Senior Product Engineer

About this role HubSync builds the platform the largest CPA and advisory firms in the country run on. The domain is unforgiving in the best way: a tax return is either right or it is not, deadlines are statutory, and our customers' busiest weeks are the ones where the software absolutely has to hold. Engineering here is AI-native as a working style, AI code review, AI-driven QA, and Claude-class coding agents are part of how software gets built, and we expect engineers to use that leverage rather than admire it. This role is a senior, full-stack product engineer who ships. You will work in a small pod, an engineering lead, a product owner who is a deep tax-domain expert, and two or three engineers, and you will own features end to end: sharpening the requirement, building it across the stack, testing it, shipping it, and standing behind it in production. What you'll do Own features end to end. From an ambiguous requirement to shipped, tested, and monitored. Not "my part of it": the feature. Sharpen requirements before you build. Our product owners are genuine tax experts, and part of the job is meeting them halfway: asking the question that turns domain knowledge into a spec, writing the acceptance criteria, and pushing back on a ticket that is not buildable yet. Engineers who need a perfect ticket to start will not enjoy this; engineers who make tickets better will thrive. Build across the stack. React frontends, TypeScript/Node services, PostgreSQL, event-driven backend wor