Junior to Mid-level Software Engineer - AI First Full Stack - Custom AI Solutions LLC

Junior to Mid-Level Software Engineer — AI First, Full Stack Custom AI Solutions | Remote (Brazil) | Contract Engagement

About the Role We are looking for a junior-to-mid level Software Engineer to engage with our engineering team as a dedicated contributor on VoxaCor™ and BridgeNode™. You will collaborate with our senior engineering team building features, fixing bugs, and running quality assurance across the platform.

This is a real engineering role — not an internship, not a ticket-taker. You will be working on production AI systems from day one. We're looking for someone early in their career who wants hands-on experience building AI-powered products that are already in market.

This is a contract engagement. Applicants must have a registered legal entity in Brazil to contract through. This is a firm requirement and is not negotiable.

Key Responsibilities

Build and maintain full-stack features across web, voice, and SMS channels

Write clean, tested code against well-defined tickets and technical specs

Run QA across platform features — identify, document, and help resolve bugs

Assist in integrating LLM and voice pipeline components under senior guidance

Contribute to BridgeNode™ open-source framework and VoxaCor™ platform features

Participate in code review and grow your skills through direct collaboration with senior engineers

Tech Stack

Backend: Node.js, TypeScript, PostgreSQL, Docker

Frontend: React 19, TypeScript, Tailwind CSS, shadcn/ui, PWA

Voice & Telephony: Telnyx, Deepgram (STT/TTS), WebRTC, SIP

AI / LLM: Anthropic Claude, Google Gemini, Mastra orchestration

Infrastructure: Azure, GitHub Actions CI/CD, multi-tenant architecture

Compensation

Structure: Paid twice monthly in USD for work performed

On-Target Earnings: $24K–$36K USD - depending on experience

Qualifications

1–3 years of software engineering experience or equivalent demonstrated project work

Proficiency in TypeScript and React — you've built and shipped something real

Solid understanding of REST APIs and relational databases

Ability to read and understand existing codebases and contribute without breaking things

Professional English proficiency — written and verbal communication must be clear, accurate, and effective for async collaboration with a US-based team

Available to overlap with US Mountain/Pacific business hours

Registered legal entity in Brazil — required for contract engagement (not negotiable)

Strong Pluses

Any hands-on experience with LLM APIs or AI-powered features

Exposure to voice, telephony, or real-time streaming systems

Open-source contributions or a portfolio of personal/professional projects

Experience with Docker or cloud deployment (Azure, AWS, GCP)

Background in transpor