Staff Full Stack Engineer, Payments

About GoodLeap:

GoodLeap is a technology company delivering best-in-class financing and software products for sustainable solutions, from solar panels and batteries to energy-efficient HVAC, heat pumps, roofing, windows, and more. Over 1 million homeowners have benefited from our simple, fast, and frictionless technology that makes the adoption of these products more affordable, accessible, and easier to understand. Thousands of professionals deploying home efficiency and solar solutions rely on GoodLeap’s proprietary, AI-powered applications and developer tools to drive more transparent customer communication, deeper business intelligence, and streamlined payment and operations. Our platform has led to more than $27 billion in financing for sustainable solutions since 2018.

GoodLeap is also proud to support our award-winning nonprofit, GivePower, which is building and deploying life-saving water and clean electricity systems, changing the lives of more than 1.6 million people across Africa, Asia, and South America.

Position Overview

We're looking for a passionate and experienced Staff Full-Stack Engineer to join our team that owns our payments processing APIs, web app and mobile app. In this role, you'll help design, build, and scale our payments platform, collaborating with product managers, designers, and fellow engineers to deliver secure, performant and reliable solutions. You'll take ownership of high-impact initiatives and play a key role in shaping our technology and team.

What You'll Do

• Design, develop, and maintain scalable microservices, APIs, micro-frontend-based web app, and a Flutter-based mobile app

• Build secure, reliable, and performant payment solutions integrated with Stripe and QuickBooks

• Collaborate cross-functionally to turn business needs into technical solutions

• Drive all phases of the software development lifecycle - from design through deployment

• Mentor junior engineers and advocate engineering best practices in system design, security, and code quality

• Champion operational excellence through strong documentation, monitoring, and alerting

• Troubleshoot and resolve issues promptly to ensure high system availability

What You Bring

• 8+ years of full-stack development experience with Node.js, TypeScript, NestJS, React, HTML, and CSS

• Experience with cloud infrastructure, preferably AWS

• Strong system design skills with a focus on scalability, reliability, and security

• Excellent communication skills and a collaborative, leadership-oriented mindset

• Passion for clean, maintainable code, mentoring others, and continuous improvement

Bonus Points

• Familiarity with Flutter or mobile development

• Knowledge of Stripe, QuickBooks, or similar payment platforms

• Experience with Datadog or similar observability tools

• Experience in FinTech or other highly regulated industries

• Previous work with real-time payment processing systems

Why Join Us?

• Work on impactful projects that enable sustainability and energy solutions.

• Competitive salary and benefits package.

• Opportunity for professional growth in a collaborative, inclusive, and fast-paced environment.

• Work with a passionate, forward-thinking team dedicated to making a difference.