Conception de bases de données Jobs

Database Design is an important process that involves designing, creating and maintaining databases for business, scientific, and other applications. This is done to ensure data accuracy, data integrity, and appropriate delivery of information for an organization's internal and external use. A Database Designer is a specialist who is responsible for implementing the database design by creating the necessary programming code to support it.

At its core, Database Design encompasses relation modeling and optimizing the performance of databases through the use of indexing and proper construction of the queries. It also involves improving the usability of an application by providing the correct security settings and authentication measures that protect data from tampering. Database Designers also develop programs to monitor system performance and efficiency while ensuring data integrity throughout all operations.

Here’s some projects that our expert Database Designers made real:

  • Building ER models to represent specific projects
  • Creating SQL and PL/SQL systems for student appointment management
  • Implementing techniques to support database system development
  • Developing relational databases that can include user authentication measures
  • Optimizing a database’s performance with indexing and query construction
  • Designing a Microsoft Access activity tracking system linked to external sources
  • Building tailored Buy/Sell Request forms and systems.

These are just some of the projects our expert Database Designers have completed on Freelancer.com! If you’re looking for someone to help you with your own project, don’t hesitate to post your task on our platform – our leading designers have extensive experience in handling all types of projects related to database management. With their help, you can be sure that your project will be handled with utmost care and efficiency!

Sur 34,190 commentaires, les clients ont évalué nos Database Designers 4.9 sur 5 étoiles.
Embaucher des Database Designers

Database Design is an important process that involves designing, creating and maintaining databases for business, scientific, and other applications. This is done to ensure data accuracy, data integrity, and appropriate delivery of information for an organization's internal and external use. A Database Designer is a specialist who is responsible for implementing the database design by creating the necessary programming code to support it.

At its core, Database Design encompasses relation modeling and optimizing the performance of databases through the use of indexing and proper construction of the queries. It also involves improving the usability of an application by providing the correct security settings and authentication measures that protect data from tampering. Database Designers also develop programs to monitor system performance and efficiency while ensuring data integrity throughout all operations.

Here’s some projects that our expert Database Designers made real:

  • Building ER models to represent specific projects
  • Creating SQL and PL/SQL systems for student appointment management
  • Implementing techniques to support database system development
  • Developing relational databases that can include user authentication measures
  • Optimizing a database’s performance with indexing and query construction
  • Designing a Microsoft Access activity tracking system linked to external sources
  • Building tailored Buy/Sell Request forms and systems.

These are just some of the projects our expert Database Designers have completed on Freelancer.com! If you’re looking for someone to help you with your own project, don’t hesitate to post your task on our platform – our leading designers have extensive experience in handling all types of projects related to database management. With their help, you can be sure that your project will be handled with utmost care and efficiency!

Sur 34,190 commentaires, les clients ont évalué nos Database Designers 4.9 sur 5 étoiles.
Embaucher des Database Designers

Filtrer

Mes recherches récentes
Filtrer par :
Budget
à
à
à
Type
Compétences
Langues
    État du travail
    36 missions trouvées

    I have a Computer Science systems-design assignment due in three days that focuses specifically on database design. I need a clear, well-structured submission that demonstrates solid theoretical understanding and practical application. Scope – Analyse the problem statement I will share and extract data requirements. – Produce an ER diagram, explain entity choices, relationships, cardinalities, and constraints. – Normalise the model up to 3NF, documenting each step and the rationale. – Provide the final relational schema with primary and foreign keys clearly indicated. – Supply brief written explanations (2–3 pages) that justify design decisions and reference best practices. Acceptance Criteria • Diagram delivered in a common format (PDF or...

    €3232 Average bid
    €3232 Offre moyenne
    14 offres

    I’m rolling out the first release of a job-searching platform that already sits on top of a community of 87 million professionals. The entire focus of this build is to let candidates search and discover employer-posted opportunities quickly and intuitively. Core scope • Job listings are the single feature we need live for launch. Employers must be able to create, edit, publish, and archive their openings through a straightforward dashboard, while seekers browse, filter, and save roles. • Only direct employers will post ads in this phase. The workflow has to reflect that—no agency fields, fees, or approval steps. • Clean, responsive UI that feels inviting to a global audience and scales to the size of our network. • Solid search & filter logic (k...

