Contact person: Business Client

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Location: Riyadh, Saudi Arabia

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I already have the full Java class set written and running, but the way I modelled the associations between classes is producing unacceptable runtimes. All the heavy lifting happens inside those associations, and because they currently rely on Linked Lists they degrade quickly as the dataset grows.

What I need now is a Java-savvy partner to sit with me (screenshare or PR review is fine) and refactor the association layer so the big-O numbers drop to something closer to log n or constant time where possible. I’m open to swapping in smarter structures—HashMap, TreeMap, custom indices—whatever trims the complexity without breaking encapsulation or readability.

We’ll walk through the current code, profile the hotspots, sketch alternative designs, then implement and test. Deliverables are straightforward: the updated source files, a short note explaining the new relationships and their expected complexity, and a green JUnit suite that proves the refactor didn’t change external behaviour. If you have experience taming association-heavy domains in Java, let’s get this tightened up." (client-provided description)