole property of the firm. - Goodwill Preservation: Formalize communication standards to protect and grow the firm's reputation with UK-based HQ and end-clients. 2. Software Infrastructure & Access Management - Production Stack Setup: Centralize management for core tools such as Xero (Ledger), Dext (Intake), Notion (Knowledge), and Zoom Phone (Communication). - Security Deployment: Implement a "Least Privilege" access model and set up centralized password vaults (e.g., LastPass/1Password) with mandatory MFA for all staff. - User Provisioning: Develop a standardized "Onboarding/Offboarding" checklist for user access to prevent data leakage. 3. Process Restructuring (The Service SOPs) - Production Mapping: Convert existing "tasks" into a structured Client Delivery Hub. - The "Bible" (Service SOPs): Restructure technical manuals into step-by-step Standard Operating Procedures (SOPs) to ensure 99.8% accuracy. - Quality Loop: Define the "Quality & Accuracy Audit" workflow to catch errors before escalation to UK HQ. 4. The Certification Lab (Training Framework) - Validation System: Build a "Certification Lab" in Notion where associates test and validate skills using "Sandbox" data before accessing live UK client folders. - Reward Mapping: Link progress in the Lab to the "Progress Rewards" incentive program. Executive Activities (Work Breakdown - 20 Hours Total) - Phase 1: Infrastructure audit to map current assets, software licenses, and IP vulnerabilities (4 hrs). - Phase 2: Access & security deployment, including setting up the vault, MFA, and user access protocols (6 hrs). - Phase 3: SOP & workflow restructuring, converting data/notes into the Service SOP library and Client Delivery Hub (6 hrs). - Phase 4: Handover & management briefing to train the local team lead on new systems and quality audit protocols (4 hrs). Required Expertise - Executive Operations: Experience in setting up offshore Service Delivery Centers (BPO/Outsourcing). - Technical Literacy: Expert-level knowledge of Notion (Databases/Relations), Xero, and Dext. - Compliance Mindset: Deep understanding of UK GDPR and data privacy standards. - Process Engineering: Ability to transform complex technical tasks into simple, repeatable SOPs for junior staff. Deliverables - Centralized Asset & IP Register. - Secured Access Management System (Password Vault + MFA). - Client Delivery Hub (Notion Dashboard). - Service SOP Library ("The Bible"). - Certification Lab (Staff Training & Validation Framework).
5 days ago15 proposalsRemoteAndroid Employee Activity Keylogger
I need a discreet Android application that records employee device activity for compliance purposes. The app must log every keystroke, track websites visited in any browser, and chronicle foreground app usage with accurate timestamps. At user-defined intervals these three data streams should be consolidated into a clear report and sent automatically to a chosen email address. The service has to survive reboots, remain hidden from casual discovery, and run smoothly on Android 9 through 14 without demanding root access. Battery and data consumption should be minimal. A single first-run screen where I can enter SMTP credentials, reporting frequency, and perhaps an optional keyword filter is sufficient—after that, the interface can vanish. Deliverables • Release-ready APK plus fully commented source code • Straightforward setup guide suitable for a non-technical manager • README detailing the permissions used and collection methods Acceptance criteria • Keystroke, website, and app-usage logs arrive via email on schedule with correct timestamps • No visible notifications or icons after initial configuration • Service restarts automatically after a reboot or update
13 days ago8 proposalsRemoteLooking for B2B Email List – Beauty & Skincare (UK / USA)
Hello, I’m looking for a reliable freelancer to provide B2B email lists for outreach purposes. Requirements: • B2B business emails only • Beauty, skincare, cosmetics, salons, spas, e-commerce niche • UK and/or USA based businesses • Emails must be verified and active • NO personal emails (Gmail, Yahoo, etc.) • NO spam or scraped databases • GDPR compliant sources Please include: • How the data is sourced • When it was last updated • Confirmation that emails are business-related The list will be used for B2B cold email outreach only. Thank you.
