Frontend Engineer: Real-Time, Secure Web Apps

Quantum Technologies LLC; San Jose (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Quantum Technologies. LLC is seeking a skilled frontend/backend engineer to translate customer requests into persona-driven journeys and prototype interfaces using modern UI tooling.

You will select appropriate SPA/SSR stacks and optimize web build pipelines while ensuring secure, scalable client/server communications. Responsibilities include architecture refinement, GenAI-assisted development, and rigorous testing with CI gates.

Qualifications

• Translate customer requests into persona-driven Critical User Journeys (CUJs).
• Prototype via wireframes; create/iterate UI concepts.
• Experience with modern UI stacks (React/Angular/Vue) and design systems is a plus.
• Proficient with SPA/SSR framework choices and web build pipelines.

Responsibilities

• Design and engineer to defined quality tiers (PoC, Integrated Prototype, MVP, MLP).
• Balance architecture decisions and testing to match target quality.
• Leverage GenAI coding tools within a product requirements → technical design → feature specs workflow.
• Perform code reviews, implement CI gates, and conduct deterministic API/transport testing and E2E journeys.

Skills

CUJ mapping

Wireframes

Figma

Tailwind CSS

Material Design

SPA/SSR frameworks

Web build pipelines

GCP basics

Distributed tracing/logging

RBAC/ABAC

SSE/WebSockets

Enterprise SSO

REST/OpenAPI/gRPC

Caching/Async/concurrency

Web security (XSS/CSRF/CSP)

PII/PHI handling

Tools

GCP

Job description

Quantum Technologies. LLC is seeking a skilled frontend/backend engineer to translate customer requests into persona-driven journeys and prototype interfaces using modern UI tooling.

You will select appropriate SPA/SSR stacks and optimize web build pipelines while ensuring secure, scalable client/server communications. Responsibilities include architecture refinement, GenAI-assisted development, and rigorous testing with CI gates.