Backend Software Development Engineer III

Palmetto is a leading clean tech company on a mission to accelerate the transition to a clean energy future. With a belief that consumers can have it all
, we are an uncompromising energy company that makes coming clean a no brainer. Our award‑winning technology platform empowers homeowners, businesses, and entrepreneurs to adopt renewable energy through simple, scalable, and innovative solutions. Operating at the intersection of B2B and D2C, we offer software, financial products, and services that drive real environmental impact—without compromising value. We deliver end‑to‑end solutions for whole home electrification that put clean energy within reach for all.

Our employees are our most valuable resource. We foster a promote‑from‑within culture that prioritizes talent development, career growth, and purpose‑driven work. Palmetto offers a comprehensive benefits package—including unlimited PTO, medical, dental, and vision coverage, paid parental leave, retirement plans, and more—so you can have it all both personally and professionally. Palmetto prioritizes people, planet, and profit—backed by a culture that values collaboration, impact, and balance.

Join us in building a brighter, cleaner world.

This position will be based remotely in the United States.

As a Software Development Engineer III at Palmetto, you will play a key role in designing, building, and scaling critical data ingestion pipelines and 3rd party integrations that connect hundreds of thousands of solar energy and HVAC systems to our platform. Working primarily with NestJS, Type Script, Mongo

DB, and Google Cloud Spanner, you'll architect and maintain robust integrations with third‑party manufacturer APIs that power downstream systems across the entire company. You'll work hands‑on building resilient microservices, designing event‑driven architectures, and solving complex problems around data consistency and data ingestion at enterprise scale. Your work will directly impact product teams, analytics, customer support, operations, and business intelligence systems that depend on reliable, mission‑critical data.
This role is ideal for a passionate, growth‑minded engineer who thrives in an Agile environment, brings ideas to the table, and has the technical depth to contribute to platform evolution and system scalability. You'll work alongside, not for, other team members – contributing your ideas, code, and energy to shape solutions that drive business outcomes and enable teams across Palmetto to deliver exceptional customer experiences.

• Design and implement scalable server‑side solutions, with an emphasis on APIs, backend services, event‑driven architecture, and database integration.
• Write high‑quality, testable, and maintainable code across the full stack.
• Develop and maintain comprehensive unit, integration, and end‑to‑end tests.
• Diagnose and troubleshoot production issues and propose robust solutions.
• Participate in Agile ceremonies (planning, grooming, retrospectives) and contribute to meaningful story estimations.
• Engage in architectural discussions, technical design reviews, and contribute to Palmetto's engineering standards.
• Identify and advocate for opportunities to improve system performance, reliability, and developer productivity.
• Partner cross‑functionally with product managers, designers, and QA to deliver well‑rounded user‑centric solutions.

• Actively participate in peer code reviews with a focus on knowledge sharing, mentorship, and maintaining high‑quality code standards.
• Collaborate openly with others to help cultivate a culture of learning, innovation, and continuous improvement.
• Demonstrate an ownership mindset by anticipating future needs and contributing to long‑term technical roadmap discussions.

• 5+ years of professional software engineering experience.
• Strong proficiency in JavaScript (ES6+) and understanding of the JavaScript object model.
• Proficiency with NestJS and experience designing/consuming RESTful APIs.
• Experience building and maintaining backend applications in an event‑driven architecture.
• Experience with message queues and message brokers.
• Ha…