Lead Full Stack Software Development Engineer Jobs

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: Join the High Power Engineering team supporting SpaceXSI to design, build, operate, and maintain electrical infrastructure for AI training campuses. As a Lead Engineer for Data Center electrical, you will work with a small on-site team to scale high-capacity power systems on a schedule set by compute demand. The position is based in Memphis, TN, with potential travel to other sites. RESPONSIBILITIES: Own the electrical architecture from the medium-voltage bus to the GPU rack — topology, redundancy, and standards — for halls scaling with AI compute load. Set and defend the redundancy basis; prove split-feed and cross-feed schemes against bus-fault, transformer-loss, and switchgear-loss contingencies. Establish the campus electrical design standard: equipment tagging, drawing conventions, approved vendor list, insulation coordination, grounding, and arc-flash boundaries. Own the interface with the compute organization on rack density, step-load behavior, power-capping strategy, and actual-versus-nameplate utilization. Own the interface with mechanical and cooling engineering on CDU, sidecar, and pump electrical loads and their contribution to hall demand. Lead desi

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: Join the High Power Engineering team supporting SpaceXSI to design, build, operate, and maintain electrical infrastructure for AI training campuses. As a Lead Engineer for Battery Storage, you will work with a small on-site team to scale high-capacity power systems on a schedule set by compute demand. The position is based in Memphis, TN, with potential travel to other sites. RESPONSIBILITIES: Own the storage fleet as a power plant, not as an accessory: architecture, sizing, controls, safety case, and grid-forming behavior that lets the campus ride through compute step loads and generation contingencies. Own BESS architecture: pack-to-MV-transformer grouping, string composition, medium-voltage collection topology, string-level protection, and physical block layout including spacing per NFPA 855. Own sizing; translate compute duty cycles — step loads, training-job ramps, actual-versus-nameplate utilization — into power and energy requirements. Own inverter control strategy: grid-forming versus grid-following, droop and virtual inertia, fault-current contribution, ride-through, and coordination with generation governors and excitation. Own the plant controller and

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking an experienced Lead, Receiving Specialist to oversee inbound receiving operations supporting data center construction and operations in Memphis, TN. In this working-lead role, you will lead a team of Receiving Specialists in the accurate, timely, and damage-free receipt of high-value materials and equipment (including servers, networking gear, power systems, cooling infrastructure, and other critical components). You will combine hands-on execution with team leadership to maintain inventory integrity, resolve discrepancies, and support aggressive project timelines in a fast-paced, high-growth environment. RESPONSIBILITIES: Lead, mentor, and coordinate a team of Receiving Specialists; assign work, provide training, and ensure consistent, high-quality execution of receiving processes Oversee receipt of all incoming materials and packages; transact receipts in the ERP/WMS system and process hold packages Create, print, and apply routing labels and required identifiers; maintain accurate records of incoming paperwork Verify all material received for conformity with accompanying documentation, checking for damage, correct part numbers, and quantity Inte

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: As a Lead, Inventory Specialist at SpaceXSI, you will oversee warehouse and inventory operations supporting our rapidly expanding data centers. You will lead the receiving, storage, kitting, issuance, and tracking of high-value servers, networking equipment, power and cooling components, spare parts, and infrastructure materials. In this role you will mentor team members, manage daily priorities and backlogs, drive inventory accuracy, and ensure material is available when needed for construction, commissioning, and ongoing operations. You are expected to be hands-on, maintain a high sense of urgency, and continuously improve processes in a fast-paced, high-growth environment. RESPONSIBILITIES: Support daily/weekly team meetings by participating in ways to help the team improve Oversee daily shift backlogs and inventory-related queues. Maintain continual oversight of incoming receipts, RMA backlogs, and outgoing material requests to ensure compliance with metric targets Re-assign daily shift resources to meet demands and prioritize critical data center hardware, spare parts, and infrastructure materials Provide input to employees’ performance Function as focal poi

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: As a Lead Fiber Technician on SpaceXSI's traveling data center build team, you will lead crews in the installation, testing, and commissioning of high-performance fiber optic infrastructure across multiple new and expanding data center sites. You’ll bring strong leadership, technical expertise, and a safety-first mindset to fast-paced hyperscale construction projects. This role involves significant travel to support greenfield and expansion builds, ensuring reliable, high-speed network connectivity that powers SpaceXSI's AI training clusters. You will mentor technicians, drive execution excellence, and help deliver mission-critical infrastructure on aggressive timelines. RESPONSIBILITIES: Serve as crew leader for traveling fiber teams, managing daily work assignments, resource allocation, and execution based on Fiber Span sheets, site surveys, path planning, and cross-functional coordination. Lead and mentor a team of Fiber Technicians across multiple project sites, providing on-the-job training, technical guidance, and performance feedback. Oversee all phases of fiber optic installation projects from planning and mobilization through execution, testing, handover

