CV

Valentyn Solomko

Senior Software Engineer / CTO

Links: LinkedIn · GitHub · Portfolio

Summary

Seasoned Senior Software Engineer / Technical Lead with 20+ years of professional experience designing and delivering enterprise-grade software systems and AI-driven software solutions. Expert in Go (3+), Java (5+), Groovy (6+), and Perl (20+), with a strong focus on cloud-native development, scalable microservices, and data-intensive automation.

Currently serving as CTO, directing technical strategy and AI workflow integration across multi-product SaaS development with a 20+ person engineering team. Designing and implementing AI-assisted engineering workflows — from spec-driven development and multi-model review pipelines to autonomous refactoring and context-engineered AI agents — that measurably accelerate delivery and reduce defect rates.

Combines deep technical expertise with hands-on leadership: from architecting scalable APIs and microservices to mentoring teams and driving modernization initiatives. Adept at transforming complex legacy platforms into efficient, cloud-native systems through automation, best practices, and strategic design.

Core Competencies: Go & Java Specialist · AI/ML Integration · AI-Assisted Development · AI-Powered Pair Programming · Cloud-Native Systems · Automation Engineering · Backend Optimization · DevOps Integration · Microservices · CTO / Executive Engineering Leadership · Team Leadership · Technical Mentorship

Skills

Backend Development:

Languages: Go, Java, Groovy, Perl, TypeScript, PL/pgSQL, Bash
Frameworks:
- Go: Gin, Cobra + Viper, uber-zap, GORM, gRPC, protobuf, Colly, Goquery, chromedp, testing + mockery
- Java: Lombok, Spring Boot, Spring Security, Spring Data
- TypeScript / Node: React 19, Deno, Supabase Edge Functions, Vitest, Playwright
- Perl: perlcritic, perltidy
Architectural Patterns: Microservices, Event-Driven Architecture, Domain-Driven Design (DDD), Clean Architecture, SOLID
Concepts: OOP, Concurrency, API Design, Distributed Systems, Automation Pipelines

AI, Intelligent Systems & AI-Assisted Development:

Core Areas: Neural Networks, Deep Learning, Predictive Analytics, Intelligent Automation
Paradigms / Approaches: AI-Assisted Development · AI-Powered Pair Programming · Generative AI for Specification and Design · AI-Augmented Spec-Driven Development · AI-Driven Development (AIDD) · Autonomous Refactoring · Context Engineering · Self-Healing Systems
Tooling & Platforms: OpenAI API, OpenRouter API, Ollama, Claude Code, Cursor, Aider, Langfuse, Promptfoo
Applications: AI-assisted automation, smart data extraction, chatbot intelligence, decision support systems, multi-model review pipelines
Integrations: Embedding AI workflows into backend pipelines and SaaS platforms; multi-provider LLM failover (Anthropic, OpenAI, Google, Ollama, OpenRouter)

Cloud & DevOps Engineering:

Cloud Platforms: Google Cloud Platform (GCP), Google Kubernetes Engine (GKE), OpenShift
Containerization & Orchestration: Docker, Kubernetes
Infrastructure as Code: Terraform, Ansible, Helm
CI/CD: CloudBees CI (Jenkins), CloudBees SDA (ElectricFlow), GitHub Actions, GitLab CI/CD
Artifact Management: JFrog Artifactory, Nexus
Monitoring & Reliability: Prometheus, Grafana, Langfuse (LLM observability), centralized logging (ELK, uber-zap)
Deployment: GitHub Pages, Railway, Fly.io, Vercel, Supabase, Upstash

Data & Storage Systems:

Relational: PostgreSQL / Supabase, MySQL, SQLite, Interbase / Firebird — SQL optimization, RLS policies, multi-tenant schema design
NoSQL / Key-Value: MongoDB, Redis / Upstash, BerkeleyDB, LevelDB
Focus: Schema design, performance tuning, high availability, caching strategies

