Remote Principal Engineer, Payments Platform

United States Digital Space LLC; United States; Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Private Healthcare via AXA

Life Insurance

Pension scheme

Training allowance

Home office allowance

3 months abroad option

Job summary

United States Digital Space LLC is seeking a Principal Engineer - Payments to join the Architecture team, focusing on the payments domain. You will shape technical direction and support scalable, resilient systems used by millions of journeys worldwide.

The role blends system-level thinking with hands-on coding where needed and requires strong experience with payment flows, PSP integrations, and microservices.

Qualifications

• Experience in payments systems and PSP integrations.
• Experience with distributed systems and microservices.
• Strong architectural judgement and leadership.
• Hands-on when needed while guiding teams.
• Comfort with cloud platforms (AWS preferred).

Responsibilities

• Shape technical direction of payments platform.
• Design scalable, secure payment solutions.
• Support microservices-based architecture across teams.
• Lead architecture reviews and design discussions.
• Produce clear technical documentation and standards.
• Collaborate with external payment providers for integrations.

Skills

Payments systems

Distributed systems

Microservices architecture

Architectural leadership

Technical mentorship

Cloud platforms AWS

Tools

Kotlin

Java

DynamoDB

MySQL

Terraform

GitLab CI/CD

Job description

United States Digital Space LLC is seeking a Principal Engineer - Payments to join the Architecture team, focusing on the payments domain. You will shape technical direction and support scalable, resilient systems used by millions of journeys worldwide.

The role blends system-level thinking with hands-on coding where needed and requires strong experience with payment flows, PSP integrations, and microservices.