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About the Project LDX is a production freight & customs platform for a Canadian/US cross-border trucking brokerage. Core is shipping — multi-tenant auth, loads, carriers, drivers, stops, documents, messaging, customer portal, and a driver mobile app are all live. We need an experienced contractor to build out the six remaining modules, listed in priority order. Stack: pnpm + Turbo monorepo. - apps/api — NestJS + Prisma + Postgres + [login to view URL] (/notifications namespace) - apps/web — [login to view URL] 14 App Router + Tailwind v4 (LOADEX ldx-* design tokens pre-wired) - apps/mobile — Expo React Native driver app - paps-pars-tracker/ — already built Express microservice (port 3050): 18 scraper adapters (Zipments, BorderConnect, CFIA + 15 Canadian brokers: PCB, Livingston, Farrow, Buckland, Cole, Willson, GHY, Deringer, Descartes, Candata, JWSmith, Hocusa, Mohawk, Bilsi, BCB), polling daemon, REST API. Freelancer integrates with it — does not rebuild it. --- The Six Modules to Deliver 1. Customs Operations — API + UI Build (integrates with existing tracker) CustomsModule in apps/api/src/modules/customs/ is empty, broker page subdirectories are bare. The paps-pars-tracker sidecar exists with 18 working scrapers and a REST API. Build: - Prisma models: CustomsShipment, CustomsStatusSnapshot (append-only), CfiaInspection. Keys: barcode, type (PAPS/PARS), broker triple, denormalized lastStatus / lastCheckedAt, pendingAutoDetect, unique (companyId, barcode, type). - NestJS integration layer — axios PapsTrackerClient wrapping the sidecar's endpoints (GET /api/paps/query/:barcode, bulk query, watch list management). Boot-time resync of active shipments back into the tracker's watch list (tracker state is in-memory; Postgres is source of truth). - API endpoints under /customs/* (role-gated): overview, pipeline, reports, activity, scan (auto-detect across all adapters), shipments CRUD, CFIA, tracker health/config/resync, webhook receiver at POST /webhooks/paps-status with shared-secret auth. - 10 broker pages matching _ref/[login to view URL] (9000-line reference). Tailwind v4 ldx-* tokens + animation keyframes pre-wired. - 8 modals: Detail Drawer, Add Customs Request, Driver Upload Preview, Override Confirm, Customer Portal Preview, Broker Compose, Add Broker, Broker Detail. - Tracker stabilization tasks (the sidecar works but is brittle): capture the real Zipments API endpoint per README instructions, add retries + exponential backoff + per-adapter circuit breakers, persist the watchlist (currently in-memory), add adapter health telemetry surfaced at /customs/feeds. 2. Live Tracking — Complete End-to-End Backend foundation exists ([login to view URL], [login to view URL], [login to view URL]). Broker page is a 364-line partial. Finish: - Background GPS ingestion from the Expo mobile app → tracking pipeline (offline-queue aware) - WebSocket fan-out to broker fleet map + customer portal tracking page - Geofenced auto-milestone triggers (ARRIVED_PICKUP / ARRIVED_DELIVERY) with configurable radius - Routed ETA (Mapbox / HERE / OSRM — justify your pick) replacing client-side haversine fallbacks - Breadcrumb history + map replay on broker load detail - Broker fleet overview at /tracking 3. Sales Module (greenfield) No code exists. Lead → quote → booking pipeline for broker sales reps: - Leads (contact, company, source, stage, owner, activity log) - Quote builder with rate-confirmation PDF + email-out - Pipeline kanban + forecast dashboard - Reuse existing companies/users — don't duplicate CRM bits - New SALES role alongside existing ADMIN / OPS / ACCOUNTING 4. Load Marketplace — Complete Frontend scaffold exists (/marketplace/[login to view URL], ~658 lines); no backend module. Build: - New NestJS module with posting + bidding endpoints (brokers post, carriers bid) - One-click "post to marketplace" from existing Load records - Bid submission + broker accept/counter/decline - Filters: lane, equipment, weight, pickup window, rate range - Notification fan-out via existing notifications module - Audit trail via existing audit module - Polish frontend to align with agreed UX 5. Accounting — Complete + QBO Scaffolded: [login to view URL] 512 lines, [login to view URL] 173 lines, /accounting/[login to view URL] 1426 lines. Complete: - AR: customer invoicing tied to delivered loads, aging buckets, payment application - AP: carrier settlements, advance/fuel advance, detention/layover line items - Invoice PDF generation + email-out - QuickBooks Online sync (required): OAuth, invoice push, customer/vendor mapping, idempotent sync - Finance reports: revenue by customer/carrier/lane, margin analysis, DSO - Role-gated to ACCOUNTING + ADMIN 6. Issues — Complete Scaffolded: [login to view URL] 265 lines, [login to view URL] 123 lines, /issues/[login to view URL] 379 lines, test specs in place. Complete: - Triage workflow: assignment, severity escalation, SLA tracking - Issue types beyond OTHER — damage, overage/shortage, detention, refused, customs-hold, reefer-breach - File attachments (photos, documents) wired to existing documents module - Timeline integration — issue events surface in load timeline visible to customer portal - Email + push notification fan-out via existing notifications module - Resolution workflow with root-cause categorization for reporting - Ops dashboard: open issues by severity, aging, owner load --- Must-Have Skills (non-negotiable) - 4+ years TypeScript production experience - NestJS — modules, guards, interceptors, Prisma integration, [login to view URL] gateways - [login to view URL] 14 App Router + Tailwind v4 (@theme, @reference) - Prisma + Postgres — migrations, indexing, multi-tenant scoping - Expo React Native — background location, offline queues, push notifications - Real-time systems — [login to view URL] rooms, presence, reconnection - Financial/billing experience — invoicing, PDF generation, accounting sync --- How to Apply Include in your proposal: 1. One paragraph on a similar platform you shipped — multi-module monorepo, live tracking, scraper infrastructure, or accounting/QBO. No generic pitches. 2. GitHub link to NestJS or [login to view URL] work you wrote. 3. Proposed milestone breakdown and price per module (or hourly + weekly cap). 4. Hours/week, time zone, earliest start date. Put "ldx-stack" at the top of your proposal so I know you read this in full.
Project ID: 40392217
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133 freelancers are bidding on average $628 USD for this job

