Senior Software Engineer

present of AI; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Orthogonal in San Francisco is hiring a Senior Full Stack Engineer to own features across a TypeScript backend, a Next.js frontend, and Postgres. You will ship end-to-end, from design through deployment and production support, in a fast-paced product environment.

A strong candidate brings 5+ years of full stack experience, solid grounding in data structures, system design, and API design, and a track record of leading projects or mentoring others.

Qualifications

• 5+ years of full stack experience in a fast-moving product environment.
• Strong grounding in data structures, system design and API design.
• Proven track record of leading projects or mentoring others.

Responsibilities

• Build features across a TypeScript backend, a Next.js frontend, and Postgres.
• Own work from design through deployment and production support.
• Collaborate with research, product, and design to ship quickly and keep code/docs clean.

Skills

Full stack TypeScript

Next.js

Postgres

API design

System design

End to end ownership

Payments or crypto exposure

Job description

Engineering · San Francisco, CA · Full-time · Senior level

This is an early full stack role building features across a TypeScript backend, a Next.js frontend, and Postgres, with ownership from design through deployment and production support. A strong candidate brings five or more years of full stack work in a fast moving product setting, solid grounding in data structures, system design, and API design, and a record of leading projects or mentoring others. The work also calls for close collaboration with research, product, and design, so comfort shipping quickly and keeping code and docs clean matters.

How it fits the AI era

The product itself is infrastructure for AI agents to find and pay for services, so the engineering work sits close to how agents transact. AI tools can speed up routine coding and review, but the core judgment stays human: designing reliable APIs, handling scale and payment edge cases, and deciding what to build. The role rewards people who can reason about agent driven traffic and keep systems dependable.

How it builds AI experience

Working here gives direct exposure to agent orchestration and payment flows, since the company builds the layer agents use to discover and pay for APIs. A candidate can build relevant experience by working with API design, billing or payment systems, and agent tooling, and by showing projects that connect services and handle transactions. Payments or crypto background is a plus that would deepen that fit.

Worth showing

• Full stack TypeScript
• Next.js and Postgres
• API and system design
• End to end ownership
• Payments or crypto exposure

This is our own read, written from the employer's posting and the company's Spotlight. The employer's posting is the source of truth for the role.

About Orthogonal

Per the company, Orthogonal gives AI agents one account and balance to discover, call, and pay for third-party APIs.