    €637 Average bid
    €637 Offre moyenne
    52 offres

    I need an Elasticsearch cluster set up to store and manage log data. On premises Requirements: - Install and configure a new Elasticsearch cluster from scratch. - Ensure the setup is optimized for log data ingestion and querying. - Provide basic documentation for accessing and managing the cluster. Ideal Skills and Experience: - Proven experience with Elasticsearch installation and configuration. - Strong understanding of log data and its requirements. - Good documentation skills. Install on premises on windows servers

    €228 Average bid
    €228 Offre moyenne
    8 offres

    2-Week Paid PoC — Backend AI System for Indian Equities (Audit-Grade Research) Description: I am hiring a backend engineer for a 2-week paid Proof of Concept (PoC) to build a small working version of an automated investment research system for Indian equities (NSE/BSE). This is not a trading bot, not a dashboard, and not a scraping project. It is a backend-only system that: Automatically ingests official NSE/BSE filings Downloads and stores PDFs Computes SHA256 hashes Validates and parses documents Enforces BUY/HOLD rules in Python (not prompts) Generates research briefs with evidence Runs with zero manual data handling PoC Scope (2 Weeks) The PoC will cover 3–5 Indian defence stocks only. You must deliver: Automated PDF ingestion (no manual uploads, no scraping)...

    €422 Average bid
    €422 Offre moyenne
    93 offres

    A) Web app (template designer UI) Use an embedded DOCX editor: ONLYOFFICE Docs (most common for embedding) Flow: Your UI has a page /templates/:id/edit You embed ONLYOFFICE editor in that page (iframe + their JS config) Add a custom button: Insert Placeholder Clicking it inserts something like {{}} at the cursor B) Backend services You typically have 3 backend parts: File service Store original DOCX + edited template DOCX (S3 / Azure Blob / disk) Template metadata Store “field definitions” in DB: field_key: label: “Customer Name” type: string/date/number optional formatting rules Document generation service Input: template DOCX + JSON data Output: generated DOCX (and optional PDF) For merging placeholders, a popular approach in Node is docxtemp...

    €1024 Average bid
    €1024 Offre moyenne
    72 offres

    Project Title Custom Case Management & Workflow System for Accredited DNA Laboratory Project Overview We are an ISO 17025 accredited DNA testing laboratory in Australia seeking to develop a custom-built web-based case management and workflow system. This system will replace an 18-year-old legacy database and must reflect our current operational complexity, including: Legal DNA testing Government agency cases Immigration DNA testing (including international coordination) Distributed inventory management Document control and compliance Communication tracking and follow-up workflows This is a ground-up custom system. We are not seeking CRM customisation or template-based solutions. A detailed functional specification is being finalised and will be provided to shortlisted devel...

    €8420 - €16841
    Scellé
    €8420 - €16841
    173 offres
    Experto Firebase para app web
    5 jours left
    Vérifié

    Estoy creando una aplicación web y necesito a alguien que domine Firebase Studio para acelerar el desarrollo. El objetivo principal es montar toda la capa de backend en Firebase: • Configurar desde cero la base de datos y definir una estructura clara y escalable. • Integrar Firebase con servicios externos que ya uso en el proyecto. • Implementar la autenticación de usuarios (correo, Google, etc.). • Habilitar notificaciones en tiempo real para eventos clave dentro de la aplicación. • Gestionar el almacenamiento de archivos de forma segura y eficiente. Trabajo con un stack moderno (React + TypeScript) y agradeceré buenas prácticas, documentación breve de lo realizado y sugerencias para futuras optimizaciones. Si t...

    €24 Average bid
    €24 Offre moyenne
    11 offres
    ATS Job Posting & Tracking Site
    4 jours left
    Vérifié

    The goal is to create a web-based Applicant Tracking System that lets employers publish vacancies and follow every candidate from application to final decision. I only need two roles at this stage—Admin (full system control) and Employer (job and applicant management)—so please keep the interface and permissions model focused on those. Core functions I expect • Job Posting: easy form to publish, edit, archive, and reactivate openings, with searchable listings for the employer dashboard. • Candidate Tracking: status pipeline, notes, and simple reporting so an employer can see where every applicant stands at a glance. • Admin Console: manage employers, adjust fields/workflows, and pull high-level metrics. A clean, responsive UI, solid authentication, and go...

    €985 Average bid
    €985 Offre moyenne
    95 offres

    I have several disparate sources holding our inventory information and I want it all pulled together into one clean, well-structured Microsoft SQL Server database file. The job is straightforward in principle: extract every piece of inventory data you can reach, reconcile duplicate SKUs or mismatched item descriptions, then load the final result into a single .sql or .bak file that I can restore through SQL Server Management Studio. Please preserve every existing field that carries operational value—quantities on hand, reorder thresholds, location codes, cost figures, and any audit timestamps—and normalise the schema where it clearly improves reporting speed or data integrity. If a field appears under different names in different systems, map it consistently; if you uncover ga...

