Experienced developer and tech leader specializing in secure, multi-platform software solutions, team leadership, and bridging business-technical gaps
Aktualisiert am 15.06.2024
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.09.2024
Verfügbar zu: 100%
davon vor Ort: 100%
PHP
Symfony
DDD
PostgreSQL
MySQL
AWS
Docker
Event Sourcing
CQRS
MVC
SOA
Refactoring
REST
SOAP
Testing
PHPUnit
TDD
BDD
Git
CI/CD pipelines
English
Verhandlungssicher
German
Fortgeschritten
Romanian
Muttersprache

Einsatzorte

Einsatzorte

Hamburg (+100km)
Deutschland
möglich

Projekte

Projekte

1 year 3 months
2023-03 - now

Rebuilding, merging and migration of multiple shop systems

Tech Lead PHP PostgreSQL Docker ...
Tech Lead
  • Assembled a diverse team of 6, including front-end and back-end developers, a designer, and a UX specialist, successfully ensuring on-time delivery of product milestones.
  • Led the rebuilding and migration of multiple shop systems into a unified, modern platform, enhancing efficiency and user experience while integrating existing company systems.
  • Engineered the e-commerce platform using Sylius as the foundation, employing technologies such as PHP, PostgreSQL, Docker, and Tailwind.
  • Executed in depth code reviews and technical evaluations, upholding code quality standard
PHP PostgreSQL Docker TailwindCSS Sylius
mi.to.pharm GmbH
Hamburg
5 years 8 months
2018-05 - 2023-12

Design and implement booking system

Architect / Software developer PHP Symfony DDD ...
Architect / Software developer
  • Implementation of a comprehensive booking system, managing aspects like slot availability, occupancy, and subscription, while navigating highly complex business requirements with an adaptive event-driven design.
  • Data synchronization and integration with both physical systems (such as POS systems and on-site hardware) and online platforms using a hexagonal architecture.
  • Developed robust and scalable RESTful APIs, enabling efficient and seamless communication between different software components.
PHP Symfony DDD REST Event-driven architecture Hexagonal architecture Docker AWS
Golf Lounge Resort GmbH
Hamburg
2 years 11 months
2020-12 - 2023-10

Data processing pipeline for Life-Cycle Assessment calculations

Tech Lead / Architect PHP PostgreSQL DDD ...
Tech Lead / Architect
  • Designed and implemented a highly configurable, multi-stage data processing pipeline for calculating carbon footprint and Life-Cycle Assessment (LCA) of products.
  • Crafted and deployed robust REST APIs for seamless integration with LCA front-ends, ensuring reliable and scalable system interoperability.
  • Developed a comprehensive data aggregation system to efficiently collect and manage offset purchases from third-party shop systems.
  • Employed Domain-Driven Design for clear modeling, an event-driven architecture for responsive data processing, and CQRS utilizing a blend of technologies including PHP, PostgreSQL (both as ODBMS and RDBMS), and Docker.
PHP PostgreSQL DDD CQRS REST Event-driven
Yook GmbH
Hamburg
2 years 7 months
2020-05 - 2022-11

Industry-specific B2B portal

Tech Lead / Architect PHP Symfony DDD ...
Tech Lead / Architect
  • Engineered an industry-specific solution with cross-functional collaboration for real estate industry, with complex workflows involving multiple vendors, partners, and clients.
  • Developed a highly configurable and customizable PDF document generator.
  • Conducted comprehensive code reviews and technical analyses, ensuring code quality, system reliability, and alignment with best practices in software development while mentoring and coaching a team of developers.
  • Established a strong architectural foundation with a domain driven design approach, CQRS and asynchronous processing on top of PHP, PostgreSQL, RabbitMQ, AWS and Docker.

PHP Symfony DDD PostgreSQL RabbitMQ Docker CQRS AWS Event-Driven architecture
Maklaro GmbH
Hamburg
10 months
2021-10 - 2022-07

Microservice development

Software Engineer PHP Microservice ECS ...
Software Engineer

  • Engineered a robust webhook dispatching microservice capable of handling high-volume traffic, with 100% delivery guarantee, designed to integrate seamlessly with existing systems.
  • Built the microservice using PHP with a focus on scalability and reliability, leveraging AWS technologies including ECS, RDS, Lambda, SQS, Cloudwatch, and VPC.
PHP Microservice ECS Amazon RDS SQS Cloudwatch VPC AWS Lambda
Hamburg
2 years 9 months
2018-05 - 2021-01

