Senior Software Engineer (Payments), Frontend

Senior Software Engineer

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 $30 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 Summary

We're looking for a passionate and experienced Senior Software Engineer to join the payments team at GoodLeap. In this role, you'll help design, build, and scale customer-facing payment products, ensuring they are secure, reliable, and performant. You'll collaborate closely with product managers, designers, and fellow engineers to deliver seamless payments experiences that power every transaction. This is a great opportunity for someone who thrives in a fast-paced environment and is eager to take ownership of key initiatives within a growing company.

Key Responsibilities

• Design, build, and maintain robust, scalable, and high-performance frontend applications that power GoodLeap's payments experience across web platforms, ensuring secure and seamless customer interactions.
• Own end-to-end delivery of features—from technical design through implementation, testing, and deployment—operating with a high degree of autonomy and accountability within a fast-moving team environment.
• Partner closely with product managers, designers, and backend engineers to deliver intuitive, reliable, and delightful payment experiences, driving alignment while maintaining strong engineering standards.
• Solve complex frontend challenges related to performance, scalability, resiliency, and security, particularly within payments and financial workflows.
• Establish and uphold best practices in frontend architecture, code quality, testing, and observability, including writing comprehensive unit and integration tests.
• Contribute to and evolve shared frontend systems (e.g., design systems, component libraries, micro-frontend architecture) to enable high team velocity and consistency across products.
• Proactively identify opportunities to improve developer experience, tooling, and processes, enabling the team to move faster while maintaining high quality.
• Stay current with emerging trends, technologies, and innovations in the payments space, and proactively bring new ideas and perspectives to the team to continuously improve our products and user experience.
• Operate effectively in a fast-paced, highly empowered team, where engineers are trusted to make decisions, challenge assumptions, and drive outcomes with minimal overhead.

Qualifications

• 5+ years of front-end software development experience using TypeScript, React, HTML, and CSS, building scalable and maintainable user interfaces.
• Experience integrating with RESTful APIs and third-party services (e.g., Stripe or other payment platforms), with an understanding of secure data handling in financial applications.
• Strong ability to design and implement performant, scalable, and resilient frontend architectures in complex, production environments.
• Experience working in cloud-based environments (e.g., AWS) and collaborating with backend systems built on microservices architectures.
• Excellent communication skills and a collaborative mindset, with a passion for clean code, continuous improvement, and delivering high-quality user experiences.
• Proven experience in ability to leverage AI tools in their work such as Claude or Codex.

Bonus Points

• 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.

$146,000 - $170,000 a year In addition to the above salary, this role may be eligible for a bonus.