    €122 Average bid
    €122 Offre moyenne
    33 offres

    Project Title Senior Full-Stack Developer: Custom Labor & Vacancy Portal (Laravel 11, React, , Supabase) Project Overview We are seeking a highly skilled Senior Full-Stack Developer (or a small agency) to build a custom, high-security employment portal. This is not a basic job board; it is a comprehensive management system involving complex approval workflows, citizen data handling, and an intelligent profile-matching engine. The ideal candidate has deep experience in the TALL or VILT stack and a strong focus on security and performance. Technical Stack (Non-Negotiable) Backend: Laravel 11 (High-security engine for data, logic, and workflows). Frontend: React + TypeScript. Bridge: (To maintain a seamless SPA experience). Database: Supabase (PostgreSQL) with automated citizen dat...

    €6090 Average bid
    €6090 Offre moyenne
    189 offres

    I want to demonstrate provable data consistency across a geographically distributed Hyperledger Fabric network by persisting the blockchain ledger in CockroachDB instead of the default back-end. The work centres on two Fabric layers: chaincode and the ledger itself. Chaincode reads and writes must be routed so that every block committed by a peer is durably stored in CockroachDB, and peers must replay that data with no divergence even under node failure or network partitions. The scope includes mapping Fabric’s block and state data structures to a CockroachDB schema, wiring the peer so that commit and endorsement steps call the database seamlessly, and validating the design with a small multi-region testnet. CockroachDB will act strictly as the ledger store; MSP and other services r...

    €930 Average bid
    €930 Offre moyenne
    44 offres

    I’m looking for a seasoned full-stack professional who can guide me through deep-dive, project-driven sessions that sharpen every layer of web development. My foundation is already advanced, but I want to refine technique and architecture across the whole stack—from pixel-perfect React front ends to robust Django APIs and well-designed relational databases. Here’s what I need from you: • short, structured video calls (ideally 2–3 times a week) where we dissect real-world problems and pair-program solutions • code reviews that push me toward cleaner patterns, stronger testing habits, and production-ready deployment workflows • mini-projects or exercises that tie together JavaScript/React, Python/Django, HTML, CSS, and any supporting language or ...

    €4 / hr Average bid
    €4 / hr Offre moyenne
    16 offres

    I'm looking for a skilled developer to build a comprehensive customer database platform. The platform is intended to serve multiple purposes including: - Storing contact information - Managing customer interactions - Tracking sales and orders Key features of the database should include: - Ability to add new contacts via manual entry or importing from files - Storing a variety of information such as: - Personal details (name, address, phone) - Customer preferences and history - Contract information - Sales information Ideal skills and experience: - Experience in database design and development - Familiarity with data import functionalities - Strong understanding of data privacy and security - Ability to create user-friendly interfaces for manual data entry Please provide e...

    €921 Average bid
    €921 Offre moyenne
    262 offres

    I need a developer to design a SQL database and a small ERP-style system for my logistics company. This system will create goods dispatch notes based on specific parameters. Core Functionalities: - Calculate quantities to be delivered per item per day. - Calculate total of each item to be delivered per month per customer. - File upload capability. - Output goods dispatch notes in Excel format. - Accessible as a web app for different users - Dashboard to track progress of deliveries per month - Interface to modify the data and based on delivery needs - Capable of calculating and creating all the dispatch notes per week and per month Ideal Skills and Experience: - Proficiency in SQL and ERP system development. - Strong experience in database design. - Familiarity with Excel output generat...

    €462 Average bid
    €462 Offre moyenne
    139 offres

    Zoho ERP Integration Specialist Project Overview A leading service contractor company in Kenya, seeks an experienced Zoho ERP Integration Specialist to implement a comprehensive Zoho One ecosystem. The project involves configuring and integrating 11 Zoho modules with external systems including KRA eTIMS and M-Pesa APIs, tailored for Kenya's regulatory environment. Project Details Duration: 2-4 weeks (0-1 months) Work Model: Remote with occasional on-site visits to Nairobi Modules: 11 Zoho modules + 3 custom Zoho Creator applications Key Integrations: KRA eTIMS Type C, M-Pesa B2C API, Inter-module automation Budget: Competitive - Based on experience and proposal Note: Detailed Scope of Work document will be shared with shortlisted candidates. Required Skills & Competencies 1. Core ...

