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Senior Software Engineer I (Full Stack, Payments)

Kraków, Lesser Poland Voivodeship, Poland💼 Full-time💰 $19,500–$24,400🗓 2026-06-26 → 2026-09-26

Core

Senior Full Stack Engineer building high-traffic payment processing systems and POS features for independent restaurants.

Role type

Senior IC Full Stack Software Engineer (Payments)

Builds

Point-of-sale systems, AI-powered profit tools, and payment transaction flows

Domain

Fintech / Restaurant Technology

Deliverable

production ML models | product features

Required skills

Golang, PHP, React, JavaScript, AWS, Terraform, Kubernetes, data structures, algorithms, design patterns, payment gateway integration, PCI compliance knowledge

Preferred skills

AI tool integration, mentoring, full-stack flexibility, cloud infrastructure management

Responsibilities

Own end-to-end feature delivery from ticket to production, solve high-complexity system puzzles, provide technical leadership and code reviews, leverage AI tools for code generation and debugging, navigate fintech payment processing complexities

Seniority

Senior, hands-on IC

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