Backend Engineer

About the company

Nuclearn builds an AI platform that automates critical operational workflows for nuclear power plants.

About this role

<p></p> <p class="x_PDq2pG_selectionAnchorContainer"><strong data-olk-copy-source="MessageBody">The Nuclear Company</strong>&nbsp;is the fastest growing AI tech-startup in the nuclear and energy space, pioneering a fleet-scale approach to building the next generation of nuclear reactors. Through our design-once, build-many model, we're accelerating the deployment of safe, reliable, and affordable nuclear energy.</p> <p><strong>We operate with an AI-first mindset.</strong>&nbsp;Every employee is expected to leverage AI, technology, and the Nuclear Operating System (NOS) as integral components of their role to improve the quality, speed, and impact of their work. We expect every team member to continuously identify opportunities to automate workflows, enhance decision-making, improve processes, and contribute to the ongoing evolution of NOS as a strategic operating capability that enables The Nuclear Company to scale with excellence.</p> <p><strong>We hire people who are driven by purpose, thrive in ambiguity, and are energized by building what has never been built before.</strong>&nbsp;Our team combines intellectual curiosity with high agency, embraces candid feedback and continuous learning, and holds themselves and others to exceptional standards. Our values—<strong>Trust, Responsibility, Unity, Scrappiness, and Tenacity</strong>—guide how we hire, collaborate, and make decisions every day. They are not words on a wall; they are the standard by which we operate. Trust is the foundation of our safety culture, fostering intellectual honesty, accountability, and open communication, while our values challenge every team member to execute with urgency, humility, resilience, and an unwavering commitment to our mission.</p> <p><strong><span class="TextRun SCXW174644119 BCX0" lang="EN-US" data-contrast="auto"><span class="NormalTextRun SCXW174644119 BCX0">About the role</span></span></strong></p> <p><span data-contrast="auto">The Nuclear Company is hiring a Backend Engineer to build the server-side systems behind NOS modules and applications. You will report to the Director of Product Engineering and work in the Product Engineering squad. NOS is the software platform behind one of the largest nuclear buildouts in the United States, and this role builds the APIs, services, and data access the products run on.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559739":120,"335559740":240}">&nbsp;</span></p> <p><span data-contrast="auto">This is a hands-on engineering role. You will design and build backend services and APIs for NOS applications,&nbsp;model&nbsp;and access data, and make sure the server side is reliable, secure, and fast. You work with the Staff Software Engineer and product engineers on the applications and with the platform squad on shared services.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559739":120,"335559740":240}">&nbsp;</span></p> <p><span data-contrast="auto">You will write production code, review pull requests, debug production issues, and build backends that hold up in a regulated, safety-critical setting.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559739":120,"335559740":240}">&nbsp;</span></p> <p><strong><span class="EOP SCXW174644119 BCX0" data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">Responsibilities</span></strong></p> <ul> <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335551500":0,"335552541":1,"335559685":360,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"multilevel"}" data-aria-posinset="1" data-aria-level="1"><span data-contrast="none">Build backend services and APIs. Design, build, and&nbsp;maintain&nbsp;the server-side systems behind NOS modules and applications.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">&nbsp;</span></li> </ul> <ul> <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335551500":0,"335552541":1,"335559685":360,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"multilevel"}" data-aria-posinset="2" data-aria-level="1"><span data-contrast="none">Model and access data. Design schemas, queries, and data access patterns that are correct and performant.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">&nbsp;</span></li> </ul> <ul> <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335551500":0,"335552541":1,"335559685":360,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"multilevel"}" data-aria-posinset="3" data-aria-level="1"><span data-contrast="none">Keep the backend reliable and secure.&nbsp;Build for&nbsp;uptime, handle errors well, and follow security and&nbsp;access-control&nbsp;requirements.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">&nbsp;</span></li> </ul> <ul> <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335551500":0,"335552541":1,"335559685":360,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"multilevel"}" data-aria-posinset="4" data-aria-level="1"><span data-contrast="none">Integrate with the platform. Use shared platform services, data, and integrations rather than rebuilding them.</span><span data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">&nbsp;</span></li> </ul> <ul> <li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{"335551500":0,"335552541":1,"335559685":360,"335559991":360,"469769226":"Symbol","469769242":[8226],"469777803":"left","469777804":"","469777815":"multilevel"}" data-aria-posinset="5" data-aria-level="1"><span data-contrast="none">Support the full lifecycle. Write tests, wire services into CI/CD, and support what you ship in production.</span