Architecture system for managing and ticketing sport events

Tech Lead / Architect PHP PostgreSQL Elastic Search ...
Tech Lead / Architect
  • Led the architectural design and developed a scalable and user-centric system for managing and registering for sports events, as well as facilitating ticket purchases for fitness studios.
  • Engineered complex payment flows to streamline secure transactions among buyers, vendors, and partners leveraging an Event-Driven architecture.
  • Played a key role in team development by coaching members, contributing to the recruitment process, building a cohesive and skilled team.
  • Introduced a diverse technology stack comprising PHP, PostgreSQL, Elasticsearch, and AWS (EC2, SNS, S3, Elastic Beanstalk, SQS).
AWS
PHP PostgreSQL Elastic Search Payment flow Event driven
Fitfox/SportScheck
Hamburg
7 years
2011-05 - 2018-04

Backend development and REST API development for IoT devices

Senior developer PHP REST Internet of Things ...
Senior developer

  • Developed a multi-platform back-end enabling seamless implementation of location features like Geofence, iBeacon, NFC, Eddystone, and QR-code into mobile apps and web platforms.
  • REST API development for IoT devices creating interfaces that enhance connectivity and functionality of IoT ecosystems leveraging DDD and event sourcing patterns.
  • Senior developer for an ERP system tailored for Print Management facilitating B2B processes in an enterprise-level application, utilizing a diverse technology stack including PHP, MySQL, PostgreSQL, and message-brokering with SOA and MVC architecture.
PHP REST Internet of Things DDD Event sourcing MySQL PostgreSQL SOA MVC iBeacon Enterprise-Resource-Planning
Speicher 210 GmbH / wingu AG
Hamburg
4 years 4 months
2007-02 - 2011-05

Backend development mainly in PHP / MySQL

Web developer PHP / MySQL
Web developer
  • Backend development mainly in PHP / MySQL
  • C# applications (ex. for offline editing with synchronization capabilities)
  • Synchronization pipeline to / from various applications, databases, vendors
PHP / MySQL
Bikie GmbH
Hamburg
4 years 3 months
2007-02 - 2011-04

Marketplace website

Software developer PHP MySQL MVC ...
Software developer
  • Build a marketplace website using PHP and MySQL with an MVC architecture.
  • Developed C# applications designed for offline editing with advanced synchronization.
  • Build a synchronization pipeline, facilitating seamless data exchange between various external databases and vendors.
PHP MySQL MVC C#
Bikie GmbH
Hamburg
1 year 7 months
2005-08 - 2007-02

Developing the main company?s internal software, built on the Oracle platform

Developer PL/SQL Oracle Forms PHP/ASP.NET
Developer
  • Development and maintenance of the company's primary internal software web-based tools using PL/SQL, Oracle Forms, PHP, ASP.NET catering to diverse operational needs on Oracle and MySQL databases.
PL/SQL Oracle Forms PHP/ASP.NET
Romtelecom, Brasov
11 months
2004-10 - 2005-08

Development of the new version of the internal application

Web developer PHP MySQL JavaScript
Web developer
  • Full-Stack Development using PHP, MySQL, and JavaScript.
  • Thorough beta testing ensuring the highest level of quality and reliability in the final product.
PHP MySQL JavaScript
IT Wizards, Brasov

Aus- und Weiterbildung

Aus- und Weiterbildung

4 years 9 months
2002-10 - 2007-06

Electrical Engineer

Engineer Degree, Transilvania University Brasov (TUB), Brasov
Engineer Degree
Transilvania University Brasov (TUB), Brasov
3 years 11 months
1998-09 - 2002-07

Highschool

Scientific Baccalaureate, Dr. Ioan Mesota, Brasov
Scientific Baccalaureate
Dr. Ioan Mesota, Brasov

Kompetenzen

Kompetenzen

Top-Skills

PHP Symfony DDD PostgreSQL MySQL AWS Docker Event Sourcing CQRS MVC SOA Refactoring REST SOAP Testing PHPUnit TDD BDD Git CI/CD pipelines

Produkte / Standards / Erfahrungen / Methoden

Agile
Experte
Teamwork
Experte
Flexibility
Experte
Planning
Experte
Leadership
Experte
Problem-solving
Experte
Communication
Experte

Programmiersprachen

PHP
Experte
TypeScript
Fortgeschritten
JavaScript
Basics
Python
Basics
Rust
Basics
ARCHITECTURE:
DDD, Event Sourcing, Event-Driven, Hexagonal, CQRS, SOA, MVC, Microservices

PHP:
Symfony, Laminas, Laravel, Amp

TESTING & CODE QUALITY:
PHPUnit, Behat, TDD, BDD Static analysis CI/CD pipelines

QUEUING:
AMQP, RabbitMQ, SQS

FRONT-END:
JavaScript, TypeScript, Angular, ReactJS, Tailwind

TOOLING:
Git, Docker, Vagrant

DOCUMENTATION:
Functional requirements, Architecture documents

Datenbanken

PostgreSQL
Fortgeschritten
MariaDB
Fortgeschritten
MySQL
Fortgeschritten
MongoDb
Fortgeschritten
ElasticSearch
Basics

