Founding Product Engineer
Cranston Accounting Group
About the role
Cranston is building the AI back office for accounting firms, combining the judgment of experienced operators with the leverage of AI agents and reliable software.
We automate the most complex manual workflows inside CPA firms: tax preparation, bookkeeping, document collection, cleanup, review, close, and client operations.
Cranston is already deployed with accounting firms across the country, helping them serve more clients, reduce bottlenecks, and give their best people time back for higher-value work.
You will work across product, design, engineering, and implementation. Some days that means mapping how tax packages move through a firm. Other days it means building a review workflow, designing an agent loop, tightening data models, or debugging why a customer workflow failed in production.
This is a product engineering role for someone who wants to build the system, not just spec it. You will turn what we learn from firms into durable product: interfaces, automations, review loops, workflow primitives, data models, and agent behavior that work across customers.
Cranston is vertically integrated across software, AI agents, and managed back‑office operations. That makes the problems unusually concrete: if the product is wrong, the work breaks. If the product is right, firms can take on more clients without adding headcount.
Why Cranston
Cranston was founded by Sean O'Bannon and Max Minsker to rebuild the accounting firm back office from the ground up.
Sean previously built ERP and ML systems at ReMatter and Databricks, seeing how much labor still sits on top of even the best systems of record. Max ran an accounting firm that filed 10,000+ tax returns and saw the same problem from inside the work itself: firms losing their best hours to document chasing, data entry, reconciliations, cleanup, and handoffs.
Our view is that the next generation of accounting firms will not run on bigger offshore teams or more disconnected point solutions. They will run on AI agents that can understand firm context, do the repetitive prep work, and leave the judgment calls to experienced accounting professionals.
We are rebuilding the back office for one of the most important professional services industries in the country.
Accounting firms are under structural pressure: talent shortages, rising client expectations, and more work than their teams can absorb.
AI agents can finally change the operating model of the firm, not just make another dashboard or point solution.
5M raised from top tier investors.
Dozens of customers, with revenue growing quickly.
A small team where one strong engineer can own major product surfaces end to end.
What you will do
Own core product workflows for tax prep, tax review, bookkeeping, client requests, and practice‑management operations.
Design and build product abstractions that turn messy accounting work into repeatable, reviewable systems.
Use Cranston's internal agent platform to move from product context to working software quickly, then inspect the result until it is right.
Build interfaces, workflow states, data models, and agent behavior that hold up in live customer usage.
Codify repeatable patterns from customer deployments back into the main product.
Use the product yourself, inspect logs and data when needed, notice what is wrong, and push until the details are right.
Your first 30 days
Learn how CPA firms move work from source documents to reviewed tax packages, books, and client follow‑ups.
Shadow existing Cranston workflows and identify places where better product behavior would remove real manual work.
Pick workflows and turn them into a concrete product plan: inputs, user‑facing states, edge cases, success criteria, and verification steps.
Drive an AI‑agent implementation loop from product plan to working feature.
Test the workflow yourself against real or realistic data, fix the rough edges, and help ship it into a live customer or internal operator workflow.
Who we are looking for
You have strong programming skills and have shipped production applications, serious internal tools, or customer‑facing automation.
You have high agency and can navigate ambiguity in messy customer environments where the problem is not handed to you cleanly.
You have an ownership mentality and are willing to do whatever it takes to make something work.
You have good communication skills to explain technical tradeoffs and earn trust with non‑technical stakeholders.
You are comfortable using AI coding agents as your main implementation tool and holding their output to a high bar.
Skills
AI Agents · React · Swift · TypeScript · Docker · PostgreSQL
Bonus points
Experience in accounting, finance, tax, audit, professional services, or another workflow‑heavy enterprise vertical.
Previous founder experience or meaningful ownership at an early‑stage startup.
