Swap Contract Upgrade & Fixes

I already have a live Solidity swap contract paired with its own ERC-20 token. Before I push the next release, I need an experienced smart-contract developer to jump in, modify the existing swap logic, and make sure both contracts work seamlessly together.

The core tasks are:
• Update and expand current functionality – I have a short list of new features to add, plus a few existing functions that need refinement for better UX and gas use.
• Hunt down and fix the bugs that have shown up in testing and on-chain analytics.
• Refactor any overlapping code in the token contract so it remains fully compatible with the refreshed swap contract.

I’ll provide the current repos, unit tests, and a changelog of desired upgrades. Deliverables are the updated Solidity files, migrations or deployment scripts, and passing test coverage that proves the new features and bug fixes are solid. If you regularly work with Hardhat or Foundry, that’s a plus, but I’m flexible on tooling as long as the end result is clean, audited-style code that compiles without warnings on the latest stable compiler.

Ping me with examples of previous swap or DEX-related work and a rough timeline for turning this around.