Staff Engineer

Staff Engineer, Thera (NYC, in-person)Thera is building the financial OS for modern SMBs. Payroll, payments, treasury, spend, accounting, and docs in one system that actually works end-to-end.We're looking for a hands-on Staff Engineer to own the technical foundation in our highest-leverage areas and help us scale from "great product" to category-defining company.This is not a sit-back-and-manage role. You'll be in the code, in the architecture, and in the room making high-stakes decisions daily.NYC, 5 days/weekWhy this role existsWe have:a product customers usereal workflows running through itincreasing complexity across payments, accounting, and opsWe need someone who can turn that into a durable, scalable system.What you'll ownArchitecture and technical direction across payroll, payments, and new productsEngineering execution on the hardest problems in the stackHelping hire and tech-lead a small, high-quality team (starting ~5 engineers)Decisions on security, reliability, scalability, and compliance in your areasTight partnership with product and ops to translate real workflows into systemsRoadmaps, prioritization, and actually shippingWhat you'll buildSystems powering payroll and money movementProducts across Spend, Docs, Cash, and AccountingInternal tooling that reduces manual work and errorsInfrastructure that increases velocity without breaking thingsYour first 90 days30 daysGet deep on the system, data flows, and constraintsIdentify the biggest risks (payments, data integrity, scaling)Ship a meaningful improvement on the spend product60 daysStart addressing the highest-leverage technical gapsMap out future builds across the roadmapBegin influencing how we hire and level engineers90 daysSet technical direction in your areasImprove engineering velocity and reliabilityHelp build out our engineering in-person cultureAbout youYou've built and scaled real systemsYou're still hands-on and like being close to the codeStrong systems thinkerYou move fast and take ownershipComfortable operating in a regulated environmentYou've mentored or tech-led engineers beforeStack today: TypeScript + Java/Kotlin (flexible)Not a fit ifYou want a pure management roleYou avoid ambiguity or messy real-world systemsYou're not willing to be in-person in NYCWhy TheraYou shape the technical foundation in your areasYou work directly with foundersYour decisions immediately impact the company's trajectoryBacked by YC, 10X Founders, Zillionize, and Amino Capital.