Sebastiao Domingos
Sebastiao Domingos

Lead Software Engineer | Backend & Integrations

Open to offers · Member since 21 Oct 2026
Location
Ukraine
Desired salary
Unspecified
Work preference
Remote Only
Experience level
Lead

About

Professional summary

I am a software engineer with more than 10 years of experience in PHP and JavaScript development, backend applications, API integrations, and production system maintenance.

I specialize in building and maintaining reliable backend solutions, databases, CRM systems, reporting capabilities, and automation workflows. My work includes REST APIs, payment and SMS integrations, and data processing.

I have extensive experience supporting critical VoIP and telecommunications platforms. I troubleshoot production incidents, analyze network traces, configure routing and billing processes, and work with distributed systems based on SIP and Asterisk.

As a lead developer, I create, integrate, and maintain CRM solutions while helping ensure their reliability, security, and operational quality. I value autonomy, rigor, and practical problem-solving.

I use AI development assistants including ChatGPT, Codex, and Cursor to accelerate development while critically reviewing generated code. I also have foundational knowledge of Python and TypeScript and a continued interest in software quality and security.

Skills

24 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Data Stores

Development

Languages & Frameworks

Experience

Career history

VoIP Engineer / Integrations Engineer Telinta Inc.

Supported and maintained critical production platforms, diagnosing and resolving operational incidents for VoIP and telecommunications services.

Integrated APIs and third-party services, provided technical assistance to customers and partners, and automated routing, billing, and telecom service configuration processes.

Lead Developer Improcom Inc.

Created, integrated, and maintained CRM solutions as a lead developer.

Contributed to backend development, system integrations, ongoing maintenance, and reliable operation of CRM-related software solutions.

Education

Learning history

National Technical University of Vinnytsia

Bachelor's, Computer Science

Bachelor's degree in Computer Science.

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