    €563 Average bid
    €563 Offre moyenne
    80 offres

    I’m running a web application on a custom-built PHP framework and it currently sits on an ageing database that I now want fully migrated to MySQL. The job is strictly a database migration—no codebase refactor is required at this stage—so the focus is on cleanly lifting all existing data structures and records into a fresh MySQL schema while keeping the application functional throughout the transition. What I’ll hand over: the current schema dump (or direct access if you prefer), sample data, and a brief outline of the application’s data flow so you can map dependencies accurately. What I expect back: • A MySQL-ready schema that mirrors the original structure, optimised where obvious gains are available (indexes, data types, constraints). • Reli...

    €19 / hr Average bid
    €19 / hr Offre moyenne
    99 offres

    I’m building an end-to-end lending experience for iOS that feels as smooth as Slice or Moneyview. The job covers both sides of the stack: a sleek native iOS front end and a secure, scalable back end with the APIs that power it. On the user side the flow is simple but must be rock-solid. A new customer signs up with email/password, can just as easily use a social account, and once inside can enable Face ID or Touch ID so returning is frictionless. They complete a loan application form, the system instantly checks eligibility, returns an approved amount (or declination), shows a clear repayment schedule, and later lets them review every past loan in a dedicated history screen. I need the full technical delivery: • iOS app (Swift or SwiftUI preferred) that implements the entire j...

    €49591 Average bid
    €49591 Offre moyenne
    33 offres
    AWS MySQL Setup
    3 jours left
    Vérifié

    I need a MySQL database dump sql hosted on AWS for backup and restore purposes. Key Requirements: - Expertise in AWS and MySQL - Set up MySQL without automated backups

    €12 Average bid
    €12 Offre moyenne
    29 offres

    Dynamic Page Title Prefilling in Notion for OKR System I have an Objectives and Key Results (OKRs) system set up in Notion. It is broken down as follows: • Objective (O1, O2, etc.), See attached: 1-OKR-Objective (O).png • Key Results (KR1, KR2, etc) within each objective, See attached: 2-OKR-KeyResults (KR).png • Project (P 1.1, P 1.2, etc.) inside of each KR where P 1.1 is the first project inside KR1 and P 2.2 is the second project inside KR2, etc. , See attached: 3-OKR-Projects (P).png • Task (T1, T2, etc.) inside of each Project where T1 is the first task in the project and T2 is the second task in the Project, etc. , See attached: 4-Tasks (T).png The scope of the project is as follows: 1. Make all the Tasks appear in the “Task List – General” da...

    €397 Average bid
    €397 Offre moyenne
    83 offres
    Niche Skill Marketplace Web App
    2 jours left
    Vérifié

    I’m ready to launch a niche marketplace where people can buy and sell live one-on-one skills. To keep future growth stress-free, I need the entire site built from scratch rather than on WordPress or a SaaS platform. Social-media logins should handle authentication out of the box, and CCBill will be the sole payment gateway. Here’s the core interaction I want implemented: I need it to be desktop and mobile friendly • Buyers browse a listed skill, pick an available time, and send a booking request. • Sellers can accept, decline, or counter with a new time until they finally hit Approve. • Once approved, CCBill charges the buyer automatically and both parties receive real-time alerts by text, email. Although we’ll launch with just two skills, the underlying...

    €466 Average bid
    €466 Offre moyenne
    206 offres

    Full-Stack Developers Needed – Large Education Discovery & Admission Platform (Long-Term Project) Project Summary We are building a large, data-driven education discovery and admission platform that helps students search colleges, courses, and entrance exams; compare institutions; access counselling; read reviews; and track admissions. This is a long-term product, not a basic website. Development will happen in structured phases with continuous feature expansion. Mobile apps will be developed later, so backend architecture must be scalable and API-first. We are looking for dedicated developers or a small team interested in growing with a startup-stage platform. Engagement Model Hourly Budget: $4/hour Long-term engagement Phase-based development Continuous work opportunit...

    €5 / hr Average bid
    €5 / hr Offre moyenne
    59 offres

    STATEMENT OF WORK (SOW) For Development of CISSP Educational Application This Statement of Work (“SOW”) is entered into on [Date], by and between: Client: __________________________ Address: ________________________ AND Service Provider (Freelancer): __________________________ Address: ________________________ Together referred to as the “Parties”. 1. Purpose The purpose of this SOW is to define the scope, deliverables, milestones, and responsibilities for the development of a CISSP Exam Preparation Educational Application, similar in functionality to Sybex and LearnZapp, deployable on Web, Android, and iOS platforms. 2. Scope of Work 2.1 Learner Application The Service Provider shall develop a learner-facing application with the following features: ...

