Satish Rajnale
Satish Rajnale

Hi, I'm Satish.
I build AI-powered products, from the first idea to production.

I'm a Senior AI Product Engineer with 6+ years of experience helping turn ideas into working software.

I work directly with founders and teams to build new products, improve existing applications, and make AI-powered prototypes ready for real users.

From architecture and development to deployment and ongoing improvements, I can help you move your product forward.

Available for freelance projects, long-term contracts, and select senior engineering roles.
6+ YearsShipping Production Software
0 → 1 AIProducts, RAG & Autonomous Agents
Direct PartnerFounders, Startups & Product Teams

Services & Engagements

What I Can Help You With

Direct engineering partnership to build, ship, and scale software products without agency overhead or unnecessary complexity.

0 → 1 Launch

Build a New Product

Turn an idea into a working web, mobile, or AI-powered application, from planning to launch.

Key Focus Areas

  • Architecture & roadmap
  • Fast vertical slice (MVP)
  • Production backend & APIs
  • Modern web & mobile apps
Performance & Scale

Improve an Existing App

Fix bottlenecks, improve performance, complete unfinished features, and prepare your application for real users.

Key Focus Areas

  • Codebase & architecture audit
  • Latency & cost reduction
  • Unfinished feature delivery
  • Production hardening
Agents & Workflows

AI & Automation Engineering

Build AI agents, RAG systems, intelligent workflows, integrations, and reliable AI-powered features.

Key Focus Areas

  • Autonomous & human-in-the-loop agents
  • Context & vector retrieval (RAG)
  • Tool integrations & evals
  • Deterministic error recovery
Embedded Senior Engineer

Technical Partner / Contract Engineer

Work directly with an experienced engineer for architecture, implementation, technical decisions, and ongoing product development.

Key Focus Areas

  • Direct founder collaboration
  • Independent execution with clear milestones
  • Architecture and technology decisions
  • Transparent communication
Built an MVP with Cursor, Lovable, Bolt, or v0 that isn't ready for users?

I can review your code and architecture to pinpoint what needs hardening before launch.

Request a prototype review

Portfolio & Evidence

Selected Work

Real software products and engineering architectures solving practical, non-trivial problems across AI, backends, and mobile.

View all projects
ProfMe UI preview
Live Web Beta

AI-Powered Longitudinal Professional Memory & Context Retrieval

A professional intelligence product designed to help high-context professionals recover critical commitments, decisions, and relationship nuance before and after conversations. Built with FastAPI, Temporal durable orchestration, hybrid lexical/vector search, and a staged extraction pipeline that eliminates hallucination contamination.

Role:AI Product Engineer (End-to-End)
Hardest problem:Multi-modal meeting evidence extraction with deterministic context reconciliation.
Verified result:Sub-350ms hybrid vector + full-text retrieval with verifiable source quotes.
FastAPIPostgreSQLpgvector
TwoLines UI preview
Shipped to App Store · iOS & iPad

Intimate Shared Space for Couples · Real-Time Canvas, Rituals & Offline Sync

A consumer mobile application designed for two partners to share low-friction emotional rituals, real-time collaborative drawing, and private media. Built with React Native (New Architecture), Expo Router, Supabase Realtime, and RevenueCat subscriptions, with resilient offline stroke queuing and non-recursive RLS security.

Role:Product & Mobile Engineering
Hardest problem:Real-time collaborative touch canvas sync with offline queued strokes and Supabase channels.
Verified result:Zero-latency optimistic stroke rendering with reliable recovery upon reconnecting.
React NativeExpoSupabase
PrimeLife OS UI preview
Working Desktop Application

Local-First Personal Intelligence · SQLite Core, Durable Sync & Server AI Gateway

A personal productivity and intelligence system exploring how journaling, daily habits, tasks, and reflections converge with AI assistance—without forcing users into cloud chatbot silos. Built with a local-first SQLite architecture in Tauri/React, resilient outbox sync queues, and an authenticated FastAPI AI execution gateway.

Role:Product & Full-Stack Engineer
Hardest problem:Local-first SQLite state surviving network outages with authenticated server-side AI execution.
Verified result:100% offline local productivity flow with durable transaction journal replay.
TauriReactTypeScript
Sovereign Intelligence UI preview
Architecture Thesis & R&D

Architectural Thesis & R&D · User-Owned Intelligence, Trust Boundaries & Provenance

An architectural research framework exploring trustworthy AI systems built around user data sovereignty, multi-tiered trust boundaries, verifiable evidence lineage, and reversible human-in-the-loop proposals.

Role:Systems & AI Architect
Hardest problem:User-owned trust boundaries, verifiable evidence layers, and multi-model system design.
Verified result:Deterministic state authority gate ensuring AI models cannot mutate data without user signing.
System ArchitectureData SovereigntyTrust Boundaries

Process

How I Work With You

Building software isn't just about writing code—it's about making the right technical decisions, keeping costs predictable, and launching something useful that real customers can trust.

01

Understand Your Idea

We start with what you're trying to build, who it's for, and what success should look like. I'll help you figure out what's worth building first.

02

Plan the Right Solution

I help choose the technology, architecture, and approach that fit your goals, timeline, and budget, without adding unnecessary complexity.

03

Build and Launch

From AI integrations and backend systems to full-stack applications, I handle the engineering needed to turn the plan into a working product.

04

Improve and Grow

Launching is just the beginning. I can help improve performance, fix reliability issues, add features, and adapt the product based on real customer feedback.

What I'm Working On

I build and refine AI-powered software—from professional memory systems to intelligent automation tools. Through these products, I tackle the real-world friction of shipping software: model reliability, latency, local-first sync, and intuitive user experience.

Typical Engagement Formats

0 → 1 MVP Build

A focused 3–6 week sprint turning your unbuilt idea or Figma design into a working, production-ready product.

AI Prototype Hardening

Taking prototypes built with Cursor, Lovable, Bolt, or v0 and fixing state sync, rate limits, and reliability before real users arrive.

Contract / Embedded Senior Engineer

Working 10–20 hours/week directly with your team on architecture, core implementation, and high-velocity shipping.

Writing & Research

Engineering Insights

Practical essays and teardowns on building AI agents, token economics, context systems, and production architectures.

Read all articles

A Little About Me

I'm Satish, a Senior AI Product Engineer with 6+ years of experience building software across backend systems, full-stack applications, mobile development, and AI-powered products.

I enjoy working on products from the earliest idea through architecture, development, deployment, and continuous improvement.

I've also built my own products, so I understand that building software isn't just about writing code. It's about making the right technical decisions, managing costs, dealing with unexpected problems, and getting something useful into people's hands.

I work directly with founders and teams who value practical engineering, clear communication, and someone who takes ownership of what they build.

Let's Collaborate

Have a Product Idea or Something That Needs Fixing?

Whether you're starting from scratch, improving an existing app, or looking for an experienced engineer to help move your project forward, I'd be happy to hear what you're working on.

Tell me a little about your idea, the challenges you're facing, and what you'd like to achieve. We can explore whether I'm the right person to help.