12 days ago29 proposalsRemoteFull-stack web developer (product-focused)
Need a new portal developed so need someone with experience. The portal is basically a merchandise dashboard so clients can see what they have in stock, reorder, ship etc: Multi-tenant portal (each client/org is isolated) Auth + roles (client admin/approver/viewer, internal admin) Inventory + orders data model (Postgres, audit logs) Integrations (shipping labels + tracking, email, payments if needed) Admin dashboard + client dashboard UI
15 days ago95 proposalsRemoteExperienced eBay Virtual Assistant
Experienced eBay Virtual Assistant (Listings, Image Editing & Google Sheets) I’m looking to work with a highly experienced eBay Virtual Assistant who understands how to create professional, high-converting listings and can work confidently with Google Sheets as part of daily operations. This role is ongoing for the right person. Key Responsibilities Create and optimise eBay listings using pre-defined templates Write SEO-optimised titles and descriptions using high-intent keywords Upload and retouch product images (crop, enhance, background clean-up where needed) Accurately manage and update data in Google Sheets (inventory, SKUs, pricing, listing status) Ensure listings are compliant with eBay policies Maintain consistency across multiple product categories Required Skills & Experience ✔ Proven experience as an eBay Virtual Assistant ✔ Strong understanding of eBay SEO (titles, item specifics, keywords) ✔ Experience creating listings from existing templates ✔ Confident working with Google Sheets (formulas, structured data, accuracy) ✔ Basic to intermediate image retouching skills (Photoshop, Canva, or similar) ✔ Excellent written English and attention to detail Nice to Have (Bonus) Experience with ex-display or refurbished listings Familiarity with bulk listing tools Experience working with UK eBay accounts How to Apply Please include: Your experience with eBay listings Examples of eBay listings you have created (links or screenshots) Your experience level with Google Sheets Tools you use for image editing Your availability and hourly rate Why Work With Me Clear systems and listing templates provided Long-term, repeat work available Professional, organised workflow Fast communication and fair expectations
5 days ago24 proposalsRemoteRemote Virtual Assistant Needed
We are seeking a dependable and meticulous remote virtual assistant to provide essential support for ongoing administrative tasks. This role is ideal for an organized and proactive individual who excels at working autonomously. Key responsibilities include managing emails and calendars, conducting online research, performing data entry, formatting and organizing documents, scheduling meetings, and offering general administrative assistance. Candidates must possess strong written English skills, exceptional organization and time-management abilities, proficiency in Google Workspace and MS Office, and a proven track record of meeting deadlines with clear communication. Previous experience as a virtual assistant is advantageous. This project is ongoing and part-time, requiring 10-20 hours per week. The position is entirely remote.
3 days ago20 proposalsRemoteSocial & Digital Profiling Intelligence Backend (Fraud / KYC)
Project Description We are looking for an experienced backend developer to build a Social & Digital Profiling Intelligence System. The system will generate a digital identity, breach exposure, and risk intelligence report for an individual using: Name Phone number Email ID (optional) The platform is intended for fraud risk analysis, KYC enrichment, onboarding screening, and trust & safety intelligence. This is a single, complete backend development project. Scope of Work Backend & API Development API-driven backend service Input validation & phone number normalization (E.164 format) Asynchronous / queue-based job execution Secure, encrypted data pipeline Platform Presence Detection Detect and classify user presence as: Registered Not Registered Unknown / Unable to Fetch Across categories including: Social media Messaging platforms E-commerce Fintech & banking Job portals Government & utility platforms Each connector must: Operate independently Fail gracefully without affecting the system Return normalized JSON Log execution metadata Support retries and timeouts Breach & Data Exposure Analysis Identify public breach exposure Capture breach platform, date, and leaked attributes Assess breach severity and recency Feed breach indicators into risk logic Intelligence & Risk Scoring Global Risk Rating: SAFE / MODERATE / RISKY Digital Identity Strength Index (0–100) Identity maturity & footprint depth indicators Anomaly detection (thin identity, high breach exposure, etc.) Explainable scoring outputs ⚠️ No prediction of guilt, liability, or financial balances. Report Generation JSON profile output PDF intelligence report including: Identity summary Platform presence overview Breach exposure section Risk & identity scores Executive summary Technical Skills Required: Python or Node.js REST API development Async / worker-based architectures Secure database design PDF generation Modular, maintainable code Security & Compliance Public / permitted data sources only No credential storage Encrypted sensitive data handling Authenticated API access Audit-friendly logging This project is strictly for KYC and fraud-risk use cases. Deliverables Complete backend codebase API documentation Configurable scoring engine Platform connector modules PDF report template & generator Database schema & migrations Logging & error handling Unit & integration tests How to Apply Please include in your proposal: Similar backend or intelligence systems you have built Proposed technology stack Estimated timeline Fixed price Budget & Timeline To be proposed by the developer.
18 days ago26 proposalsRemoteGoogle Search Ads Campaign Optimization
This project focuses on planning, executing, and optimizing digital marketing strategies to increase online visibility and customer engagement. The project includes keyword research, Google Search Ads setup, ad copy creation, audience targeting, and performance analysis. Different digital channels such as search engines and social media are used to drive traffic and generate leads. The project aims to improve brand awareness, conversions, and return on investment (ROI) using data-driven marketing techniques
14 days ago26 proposalsRemote