Hi there, I am the best here! Please check out my profile and see what others have to say about the work I've done related to the skills you're looking for. Hope to work together soon. Thanks!
$500 USD in 7 days
6.5
6.5

ldx-stack Juggling six unfinished modules while your platform’s core is already live must feel like trying to manage a border crossing with half the lanes closed. It’s draining to see bottlenecks in customs integration and live tracking, especially when every delay or brittle scraper threatens reliability for both customers and drivers. You deserve a production-ready system where modules like Customs Operations and Live Tracking work seamlessly, with every piece integrating smoothly and every status update just where it should be. You will get each module delivered clearly and fully, with APIs and UI wired to spec, all data flows stabilized, and features like accounting and issues exactly as described. First, I’ll review the existing monorepo and module scaffolds for quick alignment. Next, I’ll deliver each module in the priority order you set, ensuring full integration and testing. Finally, I’ll polish the UI and workflows for a frictionless experience across web and mobile. Which module is giving you the most trouble right now?
$524 USD in 7 days
4.1
4.1

ldx-stack ✋ Hi There!!! ✋ The Goal of the project:- TO COMPLETE AND DELIVER A FULL PRODUCTION READY MULTI MODULE FREIGHT AND CUSTOMS PLATFORM USING NESTJS NEXTJS AND EXPO WITH REAL TIME TRACKING ACCOUNTING AND MARKETPLACE FEATURES I have carefully reviewed your complete LDX platform requirements and understand this is a large scale production logistics system where stability, modular architecture and real time performance are critical. I am the best fit for this project because I specialize in complex monorepo systems with backend heavy logic, real time data flow and scalable SaaS architecture. Customs module with Prisma models, NestJS integration with tracker sidecar, and broker workflows with real time status sync Live tracking system with GPS ingestion, WebSocket fanout, geofencing logic and optimized ETA calculation Accounting, marketplace and issues modules with financial workflows, QBO integration, notifications and role based access I will also handle API development, database management, UI implementation, testing, microservices coordination and full source code delivery at project completion with clean production ready structure. I have 9+ years experience as a full stack developer working on large scale SaaS, logistics platforms and real time distributed systems. I have delivered similar multi module enterprise applications with tracking and financial integrations. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$559 USD in 7 days
3.7
3.7

ldx-stack Hello, With over 5 years of experience in TypeScript, I have successfully delivered complex, multi-module monorepos involving live tracking systems, scraper infrastructure, and accounting integrations, including a recent freight logistics platform with real-time updates and robust billing modules. You can review my work on [GitHub link]. Proposed Milestones: - Customs Operations API & UI: $12,000 (4 weeks) - Live Tracking Completion: $10,000 (3 weeks) - Sales Module Development: $8,000 (3 weeks) - Load Marketplace Finalization: $9,000 (4 weeks) - Accounting & QBO Sync: $11,000 (4 weeks) - Issues & Workflow Enhancements: $6,000 (2 weeks) Total Estimate: $56,000 over approximately 20-22 weeks, working 30 hours/week in EST, earliest start upon project agreement. What are your preferred tools for project management and communication during development?
$555 USD in 4 days
3.4
3.4

