Senior Software Engineer​/Tech Lead; Full-Stack

About Good Leap:
Good Leap 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 Good Leap’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.

Good Leap is also proud to support our award‑winning nonprofit, Give Power, 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.

We are seeking a highly skilled Senior Full‑Stack Software Engineer to bring technical excellence, initiative, and leadership to our team. As a Senior Engineer, you’ll be a key contributor to the design, development, and scaling of our platform, working closely with product managers, designers, and fellow engineers to build solutions that are secure, reliable, and performance‑optimized. You’ll work across the stack, lead initiatives from concept to delivery, and take the lead on major initiatives—planning features, defining MVPs, breaking projects into actionable phases, and removing blockers for the team.

This is an exciting opportunity for someone who thrives in a fast‑paced environment and is motivated to take ownership of high‑impact work within a growing company.

• Lead the design and development of scalable, secure applications across the stack—spanning modern React UIs to high‑performance backend services.
• Design and build architecture that supports AI/ML‑powered features across user‑facing and API surfaces.
• Drive initiatives end‑to‑end—from ideation and planning to execution—by breaking down complex projects into MVPs and manageable, prioritized releases.
• Collaborate with product and engineering leaders to align solutions with business objectives.
• Ensure compliance with security best practices and data privacy regulations.
• Mentor mid‑level and junior engineers, fostering a culture of growth, learning, and technical excellence.
• Evaluate and implement new technologies and tools to continuously improve our applications and development processes.
• Communicate clearly, engage with stakeholders, product managers and cross‑functional teams to align on goals, share progress and manage expectations.

• 5+ years of full‑stack software development experience using Node.js, React, Type Script, and REST APIs, with experience in state management (Redux, XState, Nanostores, etc.), preferably with at least 1 + year working with AI/ML solutions or LLM.
• Familiar with implementing and maintaining CI/CD pipelines to streamline development, testing, and deployment processes.
• Familiarity with MLOps, CI/CD for AI pipelines, and AI observability tools.
• Deep understanding of architecture and best practices, including RESTful APIs, databases, secure coding, and responsive design.
• Experienced with AWS architecture, including Lambda, ECS, S3, Dynamo
  
  DB and Step Functions.
• Familiarity with designing and developing application layers that interface with large language models (LLMs) or machine learning (ML) systems.
• Experience building and integrating LLM features (e.g., via OpenAI, Claude, Vertex AI, or similar), including prompt design, vector storage, and retrieval strategies.
• Build tools and services to help other team members experiment and ship AI‑enhanced features responsibly and efficiently.
• Excellent communication skills with the ability to influence technical direction and collaborate effectively across product and engineering teams.

• Experience in Fin Tech or Mortgage.

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