Valery Berengolts

About Me and Professional Approach

For more than 20 years I have been designing and developing business software. I specialize in automating complex business processes and building custom solutions for a company's unique needs.

• High-load projects. What I value most in development is system speed. I specialize in building lightning-fast solutions that withstand heavy loads without losing performance.
• Focus on optimization and finely-crafted SQL. I have vast experience with complex databases. I prefer to design one elegant, precisely-tuned SQL query instead of a dozen simple ones, minimizing the load on the DBMS. Thanks to this approach, my projects run not just fast, but lightning fast.
• Professional PHP development. I work without off-the-shelf CMSs, frameworks or templates, writing optimized and secure native code. This approach completely eliminates the architectural limitations, hidden vulnerabilities and performance issues inherent to ready-made platforms.
• Full development cycle. I can join a project at any stage — from deep business-process analysis and architecture design to launch, server administration, support and further evolution.
• Flexible and transparent collaboration. I understand that a client cannot always produce a complete specification. I practice an iterative approach: we define a priority block of tasks, implement it, test it on my own infrastructure and move on to the next stage.
• Large-scale tasks. I am interested in large, long-term projects in development, business automation and AI adoption. I do not take on small tasks, business-card websites, landing pages or maintenance of someone else's legacy code.

Core Competencies

• Enterprise software architecture. Design and development of CRM and ERP systems, trading platforms, corporate portals, client areas and high-load web projects of any complexity in PHP.
• Database optimization. Writing complex SQL queries, designing database structures, indexing and profiling to achieve maximum performance in relational DBMSs.
• Artificial intelligence integration. Developing and deploying LLM-based solutions inside an existing corporate landscape (CRM, ERP).
• RAG technologies and smart search. Designing intelligent knowledge bases, corporate AI assistants and search systems over internal documentation (contracts, manuals, correspondence).
• Data accuracy. Setting up data vectorization and contextual/semantic search. AI systems find relevant information far more precisely than traditional full-text search, analyze documents and automate routine work.
• DevOps & Infrastructure. Independent deployment and administration of Linux Ubuntu servers. Own server infrastructure for development and testing.

Technology Stack

• Backend & Frontend: PHP (native development), JavaScript, jQuery
• Databases and DBMS: MySQL, MariaDB, vector databases (Vector DB), Oracle
• AI technologies: LLM, RAG (Retrieval-Augmented Generation), semantic search, data vectorization
• Infrastructure: Linux Ubuntu (administration, deployment, server support)
• Legacy expertise: Delphi (accounting software, financial modules)

Work Experience

Education