System Design & Architecture:

Domains: Distributed Systems, High Availability, API Gateways, Event Processing, Fault Tolerance, Load Balancing
Web Infrastructure: Apache, Nginx, Load Balancing, Security Hardening
Operating Systems: Linux (CentOS, Ubuntu), FreeBSD, Windows
Design Patterns: SOLID, Clean Architecture, Domain-Driven Design, UML modeling

Version Control & Tooling:

VCS: Git (GitHub, GitLab, Bitbucket), SVN, CVS
Project Tools: Jira, ClickUp, Confluence, Gradle, Postman, UML, GraphViz, yEd, VSCode, IntelliJ IDEA, Geany
Bot Development: Telegram, Discord, WhatsApp, SMS/Voice (autoresponders, crypto bots, e-commerce)
Web Scraping: Anti-detection, Captcha-solving, Proxy rotation, Distributed processing, Intelligent ETL Pipelines

Leadership & Collaboration:

Roles: CTO, Technical Lead, Architecture Advisor, Mentor
Practices: Agile Scrum, After Action Review, Technical Documentation Standards, AI Workflow Engineering
Impact: Led 20+ person engineering teams; improved developer efficiency through AI-assisted workflows; delivered multi-product SaaS platforms with measurable reliability gains

Employment History

Freelance Software Engineer | Self-employed | Remote | Oct 2024 — Present

Technical Leadership & AI Workflow Integration:

Serve as CTO for AI-driven SaaS product company, directing engineering strategy across multiple products with a 20+ person team
Design and implement AI-assisted engineering workflows: spec-driven development, multi-model PR review pipelines, context-engineered AI agents, autonomous quality gates
Architect multi-product SaaS platforms: React 19 + TypeScript frontends, Deno/Supabase Edge Functions, multi-provider LLM failover with Langfuse observability

Backend Development & Architecture:

Design and implement scalable backend systems using Go, Java, Groovy, and Perl
Develop RESTful APIs and microservices architectures for high-performance applications
Create custom CLI tools and enterprise-grade software solutions
Optimize database performance and design efficient data storage solutions

AI-Assisted Development & AI Integration:

AI coding platforms: Claude Code, Cursor, Aider, Lovable AI, Replit
Multi-provider LLM integration and failover (Anthropic, OpenAI, Google, Ollama, OpenRouter)
LLM observability with Langfuse; model evaluation with Promptfoo
Deployment: GCP, GitHub Pages, Railway, Fly.io, Vercel, Docker, Kubernetes

Telegram Bot Development & Automation:

Design and develop high-performance Telegram bots using JavaScript, Go, and Java
Build autoresponder systems, crypto trading bots, and specialized bots (E-commerce, Crypto/DeFi, Healthcare, Real estate)
Implement security features including encryption, user verification, and anti-spam measures
Deploy bots with Docker containerization on GCP with comprehensive monitoring

Data Extraction & Web Scraping:

Develop advanced web scraping tools with anti-detection and captcha-solving capabilities
Create automated data extraction pipelines with YAML/JSON configurations
Build distributed processing systems for large-scale data collection projects

Senior Plugin Developer | CloudBees Inc. | Remote | 2019 — 2024

Engineered enterprise-grade plugins for CloudBees DevOps platform focusing on Analytics, CI/CD, and Release Orchestration
Spearheaded major system refactoring initiative creating reusable component packages and Chrome extension
Architected and implemented core platform components improving system scalability
Led requirements gathering through direct customer collaboration; conducted technical interviews
Established Agile SCRUM practices improving team delivery efficiency

Technical Environment: Groovy, Java, Perl, Go · Docker, Kubernetes, Helm, Ansible, Terraform · CloudBees CI (Jenkins), CloudBees SDA (ElectricFlow), GitLab CI · JFrog Artifactory, Nexus · Git (GitHub, GitLab, Bitbucket)