Einsatzorte

Einsatzorte

Hamburg (+100km)
Deutschland
möglich

Projekte

Projekte

1 year 3 months
2023-03 - now

Rebuilding, merging and migration of multiple shop systems

Tech Lead PHP PostgreSQL Docker ...
Tech Lead
  • Assembled a diverse team of 6, including front-end and back-end developers, a designer, and a UX specialist, successfully ensuring on-time delivery of product milestones.
  • Led the rebuilding and migration of multiple shop systems into a unified, modern platform, enhancing efficiency and user experience while integrating existing company systems.
  • Engineered the e-commerce platform using Sylius as the foundation, employing technologies such as PHP, PostgreSQL, Docker, and Tailwind.
  • Executed in depth code reviews and technical evaluations, upholding code quality standard
PHP PostgreSQL Docker TailwindCSS Sylius
mi.to.pharm GmbH
Hamburg
5 years 8 months
2018-05 - 2023-12

Design and implement booking system

Architect / Software developer PHP Symfony DDD ...
Architect / Software developer
  • Implementation of a comprehensive booking system, managing aspects like slot availability, occupancy, and subscription, while navigating highly complex business requirements with an adaptive event-driven design.
  • Data synchronization and integration with both physical systems (such as POS systems and on-site hardware) and online platforms using a hexagonal architecture.
  • Developed robust and scalable RESTful APIs, enabling efficient and seamless communication between different software components.
PHP Symfony DDD REST Event-driven architecture Hexagonal architecture Docker AWS
Golf Lounge Resort GmbH
Hamburg
2 years 11 months
2020-12 - 2023-10

Data processing pipeline for Life-Cycle Assessment calculations

Tech Lead / Architect PHP PostgreSQL DDD ...
Tech Lead / Architect
  • Designed and implemented a highly configurable, multi-stage data processing pipeline for calculating carbon footprint and Life-Cycle Assessment (LCA) of products.
  • Crafted and deployed robust REST APIs for seamless integration with LCA front-ends, ensuring reliable and scalable system interoperability.
  • Developed a comprehensive data aggregation system to efficiently collect and manage offset purchases from third-party shop systems.
  • Employed Domain-Driven Design for clear modeling, an event-driven architecture for responsive data processing, and CQRS utilizing a blend of technologies including PHP, PostgreSQL (both as ODBMS and RDBMS), and Docker.
PHP PostgreSQL DDD CQRS REST Event-driven
Yook GmbH
Hamburg
2 years 7 months
2020-05 - 2022-11

Industry-specific B2B portal

Tech Lead / Architect PHP Symfony DDD ...
Tech Lead / Architect
  • Engineered an industry-specific solution with cross-functional collaboration for real estate industry, with complex workflows involving multiple vendors, partners, and clients.
  • Developed a highly configurable and customizable PDF document generator.
  • Conducted comprehensive code reviews and technical analyses, ensuring code quality, system reliability, and alignment with best practices in software development while mentoring and coaching a team of developers.
  • Established a strong architectural foundation with a domain driven design approach, CQRS and asynchronous processing on top of PHP, PostgreSQL, RabbitMQ, AWS and Docker.

PHP Symfony DDD PostgreSQL RabbitMQ Docker CQRS AWS Event-Driven architecture
Maklaro GmbH
Hamburg
10 months
2021-10 - 2022-07

Microservice development

Software Engineer PHP Microservice ECS ...
Software Engineer

  • Engineered a robust webhook dispatching microservice capable of handling high-volume traffic, with 100% delivery guarantee, designed to integrate seamlessly with existing systems.
  • Built the microservice using PHP with a focus on scalability and reliability, leveraging AWS technologies including ECS, RDS, Lambda, SQS, Cloudwatch, and VPC.
PHP Microservice ECS Amazon RDS SQS Cloudwatch VPC AWS Lambda
Hamburg
2 years 9 months
2018-05 - 2021-01

Architecture system for managing and ticketing sport events

Tech Lead / Architect PHP PostgreSQL Elastic Search ...
Tech Lead / Architect
  • Led the architectural design and developed a scalable and user-centric system for managing and registering for sports events, as well as facilitating ticket purchases for fitness studios.
  • Engineered complex payment flows to streamline secure transactions among buyers, vendors, and partners leveraging an Event-Driven architecture.
  • Played a key role in team development by coaching members, contributing to the recruitment process, building a cohesive and skilled team.
  • Introduced a diverse technology stack comprising PHP, PostgreSQL, Elasticsearch, and AWS (EC2, SNS, S3, Elastic Beanstalk, SQS).
AWS
PHP PostgreSQL Elastic Search Payment flow Event driven
Fitfox/SportScheck
Hamburg
7 years
2011-05 - 2018-04