- ...applications is our core focus at Witness. The products and tools you build will be instrumental... ...applications on top of it. As an engineer at Witness, you'll play a critical role... ....tech About The Role For the Founding Product Engineer role, we're looking for...SuggestedRemote workFlexible hours
$150k - $200k
...infrastructure, data pipelines, ML, APIs, product – you move across all of it depending on... ...true generalist. Backend, frontend, AI engineering, data systems, product thinking, growth... ...agentic frameworks The Pace This is a founding role at a fast growing company. We work...SuggestedLocal areaNight shiftWeekend work- ...one-time exercise. It should evolve as products, markets, or sales motions change. Our AI... ...built on deep pricing experience from our founding team who have run over 150 pricing... ...assembled our team of 8 (pricing experts and engineers) to deliver that capability. Our main...SuggestedContract work
- ...I'm looking for a Founding Product Engineer to join me at GloweUp. GloweUp is an early-stage femtech company building at the intersection of women's hormonal health, skincare, data, and AI. We're developing a consumer platform designed to help women better understand...Suggested
- ...platform for understanding and improving how engineering teams work. We believe the way... ...far more accurate and actionable view of productivity, impact and collaboration. Trusted by... ...and the Agent Fund. We’re now hiring a Founding Product Engineer to help define the...SuggestedWork at officeImmediate start
$190k - $210k
...Founding Product Engineer Title of Role: Founding Product Engineer Location: San Francisco, CA, Hybrid Company Stage of Funding: Venture Round - Fintech, Financial Services, Consumer Office Type: Hybrid Salary: $190K-$210K Company Description...Work at office$200k - $250k
...from packaging and willingness-to-pay analysis to deal quoting, discount governance, and CPQ workflows. We're looking for a Founding Product Engineer to own entire product modules end-to-end, work directly with customers, and help set the technical and engineering...Remote workVisa sponsorship- ...We founded Bild AI to tackle the mess that is blueprint reading, cost estimation, and permit applications in construction. It's a really... ...to-end - interview customers every week and watch them use the product, and ship the feature they need by the next week Actually...Full timeWork at officeRelocation
- ...candidate profiles across active roles and use resumes/profiles to understand which backgrounds may be a fit. THE ROLE As a Founding Product Engineer, you may work on projects that require strong execution, communication, analytical judgment, and the ability to move...
- ...Founding Product Engineer This high-growth technology company is building essential financial infrastructure to support and grow America's industrial GDP. We are hiring a founding product engineer to lead core 0-to-1 builds. The successful candidate will own the full...Remote work
- ...About The Role As a founding engineer, you'll bring our MVP product to maturity and help define the technical architecture of a new category of software. You will work on frontier engineering and design questions about how to best marry code and intelligence. You...
- ...Founding Product Engineer — Smart Bricks (USA Launch) Location: San Francisco, CA Type: Full-time Team: Founding Team (USA) Smart Bricks is building the world’s AI-native real estate investment infrastructure. Think of us as Bloomberg + Robinhood for global real estate...Full time
- ...About the job Founding Product Engineer About the role Success Matcher Recruitment is partnering with our client, the leading shared housing platform that has cracked the code on co-living and is poised for nationwide scale, to hire an entrepreneurial Founding...
$150k - $350k
...About the job Founding Product Engineer Founding Product Engineer Company: Amboras Location: San Francisco, CA (on-site) Compensation: $150,000 - $350,000 + 0.2% - 0.6% equity Employment Type: Full-time Visa Sponsorship: Not available (US citizens...Full time$140k - $180k
...contracts through legal at record speed, with transparency, predictable pricing, and exceptional quality. We're hiring a Founding Product Engineer to build the platform that's reinventing how legal work gets done. You'll sit next to attorneys and AI engineers,...Work at office$200k - $250k
...About the Role This is a founding product engineering role at an early-stage B2B SaaS startup building an AI-driven pricing and monetization platform. You will own entire product modules end-to-end, working directly with customers and leadership to shape architecture...Full timeRelocation$140k - $180k
...About the Role This is a founding engineering role at a seed-stage legal AI company that combines AI agents with licensed attorneys to transform... ...are reviewed, negotiated, and drafted. You will build core product features from the ground up, working directly alongside...Full timeContract work- ...Turn the AI runtime into product. Design and ship full vertical experiences — Search, Shop, Finance, Health, Legal — end to end on the... ...white, pixel‑perfect interfaces that ship the same day Wire AI engines into product through the engine‑registry pattern Talk to...
