Telegram Mini App: Multi-Seller Marketplace

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to build a multi-seller marketplace as a Telegram Mini App. This sounds like an exciting opportunity to create a platform where multiple vendors can connect with users seamlessly. I’ve worked on similar projects involving API development and payment gateway integration, so I’m familiar with the challenges and requirements. I’d be happy to go through the details and suggest the best technical approach. To better understand your vision, I have a few questions for clarification: Q1 – What specific user roles do you envision for this marketplace? Q2 – Are there any existing systems or platforms that you want to integrate with? Q3 – Which payment gateways are you considering for this project? Looking forward to hearing from you.

@infowider11

⭐️⭐️⭐️⭐️⭐️ Telegram Mini App Marketplace (Scalable API-First Architecture) ⭐️⭐️⭐️⭐️⭐️ I understand you need a scalable, multi-seller marketplace as a Telegram Mini App with a decoupled backend that supports future web and mobile expansion without rebuilding core systems. Answers to Your Questions: 1. Built Telegram Mini Apps using WebApp SDK (not bots), including real-time dashboards and payment-integrated flows (can demo on call). 2. Yes — developed multi-vendor marketplace systems with vendor onboarding, product management, orders, and payouts. 3. Backend: API-first (FastAPI/Node), modular services (auth, users, products, orders, payments), PostgreSQL + Redis, ready for multi-client consumption (Telegram → Web → Mobile). 4. Timeline: 3–5 weeks → Week 1 (architecture + setup), Week 2–3 (core APIs + marketplace logic), Week 4 (Telegram app + payments), Week 5 (testing + deployment). 5. Work with a small focused team (backend + frontend + QA) for faster, reliable delivery. Key Features: • Multi-seller marketplace logic (vendors, listings, orders) • Telegram WebApp integration (smooth UX inside Telegram) • Decoupled API for future scalability • Payment integration (local + international) • Dockerized deployment (Vercel/Hetzner ready) Let’s Chat… Thanks

@dinhthi

Hello I have built many Telegram Mini App so i believe i can finish this project quality So please contact me to see demo Thanks

@kareemmaize

Hi, This project is really about getting the backend architecture right from day one so Telegram is just one client, not the system itself. I’d approach this with a service-oriented backend: auth/session layer, marketplace core (listings/orders), payment service, and notification layer, all exposed through a clean API. Telegram becomes just a frontend consumer of that system. 1. Telegram Mini App experience I’ve worked with Telegram WebApp SDK integrations and understand the constraints around auth, session handling, and UI inside Telegram. The key is treating Telegram as a client layer, not embedding logic there. 2. Multi-seller marketplace experience Yes—marketplace systems where multiple sellers manage listings and orders require strict separation of seller data, order lifecycle, and payment handling to avoid conflicts and scaling issues. 3. Backend structure API-first with clear services: Auth/User service (JWT + Telegram auth bridge) Marketplace service (products, listings, orders) Payment service (handles multiple gateways) Notification/event layer (Redis-based) All exposed via REST/GraphQL so future clients plug in without changes. 4. Timeline & milestones Week 1–2: Architecture + core API (auth, users, listings) Week 3–4: Orders + payment integration Week 5–6: Telegram Mini App integration + testing Week 7+: Stabilization + deployment + handoff 5. Team or solo Solo (can scale if needed), ensuring consistent architecture and fast iteration.

@iosifpeterfi

I'm Iosif Peterfi, 15+ years delivering secure, scalable platforms across web and cloud, with a practical, outcomes-driven style. This is my speciality: turning complex, multi-tenant marketplaces into API-first, decoupled backends that scale with business needs and evolve across web, Telegram, and mobile. You're building a Telegram Mini App-driven multi-seller marketplace with a backend designed as API-first and fully decoupled from Telegram, ready for web and mobile growth without backend rewrites. You want clear service boundaries from day one and a design-phase NDA to share full specs. I will deliver a pragmatic backend blueprint and governance: API contracts, service boundaries, data model, authentication and payments approach, deployment and security guardrails, plus a phased plan that minimizes risk and speeds time to value. The result is a scalable, maintainable platform you can extend to web and mobile without rework, with predictable milestones and reduced risk of scope creep. Last quarter I helped a multi-seller marketplace in the retail sector migrate to an API-first backend. Onboarding for merchants dropped from days to hours, and order processing reliability improved. 1-2 weeks. Happy to discuss scope alignment. Let's chat - I can walk you through my approach in 15 minutes.

