Senior Engineer

Fifteen years building software

Frontend, backend, databases, architecture, infrastructure. I focus on the parts of systems that need careful attention.

Dan Ionescu

The work

Building features end-to-end. Designing systems. Sometimes reviewing what the team has built.

Full-Stack Development

Frontend to backend to database. Building features end-to-end, not just pieces.

Architecture & Technical Leadership

System design, code review, technical direction.

Infrastructure

Authentication, API integrations, data pipelines.

Performance & Security

Finding and fixing bottlenecks. Security and scalability reviews.

Technologies

Frontend

React, TypeScript, modern CSS

Backend

Node.js, PHP, REST APIs

Databases

MongoDB, PostgreSQL

Infrastructure

AWS, Docker, CI/CD

Testing

Cucumber, Jest, Vitest

Experience

Auth systems, API integrations, data pipelines

Practice

TDD BDD

Process

Agile Scrum

Specialty

Legacy systems and technical debt

Projects

Coming soon.

Get in touch

dan@ergon.ro

București, Romania