Senior Backend Architect – Real-Time Planning Engine on Dynamics 365
2 days ago
Job description
Project Overview
We are looking for a senior backend developer / system architect to design and build a real-time, collaborative planning engine on top of existing Microsoft Dynamics 365 (Dataverse) data.
Actual stock (updated daily)
Weekly forecast
Daily delivery (derived from forecast)
Port calls (vessel arrivals)
Allocation per port call
Vessel capacity per port
Currently, recalculation of allocation and stock is performed once per day (batch process). This is not sufficient for operational planning.
We need an interactive simulation layer that allows multiple users to plan collaboratively and see instant recalculation results.
Business Context:
Operational planners currently use Excel to manage rolling 4–6 week planning per port.
The Excel model works as a time-based matrix:
One row per customer
Three columns per calendar day with calculated stock, calculated deliveries and allocation on port call dates
Port call days highlighted
Allocation entered on port call dates
Stock calculated daily using a simple formula
We want to replicate and improve this logic inside a structured, collaborative system.
Core Planning Logic:
The engine must:
Always start from actual stock (Day 0) retrieved from Dynamics.
Simulate a rolling 6-week calendar horizon (calendar-based, not port-call-based).
Apply the following calculation per customer:
Stock[day] = Stock[day-1] + Delivery[day-1] - Allocation[day]
Allow editing of:
Daily delivery (derived from weekly forecast)
Allocation per port call
Automatically recalculate:
Stock per customer per day
Total allocation per vessel
Remaining vessel capacity per port call
Vessel available capacity is already calculated in Dynamics and does not need to be rebuilt.
Key Requirements
Real-time recalculation on change (not on save, not batch-based)
Full 6-week matrix recalculation in memory
Shared "Active Planning Scenario" used by multiple concurrent users
Clear separation between:
Official Dynamics data
Planning scenario data
Explicit "Publish" action to commit planning allocation to official allocation
Stock values must always be calculated, never manually stored.
Technical Expectations
We are NOT looking for:
Power Automate flow-based recalculation
Plugin-per-record logic
On-save recalculation
Heavy CRM-style form logic
We ARE looking for:
Backend calculation service (Azure Function / .NET / )
Stateless calculation engine design
Efficient in-memory matrix recalculation
Experience integrating with Dynamics 365 / Dataverse APIs
Experience handling shared state and optimistic concurrency
Frontend UI can be basic in Phase 1. The core priority is a correct and scalable calculation engine.
Deliverables:
Architecture proposal
Data model for PlanningScenario and PlanningAllocation
Backend recalculation engine
API integration with Dynamics
Support for multi-user shared planning scenario
Technical documentation
Ideal Candidate:
Strong backend architect
Experience with simulation or planning systems
Comfortable designing deterministic calculation engines
Understands collaborative state management
Able to propose clean architecture, not just code
This is an initial phase project (6–10 weeks) focused on core architecture and calculation logic, with potential extension for UI refinement and expansion to additional ports.
Contract duration of 1 to 3 months. with 30 hours per week.
Mandatory skills:
Software Architecture & Design, Python, API, Java
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