Sage Ideas
AI-native studio · since 2020
AI-native studio for founders & operators · since 2020
No handoff, no telephone game — the person who pitches you is the person who writes the code. I run my own products in production every day and put the same system — AI, apps, SaaS, brand, growth — to work for yours.
Free 20-min fit call · fixed scope · no contract to start.
One operator. The whole stack — and the AI that runs it.
$ stack --status --watch
Find the highest-leverage move — the product, market, and offer that actually compounds.
Full-stack product: schema to interface, auth to billing, shipped to production.
Agents, retrieval, copilots, and automation — AI wired into the real workflow, not bolted on. The core every other discipline runs through.
Identity, narrative, and a site that makes the product legible and premium.
Technical SEO, content systems, and compounding distribution loops.
Measure, improve, and publish — the machine keeps compounding after launch.
Read straight from the repos — real stack, honest status, hard counts, no mockups.
Fintech · Trading SaaS
The flagship fintech SaaS — member dashboard, Signal & Swing desks, admin operations, and Stripe billing. The largest, most mature system in the federation.
Next.js · React · TypeScript · Supabase/Postgres · Stripe · Playwright
AI · App factory
An AI app factory — describe an app in a sentence and ten agents plan, build in parallel, test-and-fix, QA-gate, review, and deploy it to a live URL.
TypeScript monorepo · Next.js · Postgres · Docker · multi-agent pipeline
EdTech · Voice AI
Speaking-first English coaching for Latin America — a full voice loop (STT, AI tutor, TTS, pronunciation scoring) over an adaptive FSRS fluency path.
Next.js 16 · Supabase · Deepgram · Claude · ElevenLabs · Capacitor
DevTools · Quality engineering
One CLI, 77+ quality runners — plans release gates, executes them across a DAG, scores readiness, and packages tamper-evident, cryptographically-signed audit evidence.
TypeScript monorepo · MCP server · Postgres RLS · Sigstore/SLSA L3
Consumer AI · Mobile
An AI comedy engine across web and mobile — 24 categories, six voice personas, and a taste model that learns what actually makes you laugh.
Expo · Next.js API · LightGBM · pgvector · RevenueCat
Open source · Quant
The open-source automation lab — a research engine, MCP server, Strategy + Bridge SDKs, a futures cost model, and a validation gauntlet, all agent-callable.
Python · MCP · Docker · NinjaTrader 8 · TradingView
Publication · Web
A tactical-editorial publication with a cyberpunk redesign — fully free, live in production on its own domain.
Next.js 15 · React 19 · MDX · Supabase · Resend
Seven shown — backed by 30+ more repos: trading ops, voice infrastructure, a CISSP study engine, an AI parts catalog, and shipped products.View all on GitHub →
Not a mockup — the live Swing Desk: a ranked board of setups that pass the regime gate and the composite-z threshold across the US stock universe, every candidate gauntlet-tested and scored. The same depth and finish go into what I build for you.
See the case studies →
Engage one capability or hand over the whole machine. Same operator, same standard, scoped to where the leverage actually is.
Agents, copilots, retrieval, voice, and workflow automation that run inside the real business.
→Full-stack products: schema to interface, auth to billing, observability to support.
→Identity, narrative, and a conversion site that makes the product legible and premium.
→Technical SEO, content systems, analytics, and compounding distribution loops.
→Every engagement starts small and earns the next step. You always know the timeline, the deliverable, and the price before you commit — and you keep what we build at every stage, whether or not you continue.
1 week · $750
Find the single highest-leverage bottleneck and leave with a scoped, costed build plan you own. Credited in full if you continue.
Weeks 1–2 · from $4,500
Ship one visible, production-grade improvement — real code, deployed, measured against conversion.
Weeks 3–8 · from $9,500
Turn the validated direction into the live product, site, AI systems, and offer engine.
Ongoing · monthly retainer
Measure, improve, and publish so the system compounds instead of quietly decaying.
A small studio can't be the right answer for everyone, and pretending otherwise wastes your time and mine. Here's the honest filter before you reach out.
A fit if you're…
Not a fit if you're…
Everything I run for clients, taught as a practical curriculum: code foundations, AI engineering, and shipping real products. $20/mo, founding cohort forming.
Entrez dans l'AcadémieShipped products you can open and a public build record going back to 2020.
No fabricated metrics, no invented testimonials, no fake screenshots. Every number above is openable on GitHub — and before you sign, you can get a real collaborator on the phone to verify exactly how I work.
Jason Teixeira is the AI engineer and application-building specialist who scopes the work and ships it. Product, brand, site, automation, growth loop: one accountable operator.
Read the founder profile →
Founder · principal engineer · Sage Ideas
No agency theatre. A short list of things the studio commits to on every engagement — verifiable, not aspirational.
You work with the operator who builds it — no account managers, no handoff, no dilution.
Real contracting from day one. Scope and IP protected on paper before code is written.
A public build record going back to 2020 — open the repos, read the commits, verify the work.
Every commit is read by a principal. AI accelerates the work; it never ships unchecked.
Most studios show you three hand-picked testimonials. I’ll connect you with real people I’ve built for — unfiltered, on the record. The person who pitches you is the person who types the code.
No invented quotes, no borrowed logos. Real named references on request — and added here as they’re permissioned.
An app, a brand, a SaaS, or all of it. Every engagement starts with a real conversation, not a contract.
