Staff Engineer - Fintech

mewssystems; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Remote-first work

Home office budget

Relocation options after one year

Ability to work abroad for a few weeks

Job summary

mewssystems is seeking a technically hands-on engineering lead to shape the foundations for payment integrations across providers and regions. You will drive architectural standards, build AI-assisted tools, and coach engineers without direct reports to ensure reliable payment experiences.

You will shepherd migrations, broad refactoring, and long-term decisions, maintaining consistency across changing providers while empowering teams to own outcomes.

Qualifications

• Hands-on experience integrating payment service providers or payment processors.
• Strong engineering judgment, including reusable architectural standards vs one-off solutions.
• Experience building AI agents, skills, evaluations, or tools used by other engineers, with clear human oversight considerations.
• A systems mindset turning engineering lessons into reusable architecture and tooling.
• Ability to influence across engineering and product roles without direct reports.

Responsibilities

• Design and maintain engineering agents, skills, and context encoding architecture and quality checks for payment work.
• Develop an AI first-response system for payment support questions with clear handover criteria.
• Lead difficult technical work across payment provider integrations and long-term architectural decisions.
• Keep integrations aligned with changing providers and regional requirements while enabling engineers to own delivery.
• Coach engineers and improve underlying tools and practices to address recurring deviations.

Skills

Payments integration

AI systems design

Architectural judgment

Cross-functional influence

Tools

Software architecture

Code review practices

Job description

Role overview

Shape the engineering foundations for a team building payment integrations across providers and regions. The role combines hands-on technical leadership with tools and AI systems that help product engineers deliver consistent, reliable payment experiences. It has no direct reports; influence comes through architecture, shared standards, and coaching.

Responsibilities

• Design and maintain engineering agents, skills, and context that encode architecture, review practices, and quality checks for payment work.
• Develop an AI first-response system for payment support questions, with clear criteria for when a person should take over.
• Lead difficult technical work, including migrations, broad refactoring, and long-term architectural decisions across payment provider integrations.
• Keep integrations consistent as providers and regional requirements change, while enabling engineers to own and deliver their work.
• Coach engineers and address recurring deviations by improving the underlying tools or practices.

Requirements

• Hands-on experience integrating payment service providers or payment processors.
• Strong engineering judgment, including the ability to distinguish reusable architectural standards from one-off solutions.
• Experience building AI agents, skills, evaluations, or tools used by other engineers, and a clear understanding of where human oversight is essential.
• A systems mindset that turns engineering lessons into reusable architecture and tooling.
• Ability to influence and collaborate across engineering and product roles without relying on direct reporting lines.

Nice to have

• Experience in hospitality, travel, or another operationally complex B2B software environment.
• A record of sharing technical work publicly or coaching other engineers.

Benefits and work setup

• Remote-first, flexible work, including the option to work abroad for a few weeks each year.
• Home office budget and monthly work-from-home allowance; relocation options may be available after one year.
• Additional benefits vary by location. The source lists compensation ranges for several countries, but does not establish which range applies to a particular candidate.