Staff Backend Engineer — Payments & FinTech APIs

GoodLeap; Seattle (WA); On-site; USD 171,000 - 194,000; Full time

Job summary

GoodLeap is seeking a Staff Software Engineer to help build backend services that power contractor financial tools, including secure payments and financial workflows. You will design scalable APIs, integrate with internal and external systems, and collaborate across Product, Design, Finance, Risk, and Operations to deliver resilient solutions.

You will mentor engineers, promote strong system design, security, and observability while driving the full software lifecycle from design to post-launch

Qualifications

• 8+ years of software development experience, with deep backend expertise in Node.js, TypeScript, and NestJS.
• Experience with cloud infrastructure, preferably AWS.
• Strong system design skills, with experience building scalable, reliable distributed systems and APIs.
• Excellent communication skills and a collaborative, leadership-oriented mindset.
• Passion for clean, maintainable code, mentoring others, and continuous improvement.

Responsibilities

• Architect, design, and evolve scalable, high-performance APIs and backend services for contractor financial tools.
• Build secure and reliable capabilities that support payments and other financial workflows.
• Integrate with internal and external systems while keeping services maintainable and extensible.
• Collaborate cross-functionally with Product, Design, Finance, Risk, and Operations to translate business needs into resilient technical solutions.
• Drive the full software development lifecycle, from technical design and implementation through testing, deployment, and post-launch support.
• Mentor and guide engineers across the team, setting high standards for system design, security, scalability, and code quality.
• Champion operational excellence through strong practices around observability, documentation, monitoring, alerting, and incident response.

Skills

Node.js

TypeScript

NestJS

AWS

Backend design

Job description

GoodLeap is seeking a Staff Software Engineer to help build backend services that power contractor financial tools, including secure payments and financial workflows. You will design scalable APIs, integrate with internal and external systems, and collaborate across Product, Design, Finance, Risk, and Operations to deliver resilient solutions.

You will mentor engineers, promote strong system design, security, and observability while driving the full software lifecycle from design to post-launch