Plugin Developer | Electric Cloud Inc. (acquired by CloudBees) | Remote | 2018 — 2019

Led plugin development within the Flow Plugin team for enterprise DevOps automation platform
Engineered and maintained custom plugins extending platform functionality for Fortune 500 clients
Developed comprehensive integration test suites ensuring plugin reliability and performance

Technical Environment: Groovy, Perl · Electric Flow (now CloudBees CD) · Docker, Kubernetes · Agile Development

Team Lead, Kyiv Branch | PortaOne LLC | Kyiv, Ukraine | 2013 — 2018

Led development team building core components for PortaSwitch BSS and Billing platform
Architected and implemented telecommunications solutions for MNO/MVNO/MVNE providers
Established “After Action Review” process improving team performance and project outcomes
Mentored junior developers; facilitated cross-departmental collaboration
Managed integration of VoIP, IoT, and broadband service components

Technical Environment: Perl, Linux, PortaSwitch · MySQL, PostgreSQL · VoIP, SIP, BSS · Git · Agile, After Action Review

System Architect & Development Head | Internet Invest, Ltd | Kyiv, Ukraine | 2010 — 2013

Architected and led complete redesign of enterprise email service platform: mail.ua
Managed backend development department overseeing 20+ engineers
Established comprehensive development lifecycle including design, coding, and testing standards
Created automated testing and deployment pipelines reducing delivery time

Technical Environment: Perl, Shell Scripting · MySQL, PostgreSQL · Linux, Apache · SMTP, POP3, IMAP · SVN, Redmine

CEO/CTO | TVCom, Ltd (Value Added Service Provider) | Kyiv, Ukraine | 2008 — 2010

Led company-wide crisis management and digital transformation initiatives
Executed comprehensive IT department restructuring optimizing operational efficiency
Redesigned SMS/MMS gateway systems; modernized VoIP service architecture; optimized high-traffic WAP/Web platforms

Technical Environment: SMS, MMS, VoIP, WAP · SMPP, MM7, SIP, HTTP · Linux, Asterisk, OpenVZ · MySQL, PostgreSQL

Department Head | Net Style (Value Added Service Provider) | Kyiv, Ukraine | 2007 — 2008

Established structured software development processes and methodologies
Architected and deployed mobile Value Added Service Provider (VASP) platforms
Designed and implemented enterprise telephony solutions using Asterisk IP PBX
Created intelligent IVR services framework for telecommunications

Technical Environment: Perl, Shell Scripting · Asterisk IP PBX, SIP · VASP Platforms, SMS/MMS · Linux, MySQL, PostgreSQL

Senior Developer | Sunny Mobile (Value Added Service Provider) | Kyiv, Ukraine | 2006 — 2007

Architected and implemented SMS/MMS traffic control systems handling millions of messages daily
Developed control systems integrating multiple protocols (SMPP, SMTP, HTTP, MM4)
Created interactive SMS service platform for real-time customer engagement
Designed Device Management System (DMS) for high-load WAP portals

Technical Environment: Perl, Shell Scripting · SMPP, SMTP, HTTP, MM4 · SMS/MMS Gateway · Linux, MySQL, PostgreSQL

Technical Architect & Team Lead | Summit, CJSC | Kyiv, Ukraine | 1997 — 2006

Architected and implemented enterprise-wide distributed systems: workflow management platform, logistics automation system, accounting integration framework
Designed and developed internal document management system serving 500+ users
Led successful migration of mission-critical workflows from Windows to Linux
Maintained 24/7 availability of business-critical systems; reduced operational costs through platform standardization

Technical Environment: Delphi, Perl, Shell Scripting · Linux, Windows · Interbase · Distributed Systems, Workflow Automation · CVS

Education

NPDU

Kyiv, Ukraine

Bachelor’s degree, Physics & Astronomy

Languages

English: Professional working proficiency (B2)
Ukrainian: Native proficiency

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