The world’s most critical infrastructure—banking, airlines, utilities—is held together by millions of lines of COBOL and mainframe logic written decades ago. The engineers who built it are retiring and the documentation is fading. These systems are \"too big to fail\" and \"too complex to change,\" leaving global infrastructure frozen in the 1970s.
At Hypercubic, we’re building AI systems that can understand, reason about, and rearchitect large-scale legacy applications. We work at the intersection of program analysis, knowledge extraction, and agentic systems, applied to some of the most critical enterprise software in the world.
Learn why we're excited about mainframe modernization.
We’re looking for a true generalized specialist with unusually strong technical and product taste. You will work directly with the CTO to design, prototype, and productionize AI-powered systems from first principles. This is a founding role with meaningful ownership over architecture, product direction, and engineering culture. It is suited for someone with strong fundamentals and comfortable operating across abstraction layers, from low-level system reasoning to high-level product UX.
Rapidly prototype new concepts and features to validate ideas before full implementation.
Ship AI-driven features end to end, from model interaction to user-facing workflows.
Set early engineering standards around testing, reliability, and code quality.
Translate ambiguous problem statements into concrete experiments, constraints, and working systems.
Lead architecture decisions and long-term technical direction with the CTO.
Collaborate with a highly diverse group of subject matter experts and customers from various industries (banks, insurance, airlines, and more)
You care deeply about your work and the product.
You are comfortable with uncertainty and enjoy figuring out what to build before how to build it.
You think in systems and feedback loops, not just features.
You can move fast and slow. Prototyping ideas in hours, then building enterprise-grade features to a high-quality bar.
You want to become world-class at AI engineering.
You have a bias for action and a track record of working in fast-paced environments with urgency.
Strong testing intuition, including TDD and property-based testing.
Experience building and maintaining production-grade agentic or autonomous systems.
Exposure to legacy systems (especially mainframes or COBOL), compilers, program analysis techniques, or high-performance computing (HPC).
Familiarity with enterprise software constraints.
Location: This role is in-person based in San Francisco, California.
Benefits: Hypercubic offers generous health, dental, and vision benefits, PTO, and relocation support as needed.
Sponsorship: Unfortunately, we are unable to sponsor new H1B employment visas at this time. However, we can support H1B transfers and OPT.
Build the pipeline and drive qualified opportunities that accelerate Hypercubic’s growth and revenue.
We’ve built an initial enterprise pipeline through founder-led sales. Now we’re looking for an exceptional founding salesperson to dramatically expand that pipeline, keep opportunities moving, and help turn early traction into a repeatable sales motion.
Your three core responsibilities:
Own the entire top of funnel: sourcing, prospecting, outreach, and qualification.
Drive opportunities from first call, owning demos, follow-up, and deal progression.
Work with the CEO on strategy, pricing, negotiation, and closing.
You’ll have meaningful ownership over who we pursue, how we reach them, and how we advance opportunities. You’ll build the playbook through daily execution and customer feedback, with room to take on more of the sales cycle as you grow.
Create qualified pipeline. Research accounts and generate opportunities through outbound, warm introductions, partners, conferences, and inbound leads.
Run discovery. Lead first calls, understand the problem and urgency, identify stakeholders, and establish whether there’s a credible path to a purchase.
Keep deals moving. Build champions, engage decision-makers, identify blockers, and secure concrete next steps.
Partner with the CEO. Bring them into deeper demos, strategy, pricing, and negotiation with strong preparation. Own follow-through afterward.
Build the playbook. Test messaging and channels, document what works, maintain an accurate pipeline, and use AI and automation to increase your output.
Success means more qualified opportunities, faster deal progression, and more pilots converting into revenue.
Proven sales ability. You’ve built your own pipeline and won complex enterprise business, ideally including six- or seven-figure contracts. You can point to deals you personally created and advanced.
High agency. You find ways into accounts and move independently without an established playbook.
Enterprise judgment. You build champions, navigate buying committees, and know when to push, adapt, or walk away.
Technical curiosity. You learn complex products quickly and earn credibility with engineers and executives.
Sharp communication. You write compelling outreach, run focused discovery, and get to the point.
Disciplined execution. You prepare thoroughly, keep an accurate pipeline, and follow through.
Resourceful with tools. You’re hands-on with CRMs, prospecting tools, and AI. You build workflows that accelerate research, outreach, meeting preparation, and follow-up.
Ambition and coachability. You take ownership of results, seek feedback, and want to become exceptional at your craft.
You may be an AE who built your own pipeline, a standout BDR ready for broader ownership, or a founder who sold a technical product.
You’re excited to be Sales #1: own the playbook, learn directly from the founders, and shape the sales function as Hypercubic grows.
A sustained increase in qualified enterprise opportunities.
More accounts progressing toward pilots and paid deployments.
Active deals with engaged stakeholders, understood blockers, and concrete next steps.
Repeatable sources of pipeline beyond the CEO’s personal network.
Driving the founders to spend more time in consequential bottom of the funnel customer conversations.
A repeatable sales playbook grounded in what actually wins business.
You’ll help build the commercial foundation of a company tackling some of the world’s most consequential software. You’ll work closely with the founders and engineering team, influence how we reach the market, and see your work directly shape the business.
Location: This role is in-person 5 days a week based in San Francisco, California near FiDi.
Sponsorship: Unfortunately, we are unable to sponsor new H1B employment visas at this time.
