11/07/2024 updated
100 % available
SENIOR FULL-STACK DEVELOPER
Timisoara, Romania
Germany +4
info: Germany, Austria, Switzerland, France, Netherlands
HTMLJavaScriptPHPA/B TestingUser Experience (UX)Amazon Web ServicesAmazon S3Data AnalysisApache HTTP ServerBackbone.JsBootstrap (Software)Cascading Style Sheets (CSS)CodeIgniterLinuxElasticsearch
Generalist, results-driven developer, combining strong technical and people skills with a data-driven mindset, consistently delivering results for over 20 years.
Over the years, I have worked with a variety of technologies, including:
» Front-end: TypeScript, JavaScript, React, Redux, Vue, Vuex, Ant Design, TailwindCSS, Backbone.js, AngularJS, jQuery, Handlebars.js, Bootstrap, HTML, CSS, Sass
» Back-end: NodeJS, NextJS, Express, Electron, PHP, Laravel, Supabase, Firebase, PostgreSQL, MySQL, MongoDB, Elasticsearch, Sphinx, Memcached, Socket.io, SQL, XML, CodeIgniter, Zend Framework, Smarty, Wordpress, Prestashop, OpenCart
» Tooling: AWS (Elastic Beanstalk, RDS, S3, SES, SNS, Cloudwatch, WAF, API Gateway, Lambda, OpenSearch), Docker, Kubernetes, Git, Vite, Jest, Grunt, Bower, Yeoman, Apache, Nginx, InfluxDB, Grafana, Linux
» Other: A/B Testing, Statistics, Data analysis, Project Management, Scrum, Kanban, Prototyping, UX, MVC, REST, Microservices
Over the years, I have worked with a variety of technologies, including:
» Front-end: TypeScript, JavaScript, React, Redux, Vue, Vuex, Ant Design, TailwindCSS, Backbone.js, AngularJS, jQuery, Handlebars.js, Bootstrap, HTML, CSS, Sass
» Back-end: NodeJS, NextJS, Express, Electron, PHP, Laravel, Supabase, Firebase, PostgreSQL, MySQL, MongoDB, Elasticsearch, Sphinx, Memcached, Socket.io, SQL, XML, CodeIgniter, Zend Framework, Smarty, Wordpress, Prestashop, OpenCart
» Tooling: AWS (Elastic Beanstalk, RDS, S3, SES, SNS, Cloudwatch, WAF, API Gateway, Lambda, OpenSearch), Docker, Kubernetes, Git, Vite, Jest, Grunt, Bower, Yeoman, Apache, Nginx, InfluxDB, Grafana, Linux
» Other: A/B Testing, Statistics, Data analysis, Project Management, Scrum, Kanban, Prototyping, UX, MVC, REST, Microservices
Experience
Professional experience10+ years
Freelancer since2004
Languages
GermanBasic knowledgeEnglishFluentRomanianNative speaker
Project history
- Built Movalio, a modern marketing automation tool for e-commerce companies, architecting the entire solution that delivers messages via push notifications, email and SMS to over 1M end users
- Developed a RAD application framework using Supabase and the Ant Design system, leading to the rapid creation of B2B products, including a comprehensive document management system with automated workflows and digital signature capabilities and an adaptable CRM solution tailored for small businesses
- Developed a wide range of applications and integrations with CAS genesisWorld, a German market leader in CRM for SMEs
- Architected and supervised development for a generic Flutter-based mobile shop application (Android, iOS) by collaborating with freelancers and integrating backend services; Achieved over 20k installs in under a year, 3x retention compared to web, and 30% of total orders
- Created Snippet, an educational tool designed to turn reading into knowledge
- Led 2 teams of 15 people in developing the core product, resulting in a major product rebuild with enhanced UX, speed, and laying a robust foundation for future feature development
- Facilitated alignment between marketing initiatives and product teams in line with business goals, contributing to significant company growth: a 176% increase in revenue to $3.5M, an expanded customer base, and a doubled employee count
- Improved data-driven decision-making by developing and implementing a “Metrics Framework” with InfluxDB and Grafana, adding over 170 metrics and substantially improving visibility into application data
- Developed a custom A/B testing system, facilitating the execution of 100+ experiments
- Mentored and trained team members in embracing a data-driven mindset, focusing on using metrics to assess the effects of developed features and conducting A/B tests efficiently
- Contributed significantly to front-end development at Booking.com — the world leader in online hotel reservations, improving user experience by implementing JavaScript on a large scale
- Implemented and executed over 100 A/B tests, leading to notable conversion rate improvements across various website sections
- Collaborated effectively with top-tier professionals and cross-functional teams, becoming a valued “go-to” team member for challenging tasks
- Originated and executed a groundbreaking conversion optimization experiment, resulting in significant growth in a challenging section. This pioneering effort laid the groundwork for subsequent successful experimentation in the area
- Consistently exceeded performance expectations, achieving the highest performance review score for 6 consecutive trimesters