Backend Tech Lead · AI Engineer · Open-Source Author
Alexander Valenchits
Python Django / FastAPI developer. I build backends and applied AI products with LLMs. Engineering since 2014; web development since 2021.
About me
Engineering leader who ships AI products
Tech Lead · AI Engineer
Minsk → Worldwide
Python Django / FastAPI developer and backend developer, Minsk, Belarus, remote. Tech Lead and AI Engineer with an engineering career spanning electronics, industrial automation and software since 2014. Since 2021, I have focused on Python and JavaScript web development. At MVLab, I connected Siemens PLCs, Linux servers and Python backends on factory floors. Today I build backend systems and applied AI products.
I run technical interviews and code reviews, and make architecture decisions grounded in domain-driven design. I value autonomy, measurable outcomes and a seat at the table when product decisions are made.
More context is in the work experience timeline, the full tech stack, the open-source projects, and the technical articles.
What drives me
Languages
Career
Work experience
Alusoft
Backend Tech Lead
- Lead backend development of AI-native products: FastAPI/Django services with LLM integration (vLLM, Ollama), production AI agents and MCP integrations.
- Introduced CI/CD with smooth zero-downtime production deploys and unit-test coverage across services.
- Restructured backend services around domain boundaries using domain-driven design.
- Run technical interviews and code reviews; set backend engineering standards for the team.
AlusoftBel
Software Engineer
- Internal web development: Python backends (Django, DRF, Celery) with Vue.js frontends on PostgreSQL / MySQL.
- Built vector search, embeddings and RAG pipelines over production data.
- Daily development with Cursor AI and AI-assisted workflows.
MVLab
Software Engineer
- Sewage pumping station (SPS) control system: Siemens PLC + Linux servers + Python backend.
- Weighing station with license-plate recognition on Siemens S7-1200.
- Machine-vision system detecting knots in boards on a sawmill line.
- Crane-operation optimization on Siemens S7-400.
AST Expert
Automation Engineer
- Industrial automation: PLC-based control systems and process instrumentation for manufacturing facilities.
Belshina
Electronics Engineer
- Electronics engineering at one of the largest tire manufacturers in Eastern Europe: maintenance and development of electronic control systems.
Capabilities
Tech stack
Backend
AI / ML
DevOps & Servers
Frontend
Projects & Open Source
Products, libraries & tools
Production-grade open source and shipped AI products — published on GitHub and PyPI, in the App Store, written about on Medium and dev.to.
EchoLang
Offline AI voice translator for iPhone — on-device Whisper speech recognition and TranslateGemma translation via MLX. 33 languages, no cloud, no accounts, fully private.
fastapi-viewsets
DRF-style ViewSets for FastAPI — auto-generates CRUD endpoints from SQLAlchemy, Tortoise or Peewee models.
django-graph-search
Production-ready semantic vector search for Django — traverses FK/M2M relations, RAG-ready, zero migrations.
llm-cache-router
Semantic caching + multi-provider LLM routing with cost tracking — a lightweight production library.
testcaseer
CLI tool that transforms browser actions into ready-to-use test cases. Stop writing them by hand.
pgadmin-ai-gateway
Secure AI-agent connector for pgAdmin with RBAC roles, audit logging and an MCP-compatible interface for PostgreSQL.
pythonSiemens
Industrial tooling from the factory floor: Python ↔ Siemens PLC communication (OPC UA / S7), data logging and vision pipelines.
Writing
Articles & essays
I write about FastAPI, Django, LLM tooling and the realities of shipping AI products.
fastapi-viewsets vs fastapi-crudrouter: Which CRUD Generator Should You Pick in 2026?
Medium · Aug 2026
Building a Shop Admin Panel CRUD in Minutes with fastapi-viewsets
Medium · Jun 2026
Add Semantic Search + RAG to Any Django App in 5 Minutes (No Migrations)
Medium · Jun 2026
We Shipped an MVP With Vibe-Coding. Here's What Nobody Tells You About the Aftermath
dev.to · Apr 2026
Stop Writing CRUD Boilerplate for FastAPI — Use ViewSets Instead
dev.to · Apr 2026
Contact
Let’s build something exceptional
Open to Tech Lead / AI Engineer roles in product-driven, AI-native teams — and to interesting collaborations in open source.
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