Senior Software Engineer - Backend & Agent Platform
Truewind
Software Engineering
San Francisco, CA, USA
USD 150k-190k / year + Equity
Posted on Jun 8, 2026
Truewind
AI-Powered Accounting
Senior Software Engineer - Backend & Agent Platform
$150K - $190K•0.10% - 0.25%•San Francisco, CA, US
Job type
Full-time Role
Engineering, Backend Experience
6+ years Visa
US citizen/visa only Skills
Amazon Web Services (AWS), PostgreSQL, React, TypeScript, Next.js, AI Agents Apply to Truewind and hundreds of other fast-growing YC startups with a single profile.
Apply to role › About the role
About Truewind
Truewind (YC W23) is modernizing the financial back office — combining intelligent software with concierge service to automate bookkeeping, close, and financial reporting for startups and accounting firms. Our product is an AI agent that turns messy financial inputs into reviewed, posted accounting work. We're a small team putting real AI-native workflows in front of real accounting teams every day.
The role
We're hiring a senior backend engineer to help build and strengthen the platform behind our AI agent — the systems that run agent work reliably and connect it to customers' accounting tools. This is a backend- and systems-leaning role for someone who cares about building dependable infrastructure for an AI-native product, and who's energized by reliability and correctness, not just shipping screens.
You'll join a small, high-ownership team where engineering sits close to the product. You'll have room to go deep, take real ownership over time, and shape how the platform evolves.
Where you'll have impact
We're intentionally not asking one person to carry everything. Depending on your strengths and interests, you'll grow into one or more of these areas over time, with a teammate alongside you:
- Backend services and APIs that power the product.
- Reliability and operations — helping our systems stay healthy and fast as we scale.
- Cloud infrastructure on AWS.
- Integrations with accounting platforms, where correctness really matters.
We work two-deep on important systems — you'll always have a partner, and we value people who document well and share what they know.
You might be a great fit if you
- Have built and run backend services in production and care about keeping them reliable.
- Are strong in backend TypeScript/Node.
- Have worked with asynchronous, data-intensive, or distributed systems.
- Are comfortable with cloud infrastructure (AWS) and relational databases (PostgreSQL).
- Prefer simple, focused solutions over complexity, and communicate clearly.
Bonus points for any of
- Experience building with LLMs / AI agents in production.
- Fintech or accounting domain exposure (ERP integrations, an auditability mindset).
- A track record at early-stage companies and comfort with ambiguity.
Our stack
TypeScript · Next.js · React · PostgreSQL · AWS — alongside modern AI tooling.
Benefits
Competitive salary and meaningful equity · health, dental, and vision insurance · twice-yearly off-sites in SF and NYC · a front-row seat on 0 → 1 AI product development.
About Truewind
At Truewind, our vision is a world where more startups succeed, where founders can access more variety of capital options, where every leader in an organization can access financial insights, and where investors can scale to invest in all the best companies.
Truewind modernizes the financial back-office for startups. Through a combination of intelligent software and concierge service, we deliver a delightful financial back office experience. Truewind is doing for the back-office what AWS did for computing — making it easy, scalable, and on-demand.
Truewind is a Y-Combinator company and backed by a set of fantastic set of firms, angels and our customers, including Scrum Ventures, Beat Ventures, Soma Capital. We are innovating on the financial infrastructure for private markets, building the repository for financial performance and reducing the friction to information sharing.