@VianRey1

Building a secure, flexible marketplace on Telegram is tough when you need true separation between backend and frontend, plus full code ownership and a smooth knowledge transfer. Rigid architecture or messy handovers can stall future expansion and waste time when you want to add web or mobile clients later. You can expect a fully decoupled, API-first backend that seamlessly powers your Telegram Mini App now and is ready for web and mobile down the road, with clear service boundaries and all documentation and code delivered straight to you. First, I’ll review your preferred stack and requirements to design the clean service-oriented architecture you need. Next, I’ll build the backend to support your payment flows and AI features, keeping all client assets secure. Finally, I’ll ensure handover with recorded walkthroughs and docs so your team can take over with confidence. Which aspect of the backend or API do you see as the biggest long-term challenge?

@Hubready

Hello! This is James from Hollywood, and I'm excited about the opportunity to work on your Telegram Mini App: Multi-Seller Marketplace project. After carefully reviewing the project details, I have a solid grasp of your goals and would love to clarify a few aspects: Could you please clarify the following questions to help me better understand the project? 1. What specific features do you envision for the marketplace? 2. Which payment gateways are you considering for integration? With over 15 years of experience in full-stack development, I'm well-versed in Node.js, PostgreSQL, Redis, and more. My background includes building scalable applications and integrating APIs, so I understand the importance of a robust architecture for your marketplace. To ensure success, I propose these phases: 1. Requirements Gathering and Design 2. API Development and Integration 3. Frontend Implementation 4. Testing and Deployment I’ve worked on similar projects, such as a multi-vendor e-commerce app and a custom API for a subscription service, providing me with the insight needed to bring your vision to life. I’m committed to delivering a solution that’s functional and enhances user experience. Let’s discuss how we can make your project a success!

@extreamcode

Hi there, I’ve read your Telegram Mini App multi-seller marketplace brief and I’m confident we can architect a future-proof, API-first backend that stays decoupled from Telegram while scaling to web and mobile. I’ve built complex marketplaces and payment integrations using Node.js/TypeScript, PostgreSQL, Redis, and containerized deployments, with a focus on clean service boundaries from day one. My approach: design a decoupled service-oriented backend around a core product, order, payment, and seller/auth service set, with a single, well-documented API layer that both Telegram WebApp and future web/mobile clients consume. I’ll implement robust data modeling, event-driven flows, idempotent payment handling, and feature flag-driven rollout to support the 6-12 month roadmap. I’ll also propose a pragmatic deployment plan (Docker, Vercel/Hetzner) and CI/CD to keep velocity high without sacrificing reliability. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. What specific success metrics (latency, uptime, SLA) do you expect for the API layer in the first 12 weeks, and how would you prioritize features to align with the 6–12 month roadmap? Best regards, Asad

@Hrolgar

Hi. I'll be upfront: my bid is above your listed range. Here's why. What you're describing (multi-seller marketplace, custom payments, AI integration, decoupled API-first architecture, KT sessions, 60 days support, full documentation) is not a $750 project. That's a product build. Pricing it like a gig gets you gig-quality code that costs more to fix than it cost to build. At $1,800 I'm scoping a clean MVP: the core marketplace loop that gives you a working product you can launch and iterate on. MVP scope (4 weeks): - Seller onboarding + product catalog - Buyer flow + order management - One payment integration - Telegram Mini App frontend consuming decoupled API - Docker deployment on your infrastructure - Source handover, documentation, KT session Follow-on (separate scope): - AI search, fraud detection, support bot - Second payment provider - Advanced analytics, admin dashboards - Web/mobile frontends (the API will already support them) To your questions: 1. No live Telegram Mini App. I won't pretend otherwise. I've built decoupled API platforms and the Telegram WebApp SDK integration is the easy part, not the hard part. 2. Yes. Multi-seller marketplace with role-based access, seller onboarding, payment splits. 3. Standalone API with versioned endpoints. Telegram is just a client. Web in 6 months, mobile in 12, same API, zero rebuild. 4. 4 weeks to functional MVP with the scope above. Full feature set is a second phase. 5. Small team. I architect and lead, with dedicated backend and frontend developers. All code reviewed before it ships. 6. AI search via embeddings + vector similarity, OpenAI integration for support. Fraud detection scoped to your transaction volume, better done in phase 2 with real data. Happy to sign the NDA and dig into the full spec.

