What I Work With

Skills & Expertise

Nine years of hands-on engineering across backend systems, cloud infrastructure, and modern frontend frameworks — with deep domain expertise in finance, blockchain, and AI.

Server-Side

Backend & APIs

Node.jsNest.jsTypeScriptJavaScriptREST API DesignWebSocketssocket.io
AWS Certified

Cloud & Architecture

AWS Solutions ArchitectEC2ECS / FargateLambdaAPI GatewayRDSS3SQS / SNSDynamoDB
AI-Augmented

AI & Intelligent Tooling

Claude CodeMCPs & SkillsClaude APIOpenAI APIAWS ML Services
Data Layer

Databases & ORMs

PostgreSQLMySQLAuroraRedisSequelize
Client-Side

Frontend Expertise

VueNuxtReactNext.js
Delivery Pipeline

DevOps, Testing & Tools

DockerGitHub ActionsDataDogJestCypressPlaywrightJIRAConfluence
Industry Knowledge

Domain Expertise

Investments (Public & Private)Field ServiceBlockchainBitcoin & LightningLiquid NetworkAI Integrations
Additional Experience

Familiar With

PythonFlaskMongoDBTypeORMPrismaTailwindGitLab RunnerCC++C#Java
NextContact
Victor Piekarski — Solutions Architect & Lead Software EngineerLet's Connect

Want to Build Something Together?

Whether you need a solutions architect, a tech lead or a senior engineer — I'm always open to discussing new challenges.