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  • SD Technologies Inc.
  • Tbilisi
  • 11:29 (UTC +04:00)
  • LinkedIn in/roman-zanko

Achievements

Achievement: Pull Sharkx2

Achievements

Achievement: Pull Sharkx2

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roman-barman/README.md

Hi, I'm Raman Zanko! 👋

Senior software engineer with 9+ years of commercial experience building systems in fintech, banking, GIS, and enterprise software. I work in Rust and C#, with a focus on backend services, network programming, and data processing.

Projects

semantic-gateway — Semantic Layer / BI Gateway

Define business metrics and dimensions in YAML and query data through them over HTTP. Built on Apache DataFusion: semantic queries are translated into typed logical plans (no SQL string construction), with a pluggable data source abstraction and structured error handling. Rust DataFusion Actix-web Tokio Parquet

blog-platform — Multi-component blog system

Full-stack system in a single Cargo workspace: REST API (Actix-web), gRPC services (Tonic), WebAssembly frontend (Yew), CLI tooling, shared client library, PostgreSQL. Rust Actix-web Tonic Yew PostgreSQL

bank-statement-parser — SWIFT & ISO 20022 statement tools

Library and CLI tools for real-world banking formats: MT940 (SWIFT) and CAMT.053 (ISO 20022). Parse, convert between formats, and reconcile transactions across files. Rust MT940 CAMT.053 Fintech

quote-streamer — Real-time quote streaming service

Client-server system streaming stock quotes: subscription management over TCP, data delivery over UDP, multithreaded server with concurrent client handling. Rust TCP/UDP Multithreading

image-processing-cli — Plugin-based image processor

CLI with a dynamically loaded plugin architecture: filters compiled as shared libraries (.so/.dll) and loaded at runtime. Rust Dynamic loading CLI

Systems from scratch

Low-level implementations of real-world systems, built to understand how they work under the hood:

  • Redis server — core commands, networking, data persistence
  • DNS server — DNS protocol and query resolution
  • Unix shell — command parsing, process management, built-ins

Commercial Experience

  • 9+ years of backend development (.NET/C#), currently adopting Rust for systems work
  • Domains: fintech, banking, GIS, enterprise software
  • Payment provider integrations, service migrations, architecture design, performance optimization
  • Microservices, Clean Architecture, REST, gRPC, Kubernetes

Reach me

Pinned Loading

  1. semantic-gateway semantic-gateway Public

    Semantic Layer / BI Gateway in Rust — define metrics and dimensions in YAML, query via HTTP, powered by Apache DataFusion

    Rust 1

  2. blog-platform blog-platform Public

    Multi-component blog system in Rust: REST API (Actix-web), gRPC (Tonic), WebAssembly frontend (Yew), CLI tool, and PostgreSQL

    Rust

  3. bank-statement-parser bank-statement-parser Public

    Rust library and CLI tools for SWIFT MT940 and ISO 20022 CAMT.053 bank statements — parse, convert, reconcile

    Rust

  4. quote-streamer quote-streamer Public

    Real-time stock quote streaming in Rust — TCP subscriptions, UDP data stream, multithreaded server

    Rust

  5. codecrafters-redis-rust codecrafters-redis-rust Public

    Redis server built from scratch in Rust — implements core commands, networking, and data persistence

    Rust

  6. image-processing-cli image-processing-cli Public

    Rust image processing CLI with runtime-loaded plugins (.so/.dll)

    Rust