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Posted May 19, 2026
We’re looking for a Fullstack Engineer to help develop and scale the Lightning AI platform across the frontend, CLI, APIs, and core backend systems. In this role, you’ll take ownership of key features and drive them end-to-end, working closely with engineering, product, and design to ship high-quality, iterative improvements. This is an opportunity to build systems that support real-world machine learning workloads at scale. This role is based in one of our hubs (NYC, SF, Seattle, or London), with a minimum of 2 in-office days per week and occasional team and company offsites. We are not able to provide visa sponsorship for this position at this time. ## What You’ll Do
Write readable/testable/efficient code in React and either Python or Go (Golang). - Build deep expertise in our technology stack to deliver new features, improve system stability, and increase overall performance. - Partner with engineering and product leaders on developing the Lightning product while using your experience to set the technical direction for large projects. - Evaluate, strengthen, and document technical architecture, tools, and processes. - Maintain high standards for software quality, implement automation, drive continuous delivery, and reduce time to production while proactively reducing technical debt. - Mentor and coach engineers on system design, operating in high uncertainty, and problem-solving to create a supportive, inclusive environment where each engineer can grow. ##
Proficiency in React and either Go (Golang) or Python, with a preference for Go
Strong understanding of software engineering principles and lifecycle
Hands-on experience as a Fullstack Engineer in a SaaS technology company
Proven ability to take ownership of key features and drive end-to-end development
Communication and collaboration with engineers, product managers, and designers
Ability to operate in high uncertainty and rapidly changing environments
We are committed to offering competitive compensation that reflects the value each team member brings to our mission. Final offers are based on factors such as experience, skills, geographic location, and role expectations. In addition to base salary, our total rewards package for eligible roles includes a discretionary bonus, a meaningful equity component, and comprehensive benefits. The anticipated annual base salary range for this role is:
$120,000—$250,000 USD
We offer a comprehensive and competitive benefits package designed to support our employees’ health, well-being, and long-term success. Benefits may vary by location, team, and role. Benefits include:
At Lightning AI, we are committed to fostering an inclusive and diverse workplace. We believe that diverse teams drive innovation and create better products. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic. We are dedicated to building a culture where everyone can thrive and contribute to their fullest potential.
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