We offer the following benefits for our full-time employees:
Founding-team level equity,
Medical, Dental, and Vision benefits for you and your family
Life Insurance benefits
Retirement Plan (e.g., 401K)
Monthly stipend to support your wellness and commute
Daily lunches/dinners and snacks in the office to fuel you
Generous PTO and sick day policy to rest and recharge
At Hypercubic, we’re building AI systems that can understand, reason about, and rearchitect large-scale legacy applications running on mainframes and COBOL. We work at the intersection of program analysis, knowledge extraction, and agentic systems, applied to some of the most critical enterprise software in the world.
We’re a small, deeply technical team in San Francisco, backed by top investors, and working with some of the largest organizations in the world.
","descriptionPlain":"Build the pipeline and drive qualified opportunities that accelerate Hypercubic’s growth and revenue.\n\n\n\n\nABOUT THE ROLE\n\nWe’ve built an initial enterprise pipeline through founder-led sales. Now we’re looking for an exceptional founding salesperson to dramatically expand that pipeline, keep opportunities moving, and help turn early traction into a repeatable sales motion.\n\nYour three core responsibilities:\n\n 1. Own the entire top of funnel: sourcing, prospecting, outreach, and qualification.\n\n 2. Drive opportunities from first call, owning demos, follow-up, and deal progression.\n\n 3. Work with the CEO on strategy, pricing, negotiation, and closing.\n\nYou’ll have meaningful ownership over who we pursue, how we reach them, and how we advance opportunities. You’ll build the playbook through daily execution and customer feedback, with room to take on more of the sales cycle as you grow.\n\n\n\n\nWHAT YOU’LL OWN\n\n - Create qualified pipeline. Research accounts and generate opportunities through outbound, warm introductions, partners, conferences, and inbound leads.\n\n - Run discovery. Lead first calls, understand the problem and urgency, identify stakeholders, and establish whether there’s a credible path to a purchase.\n\n - Keep deals moving. Build champions, engage decision-makers, identify blockers, and secure concrete next steps.\n\n - Partner with the CEO. Bring them into deeper demos, strategy, pricing, and negotiation with strong preparation. Own follow-through afterward.\n\n - Build the playbook. Test messaging and channels, document what works, maintain an accurate pipeline, and use AI and automation to increase your output.\n\nSuccess means more qualified opportunities, faster deal progression, and more pilots converting into revenue.\n\n\n\n\nWHAT WE’RE LOOKING FOR\n\n - Proven sales ability. You’ve built your own pipeline and won complex enterprise business, ideally including six- or seven-figure contracts. You can point to deals you personally created and advanced.\n\n - High agency. You find ways into accounts and move independently without an established playbook.\n\n - Enterprise judgment. You build champions, navigate buying committees, and know when to push, adapt, or walk away.\n\n - Technical curiosity. You learn complex products quickly and earn credibility with engineers and executives.\n\n - Sharp communication. You write compelling outreach, run focused discovery, and get to the point.\n\n - Disciplined execution. You prepare thoroughly, keep an accurate pipeline, and follow through.\n\n - Resourceful with tools. You’re hands-on with CRMs, prospecting tools, and AI. You build workflows that accelerate research, outreach, meeting preparation, and follow-up.\n\n - Ambition and coachability. You take ownership of results, seek feedback, and want to become exceptional at your craft.\n\nYou may be an AE who built your own pipeline, a standout BDR ready for broader ownership, or a founder who sold a technical product.\n\nYou’re excited to be Sales #1: own the playbook, learn directly from the founders, and shape the sales function as Hypercubic grows.\n\n\n\n\nWHAT SUCCESS LOOKS LIKE\n\n - A sustained increase in qualified enterprise opportunities.\n\n - More accounts progressing toward pilots and paid deployments.\n\n - Active deals with engaged stakeholders, understood blockers, and concrete next steps.\n\n - Repeatable sources of pipeline beyond the CEO’s personal network.\n\n - Driving the founders to spend more time in consequential bottom of the funnel customer conversations.\n\n - A repeatable sales playbook grounded in what actually wins business.\n\nYou’ll help build the commercial foundation of a company tackling some of the world’s most consequential software. You’ll work closely with the founders and engineering team, influence how we reach the market, and see your work directly shape the business.\n\n\n\n\nLOGISTICS\n\n - Location: This role is in-person 5 days a week based in San Francisco, California near FiDi.\n\n - Sponsorship: Unfortunately, we are unable to sponsor new H1B employment visas at this time.\n\n\n\n\nBENEFITS\n\nWe offer the following benefits for our full-time employees:\n\n - Founding-team level equity, \n\n - Medical, Dental, and Vision benefits for you and your family\n\n - Life Insurance benefits\n\n - Retirement Plan (e.g., 401K)\n\n - Monthly stipend to support your wellness and commute\n\n - Daily lunches/dinners and snacks in the office to fuel you\n\n - Generous PTO and sick day policy to rest and recharge\n\n\n\n\nABOUT HYPERCUBIC\n\nAt Hypercubic, we’re building AI systems that can understand, reason about, and rearchitect large-scale legacy applications running on mainframes and COBOL. We work at the intersection of program analysis, knowledge extraction, and agentic systems, applied to some of the most critical enterprise software in the world.\n\nWe’re a small, deeply technical team in San Francisco, backed by top investors, and working with some of the largest organizations in the world."}],"apiVersion":"1"}