Hi there, and warm greetings. I’m Farhan Shabbir, a professional full stack developer with strong experience in logistics platforms and multi-tenant systems. I understand LDX is a production freight and customs platform for cross-border trucking, and you need support refining and scaling core modules like authentication, loads, carriers, drivers, and stops within a reliable shipping workflow. I can help strengthen and extend your platform with a structured, scalable approach: ◉ Multi-tenant authentication with secure role-based access control ◉ Robust load management system with real-time status tracking ◉ Structured modules for carriers, drivers, and route stops ◉ Clean API architecture for smooth integrations and data flow ◉ Performance optimization for handling production-level operations My focus is on building stable, maintainable systems that support real logistics workflows while remaining flexible for future growth. I ensure the platform stays efficient, secure, and easy to manage as your operations scale. I work closely with your team, communicate clearly, and deliver solutions that align with your production needs. Risk-Free Guarantee → No upfront payment. Pay only when satisfied, with full money-back assurance.
$250 USD in 1 day
0.0
0.0

Hello, I understand the task and will ensure your expectations are me. I am an expert with 4 years of experience in Backend Development, Frontend Development, API Development. See my profile for recent work. Looking forward to your reply. Thanks, Syeda Tahreem
$380 USD in 7 days
0.0
0.0

Hi, I have completed many projects using the MERN Stack. I can do this job very well according to your needs. I will start immediately Thanks
$500 USD in 20 days
0.0
0.0

Having spent over three years specializing in backend development, I am no stranger to the intricacies involved in building scalable, API-driven platforms. My fluency in Django, one of the frameworks that are strongly tied to NestJS, makes me an ideal candidate for your project. Additionally, my experience with PostgreSQL aligns perfectly with the database needs of your project. I can provide you with a robust foundation to build the Customs Operations and Live Tracking modules you have listed. While my main proficiency has been Django/DRF, my ability to quickly adapt is one of my strengths. I am confident in ramping up on unfamiliar codebases and quickly implementing real-world logic - a skill that will surely come into play as we integrate resyncs and health telemetry into your production environment. My experience in handling sensitive data will lend itself well for logistics and customs operations. To round out my technical skillset, I've also worked extensively with Tailwind CSS which powers your frontend stack. Drawing from these experiences, my dedication to reliability and peak performance, and my knack for efficient collaboration, I genuinely believe I'm the best fit for helping complete these final modules atop LOADEX.
$500 USD in 7 days
0.0
0.0

My name is Hilal Mujaddadi, and I am writing to express my interest in the project you have advertised. With a solid background in making websites and a proven track record of successfully implementing projects like this, I am confident that I possess the skills and experience necessary to excel in this role. Throughout my career, I have demonstrated a strong proficiency in MERN stack and Next js, having completed numerous projects. My expertise in these specific languages sets me apart, and I am dedicated to delivering high-quality work that meets and exceeds expectations. Regarding the cost of undertaking this project, I am prepared to offer a competitive proposal. I understand the importance of delivering results efficiently and effectively, and I am committed to ensuring that the project is completed in a timely manner without compromising on quality. I invite you to review my profile on freelancer, where you will find a comprehensive portfolio showcasing the projects I have completed using MERN stack and Next js. I am confident that my skills and experience make me a strong candidate for this position. Please let me know your preferred timeline for the project, and rest assured, I will prioritize meeting and exceeding your expectations. Thank you for considering my application. I look forward to the opportunity to contribute to your team and help you achieve your objectives.
$250 USD in 7 days
0.0
0.0

ldx-stack Cross-border freight Canada/US with customs tracking, live GPS, and QBO sync - this is exactly the kind of multi-tenant logistics system I build. Similar system I shipped: Infomance DAAS - a geo-data platform processing 11.7M features across 302 Brazilian municipalities. Stack: Go + Fiber, PostgreSQL + PostGIS, FastAPI, Next.js. Technical read: Customs - Redis cache before Postgres. Live Tracking - OSRM self-hosted beats Mapbox. QBO - Done OAuth refresh before. Questions: Modules greenfield or extending? State of shared DTOs? SLA for tracker polling? Proposal: 750 USD fixed. 10h/week, UTC-3, available Monday. - Raphael | Staff Engineer | Go, NestJS, PostGIS
$500 USD in 3 days
0.0
0.0

With over a decade of experience in full-stack web and mobile application development, I am the ideal candidate for your project. Throughout my career, I have worked with a number of modern technologies closely aligned with your stack: NestJS, NextJS, and even Expo. With a deep understanding of integrating APIs into applications, I can expertly handle your requirement to integrate the paps-pars-tracker microservice into the Customs Operations module. My proficiency in using Postgres as a database management system and my strong grasp of the frontend/backend development and API design make me well-suited to build the all six modules that you require. Additionally, I excel in employing tailored design systems such as Tailwind v4 (ldx-* design tokens pre-wired) which aligns with your needs. I take great pride in delivering robust, scalable digital solutions and highly value end-to-end client satisfaction. My commitment to quality, effective communication skills, and capability to deliver on time will surely drive the success of this project. Together with a small team of UI/UX designers and graphic experts when needed, we guarantee a highly professional approach to handle this project with top-notch results. Let’s partner up to bring LDX to its full potential!
$250 USD in 10 days
0.0
0.0

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