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: This is a unique opportunity to join a high-output events team focused on events and experiences for SpaceXSI. As an Events Lead, you will be responsible for end-to-end ownership of external facing events, from concept through production and onsite execution. This role is a part of the Events team where you’ll have peers to partner with, learn from, and build together. The Events Lead will work closely with Growth, Sales, Field Growth, Community and Developer Relations to expand SpaceXSI's reach, build relationships with builders, and drive enterprise awareness, sales and product attachment. RESPONSIBILITIES: Plan and execute VIP events, special events, 3 rd party events, and customer experiences from start to finish, including sourcing and managing event vendors such as venue, transportation, catering, A/V and entertainment. Develop and manage event agendas, registration, invite lists, and communicate directly with high-level executive customers. Provide onsite event management, including evening receptions and weekend events. Ideate and implement creative branding elements, such as décor, interactive activations, themes, and custom elements, to enh

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: This is a unique opportunity to join a high-output events team focused on events and experiences for SpaceXSI. As an Events Lead, you will be responsible for end-to-end ownership of external facing events, from concept through production and onsite execution. This role is a part of the Events team where you’ll have peers to partner with, learn from, and build together. The Events Lead will work closely with Growth, Sales, Field Growth, Community and Developer Relations to expand SpaceXSI's reach, build relationships with builders, and drive enterprise awareness, sales and product attachment. RESPONSIBILITIES: Plan and execute VIP events, special events, 3 rd party events, and customer experiences from start to finish, including sourcing and managing event vendors such as venue, transportation, catering, A/V and entertainment. Develop and manage event agendas, registration, invite lists, and communicate directly with high-level executive customers. Provide onsite event management, including evening receptions and weekend events. Ideate and implement creative branding elements, such as décor, interactive activations, themes, and custom elements, to enh

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: You will lead a team of AI Tutors (full-time employees and contractors) responsible for delivering high-quality training data and evaluations that power SpaceXSI's models. You will set the standard for data quality on your projects, review work in the domain, ensure the accuracy and consistency of the data produced, and build operational excellence at the team level. This is a hands-on leadership role — you will both execute labeling/review work and continuously improve processes as we scale. RESPONSIBILITIES: Own end-to-end quality and delivery for assigned Human Data projects — personally reviewing work in the domain, ensuring accuracy, consistency, guideline adherence, and high-quality data production at scale. Lead, coach, and performance-manage a team of AI Tutors, including conducting regular performance reviews, maintaining records, creating action plans, managing shadow sessions, and driving continuous improvement. Oversee and actively participate in labeling and reviewing tasks to maintain high standards and model best practices. Ensure strict guideline adherence, taxonomy management, and quality assurance processes. Drive efficiency by identifying and r

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: The Imagine Product team is redefining AI-driven media experiences for Grok users worldwide. In this role, you’ll build the communications system that meets creators where they are: public proof of what Grok Imagine can do, programs that show creators how it makes them faster, more cost-efficient, or more ambitious, and a community that runs from individual makers to production houses. The job is to move the brand from talking about itself to making other people talk about it — through proof, craft, and community. If you’re a hands-on communicator who can turn product capability into credible stories, repeat advocates, and a feedback loop back into the product, this is your opportunity to make a lasting impact. RESPONSIBILITIES: Own creator and community communications strategy for Grok Imagine — plan and execute outreach that turns product capability into visible proof, creator adoption, and durable brand affinity. Build and ship product-showcase content across owned channels. Design and run influencer programs as two distinct motions: awareness partners who put Grok Imagine in front of volume, and craft partners. Build relationships with production houses, stud

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking an experienced Mechanical Commissioning Lead to lead the buildout, startup, and handover of mechanical systems for SpaceXSI's high-performance data centers. In this senior hands-on leadership role, you will direct commissioning, testing, troubleshooting, and turnover of critical cooling, air handling, and fluid distribution systems that support next-generation AI supercomputing infrastructure. You will lead a team of commissioning technicians while working closely with construction, engineering, operations, EPC contractors, and OEM vendors to deliver safe, reliable, and high-quality mechanical systems. This is a full-time, onsite role with extensive travel to SpaceXSI data center construction sites across the United States. RESPONSIBILITIES: Lead and execute all mechanical commissioning activities for HVAC systems, chillers, cooling towers, CRAC/CRAH units, pumps, heat exchangers, piping systems, hydronic loops, and associated controls in hyperscale data center environments. Direct functional performance testing, airflow/water flow verification, system balancing, integrated system testing, and system turnover to operations. Oversee troubleshooting

