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What We Do

AI & Software Engineering Services

From autonomous AI agents and citation-grounded RAG pipelines to dedicated full-stack engineering pods and turnkey SaaS builds—every engagement is directed by senior operators who run 15 live products of our own.

FLAGSHIP AI PRACTICE

AI Agents, Hybrid RAG & MCP Systems

Production-grade autonomous AI agents, citation-grounded PostgreSQL pgvector retrieval, Model Context Protocol (MCP) servers, and multi-model LLM gateways engineered with deterministic evaluation harnesses.

Explore AI Agents, Hybrid RAG & MCP Systems

Key Delivery Guarantees

Typed state-machine AI agents with human-in-the-loop approval gates
Hybrid dense + BM25 Reciprocal Rank Fusion (RRF) RAG with tenant RLS
Zero-Data-Retention (ZDR) AWS Bedrock, Vertex AI, OpenAI & Anthropic routing
CI evaluation suites & prompt prefix caching cutting token spend 45–65%
RETAINED PODS

Dedicated Engineering Teams

A retained bench of senior AI, backend, frontend, and mobile engineers working inside your Slack and GitHub as a cohesive extension of your product org—directed by Miami and Tel Aviv operators.

Explore Dedicated Engineering Teams

Key Delivery Guarantees

Retained full-time engineers with average 2–6 year tenure
Named US or Israel senior operator owning architecture & PR governance
5-business-day engineer replacement guarantee at our cost
Elastic month-to-month scaling after initial 3-month sprint
MILESTONE SOW

End-to-End Project Builds

Fixed-scope, milestone-billed software and AI product delivery—from architecture blueprint and risk register through full-stack engineering, hardening, and production handover.

Explore End-to-End Project Builds

Key Delivery Guarantees

Named architect written directly into the Statement of Work
Deployable production foundation in Sprint 1—never slideware
Full CI/CD, automated tests, observability runbooks & 30-day warranty
100% client IP ownership assigned from day one
FRACTIONAL CTO

Technical & AI Readiness Advisory

Executive CTO planning, LLM security and gross-margin modeling, cloud cost optimization, database refactoring, and Series A/B or PE technical due-diligence preparation.

Explore Technical & AI Readiness Advisory

Key Delivery Guarantees

Fractional CTO leadership from operators running 15 live SaaS products
AI security, SOC 2 / HIPAA enclave design & token unit-economics audit
PostgreSQL query tuning, multi-tenant isolation & cloud spend reduction
Investor & acquirer technical due-diligence readiness
ZERO-DOWNTIME EVOLUTION

Legacy-to-AI Modernization & API Middleware

Connect siloed ERPs, CRMs, billing ledgers, and legacy PHP/.NET/Java monoliths to modern React frontends and AI copilots via resilient event-driven APIs and MCP servers.

Explore Legacy-to-AI Modernization & API Middleware

Key Delivery Guarantees

Strangler-Fig facade & read-replica CDC vector indexing with zero OLTP impact
Idempotent webhook hubs for Stripe, Salesforce, NetSuite, HubSpot & HL7/FHIR
Dead-letter queues, exponential backoff & end-to-end trace observability
Model Context Protocol (MCP) wrappers exposing internal tools safely
AGENCY & PE PARTNERS

White-Label Engineering Delivery

Scale your digital agency, advisory practice, or PE portfolio throughput invisibly with a retained engineering department operating under your brand and domain.

Explore White-Label Engineering Delivery

Key Delivery Guarantees

Strict NDA invisibility using your Slack, Jira, and email domains
Operator-reviewed PRs matching your internal coding conventions
Predictable margin structure for fixed-bid or retainer client accounts
Multi-year engineer continuity across client engagements
Interactive AI & SaaS Architecture Configurator

Configure your production AI or software architecture in 15 seconds.

Select what you are building, your security posture, and your target velocity to inspect the exact reference stack, guardrails, and operator pod Eternitech deploys—drawn from running 15 live SaaS & AI products of our own.

1. Select System Architecture
2. Data Privacy & Compliance Posture
3. Engagement Velocity
REFERENCE ARCHITECTURE SPECIFICATION

Autonomous AI Agents & Workflows

AWS Bedrock / GCP Vertex Private Endpoints

Deterministic state-machine agents with typed tool execution, human-in-the-loop approval gates, and CI regression evals.

UX & Edge Layer
Next.js App Router + Streaming SSE Action Cards
Orchestration & API
Python FastAPI + Typed State Graph + Queue Workers
Vector & State Store
PostgreSQL 16 + pgvector + Redis Idempotency Store
LLM Gateway & Evals
Multi-Model Router (Claude Sonnet / GPT-4o) + Golden-Dataset CI Evals
Operator-Enforced Guardrails & Security Controls
  • Strict JSON Schema constrained decoding on every tool invocation
  • Human-in-the-loop cryptographic approval gate before mutating external systems
  • Per-run token budget ceiling and loop-detection circuit breakers
  • Zero-Data-Retention (ZDR) inference endpoints, immutable tool-call audit logs, and SAML/OIDC SSO.
Target Latency: < 1.1s TTFTCI Quality Gate: 100+ golden trajectories in CIUnit Economics: 45–65% via prompt prefix caching
Assigned Pod: 1 Miami/Tel Aviv Senior Operator + 2–3 Senior Full-Stack & AI Engineers — Weekly production demos, architecture ADR sign-off in Week 1, live customer cutover in Weeks 6–8.
Live Owned Proof: Tabitha — Owned & operated conversational AI assistant running multi-provider LLM routing and automated moderation since 2024.

Tell us what you're building.

No pitch deck required. Just a description of what you need. We'll come back with a scope breakdown — and we'll be honest if we're not the right fit.

⚡️Scope & architectural analysis in roughly 60 seconds.