@webmasters486

Hey, I’ve carefully reviewed your project and understand you’re building a scalable, API first multi seller marketplace as a Telegram Mini App with future expansion to web and mobile. The focus is on a clean, decoupled architecture from day one, strong performance, and long term maintainability rather than quick shortcuts or monolithic builds. For the backend, I would structure it as a service oriented system using FastAPI or Node depending on final needs, with clear separation between auth, users, products, orders, payments, and AI services. PostgreSQL will handle relational data while Redis supports caching and session handling. The API layer will be fully independent of Telegram, with the Mini App acting as a client via WebApp SDK. This ensures the same APIs can power web and mobile later without rebuild. I’ll also design webhook based integrations for payments and modular AI services for search, fraud detection, and support automation. Timeline would be around 6 to 8 weeks with milestones covering architecture setup, core marketplace features, payment integration, AI modules, testing, and deployment on your infrastructure. I typically work with a small focused team when needed for speed and quality. I have experience building marketplace style systems and integrating AI for search and automation. Let’s connect to review full specs after NDA and plan execution. Best regards, Muhammad Adil Portfolio: https://www.freelancer.com/u/webmasters486

@johnallenvillan1

Hello, I noticed your requirement for a Telegram Mini App that can scale beyond Telegram and support web and mobile without a backend rebuild, which tells me you're prioritizing clean boundaries and long-term maintainability. I’ve delivered a Telegram Mini App marketplace before using a decoupled API layer with Node.js, FastAPI services, and Redis-backed queues, and previously built a multi‑vendor commerce system that handled role‑based inventory, commission logic, and split payment routing. The real challenge here is ensuring the Telegram layer doesn’t leak into the core backend. A junior developer often ties business logic to Telegram events, but the long-term risk is high. The correct approach is building an API-first service mesh where Telegram becomes only one of several clients. I’ll structure independent services for auth, catalog, checkout, and payments, expose them through a versioned API gateway, containerize with Docker, and deploy on Vercel or Hetzner depending on latency needs. Payment handling will use an abstraction layer so local and international providers can be swapped. I’ll need clarity on your NDA process, hosting preference, and whether you expect per-seller dashboards at launch. This can be delivered in a structured phased timeline. Best regards, John allen.

@shakilan4

Hi, I’ve built scalable web apps with API-first architecture and can develop your Telegram Mini App marketplace using a decoupled backend (Node/FastAPI + PostgreSQL/Redis) to support Telegram now and easily extend to web/mobile later; I’ll structure services (auth, users, products, orders, payments) with clean boundaries, deliver in phased milestones, and I work with a small team for faster, reliable delivery. Best regards, Shakila Naz

@rbtech1984

Hello There!!! ★★★★ (API-first Telegram Mini App marketplace with scalable multi-seller architecture) ★★★★ Project understanding: You’re building a Telegram Mini App marketplace with a decoupled API-first backend supporting future web/mobile apps. Focus is on scalable architecture, multi-seller logic, payments, and AI integrations. ⚜ API-first backend architecture ⚜ Multi-seller marketplace logic ⚜ Telegram WebApp integration ⚜ PostgreSQL + Redis setup ⚜ Payment gateway integration ⚜ AI features (search/fraud/support) ⚜ Dockerized deployment I have experience building multi-user platforms with real-time flows and scalable backend systems. Worked on API-driven apps with clean service boundaries. My approach: design modular services → REST/GraphQL APIs → Redis queues for async tasks → secure payments → integrate AI APIs for smart features → deploy via Docker. I work with a small team, ensuring speed and quality both. Timeline & milestones I can share after scope review. Lets connect and discuss further, I’m ready to start. Warm Regards, Farhin B.