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. ABOUT THE ROLE: We are seeking a driven and experienced Agency Development Manager to lead and grow our agency partnerships across the Greater China region. This role is critical in driving revenue growth, enhancing client satisfaction, and ensuring that our agency partners are aligned with our strategic goals. The ideal candidate will have a deep understanding of media agencies, digital marketing, strong commercial acumen, and excellent relationship management skills. RESPONSIBILITIES: As the GCR Agency Development Manager at X, you will play a key role partnering with leading holding companies across the region. You will: Develop strategic relationships at the holding company level through to individual agencies with the goal of delivering value to our partners and X. Serve as the primary point of contact for agencies and act as a trusted advisor. Collaborate cross-functionally with sales, marketing, product, and operations teams to deliver value to agency partners. Support and drive revenue growth at X by creating and executing regional agency development plans. Identify new agency partnership opportunities and support the sales team to onboard new clients to our platform. Mo

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. About the Role You will lead a team of engineers building the infrastructure used to train, test, and evaluate our models. This is one of the few places at SpaceXAI where infrastructure and model behavior meet directly: when something breaks, it's rarely obvious whether it's a systems bug or the model doing exactly what it was trained to do, and your team has to be good at telling the difference before they can fix it. You'll set technical direction for how we train and evaluate models at scale, stay close enough to the code to debug alongside your team, and work daily with researchers to turn tradeoffs in latency, quality, and cost into infrastructure that actually gets built. We're hiring across a range of scope for this role, depending on experience and the size of problem you're ready to own. Example projects include.. Building the rollout infrastructure that lets researchers run RL experiments at scale without fighting the plumbing. Designing eval pipelines that catch regressions before they ship, and give researchers fast, trustworthy signal on whether a change actually helped. Owning the environments in which models are trained and tested: sandboxed, reproducible, and fas

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. About the Role We’re hiring the first Technical Support Engineering leader in APAC to lead a team of Technical Support Engineers and deliver exceptional support experiences to Cursor users. In this role, you’ll guide the team in engaging directly with users, solving complex technical challenges, and leveraging learnings to build internal automations and optimize support processes. You’ll be at the forefront of ensuring users successfully leverage Cursor, shaping how AI-enhanced developer support operates at scale, and building the systems that make support world-class. Ideal candidates are former support engineers with proven leadership experience, thrive in fast-paced startup environments, are passionate about developer tools, and proactively enhance processes and automation while growing the people around them. What you’ll do Lead, mentor, and grow a team of Technical Support Engineers through coaching, feedback, and career development. Serve as the escalation point for complex or urgent customer issues, collaborating with engineering to drive resolution. Set and monitor team goals, metrics, and processes to ensure consistent, high-quality support. Partner with Product and Eng

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. About the Role You will lead the Core Services team at SpaceXAI, owning the critical shared services that sit between our product surfaces and the infrastructure layer: auth, webhooks, and the backend systems that power agent workflows. SpaceXAI is redefining how developers write code, and your team is what makes that possible at scale. You'll build and operate the systems that every product team depends on, ensuring they are reliable, well-abstracted, and ready for whatever comes next. You'll set technical direction for authentication, SCM integrations, webhook infrastructure, and end-to-end agent reliability, driving the quality of the services layer that the entire company builds on top of. You'll lead a small, high-impact team, write and review code, and partner closely with product and infrastructure teams to ensure Cursor's backend is rock-solid. What you’ll do Owning authentication: designing and implementing a scalable auth architecture that secures one of the most widely-used developer tools in the world. Powering the agent backend: owning the infrastructure behind Cursor's agent workflows, optimizing for end-to-end performance and reliability as agents become central t

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars. SpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next. We are hiring a Sales Development Leader, APJ to build and lead SpaceXAI’s Sales Development organization across Asia Pacific. Based in our Singapore office , this is a frontline leadership role responsible for hiring, coaching, and developing a high-performing team of Account Associates that generate pipeline and accelerate customer adoption across the region. This isn’t a traditional SDR organization focused solely on cold outreach. Our Sales Development team partners closely with Growth, Marketing, RevOps, and Sales to identify buying signals, engage customers at the right moment, and create highly personalized outreach informed by product usage, PLG signals, and creative automation. You’ll help your team balance modern, signal-based engagement with disciplined outbound prospecting to consistently create new opportunities across commercial and enterprise accounts. You’ll be responsible for building a strong team culture, driving execution against pipeline goals, coaching early-career talent, and continuously improving how SpaceXAI engages prospective customers across APJ. This role is ideal for a hands-on sales leader who enjoys coaching people, experimenting with new approac