Skip to main content
Full-Stack SaaS Builder & AI Engineer

From idea to
working product
in 4–8 weeks.

I build SaaS MVPs that are ready to show investors and onboard real users — with auth, database, AI features, billing, and deployment included.

$7k
MVP Build starting at
4–8w
From kickoff to deployed product
100+
Projects delivered end-to-end
Top 1%
Expert-Vetted on Upwork
01

Four ways
to work together

Main service
$7,000–14,000
per project · 4–8 weeks

SaaS MVP Build

A full-stack MVP built to show investors or onboard real users — not a prototype. Auth, database, AI features, billing, and deployment. Done in 4–8 weeks.

Start your MVP
  • Product scoping and technical planning
  • Next.js frontend + Node.js backend
  • Authentication and core user workflows
  • Database setup (Supabase / Postgres)
  • Stripe billing + admin dashboard
  • AI features (RAG, agents, integrations)
  • Weekly demos throughout the build
  • Deployment-ready + 2 weeks post-launch support
Ongoing
$4,500–6,000
per month

AI SaaS Retainer

An embedded senior AI engineer who knows your codebase and roadmap. Steady output every month without a full-time hire.

  • 40 hrs/mo, outcomes-focused delivery
  • RAG, agents, voice AI, embeddings
  • Backend, API, Supabase/Postgres work
  • Architecture decisions and code review
  • Weekly sync + async Loom updates
Start a retainer
Lowest risk
$800
one-time

AI Architecture Audit

A clear, honest read on where AI fits in your product — before you spend months building the wrong thing. Includes a prioritised 90-day roadmap.

  • AI feature opportunity analysis
  • Recommended stack + risks + costs
  • Written findings doc you can share
  • Cost credited toward a retainer or project
Book an audit
Fixed scope
$3,500–8,000
per project

AI Feature Integration

Production-grade AI added to your existing SaaS. Clean integration into your repo, properly architected, documented and tested.

  • RAG pipeline (pgvector, LangChain, embeddings)
  • OpenAI agents and tool use
  • Voice AI (ElevenLabs, LiveKit, Tavus)
  • Multi-tenant document ingestion
  • White-label / agency subcontracting OK
Scope a project
02

How engagements
typically start

01
Short brief

Send a few sentences on your product and the AI problem you're trying to solve. No deck required.

02
Scoping call

30-minute call to align on goals, stack, and whether this is the right fit — for both sides.

03
Proposal

A clear proposal: fixed price or retainer, deliverables, timeline. No surprises later.

04
Kickoff

If it's a fit, first work starts within days. NDAs and contractor agreements are standard.

03

Why AI engineers
usually disappoint

Most founders waste the first three months building the wrong version of their product. They over-engineer features users don't need yet, or under-build the things that actually matter for a first demo — and end up with something that's neither shippable nor fundable.

I've spent 15+ years shipping full-stack products across SaaS, fintech, and enterprise. My focus is the fastest path to a usable, production-ready v1: define the leanest scope, build the core flows properly, and deliver something you can put in front of real users.

That means auth that works, a database schema that won't need a full rewrite, billing you can actually charge through, and AI features that aren't just a wrapper around an OpenAI call. Every project includes weekly demos so there are no surprises at the end.

I work with non-technical founders, early-stage startups, and teams that need a senior builder who can also shape product decisions — not just execute a spec.

Core stack

Next.jsNode.jsTypeScriptSupabasePostgresOpenAILangChainpgvectorLiveKitElevenLabsStripeVercel
15+
Years building production software across SaaS, fintech, and enterprise
100+
Projects delivered, including MVPs, platform rebuilds, and AI feature integrations
Top 1%
Expert-Vetted on Upwork — fewer than 1% of freelancers on the platform hold this designation
04

What clients say

★★★★★
Alex is the consummate professional, and he is highly skilled. I trust him with our projects. When Alex is on a project, we know it will be done correctly and on time.
Brooke Brown
EAB
★★★★★
Alex is a world-class developer who is head and shoulders above what is considered standard. All work was completed way ahead of time — we had a hard time keeping up to give him new tasks.
Jacob Davis
Bizfluence
★★★★★
Excellent understanding of tasks. Great communication and very efficient. Alex has been a pleasure to deal with among a sea of complicated and frustrating freelancers. A breath of fresh air.
Aaron Couch
Evolution

Ready to start

Not sure what
to build first?

A 30-minute strategy call is enough to map the right scope, timeline, and budget for your MVP. No deck required — just a description of what you're trying to build.

Book a strategy callSend an email
alexey.voronkov1988@gmail.com