@AlexDeveloper911

Hey, I can start now. ✅ I’ve worked on something very similar. Building a multi-seller marketplace as a Telegram Mini App can be challenging due to the need for seamless integration with various services and ensuring scalability. What really matters here is designing a flexible backend architecture that can support Telegram, web, and mobile clients without requiring a complete rebuild. I've developed a similar project using Node.js, Express, PostgreSQL, and Redis. While I haven't specifically built a Telegram Mini App marketplace, I have experience with API-first architectures and service-oriented structures that align with your requirements. Let's chat more details. -Alex

@antondehtearuc

✅✅✅ Hi, there ✅✅✅ I have read your job description carefully and understood all clearly. ✔️1. I haven't shipped a public Telegram Mini App yet, but I built some Game, Payment management and Real-Estate property miniApp before. ✔️2. Yes I built a multi-vendor SaaS platform with seller onboarding, product management, order routing, role-based dashboards, and third-party payment integrations using Node.js, PostgreSQL, and React. ✔️3. Backend architecture "API-first NestJS backend with service-oriented structure — Telegram, web, and mobile all consume the same JWT-secured REST API, with Redis for caching and PostgreSQL for persistence. Zero rebuilds as clients scale." ✔️4. Timeline Week 1: Architecture & API contracts Week 2–4: Core services (auth, sellers, products, orders) Week 5–6: Payment integration Week 6–7: Telegram Mini App frontend Week 8: Testing & deployment. so total 8 weeks is enough for me. ✔️5. I work independently with full ownership from architecture to deployment, bringing in trusted specialists when the scope demands it. I’d love to chat more about your project to make sure I’m the right fit for what you’re looking for. Thank you

@daxm0

Hello, I’ve reviewed your project, Telegram Mini App: Multi-Seller Marketplace, and I’m genuinely interested. With my experience, I’m confident I can complete it efficiently and to a high standard. I fully understand your goals and the direction of this project. My focus will be on accuracy, quality, and efficiency throughout the process. I am committed to delivering an outcome that meets and exceeds your expectations. With 6 years of experience as a senior software engineer, I’ve worked on a wide range of projects and helped solve many technical challenges. I’m confident I can handle your project and deliver strong results through clear communication and a smooth process. If anything about the requirements isn’t completely clear yet, we can discuss it together and refine the details as we move forward. If you want the best possible outcome, I would be grateful to be considered for this project. I always focus on delivering quality work on time so that the solutions I build help grow your business rather than slow it down. I’d be happy to go over the requirements together to make sure I fully understand the project. After we clarify the details, I can begin immediately and maintain smooth communication that works well with your time zone. best regards, Dax M

@mughiraaa

Hi! i have gone through your project details, and i am confident we can help you out! we have worked on similar projects before, and we have got the expertise to deliver exactly what you are looking for. how about we set up a quick meeting to chat through everything? that way, i can give you a detailed plan, timeline, and budget, plus share some of our past work to give you a sense of what we can do. let me know a time that works for you! looking forward, Mughiraa

@flapjakc

Hello, I reviewed your Telegram Mini App marketplace scope and understand you’re building an API-first multi-seller platform where Telegram is only the first client layer, with web and mobile planned next. The key success factor is a service-structured backend (auth, vendors, catalog, orders, payments, notifications) so future clients reuse the same API without rebuild. I’ve built marketplace/SaaS dashboards using Node + PostgreSQL + Redis with custom payment integrations and modular REST architecture. Backend structure: API gateway → auth → vendor → catalog → order/payment → Redis queue workers → AI service layer. Timeline: Week 1 auth/vendor/schema, Week 2 catalog/search, Week 3 orders/payments, Week 4 Telegram integration + deploy. I work as lead full-stack developer with optional scaling support when needed. I’ve implemented semantic search and AI support assistants in marketplace workflows. Ready to review specs after NDA. I look forward to work with you.

@sertev2022

Hi. how are you? I'm an experienced full stack software Engineer and I have rich experience over 10 years. I’m sure I can fully satisfy your requirements with my ability, experience and neatness. I’d like to discuss about your project details. I’d happy to work on your project, if you’d like. Is there any chance you could possibly hire me on your project? Please contact me. Best regards!