Invental/ Experts

Experts.

Fractional CTOs, architects and senior reviewers from the Invental network. Bring them in for paid code review per pull request, an architecture review or design, technical due diligence, or the rescue of a vibe-coded app.

18 · experts 18 buyer needs 239 track records and bookable reviews Contracted through Invental

Start from the problem

Each page below matches a buyer need to the experts who lead on it, with cases from their profiles and the questions buyers ask.

For founders

For investors and acquirers

AI agents and AI-assisted teams

Security and infrastructure

Review capacity and leadership

By domain and stack

All experts · filter by service
CTO-level

M&A due-diligence and high-load architecture CTO

Best for: investors and acquirers · scale-ups with a high-load Java backend · corporate innovation / enterprise R&D teams · founders whose AI-generated codebase has lost its architecture.

Code review, Arch. review +4View profile →
 senior mobile engineer and mobile architect

Mobile architect for multi-market consumer apps

Best for: seed and Series A startups with a consumer app · scale-ups expanding an app into new countries · corporate teams that must make an app accessible · founders who need a second opinion on a mobile codebase.

Code review, Arch. review +4View profile →
 founder-CTO / founding product engineer

0→1 founder-CTO for data-heavy SaaS and agent-ready tooling

Best for: solo founders and seed startups building a data or AI product · SaaS teams adding an API or MCP server · developer-tool companies whose CLI or API will be called by AI agents · founders who want product and engineering advice in one person.

Code review, Arch. review +4View profile →
 executive / CTO-level

Fintech and payments platform CTO

Best for: fintech and marketplace startups · scale-ups re-planning their backend · corporate teams that need a system-design owner · founders inheriting a codebase from a departed team.

Arch. review, Arch. design +3View profile →
 15+ years

Early-stage CTO for AI-first startups, trading systems and pre-raise foundations

Best for: solo founders and pre-seed / seed startups · teams building trading or market-data systems · B2B AI vendors rolling out to enterprise sales teams.

Code review, Arch. review +4View profile →
 senior / lead backend engineer

High-load backend lead for payments and consumer platforms

Best for: seed startup · scale-up · corporate innovation team (especially teams where non-engineers ship with AI tools).

Code review, Arch. review +4View profile →
 senior data / ML engineer with more than a decade in data engineering

Founding data engineer: DWH, ML and LLM systems from zero

Best for: solo founder · seed startup · scale-up (especially the ~50-person "our numbers don't match" stage).

Code review, Arch. review +3View profile →
 senior backend engineer

PHP/Symfony backend and database-design specialist for payments

Best for: seed startup · scale-up · fintech / payments teams · corporate teams running PHP products.

Code review, Arch. review +3View profile →
 mid-level engineer

Hands-on engineer for concurrency, transactional correctness and real-time 3D

Best for: seed startup · scale-up teams with junior and mid-level developers · game and 3D studios.

Code review, Arch. review +2View profile →
 CTO-level

Continuous-delivery fractional CTO

Best for: solo founders with a vibe-coded MVP · seed startups without a CTO · scale-ups after a funding round · investors needing a quick technical audit · CTOs who want an outside second opinion.

Code review, Arch. review +4View profile →
 engineering leader and principal-level JavaScript / TypeScript architect

AI-assisted development and JavaScript architecture lead

Best for: teams adopting AI coding agents who want quality to hold · JS/TS scale-ups with growing architecture debt · founders with an AI-built app that needs a senior review · corporate teams training engineers in TDD.

Code review, Arch. review +4View profile →
 senior engineering leader

Infrastructure and cloud-security engineering leader

Best for: scale-ups and e-commerce or fintech platforms facing PCI-DSS, edge-security or cloud-cost pressure; seed startups that need an infrastructure baseline before launch; investors who want an infrastructure and security read on a target..

Arch. review, Arch. design +2View profile →
 staff / lead-level full-stack engineer

AI-native staff engineer

Best for: solo founders and seed startups adopting AI coding tools; small SaaS teams preparing for SOC 2 / ISO 27001; teams migrating a Vue front end to Next.js; companies that want juniors coached by someone who teaches..

Code review, Arch. review +4View profile →
 senior individual contributor

Agent-reliability engineer

Best for: seed startups and small companies putting LLM agents into production; teams whose agent works in demos but fails in production; small businesses automating lead or intake workflows; companies that want their website usable by AI agents..

Code review, Arch. review +2View profile →
 senior individual contributor

Fintech-backend reviewer (Java/Spring, event-driven payments)

Best for: seed and Series A fintech startups · scale-ups with a Java or Node backend that need a second senior reviewer · teams cleaning up AI-assisted code.

Code review, Vibe-code rescue +1View profile →
 mid-level backend engineer

Big-tech backend reviewer for mid-level PRs

Best for: solo founders and seed startups that need a disciplined second pair of eyes on backend PRs · teams preparing engineers for a big-tech code-quality bar.

Code review, MentoringView profile →
 engineering and delivery manager who still writes code

Regulated-delivery manager (banking SDLC and governance)

Best for: fintech startups preparing to work with banks · scale-ups whose delivery process needs structure · corporate teams managing outsourced vendors.

Code review, MentoringView profile →
 mid-level full-stack web developer

SMB full-stack builder (dashboards, automation, execution help)

Best for: solo founders and SMBs that need a builder under a senior lead · agencies that need extra execution capacity on Laravel/Vue/Node work.

Code reviewView profile →

How it works

  1. Tell us what you need — the repo or system, the question, and the deadline.
  2. We match an expert from the network, with a second reviewer where it helps.
  3. Scoped work, contracted through Invental — review per pull request, a fixed-scope audit or architecture review, or ongoing capacity.

— Invental · software studio · Montevideo, UY

Not sure who fits?

Describe what you are building and what worries you about it. We suggest the right expert, or a pair, and confirm scope before anything starts.

— Get in touch
hi@invental.co ↗
— Or
— What to include

A link or short description of the code or system, what you want checked, your stack, and when you need the answer. No repository access is needed until scope is agreed.

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