Senior / Staff Full-Stack Engineer (Node.js + AWS)

About Blue Language Labs

Every generation gets one protocol moment. TCP/IP. SMTP. HTTP. A small team writes the spec, ships the first implementation, and fifteen years later the entire world runs on it without knowing who built it. We’re at that moment for economic coordination.

AI agents are being deployed everywhere, right now — negotiating, committing, paying, settling on behalf of every company that wants to stay competitive. In a few years there will be billions of them. The problem: there is no protocol for what happens between them. An agent can be smart. It cannot be governed. It can pay. It cannot make a payment conditional on something that actually happened. Agents from different organizations can talk. They cannot safely coordinate across company boundaries.
Nobody has built that layer. We’re building it.

Blue is a protocol for structured, verifiable, multi-party agreements that execute deterministically, leave an immutable audit trail, and run on existing financial rails. Smart contracts without blockchain. Governance without a platform. Trust without a middleman.

• PayNotes — programmable payments with conditional capture, milestone releases, automatic refunds, and partner settlement. Logic embedded directly into money movement.
• MyOS — orchestration layer for merchants and agents. Agentic workflows and cross-platform trust, without touching the protocol directly.

The Role

You will own features end-to-end — from the React component a merchant clicks to the Lambda function that settles their transaction to the AWS infrastructure that keeps it all standing. No handoffs between "front" and "back". No waiting for someone else to unblock you.

This is a high-trust, high-autonomy role. You'll work directly with the founding team, your decisions will ship to production fast, and yes — you'll be on the hook when something breaks.

What you get?

• Competitive B2B compensation based on experience
• Equity — own a piece of what you build
• Fully remote work in an async-first environment
• Direct collaboration with the founding team
• High autonomy and fast decision-making
• Small team, outsized impact
• Work on technology that is genuinely novel
• End-to-end ownership across product, systems, and production

Protocols don’t get built by committees. They get built by small teams who understood the problem before anyone else did.

What You'll Do

• Design and ship full-stack features across payments, document workflows, and agent orchestration

• Build and maintain stateful systems that demand idempotency, auditability, and safe retry logic

• Own AWS infrastructure — architecture decisions, serverless systems, IaC (SAM / CloudFormation), monitoring, cost, and security

• Work with PostgreSQL-backed services and event-driven components

• Use modern AI tooling (LLMs and coding agents) to accelerate development and experimentation