- ...We're Hiring The First Engineer For Our New Product We're hiring the first engineer for our new product. You will own this from start to initial launch. Building the best APIs for realtime people and company data took us from 0 to $4M ARR in first 9 months while...
$200k - $250k
...About the role We are looking for strong engineers to be part of the next stage of Mondrio’s growth and set the bar for our engineering... ...in the agentic era. You own whole modules of our growing product suite end to end: scope with customers, design the API, build the...Contract workWork at officeImmediate startVisa sponsorship- ...and the web tools managers rely on to understand and support their teams. Working directly with the founders, alongside product design and AI engineering, you’ll take features from an initial idea to production. You’ll help decide what to build, sweat the details of how...Work experience placementVisa sponsorshipRelocation package
$150k - $250k
...Design Engineer Location: San Francisco (in-person, in-office, full-time ONLY) Compensation... ...can't see, steer, and trust — so the product has to be an interactive surface where... ...Meaningful equity upside as part of the founding team ~ Medical, dental, and vision...Full timeWork at officeRelocation package- ...obsessively about taste: in design, in product, in every detail. We're solving these... ...of billion dollar companies. Design Engineering Video is the most powerful way humans... ...touch. It's the product. We're hiring a Founding Design Engineer who lives at that intersection...
- ...a century. Dryft is powering the next. THE ROLE As Founding Design Engineer , you’ll work directly with our CEO, CTO, and customers to... ...the value of easy-to-use interfaces. Shipped production features end-to-end . While stronger in FE, you can handle...Relocation
- ...Founding Design Engineer As Weave's Founding Design Engineer, your job is to make complex engineering data feel simple, beautiful and actionable... ...just what they ship) Surface meaningful insights about productivity, quality, collaboration and impact Help teams improve...
- ...ABOUT THE ROLE Design engineer who owns the full visual and interactive experience of Jinba's platform... ...makes complex workflows feel intuitive, and ship production code alongside the engineering team. This is a founding design role for someone who wants to shape how...
$180k - $220k
...About the Role This is a founding-level, high-ownership position sitting at the intersection of design and engineering. You'll be the sole bar-raiser for frontend UX across... ...written UIs feel like one coherent, polished product - covering everything from the design...Remote work- ...trusted by some of our nation's largest farms. They use our products to grow higher-quality crops while reducing chemical use... ...quality and ambition of our company behind it. As Orchard's Founding Design Engineer, you will establish the design function and own design across...Weekend work
$150k - $250k
...Founding Design Engineer Location: San Francisco, CA (On-site, 5 days/week) Compensation: $150,000–$250,000 Base + Equity (0.4–0.8%)... ...experience for a highly technical AI platform, defining the product's design language while building production-ready frontend...H1b- ...and measure the impact on real business outcomes. The role We're hiring a founding design engineer to own the experience of BotBot and the system we run the company on. Our products need interfaces for work that conventional software has never had to expose. A...Remote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Product Engineer. Be the first to apply!
- design assurance engineer San Francisco, CA
- product engineering manager San Francisco, CA
- senior software design engineer San Francisco, CA
- product design engineer San Francisco, CA
- senior manager product engineering San Francisco, CA
- senior product design engineer San Francisco, CA
- senior design verification engineer San Francisco, CA
- sr. product engineer San Francisco, CA
- new product engineer San Francisco, CA
- design engineer San Francisco, CA

