Hello, I'm
Crina Seiche
Senior Software Engineer
I turn business requirements into web applications, backed by 15+ years of software development experience.
Services
Web Development Services
From business websites to custom web applications, I build practical solutions tailored to your needs.
Website Development
I build modern, responsive websites for businesses that want a professional online presence and prefer to outsource the process.
Custom Web Development
I develop custom features and web applications tailored to your business needs, from booking systems and smart forms to integrations with other services.
Maintenance & Modernization
I improve existing websites and web applications through bug fixes, new features, and updates, keeping them reliable, useful, and aligned with evolving business needs.
Experience
My Professional Journey
With 15+ years in web development, I've worked on a wide range of projects, focusing on backend development, integrations, and improving existing applications. My experience also includes coordinating development teams and working closely with clients to understand their needs.
Web Developer
DotWhite
June 2025 โ Present
Maintained and updated an existing healthcare web application, focusing primarily on backend functionality and invoicing workflows using PHP 8.x, Laravel, and Lumen. Worked on API integrations, S3 file handling, and API documentation. Also maintained a legacy monolithic application built with PHP 5.3, using AI-assisted development tools to support implementation and problem-solving.
Web Developer
P4B
November 2020 โ June 2025
Developed and maintained PHP microservices and refactored monolithic applications to improve code structure and maintainability. Worked on API documentation using Swagger/OpenAPI and contributed to backend unit testing.
Web Developer
Crystal Code
May 2020 โ November 2020
Maintained Symfony applications, troubleshooting performance bottlenecks and improving application stability. Worked with Jenkins-based CI workflows in an Ubuntu environment.
Web Developer
Lateral Inc.
October 2015 โ May 2020
Developed and maintained web applications for international clients in the healthcare, finance, and travel sectors. Worked on existing codebases, resolved production issues, and refactored applications to improve stability and maintainability.
Developer & Technical Team Lead / Scrum Master
Russmedia Tech
May 2012 โ October 2015
Led a team of five developers working on high-traffic job portals built with Symfony. Balanced hands-on development with team leadership and Scrum responsibilities. Contributed to database query optimization to improve job search performance and worked with the team on integrating Solr and Actonomy to enhance search relevance and job matching.
Web Developer
Aelius
August 2011 โ May 2012
Developed a custom time-management application using Symfony, working on both frontend and backend development.
Education
Master's Degree, IT Management
University of Oradea, 2011 โ 2013
Bachelor's Degree, Economics and Business Informatics
Babeศ-Bolyai University, Cluj-Napoca, 2008 โ 2011
Certifications & Languages
Certified Scrum Master
Scrum Alliance
Certificate in Advanced English
Cambridge Assessment English
Languages: Romanian (native), English (professional proficiency)
Contact
Let's talk about your project.
Have an idea you want to bring to life, need a new website, or want to improve an existing application? Get in touch, and let's explore how I can help.