Associate Web Development Software Engineer (SDK)

Eulerity · Engineering

Where: New York, New York
Posted: Sep 23

Eulerity is a fast-growing marketing technology company transforming how franchises and small businesses approach digital advertising. Built by former leaders from Google, Facebook, and Yahoo!, our platform combines decades of experience in engineering and marketing to deliver an industry-leading, automated solution. We make it easy to plan, launch, and analyze paid campaigns across Google Search, Meta (Facebook/Instagram), Display, Video, and organic social - all from one intuitive platform. We believe breakthrough results happen when technology, strategy, and creativity come together. By combining automation with human insight, we empower brands to scale smarter, move faster, and grow stronger. Internally, we're just as committed to growth. We cultivate a culture where ambitious, curious, and driven individuals are empowered to lead, learn, and elevate those around them.

What you'd do

Experience building embeddable / third-party components — style and CSS isolation (shadow DOM or scoped styles), theming and customization, and secure auth/token handling inside a host app.
Monorepo and release tooling (e.g., Changesets, Turborepo, Nx) and automated CI release pipelines.
Backend / full-stack work (Java).
Technical writing and developer documentation experience.

What they want

Proven experience designing and shipping a developer-facing SDK, library, or public API consumed by other engineers — including the public API/interface design, semantic versioning, and backwards-compatibility discipline that come with it.
Strong separation-of-concerns judgment — able to design framework-agnostic core logic (data, state, domain types) cleanly decoupled from thin, framework-specific bindings, so the same core can support multiple front-end frameworks over time.
Experience packaging and distributing libraries: bundling (e.g., tsup, Rollup, Vite), ESM/CJS output, tree-shaking and bundle-size awareness, and npm publishing.
2–3 years of professional experience with React & TypeScript, including building reusable, composable components and using strong types as a public contract.
Well-versed in building custom AI automation workflows (LLM API integrations, agentic tooling, or similar).
Solid understanding of fundamentals (HTML/CSS/JavaScript, working with APIs).
Familiarity with standard engineering workflows (PRs, code review, agile).
Strong written communication, including clear technical documentation.
Based in the NYC Metro Area and able to work hybrid from our NYC office 3x per week.
Authorized to work in the US.

What you get

🩺 Comprehensive benefits
Medical
Dental
Vision
🏖️ Unlimited PTO
🍽️ In-office lunch stipend
🚅 Commuter benefits
📈 401(k) with company match
💻 Hybrid model (3x in office per week)
😎 Summer Fridays