Senior Backend Engineer

About UsChargerHelp! Inc. is a California-based tech company on a mission to power up the EV ecosystem. We're not just solving a challenge; we're driving the charge towards a sustainable future. Our EMPWR platform provides Reliability as a Service (RaaS), delivering data-driven insights that keep electric vehicle charging stations operating smoothly.We're a dynamic, mission-driven startup that believes in innovation, integrity, and an unwavering commitment to quality. If you join us, you'll be part of a team that's leading EV reliability and helping shape the future of transportation and environmental sustainability.Role OverviewWe're looking for a Senior Backend Engineer to join our small, highly collaborative team. You'll work closely with our engineering lead to develop and enhance our Rails codebase while having significant influence on our technical direction as we grow. This role combines hands-on development with the chance to build cutting-edge AI-enhanced software that transforms how EV charging infrastructure is maintained and managed.On our nimble team, you'll have significant autonomy and impact. We value engineers who thrive in startup environments, take ownership, and are excited about implementing ambitious solutions that provide real-world value to our customers.Our Team StructureYou'll be joining a lean, balanced engineering team consisting of:Engineering Lead (Rails expert who actively contributes to the codebase daily)Senior Data Engineer (Snowflake, dbt)Senior Frontend Engineer (React, React Native, TypeScript)You as Senior Backend EngineerThis structure ensures you'll have technical leadership, collaborative support, and clear ownership areas while working as part of a cross-functional team.Technical EnvironmentOur stack includes:Ruby on Rails 6PostgreSQLRedisSidekiqRESTful and GraphQL APIs serving React & React Native web & mobile appsTurbo-driven UI components (gradually transitioning to TypeScript & React)LLM integration (emerging area we're building out)We're focused on building robust APIs while transitioning from some legacy Turbo-driven UIs to more modern React components.Key Outcomes and ResponsibilitiesBe the Backend Expert on Our TeamObjective: Take full ownership of our Rails applications as the dedicated backend specialistPartner with our engineering lead on the development and maintenance of our Rails codebase, taking ownership of key components and featuresImplement best practices for API design, security, and performance optimizationDevelop and maintain well-structured, testable, and efficient codeDesign database schemas and data models that directly support our mobile applicationsWork hands-on across all aspects of our backend systemsBuild Platform Capabilities and APIsObjective: Transform our product into a scalable platform through API excellence and AI integrationDesign and implement RESTful and GraphQL APIs that connect seamlessly to our frontend experienceArchitect and implement scalable solutions that deliver AI-powered services that complement existing business logic and data-driven workflowsBuild connective tissue that efficiently ties together our frontend, backend, data systems, and AI servicesDrive Technical Integration in a Small TeamObjective: Work collaboratively across our engineering stackCollaborate directly with our engineering lead, senior data engineer, and senior frontend engineer as part of our tight-knit, cross-functional teamContribute to architectural decisions alongside the engineering teamBe an active voice in all technical conversations with the product and engineering teamEmbrace the breadth of responsibilities that come with a small team environmentDeliver Impact with SpeedObjective: Balance quality and velocity as a key contributor to our small teamTake ownership of backend delivery timelines and communicate proactivelyHelp identify and execute on the highest-value technical investmentsParticipate in our lightweight agile process as a core team memberIdentify and resolve technical debt with practical, implementation-focused solutionsShip production-ready code that balances immediate needs with long-term maintainabilitySkills and QualificationsMust-Have:Expert-level Ruby on Rails development (4+ years)Strong API design experience and PostgreSQL expertiseSelf-directed with ability to own systems with minimal oversightExcitement about building LLM-enhanced productsExcellent communication skills for our async/remote environmentNice-to-Have:Experience with AI/LLM integrationTypeScript/JavaScript ecosystem familiarityBackground collaborating with React Native developersExperience on small engineering teams (2-5 engineers)Interest in electric vehicles and climate techExperience4+ years of professional Ruby on Rails developmentTrack record of direct collaboration with frontend and product teamsRemote Work DetailsFlexible work hours with core collaboration hours in US time zonesRegular video stand-ups and planning sessions via ZoomAsynchronous communication via Slack and project management toolsNo regular on-site requirementsGrowth OpportunitiesSignificant influence on technical architecture decisionsChance to shape emerging AI integration strategyLeadership opportunities as the team scalesDirect visibility to company leadership and impactOur Hiring JourneyWe've designed our interview process to be focused, transparent, and respectful of your time:Recruiter Screening (30 min): Initial conversation about your background and our teamTechnical Assessment (2 hours): Practical Rails exercise and architectural discussionTeam Interview (1 hour): Meet engineering and product teammatesExecutive Interview (1 hour): Explore how you'll impact our mission and growthReady to make an impact? Apply with your resume, and we'll be in touch if there's a good match!

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