$ cat cv.json | ./render --theme=terminal

Bogdan Davydov

Software Engineer — Backend & Full-Stack (Java)
me@bogdandavydov.dev · bogdandavydov.dev · github: bogdan · linkedin: bogdan-davydov

// summary

Software engineer with five years of experience building and operating backend and full-stack systems, with deep hands-on expertise in enterprise billing and mediation for the telecom sector. Comfortable owning features end-to-end — from requirements and architecture through backend, frontend, CI/CD and production operations. Strong in Java (Spring Boot, Vert.x), distributed data processing, cloud infrastructure and DevOps. Registered sole proprietor building and shipping independent products alongside employment.

// experience

Software Engineer & Consultant @ NEWCON GmbH mar 2025 — present

Sole engineer end-to-end on multiple enterprise projects in the telecom billing domain — two complete solutions delivered, a third shipping now, each owned from requirements and architecture through backend, frontend, deployment and ongoing support.

  • Built a full web portal for uploading and managing telecom tariffs single-handedly — backend, frontend, CI/CD and production rollout (delivered).
  • Re-architected and cloudified a legacy enterprise application, deployed it on the client's infrastructure and provide ongoing production support — improving reliability, scalability and maintainability (delivered).
  • Rewriting an enterprise legacy Java Swing GUI application into a modern web application on Java 26: a configuration-driven framework where forms, menus and most business logic are generated dynamically from YAML config, database-agnostic across Oracle and PostgreSQL (in progress).
  • Removed several thousand lines of redundant business-logic code through systematic refactoring, reducing maintenance complexity and speeding up core processing workflows.
  • Stack: Java 26 / latest LTS, Spring Boot, TypeScript, Docker, Kubernetes, CI/CD.
Full-Stack Developer @ Gentics Software GmbH may 2023 — feb 2025

Full-stack development on a dynamic Content Management System serving production workloads.

  • Built high-performance, scalable backend services primarily with Java (Vert.x).
  • Developed and maintained web portals with PHP/Laravel and React/TypeScript for responsive, user-friendly interfaces.
  • Worked cross-functionally to ship features, optimize performance and resolve complex production issues.
  • Stack: Java, Vert.x, PHP, Laravel, React, TypeScript.
Software Developer / Product Support @ Lifebrain (Covid Labor) GmbH nov 2021 — apr 2023

Internal tooling, reporting and process automation for large-scale laboratory operations.

  • Developed internal tools including an employee onboarding/offboarding portal.
  • Built reporting and document generation (Jasper) for laboratory operations.
  • Supported and delivered projects around the GLIMS lab information management system.
  • Drove digitalization and automation of internal labor processes.
  • Stack: Java, Spring Boot, Python, SQL.

// projects — selected

Java Workflow / Mediation Engine java · mediation · data processing

Custom Java engine for configurable data-processing workflows, inspired by DigitalRoute Mediation Zone. Directly applies telecom mediation concepts — collection, transformation and routing of high-volume records — as a from-scratch, self-designed system.

Self-Hosted Infrastructure & Observability Platform linux · docker · observability · hetzner

Designed and operate a self-hosted server stack (Hetzner) with containerized deployment and full observability/monitoring — end-to-end ownership of provisioning, deployment automation and reliability.

Online Auction Platform saas · full-stack

C2C online auction platform built as an independent SaaS product — full-stack architecture, backend and infrastructure. Approved side business as a registered sole proprietor; product ownership from concept to launch.

Security / Bug Bounty security · bug bounty

Participant in the City of Vienna (Stadt Wien) bug bounty program — 4 of 5 submitted vulnerability reports accepted. Also active on Immunefi and Bugcrowd.

Solana On-Chain Analytics solana · indexing · backtesting

Backend and on-chain data work in the Solana ecosystem: an own indexer, a year of aggregated launch/trade data, analytics and backtests — written up on this site.

// skills

Languages Java · TypeScript/JavaScript · Python · PHP · SQL
Backend Spring Boot · Vert.x · Laravel · REST APIs · high-throughput data processing / mediation
Frontend React · TypeScript
Infra & DevOps Docker · Kubernetes · CI/CD · Linux · cloud migration · self-hosted infrastructure · observability / monitoring
Data PostgreSQL · relational databases · Oracle · reporting (Jasper)
Practices SDLC ownership · system design · automation · production operations

// education

Bachelor, Automation and Computer-Integrated Technologies @ Kyiv National University of Technologies and Design

// interests

writing technical notes · essays — this site
on-chain data solana · market microstructure · backtests