    €149 Average bid
    €149 Offre moyenne
    10 offres
    Hotel PMS & ERP System
    2 jours left
    Vérifié

    Issuer Information Portfolio Size: 2–5 Hotels (Mixed Portfolio) Operating Geography: Global RFP Issue Date: 7 February 2026 Proposal Submission Deadline: To Be Confirmed 1. Introduction Growbiz Tech Private Limited invites qualified vendors to submit proposals for an enterprise-grade Hotel Property Management System (PMS) and fully integrated Enterprise Resource Planning (ERP) platform. The solution is expected to meet the functional depth, scalability, reliability, and ecosystem maturity associated with industry-leading hospitality systems used for enterprise benchmarking. 2. Project Objectives Support centralized management for 2–5 hotels globally Enable mixed portfolio operations (hotels and serviced accommodation) Deliver enterprise-grade PMS and ERP capabilities Ensure s...

    €3480 Average bid
    €3480 Offre moyenne
    60 offres

    I’m planning an interactive, data-structures-and-algorithms-focused coding duel platform and I need a crystal-clear design and architecture proposal before any code is written. The end product must feel like a learning arena first and a competition second, so every technical choice has to support quick feedback, fairness and easy-to-follow analytics for students. Core experience to address The platform will present the same DSA question to two users simultaneously, lock them into a fixed countdown and stream their code through a real-time execution engine so they can see results (compile errors, test-case pass/fail, runtime, memory) without refreshing. While live chat or leaderboards may appear later, this first proposal must concentrate on that real-time duel loop and the backend...

    €1282 Average bid
    €1282 Offre moyenne
    21 offres

    I already have the hosting and a fresh Laravel 10 install; what I need now is a complete directory system that can scale to multiple countries from day one. The core data type is Businesses, and every business needs a rich profile page that owners can claim, edit, and track through a clean dashboard, while I still retain full administrator control from a separate super-admin panel. Key features that must be working before hand-off: • User reviews & 1-to-5 star ratings, tied to authenticated accounts • Full business profile with logo, gallery, opening hours, map, and custom fields I can add from the back-office • Fast search with filter by category, country, city, and rating, plus a “near me” option using geolocation Because both owners and administrat...

    €917 Average bid
    €917 Offre moyenne
    33 offres

    I already have the hosting and a fresh Laravel 10 install; what I need now is a complete directory system that can scale to multiple countries from day one. The core data type is Businesses, and every business needs a rich profile page that owners can claim, edit, and track through a clean dashboard, while I still retain full administrator control from a separate super-admin panel. Key features that must be working before hand-off: • User reviews & 1-to-5 star ratings, tied to authenticated accounts • Full business profile with logo, gallery, opening hours, map, and custom fields I can add from the back-office • Fast search with filter by category, country, city, and rating, plus a “near me” option using geolocation Because both owners and administrat...

    €784 Average bid
    €784 Offre moyenne
    32 offres

    I need an experienced SQL professional who can take customer data sitting on a remote SQL Server and refresh the corresponding tables on our in-house server every day. The transfer must be reliable, consistent, and handled through SQL Server Management Studio (SSMS), as that is already part of our workflow and permissions model. Your job will be to analyse the source schema, map it cleanly to our destination tables, set up the daily pull / push routine, and keep concise logs so I can trace each run at a glance. Data consistency checks, graceful error handling, and verification reports are essential because the customer records drive several downstream apps on our side. The engagement is straightforward: configure the process, prove a few consecutive successful runs, document the step...

    €15 / hr Average bid
    €15 / hr Offre moyenne
    38 offres

    I’m ready to commission a custom PostgreSQL-based system that brings four critical workflows into one place: • Inventory control with real-time stock level monitoring and fast barcode scanning for check-in / check-out. • Employee schedule management so I can see who is assigned to each job at a glance. • Job costing and progress tracking that ties labor, materials, and overhead together for accurate profitability insights. • A secure API endpoint that pushes material usage from each job directly into QuickBooks, eliminating double entry. You will design the data model, build the web interface (any modern stack you’re comfortable with), and implement the QuickBooks integration. Clean, well-documented code and straightforward deployment instructions ...

