Senior Full-Stack Engineer — Platform & Web Systems

Level AI; Bellevue (WA); On-site; USD 180,000 - 240,000; Full time

Job summary

Level AI is hiring a Staff Fullstack Web Engineer to own end‑to‑end slices of Level's web experience. You will work from browser to API layers, shaping identity, onboarding, and authoring surfaces used by educators, students, and internal teams.

You will lead features across TypeScript front-ends and Kotlin/JVM backends, partner with web, mobile, and native teams, and raise the engineering bar on a senior-leaning team.

Qualifications

• 7+ years of professional full-stack web engineering experience with end-to-end ownership.
• Strong TypeScript and React skills with accessible UI patterns and performance focus.
• Strong backend experience in Kotlin or Java on the JVM, with long‑lived services design and operation.
• Solid understanding of HTTP, REST and gRPC with protobuf.
• Hands-on PostgreSQL experience and data modeling for product features.
• Working knowledge of AWS, containers (Docker/Kubernetes), and CI/CD pipelines.
• Strong testing discipline across unit, integration, and end-to-end tests.
• Excellent written and verbal communication; ability to lead design discussions and RFCs.
• Experience mentoring mid-level and associate engineers.

Responsibilities

• Own full-stack features from design through release and maintenance.
• Build platform-facing web surfaces and authentication/onboarding tooling across web/mobile/native clients.
• Design backend services and APIs (REST and gRPC) with clear data models and boundaries.
• Define reliability targets (SLOs/SLIs) with logging, metrics, and tracing.
• Apply web security fundamentals with focus on user data and privacy.
• Contribute to platform direction via RFCs and architecture reviews; participate in post‑mortems.
• Mentor mid-level and associate engineers through pairing and code reviews.

Skills

TypeScript

React

Kotlin/Java on JVM

REST & gRPC

PostgreSQL

AWS, Docker & Kubernetes

Testing discipline

Communication

Mentoring engineers

Tools

Docker

Kubernetes

Terraform

OpenTelemetry

Backstage

Job description

Level AI is hiring a Staff Fullstack Web Engineer to own end‑to‑end slices of Level's web experience. You will work from browser to API layers, shaping identity, onboarding, and authoring surfaces used by educators, students, and internal teams.

You will lead features across TypeScript front-ends and Kotlin/JVM backends, partner with web, mobile, and native teams, and raise the engineering bar on a senior-leaning team.