Backend development and REST API development for IoT devices

Senior developer PHP REST Internet of Things ...
Senior developer

  • Developed a multi-platform back-end enabling seamless implementation of location features like Geofence, iBeacon, NFC, Eddystone, and QR-code into mobile apps and web platforms.
  • REST API development for IoT devices creating interfaces that enhance connectivity and functionality of IoT ecosystems leveraging DDD and event sourcing patterns.
  • Senior developer for an ERP system tailored for Print Management facilitating B2B processes in an enterprise-level application, utilizing a diverse technology stack including PHP, MySQL, PostgreSQL, and message-brokering with SOA and MVC architecture.
PHP REST Internet of Things DDD Event sourcing MySQL PostgreSQL SOA MVC iBeacon Enterprise-Resource-Planning
Speicher 210 GmbH / wingu AG
Hamburg
4 years 4 months
2007-02 - 2011-05

Backend development mainly in PHP / MySQL

Web developer PHP / MySQL
Web developer
  • Backend development mainly in PHP / MySQL
  • C# applications (ex. for offline editing with synchronization capabilities)
  • Synchronization pipeline to / from various applications, databases, vendors
PHP / MySQL
Bikie GmbH
Hamburg
4 years 3 months
2007-02 - 2011-04

Marketplace website

Software developer PHP MySQL MVC ...
Software developer
  • Build a marketplace website using PHP and MySQL with an MVC architecture.
  • Developed C# applications designed for offline editing with advanced synchronization.
  • Build a synchronization pipeline, facilitating seamless data exchange between various external databases and vendors.
PHP MySQL MVC C#
Bikie GmbH
Hamburg
1 year 7 months
2005-08 - 2007-02

Developing the main company?s internal software, built on the Oracle platform

Developer PL/SQL Oracle Forms PHP/ASP.NET
Developer
  • Development and maintenance of the company's primary internal software web-based tools using PL/SQL, Oracle Forms, PHP, ASP.NET catering to diverse operational needs on Oracle and MySQL databases.
PL/SQL Oracle Forms PHP/ASP.NET
Romtelecom, Brasov
11 months
2004-10 - 2005-08

Development of the new version of the internal application

Web developer PHP MySQL JavaScript
Web developer
  • Full-Stack Development using PHP, MySQL, and JavaScript.
  • Thorough beta testing ensuring the highest level of quality and reliability in the final product.
PHP MySQL JavaScript
IT Wizards, Brasov

Aus- und Weiterbildung

Aus- und Weiterbildung

4 years 9 months
2002-10 - 2007-06

Electrical Engineer

Engineer Degree, Transilvania University Brasov (TUB), Brasov
Engineer Degree
Transilvania University Brasov (TUB), Brasov
3 years 11 months
1998-09 - 2002-07

Highschool

Scientific Baccalaureate, Dr. Ioan Mesota, Brasov
Scientific Baccalaureate
Dr. Ioan Mesota, Brasov

Kompetenzen

Kompetenzen

Top-Skills

PHP Symfony DDD PostgreSQL MySQL AWS Docker Event Sourcing CQRS MVC SOA Refactoring REST SOAP Testing PHPUnit TDD BDD Git CI/CD pipelines

Produkte / Standards / Erfahrungen / Methoden

Agile
Experte
Teamwork
Experte
Flexibility
Experte
Planning
Experte
Leadership
Experte
Problem-solving
Experte
Communication
Experte

Programmiersprachen

PHP
Experte
TypeScript
Fortgeschritten
JavaScript
Basics
Python
Basics
Rust
Basics
ARCHITECTURE:
DDD, Event Sourcing, Event-Driven, Hexagonal, CQRS, SOA, MVC, Microservices

PHP:
Symfony, Laminas, Laravel, Amp

TESTING & CODE QUALITY:
PHPUnit, Behat, TDD, BDD Static analysis CI/CD pipelines

QUEUING:
AMQP, RabbitMQ, SQS

FRONT-END:
JavaScript, TypeScript, Angular, ReactJS, Tailwind

TOOLING:
Git, Docker, Vagrant

DOCUMENTATION:
Functional requirements, Architecture documents

Datenbanken

PostgreSQL
Fortgeschritten
MariaDB
Fortgeschritten
MySQL
Fortgeschritten
MongoDb
Fortgeschritten
ElasticSearch
Basics

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