Messa, Inc.
via Ashby
Senior Full Stack Engineer
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 22h ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 270d ago
The date the source published, not the day we noticed it (2025-12-18). Last seen at its source 3h ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
Argentina
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay $6,062–7,250/mo
Middle 50% of 8 listings that do state pay — Engineering · Senior · Argentina · USD/month. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
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ashby employer's own board first seen 11d ago · last seen 3h ago
The listing
Role Overview
We're looking for a Senior Full Stack Engineer to help design, build, and ship core parts of our product. You'll work across the entire stack, with a strong emphasis on crafting polished, intuitive user experiences, while also building reliable backend systems and integrating AI deeply into the product.
We’re an early stage full of energy team. Everyone wears multiple hats, moves fast, and cares deeply about what we're building. We need someone with a product mindset: not just an engineer who executes specs, but someone who thinks about why we're building something and how users will experience it.
What You'll Do
Build and own end-to-end product features across the full stack.
Design and implement clean, high-performance user interfaces. This is where your craft shines.
Develop and maintain robust APIs and backend services.
Integrate AI agents and LLM-powered workflows into the product.
Participate in code reviews and help maintain a high quality bar across the codebase.
Think like a product builder: bring ideas, question assumptions, and help shape what we ship.
What We're Looking For
Must-haves:
Expert-level proficiency in React and modern TypeScript.
Basic backend experience. You're comfortable designing APIs and working with server-side systems.
Sharp eye for UI/UX. You build interfaces that feel polished and intuitive, not just functional.
Experience working with AI/LLM tools in your workflow and integrating AI capabilities into product features.
Product mindset. You think about the user, not just the ticket.
High-quality code output with minimal review overhead.
Comfort with ambiguity and speed in an early-stage environment.
Nice to have:
Experience building SaaS products from early stages.
Python coding skills.
Experience building browser extensions.
Experience with desktop app development (Electron, Qt, etc.).
Familiarity with AWS or another major cloud platform.
Experience using Docker across development and production.
Experience with AI agent orchestration or agentic workflows.