Senior AI-Driven Fullstack Engineer

flyer-one-ventures; Warszawa; On-site; PLN 180,000 - 270,000; Full time

Job summary

flyer-one-ventures is seeking a Senior Fullstack Engineer to own features from database to UI in our AI-native squads. The stack runs on AWS with PHP/Laravel and Node.js/NestJS for the backend and React/TypeScript on the frontend, using AI-assisted workflows daily.

You will deliver end-to-end features across all layers, ensuring reliability in payroll systems, and collaborate with product and design in a small squad to scope, estimate, and prioritize work.

Qualifications

• 5+ years of professional software engineering experience across backend and frontend.
• Backend in PHP/Laravel or Node.js/NestJS; frontend in React/TypeScript.
• Experience with AWS, relational databases, and API design (REST/GraphQL).
• Familiar with AI-assisted development and testing practices.

Responsibilities

• Own and deliver features end-to-end across the full stack (backend services, APIs, frontend interfaces, and data layers).
• Design, build, and operate production systems in a payroll domain where correctness and reliability are non-negotiable.
• Use AI coding tools as a daily force multiplier for writing, reviewing, and refactoring code.
• Write and maintain automated tests with AI-assisted generation, aiming for high coverage with minimal manual effort.
• Participate in lean team rituals: async-first communication, lightweight code reviews, and continuous deployment.
• Collaborate closely with product and design in a small squad to scope, estimate, and prioritize work.
• Contribute to defining and evolving our AI-augmented engineering practices and toolchain.
• Take shared ownership of operational concerns: monitoring, alerting, incident response, and on‑call rotations.

Skills

Fullstack development

React/TypeScript

PHP/Laravel

Node.js/NestJS

AWS

API design

Testing fundamentals

Async communication

Ownership

Tools

AWS Cloud

REST APIs

GraphQL

Relational DBs

Job description

flyer-one-ventures is seeking a Senior Fullstack Engineer to own features from database to UI in our AI-native squads. The stack runs on AWS with PHP/Laravel and Node.js/NestJS for the backend and React/TypeScript on the frontend, using AI-assisted workflows daily.

You will deliver end-to-end features across all layers, ensuring reliability in payroll systems, and collaborate with product and design in a small squad to scope, estimate, and prioritize work.