Senior Software Engineer I (Full Stack, Payments)

Ovii's Interpretation of the Role

Senior Software Engineer I (Full‑Stack, Payments) at SpotOn builds high‑traffic, AI‑enhanced restaurant POS and payment solutions. The role blends backend Go expertise with front‑end flexibility and hands‑on technical leadership in a hybrid Kraków/Gdańsk setting.

Role Snapshot

• Full‑stack engineering
• Payments domain
• Backend focus (Go)
• AI‑augmented development
• Technical leadership
• Hybrid onsite (Poland)

Must-Have Requirements

• Go (Golang)
• AI workflow integration
• Data structures & algorithms
• English (B2) proficiency
• Strong communication
• high‑traffic production systems
• U.S. work authorization required
• Visa sponsorship not available

Nice-to-Have Signals

• PHP
• AWS / Terraform / Kubernetes
• Payment processing knowledge
• Mentoring & code reviews
• React / JavaScript
• payment processing
• cloud infrastructure
• full‑stack development
• Payments
• Fintech

Work Setup

• Location: Kraków, Poland
• Work mode: HYBRID
• Relocation: Relocation package within Poland offered
• Employment type: Full-Time

Eligibility Gates

• Work authorization: U.S. work authorization required
• Visa sponsorship: no

Not Specified in JD

• Visa sponsorship
• Remote eligibility
• Education requirement
• Coding test

What You'll Likely Work On

• Own end‑to‑end feature delivery and incident resolution across the stack.
• Untangle complex, high‑stakes system problems in a high‑traffic environment.
• Shift between front‑end (React/JS) and infrastructure tasks (AWS, Terraform, Kubernetes) as needed.
• Leverage AI tools daily to write better code and accelerate debugging.
• Provide technical leadership, guide architecture decisions, and proactively address tech debt.
• Collaborate in person at Kraków or Gdańsk offices 2‑3 times per week.

Good Fit If You Have

• Enjoys ambiguous, “figure‑it‑out” challenges.
• Comfortable working across the full stack, including React and JavaScript.
• Experience with cloud platforms and infrastructure tooling.
• Background in payment gateways, ledger systems, or PCI compliance.
• Naturally raises the bar through thoughtful code reviews and mentorship.