Document ingestion
RAG pipeline ready
$ ingest workspace_docs
→ chunk · embed · index · verify sources
Alexandru-Stefan Cervinschi · AI-Native Full-Stack Builder
I build AI products that solve real workflows.
Full-stack developer with 5+ years of experience building AI-powered SaaS products, RAG workflows and developer tools. Founder of Hyper Development and available for full-time B2B opportunities across Europe.
Available for full-time B2B opportunities · Remote Europe
Based in Romania · Europe
B2B through Hyper Development ASC SRL
Built by Alexandru-Stefan Cervinschi
Agent workflow
running
tool retrieve_context(question)
tool draft_answer(schema)
check source coverage + tone
Validated output
prototype validated
answer grounded_response.v2
sources policy.pdf · faq.md · admin note
TypeScriptNext.jsNestJSPostgreSQLPrismaRAGLangGraphDockerStripeAWS
01 / Selected Work
AI products and developer tools built by me.
From document-grounded customer support to repository-aware code review and adaptive learning workflows.
Nexivo
Document-grounded AI support for SMEs.
Nexivo is a multi-tenant AI chatbot SaaS designed for businesses that need contextual customer support based on their own documents and FAQs. It combines an embeddable chat widget, workspace-based administration, AI retrieval workflows and subscription-ready SaaS infrastructure.
- Document-grounded chat
- Embeddable support widget
- Multi-tenant workspace architecture
- Subscription-ready billing flows
- Feedback-driven answer improvement
Next.js · NestJS · PostgreSQL · Prisma · RAG · Stripe · Docker
Interface preview
Can I return a product after the standard window?
Based on the uploaded policy, exceptions can be reviewed when the order has documented delivery delays or a warranty-related issue. The support team should request the order ID before confirming next steps.
source found · returns-policy.pdfMedApp
Adaptive learning workflows for medical admission preparation.
An AI-powered educational platform currently in development, structured around learning plans, adaptive practice, content generation and an editorial administration workflow.
- Structured learning content
- Adaptive practice workflows
- Editorial review pipeline
- Daily learning planning
Product in development
Daily learning planEditorial review
Cell biology foundations
Chemistry problem set
Concept explanation draft
Adaptive practice queue
AI PR Reviewer
Repository-aware review, beyond the diff.
An AI-assisted pull request review tool designed to understand repository context before generating structured review feedback. Built as a practical developer workflow experiment around retrieval, structured outputs and GitHub-oriented usage.
Stack details configurable after repository URL is set.
backend/app/retriever.py
backend/app/llm_review.py
README.md
frontend/src/app
@@ repository context @@
+ retrieve related files before scoring
! validate structured output schema
+ attach severity and rationale
02 / Capabilities
From prototype to a product people can actually use.
AI Product Prototyping
I build rapid full-stack prototypes around user feedback and real workflows.
RAG & Document Intelligence
I build grounded search, ingestion pipelines and contextual AI assistants.
Agent Workflows
I use tool-calling workflows, structured outputs and review loops.
Full-Stack SaaS Delivery
I ship frontend, backend, authentication, billing, databases and deployment.
AI-Assisted Engineering
My workflow uses modern AI development tools for faster implementation, iteration and validation.
03 / Approach
Build. Validate. Improve. Scale only what works.
01
Understand the workflow
I start with the real user problem, not the AI feature.
02
Build the smallest useful product
I ship a working prototype quickly and make it usable.
03
Learn from usage
I look for failures, feedback and operational friction.
04
Harden what proves valuable
I improve security, reliability, observability and scale once value is validated.
04 / Founder
Built by Alexandru-Stefan Cervinschi.
Founder of Hyper Development
AI-Native Full-Stack Builder
I'm a full-stack developer and AI product builder with 5+ years of experience across frontend, backend, databases, integrations and deployment. Today, my focus is on AI-powered products, RAG systems, SaaS platforms and rapid product delivery using modern AI-assisted engineering workflows. Hyper Development ASC SRL is the B2B structure I work through.
Based in RomaniaEurope timezone
Remote EuropeFull-time B2B opportunities
Romanian SRLB2B invoicing through Romanian SRL
LanguagesEnglish · Romanian
05 / Contact
Let's build something useful.
Open to full-time B2B opportunities and selected AI product collaborations across Europe.
This check depends on repository context. Add a fallback path when retrieval returns no matching files.