Available for select engagements

Arthur Chafonov

Chief Technology Officer & Software Developer crafting scalable systems, engineering-driven culture, and products that last.

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Open to opportunities
CTO
01 — About

Builder. Leader. Architect.

I'm Arthur Chafonov, a software developer turned CTO with a deep obsession for building systems that scale — technically and organizationally.

From early-stage startups to enterprise platforms, I've led cross-functional engineering teams, defined technical roadmaps, and shipped products used by millions.

I believe great technology is the intersection of rigorous engineering, sharp product instinct, and a culture where developers do their best work.

When I'm not in architecture review or code review, I'm probably thinking about distributed systems, developer tooling, or how to make onboarding 10× better.

12+
Years of experience
4×
CTO / VP Eng roles
80+
Engineers led
3M+
Users served
02 — Expertise

What I Do Best

01
Technical Leadership
Building and scaling engineering organizations. Defining culture, processes, and engineering excellence from the ground up.
Org Design Hiring OKRs Mentorship
02
System Architecture
Designing distributed, fault-tolerant systems. From microservices to event-driven pipelines, built to last and scale.
Microservices Event Sourcing Cloud Native APIs
03
Product Engineering
Bridging the gap between business strategy and technical delivery. Shipping products fast without accumulating debt.
Roadmap MVP Agile Velocity
04
Full-Stack Development
Hands-on development across the full stack. I stay close to the code — reviewing PRs, pairing, and setting technical standards.
TypeScript Node.js React Python
05
Infrastructure & DevOps
Cloud infrastructure, CI/CD, observability, and platform engineering. Making deployments boring — in the best way.
AWS Kubernetes Terraform DataDog
06
Data & AI Integration
Integrating ML models and AI capabilities into production products. Practical, pragmatic, and measurable outcomes.
LLMs Pipelines Analytics RAG
03 — Tech Stack

Tools of the Trade

TypeScript / JavaScriptExpert
PythonExpert
React / Next.jsExpert
Node.jsExpert
PostgreSQL / RedisAdvanced
GoAdvanced
AWS / GCPAdvanced
Kubernetes / DockerAdvanced
GraphQLAdvanced
Kafka / RabbitMQAdvanced
TerraformProficient
LangChain / OpenAI APIsProficient
04 — Selected Work

Projects & Ventures

2023–2024
Enterprise SaaS Platform Rebuild
Led complete re-architecture of a legacy monolith into a distributed microservices platform serving 500k+ enterprise users. Reduced time-to-deploy from 2 weeks to 4 hours.
Architecture Node.js Kubernetes Leadership
↗
2022–2023
AI-Powered Analytics Engine
Built an LLM-based analytics assistant that lets non-technical stakeholders query complex data in plain English. Reduced analyst workload by 60%.
LLMs Python RAG Product
↗
2020–2022
Fintech Infrastructure Scale-up
Scaled payment processing infrastructure from 10k to 2M transactions/day. Implemented event-sourced ledger with full audit trail and regulatory compliance.
Fintech Event Sourcing AWS Compliance
↗
2018–2020
Developer Platform & Internal Tooling
Designed and shipped an internal developer platform reducing environment setup from 3 days to under 30 minutes. Adopted by 80+ engineers across 6 teams.
Platform Eng DX Docker CI/CD
↗
05 — Contact

Let's Build Something.

Open to CTO advisory roles, fractional leadership, technical co-founder conversations, and select consulting engagements.

↗ LinkedIn ↗ GitHub ↗ Resume PDF ↗ Twitter / X