Nir Lichtenstein

Senior Full-Stack Engineer·System Architecture Focus
Professional Summary

Senior Full-Stack Engineer with 20 years of experience in software development and strong end-to-end architectural ownership. Designed and delivered production-grade SaaS platforms, CRM systems, transactional workflows, and AI-powered semantic search infrastructure. Experienced in relational data modeling, role-based permission systems, embedding-based search, international SEO architecture, and production deployment. Hands-on across the full stack with a focus on modular system design, scalability, and long-term maintainability.

Communication & Leadership

Strong communicator with proven ability to lead remote and on-site teams, align cross-functional stakeholders, and translate complex technical systems into clear executive narratives. Experienced in client-facing work across written, verbal, and presentation formats — from direct service interactions to leadership briefings. Comfortable operating at the intersection of engineering and business, building trust with both technical teams and non-technical decision-makers.

How I Work
Systems before features

I spend time upfront understanding the full data model and edge cases before writing the first line. This reduces rework and makes the codebase easier to extend over time.

Ownership end-to-end

I don't hand off at the API boundary. I care about how data flows from the database schema through to the UI — and how it performs in production.

Communication as part of the craft

I work well with non-technical stakeholders. I translate between business requirements and engineering constraints, and I write documentation others can actually use.

Pragmatic over perfect

I know when to apply the elegant solution and when the simple one is correct. Over-engineering is a risk I take seriously.

Core Expertise
Architecture & Backend
  • Modular System Architecture
  • Advanced Relational Data Modeling (PostgreSQL)
  • Role-Based Access Control (RBAC)
  • Transactional Workflow Design
  • REST API Design
  • Database Indexing & Query Optimization
  • Production Deployment & Monitoring
AI & Search Systems
  • OpenAI Embedding Integration
  • Vector Storage & Cosine Similarity Search
  • Semantic Search Implementation
  • AI-Driven Content & Workflow Pipelines
  • Incremental Recompute Strategy for Embeddings
Frontend & SEO Engineering
  • React Component Architecture
  • Responsive & RTL UI Design
  • Programmatic SEO Implementation
  • Hreflang & i18n Architecture
  • Geo-Targeting Systems
  • Structured Data & Metadata Automation
  • Cookie Consent & GDPR Compliance
Technologies
TypeScriptNext.jsReactPrisma ORMPostgreSQLtRPCREST APIsTailwind CSS
Professional Experience
Systems Architect
2023 – 2026
  • Designed and built scalable SaaS platforms including donation management, volunteer coordination, and structured content systems.
  • Implemented granular RBAC with role-scoped dashboards and transactional donation workflows with automated PDF generation.
  • Built AI-powered semantic search using OpenAI embeddings stored in PostgreSQL with cosine similarity querying and incremental recompute strategy.
  • Architected multi-country content platform with programmatic SEO, hreflang, geo-targeting, and structured data automation.
  • Owned full deployment lifecycle including database migrations, environment configuration, and production monitoring.
Technical Team Lead
2021 – 2023
  • Led a team of 5 developers in designing and delivering CRM and trading platforms.
  • Defined system architecture and relational database schemas.
  • Designed consistent, idempotent transactional workflows using state-based process modeling.
  • Managed deployment pipelines and production monitoring.
Software Developer
2004 – 2020
  • Built and maintained web-based systems including CMS platforms, e-commerce solutions, and custom business applications.
  • Developed strong foundations in relational database design, backend architecture, and full development lifecycle ownership.
Education
M.A.Philosophy
B.A.Philosophy
nir-lichtenstein.com/cv2025