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Fullstack Software Engineer (AI-Native)

Proton.aiEuropeEngineering
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Salary
$80K - $100K USD
Job type
Full-time
Posted
12 May 2026
Status
Open · checked 7d ago

About this role

Proton.ai is hiring a Fullstack Software Engineer (AI-Native) to design and ship end-to-end features for its distribution CRM platform. This remote opportunity is well-suited for a hands-on generalist with strong computer science fundamentals and experience leveraging AI agentic tools for rapid product delivery.

Role Overview

The Fullstack Software Engineer (AI-Native) owns the end-to-end delivery of platform features, moving fluidly across different layers of the technology stack. This position centers on building AI-native software using tools like Claude Code and Cursor agent mode as first-class collaborators. The engineer works closely with product managers, designers, and customers to scope, build, deploy, and monitor scalable solutions. Periodic travel to customer sites is required to support onboarding, understand enterprise resource planning configurations, and gather direct user feedback.

Key Responsibilities

Own the complete delivery lifecycle of features, starting from refining tickets through to deployment, monitoring, and iteration.
Utilize agentic coding tools at a high level to structure context, run multiple agents in parallel, and ship production-ready code.
Move fluidly across TypeScript, Vue, Python, SQL, and various infrastructure touchpoints as demanded by the work.
Collaborate inside a squad model featuring two-week sprints, daily standups, refinements, retrospectives, and code reviews.
Design robust schemas, queries, and application programming interfaces that maintain performance and reliability at scale.
Contribute to internal engineering practices by establishing better patterns, tooling, and team-wide methods for utilizing AI.
Travel to customer sites a few times a year to observe sales floors and warehouses for product improvement insights.

Requirements

Minimum of 5 years of professional software engineering experience with demonstrable, production-level fullstack delivery.
Strong core fundamentals with the ability to read stack traces, reason about query plans, debug race conditions, and validate agent outputs.
Daily, hands-on experience using agentic development tools such as Claude Code, Cursor agent mode, or Codex for shipping real features.
Generalist instinct with comfort jumping between Vue, Python, SQL, infrastructure, and third-party integrations.
Solid database and systems capabilities for designing efficient schemas, managing indexing tradeoffs, and reasoning about distributed systems.
Startup mindset characterized by pragmatism, speed, high autonomy, comfort with ambiguity, and closeness to users.
Strong communication skills capable of translating complex technical decisions to product managers, designers, and customers.

Nice to Have

Prior experience building integrations with distribution enterprise resource planning systems like Epicor Eclipse or P21.
Experience building or integrating agentic products, Model Context Protocol servers, tool-using agents, or prompt engineering at the system level.
Background working at an early-stage software-as-a-service startup.

Skills and Tools

Python
SQL
TypeScript
Large Language Models
Apache Airflow
Vue.js
Agentic Dev Tools (Claude Code, Cursor)

Salary and Benefits

Base salary ranging from $80,000 to $100,000 per year, depending on prior experience.
Company stock options.
Flexible work schedule with high autonomy.
Unlimited paid time off alongside 10 company-paid holidays.
Twelve weeks of fully paid parental leave covering primary, secondary, adoption, and fostering situations.
Annual company-paid offsites.

About the Company

Proton is building the artificial intelligence operating system for the wholesale distribution industry, unifying customer relationship management, product information management, e-commerce intelligence, and order entry into a single platform. Hundreds of leading industrial, HVAC, and electrical distributors run on Proton, backed by investors including Felicis Ventures and Battery Ventures.

How to Apply

Interested candidates should visit the official Proton.ai careers page to submit an application.

Skills and tech stack

PythonSQLTypeScriptLLMAirflow

Questions candidates ask

What is the salary range for this role?

The base salary ranges from $80,000 to $100,000 per year, depending on experience, and includes equity and full benefits.

Where is the job located?

This is a remote position.

What experience level is required?

Candidates must have at least 5 years of software engineering experience with real, demonstrable fullstack delivery in production systems.

What tools are used for AI-assisted development?

Engineers use agentic development tools such as Claude Code, Cursor agent mode, Codex, or equivalent tools daily to design, build, and ship features.

Does the role require any travel?

Yes, expect occasional travel to customer sites a few times a year to understand enterprise resource planning configurations and support onboarding.

Ready to apply?

The application is on the official Proton.ai careers page.

Apply on company site