Senior Full Stack Engineer / ClimateTech / React + Ruby on Rails / NYC or Remote

Job title: Senior Full Stack Engineer / ClimateTech / React + Ruby on Rails / NYC or Remote in New York City, NY at Motion Recruitment

Company: Motion Recruitment

Job description: Senior Full-Stack EngineerJoin a mission-driven startup at the intersection of climate and fintech, dedicated to making sustainable building upgrades—like heat pumps, batteries, and EV chargers—more affordable and accessible. We are looking for a Senior Full-Stack Engineer to build products and features that empower contractor and manufacturer partners to accelerate the adoption of energy-efficient solutions.This role is ideal for engineers who thrive in fast-paced environments, enjoy working across the entire stack, and want to make a direct impact in a high-growth startup. This is a hybrid position based in NYC with flexibility on leveling from Senior to Principal Engineer. What You’ll DoOwn end-to-end feature development, from ideation and planning through execution and deploymentWrite and review code across the full stack while balancing quality and execution speedMake key architectural decisions, define best practices, and manage technical debtWork closely with the founding team to shape the product roadmap, understand customer pain points, and influence prioritiesGain exposure to all aspects of a startup, including sales, customer discovery, and strategy Required Skills & Experience5+ years of experience in full-stack development, preferably with Ruby on Rails or similar frameworksStrong understanding of modern web application development practicesExpertise in database design and managementExcellent communication skills and ability to work cross-functionally to balance product and technical requirementsOwnership mindset with the ability to operate in an ambiguous, fast-moving environmentExperience designing and scaling systems from 0 to 1 and beyondInterest or experience in AI, ML, and LLMs is a plus What You Will Be Doing Tech Breakdown50% Back-end development (Ruby on Rails, database management)50% Front-end development & full-stack architecture Daily Responsibilities70% Hands-on development, coding, and reviewing20% Collaborating with product, design, and business teams10% Researching and implementing new technologies and best practices The Offer$140,000 - $180,000 salary (New York) + competitive equity packageHealth, dental, and vision insuranceUnlimited PTOA unique opportunity to join a mission-driven, fast-growing startup at the ground level

Expected salary: $140000 - 180000 per year

Location: New York City, NY

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