MT
MRT / PORTFOLIO
Jerusalem, IL — Open to hybrid & remote roles

Miriam R Teller

Senior Product Designer — Front-End Lead

Great UI should be instantly understandable for any user — mobile-first, pixel-perfect, and accessible by default, in whichever direction the text runs.

ממשק טוב צריך להיות מובן באופן מיידי לכל משתמש — נייד קודם, מדויק לפיקסל, ונגיש כברירת מחדל, בכל כיוון שהטקסט זורם.

About

Design systems, shipped end‑to‑end

Ships WCAG-compliant, RTL/i18n-ready interfaces and reusable component systems — Figma, MUI, Storybook — end-to-end, from concept to production. Recently AI-native, orchestrating a multi-model dev fleet (Cursor, Tasklet, OpenRouter) for coding, planning, and design prototyping, and shipping Claude/OpenAI integrations validated by hands-on user research.

Native-level fluency in English and Hebrew, with 10+ years of professional and spoken use — comfortable owning bilingual product experiences from research through to release.

Capabilities

Toolkit

Design & Prototyping
FigmaAdobe XDStorybook Design SystemsWCAG 2.1 AA RTLi18n

Direction (RTL/LTR) is resolved once, centrally, from user and tenant language settings — never scattered per-page or stored as its own field.

Frontend
React 18Next.jsRedux HTML/CSS/SASSVueAngularJS Mobile-First Responsive UI
Backend & SaaS
Node.jsExpress.jsSupabase PostgreSQLStripeREST APIs
Architecture
MicrofrontendsMonorepos (Nx) Component LibrariesPerformance Optimization API Design
AI Integration
Multi-Model OrchestrationPrompt Engineering LLM EvaluationHITL Workflows Structured OutputsAI Guardrails
Languages
English — NativeHebrew — Fluent, 10+ yrs
Experience

Track record

2026 — present

Senior Fullstack & AI Integration Engineer

Freelance, Jerusalem

  • Architected and built a multi-tenant SaaS platform: React 18, TypeScript, Node.js, Supabase/PostgreSQL, Stripe.
  • Designed user-facing AI interactions with review loops, integrating Claude and OpenAI APIs.
  • Recruited a beta cohort and ran usability sessions to validate and shape features.
  • Developed structured JSON outputs and AI guardrails for safe, reliable AI content.
  • Logged prompts, costs, and errors; ran regression tests to refine UX.
  • Secured the platform with PostgreSQL RLS and multi-tenant isolation; owned delivery end-to-end.
  • Automated WCAG 2.1 AA testing in CI/CD, enforced on every front-end change.
2021 — 2025

Senior Front-End Engineer — Team Lead

Rapaport, Jerusalem

  • Defined and built a shared design system with MUI components and custom hooks for cross-team UI consistency.
  • Upgraded micro-frontend developer experience (Nx, pnpm, Husky) for faster delivery.
  • Redesigned rendering in data-heavy views to solve severe usability lag.
  • Reworked tangled data flows into clear, predictable interactions for scalable feature merging.
  • Led a TypeScript rewrite that cut customer-facing issues by 50%.
  • Mentored front-end developers on UI craft and code quality, doubling team capacity.
  • Integrated Sentry to catch UI/UX regressions early.
2020 — 2021

Lead Front-End Developer

BenManage, Beitar Illit — Figma, Vue, Tailwind, Next.js, Nx, Storybook, AWS

  • Designed and built a new onboarding app mobile-first in React, Material UI, and Next.js — wireframe to production.
  • Designed and implemented the company website using Figma, Vue, and Tailwind.
  • Built a shared component library with Storybook and Nx to standardize UI patterns.
2018 — 2020

Freelance Full Stack Developer

Modestiq · Perry Systems · Compuskills · Soris Software

  • React, Vue, AngularJS, C#, Entity Framework, SQL — UI/UX, frontend instruction, Adobe XD, mobile-responsive builds.
2016 — 2018

Software Developer Intern

Soris Software — .NET, MVC, ASP.NET, MySQL

Education

Foundation

BSc Computing and IT (Hons), The Open University, UK — Java, Python, Algorithms, UI/UX