Narrative Designer for Indie Unity Game

I’m developing an indie video game in Unity (single-player, snowy environment with robots and technological systems).
I’m looking for a narrative designer to help improve and structure the story, dialogues, and worldbuilding.

The game already has a solid narrative and gameplay foundation:
-main mission involving terminals, blackout events, generators, and a pursuing robot
-narrative events (sabotaged airplane, evidence to recover, final escape)
-minimalist (low poly) snow atmosphere

I’m looking for someone who can help me:
improve the plot without completely changing it
make radio dialogues (3 characters + robot) stronger and more impactful
better structure narrative missions
give coherence and emotional weight to the story
suggest realistic and sustainable ideas suitable for an indie project

Requirements
experience (including indie projects) in narrative design / storytelling for video games
ability to write natural and believable dialogues
sensitivity to sci-fi / thriller atmospheres

What I offer
-collaboration on a real indie project
-budget to be discussed (small project, limited scope)
-possibility of being credited in the game
-direct communication with the developer (me)

How to apply
Please send:
a short presentation
examples of previous work (games, stories, dialogues, scripts)
a quick idea on how you would improve a sci-fi story involving AI/robots