    €959 Average bid
    €959 Offre moyenne
    263 offres

    I need a concise technical blueprint that shows exactly how to print in Cityworks environment at through SQL Server Management Studio. The goal is to make sure a field on the form "DUP. BAD CHECK “ L-If a Bad Check fee (L-BADCHECK) is attached to a case, it's owed. Status, type, etc. do not matter. Same for L-DUPLCTE. L-DUPBC - this is either or both a bad check fee and a duplicate fee from historic records (Pre-migration) 30 - BC 20 - Dupe 50 - Both (Rare, if it exists) the Cityworks front-end application, then landing it in the back-end SQL database on a batch schedule. You’ll be working with: • Cityworks PLL (latest build) • Microsoft SQL Server 2019 + SSMS What I expect from you: • A clear, step-by-step document that maps Citywor...

    €19 Average bid
    €19 Offre moyenne
    13 offres

    I need a complete online grocery store that loads quickly, feels smooth on both desktop and mobile, and makes shopping intuitive for every visitor. The core objectives are a friction-free browsing experience, crisp page transitions, and a checkout flow that never keeps the customer waiting. Key functions I want working flawlessly: • Secure user accounts and profile management • A smart product search with filtering by category, brand, and price • A persistent shopping cart with a streamlined two-step checkout • Payment integration for credit/debit cards and PayPal (no cash-on-delivery for now) Please build on a modern tech stack you are comfortable with—React, Vue, Svelte, or a performant Laravel/Node backend are all fine as long as the final site scores...

    €242 Average bid
    €242 Offre moyenne
    60 offres

    I need expert guidance to install a database server on a Windows operating system. Key requirements: - Experience with Windows server environments - Advise and whats required to install Sequoia Server/ sofware. - Ability to provide clear, step-by-step installation instructions and best practices

    €160 Average bid
    €160 Offre moyenne
    55 offres

    I’m planning an interactive, data-structures-and-algorithms-focused coding duel platform and I need a crystal-clear design and architecture proposal before any code is written. The end product must feel like a learning arena first and a competition second, so every technical choice has to support quick feedback, fairness and easy-to-follow analytics for students. Core experience to address The platform will present the same DSA question to two users simultaneously, lock them into a fixed countdown and stream their code through a real-time execution engine so they can see results (compile errors, test-case pass/fail, runtime, memory) without refreshing. While live chat or leaderboards may appear later, this first proposal must concentrate on that real-time duel loop and the backend...

    €149 Average bid
    €149 Offre moyenne
    21 offres
    Excel to Node/React Web App
    S'est terminé left
    Vérifié

    I need my existing Excel file rebuilt as a browser-based application written entirely in Node.js on the back end and React on the front end. The spreadsheet’s rows become records in a database, and every change made to any field must be timestamped and stored so that a full history is available for each record at a glance. Four roles will sign in—IT, manager, associate, and user—through a multi-tier authentication system. Some roles must be able to view and edit data, while others will have view-only access, so robust role-based permission checks are essential. In practice this means the app must let approved staff handle data entry and modification, allow managers to carry out data approval and reporting, and give IT the tools to perform user management without leaving ...

    €16 / hr Average bid
    €16 / hr Offre moyenne
    217 offres

    I am building a fully-featured social networking platform from the ground up and need a developer who can own both the server-side and front-end work. The stack is set: C# ASP.NET (Core preferred) powered by an MS-SQL database. Scope of work You’ll start by architecting the database, spinning up the ASP.NET project, and exposing a clean, well-documented REST (or GraphQL, if you prefer) API. Identity-based authentication, role management, and token-based security need to be wired in from day one. Key features I must see at launch: • Messaging system (asynchronous and real-time) • News feed with post, comment, like, and share capabilities • Private chat using SignalR or an equivalent WebSocket solution • Meeting scheduling module that lets users create, ...

    €717 Average bid
    €717 Offre moyenne
    110 offres

    I’m looking for a senior systems architect to design the technical foundation for a payment-gated booking network that controls access to real-time, high-demand service slots. From the user’s perspective, the flow is simple: select a slot → pay → receive instant confirmation. Behind the scenes, the platform must reliably handle concurrency spikes, subscription validation, atomic booking, and fast payment settlement, while guaranteeing zero double-booking. This is an architecture-first engagement. No UI or app build is required at this stage. Core Objectives Model the end-to-end flow for payment-gated real-time bookings for high-demand services. Design a subscription layer that wraps booking access. At launch we will offer a single monthly plan; the architecture m...

    €1157 Average bid
    €1157 Offre moyenne
    113 offres

    Articles recommandés juste pour vous