Software Engineer, Software Architect

STAFF SOFTWARE ENGINEERAbout Onshore

Onshore is the modern standard for U.S. companies claiming the R&D tax credit.
We find, document, and defend the tax credits and deductions that farms,
manufacturers, architects, and engineers have earned. Claiming the R&D tax
credit has historically been an ordeal full of consultants, spreadsheets, and
hidden fees. Now, our software and AI-powered solutions read every line of a
client's records against the tax code, produce verified computations, and are
reviewed by a credentialed tax professional before filing.

Engineering at Onshore is three teams, and Staff engineers own their technical
direction. Platform & Agents builds the infrastructure everyone else runs on:
the agent execution framework behind every study, the evaluation harness that
proves agent output is correct before an expert sees it, and the tooling
operators use to run engagements. Agriculture turns farm records into defensible
R&D credit computations and is expanding into livestock, dairy, and soil
fertility deductions. Corporate Tax & Compliance is taking Onshore from credit
studies to the filing itself, with full corporate returns targeting general
availability in early 2027.

Staff is the top of our ladder and it is an engineering role in the fullest
sense. We run a technical leadership model: no direct reports by default, and
your influence comes through architecture, code, and technical direction rather
than headcount. You will never be asked to trade your editor for a calendar. The
first Staff engineers here set the direction the next ten engineers inherit.

• Define and drive the technical strategy for one of Onshore's three pillars, including multi-year architecture decisions across agent infrastructure, tax computation, and data pipelines
• Own end-to-end technical solutions for the systems that can't be wrong: durable agent workflows, versioned tax computation, evaluation infrastructure, filing pipelines
• Identify and lead the infrastructure investments that unlock what's next: new study types, new entity and state coverage, and higher leverage for the operators who run engagements
• Make principled build-versus-buy decisions and produce technical roadmaps that balance near-term delivery against long-term platform health
• Advise the founders and engineering leadership on technical trade-offs and their downstream implications for the business
• Multiply the team: your primitives, designs, and reviews raise what every other engineer ships

• 8+ years of software engineering experience, with demonstrated impact at staff or equivalent scope: leading initiatives across multiple teams or systems.
• A proven track record designing and shipping systems that are both highly available and correct, in domains where wrong output has consequences.
• Deep architectural judgment paired with genuinely fast hands. You prototype to think, and your strategy shows up as code.
• The ability to influence technical direction and align teams without direct authority, with excellent written and verbal communication across engineering and leadership.
• High ownership: comfortable with ambiguity, able to define the problem and the plan rather than execute a predefined spec.
• Able to work in person at our New York City office.

• Experience making LLM-powered systems production-reliable: agents, evaluation infrastructure, structured extraction  know the distance between a demo and a system users rely on.
• Experience owning platforms other teams built on, and the judgment about primitives versus one-offs that comes with it.
• Compliance-aware system design: audit trails, data lineage, financial controls, or regulated-domain experience.
• Experience with correctness-critical computation:…