Adam Parusel

Senior Backend Developer

Bielefeld, Germany
Experience
Mar 2021 - Present
4 years 5 months
Cologne, Germany

Senior Backend Developer

RTL+ / TVNOW

  • As a Senior Backend Developer in the Meta team, I was responsible for operating and developing the "Stable" backbone, which holds all the data for RTL+ (formerly TVNOW) and is the core of the application.
  • RTL+ is the largest Europe-based streaming provider with millions of customers who access movies, series, and documentaries daily via web, TV, or app.
  • Alongside high availability and scalability under peak loads, low response times are absolutely central to serve users in the best possible way. User satisfaction is the company’s key metric.
  • Accordingly, the focus was on guaranteeing the best user experience. To ensure this, we emphasized system architecture, optimized code, high test coverage, optimized database queries, and the use of smart multilayer caching strategies.
  • Scrum was used within the SAFe framework for agile development of new features and organized in Jira.
  • Technologies used
  • Dev Stack: PHP, Laravel, Symfony
  • Server: Linux, Apache, nginx
  • Database: MySQL
  • Caching: Redis, Varnish, Memcached
  • Cloud: AWS
  • Keywords: PHP, Laravel, Symfony, MySQL, Caching, Redis, Varnish, Memcached, API, REST, Git, Jira, Docker, Scrum
Sep 2019 - Feb 2021
1 year 6 months
Hamburg, Germany

Senior Backend Developer

About You

  • As a Senior Developer, I was part of the Checkout team responsible for the critical order and payment process of the e-commerce platform.
  • About You is one of the largest e-commerce providers in Europe. Besides its own shops, it offers a PaaS solution called About You Cloud with international clients like Marco Polo and Depot. Millions of users use the infrastructure daily and perform transactions worth millions.
  • Ensuring uninterrupted operation, high availability, scalability, and low response times was always top priority. The focus was on optimal system architecture, high test coverage, smart caching strategies, and process optimization.
  • Scrum was used for agile development of new features and organized in Jira.
  • Technologies used
  • Dev Stack: PHP, Laravel
  • Server: Linux, Apache, nginx
  • Database: MySQL
  • Caching: Redis, Memcached
  • Cloud: AWS
  • Payment: Klarna, PayPal, other EU country-specific providers
  • Shipping: DHL, Hermes, other EU country-specific providers
  • Keywords: PHP, Laravel, MySQL, Caching, Redis, Memcache, API, REST, Git, Jira, Docker, Scrum
Oct 2016 - Aug 2019
2 years 11 months
Bielefeld, Germany

Technical Lead and Developer

1sales

  • As part of an eight-person development team, I led and implemented the software architecture and development of a CRM SaaS solution.
  • In an agile Scrum process, we took the product from idea to launch within a few months and then convinced several hundred customers.
  • The challenges for the cloud-based solution involved covering all aspects:
  • Highly available, scalable system architecture
  • Cloud hosting
  • Resource and response optimization through smart multilayer caching strategies
  • Integration of payment services and internal processes
  • Technologies used
  • Dev Stack: PHP, Laravel, Node.js, Vue.js, Angular
  • Server: Linux, Apache, nginx
  • Database: MySQL, MongoDB
  • Caching: Redis, Varnish, Memcached
  • Cloud: AWS, Digital Ocean
  • Payment: Stripe
  • Keywords: PHP, Laravel, MySQL, Node.js, MongoDB, Caching, API, REST, Redis, Memcache, Varnish, Git, Jira, Docker, Scrum
Apr 2011 - Sep 2019
8 years 6 months
Bielefeld, Germany

Technical Lead and Developer

Adsolvix

  • Developed a customer and lead management software (CRM) for insurance brokers, an internal system to manage customers, leads, orders, and complaints.
  • Technologies used
  • Dev Stack: PHP, Laravel, Zend, CodeIgniter
  • Server: Linux, Apache, nginx
  • Database: MySQL, MongoDB
  • Caching: Redis, Varnish, Memcached
  • Cloud: AWS, Digital Ocean
  • Keywords: PHP, Laravel, CodeIgniter, MySQL, Caching, API, REST, Redis, Memcache, Varnish, Git, Jira, Docker, Scrum
Jan 2003 - Dec 2011
9 years
Germany

Web Development, Online Marketing

Freelancing / Various

  • Various projects for clients and on my own in areas such as:
  • Finance, trading, and brokerage
  • Medical devices
  • Consumer goods
  • Developed various web applications, built websites and landing pages, and marketed them via Google Ads/AdWords and email marketing.
  • Managed ad spend budgets: €500k per year.
  • Keywords: PHP, Laravel, CodeIgniter, WordPress, MySQL, API, REST, nginx, Apache
Summary

With extensive experience as a backend developer, I bring broad knowledge in implementing and operating highly available and scalable applications. Recently, I was able to apply my expertise at international companies like RTL+ and About You, where I worked for several years.

My skills go far beyond technical know-how. With a holistic view, I always keep the entire business context in mind. Thanks to my entrepreneurial mindset, I also consider economic interests to balance technical requirements and business success.

Languages
German
Native
Education
Oct 2001 - Jun 2007

University of Paderborn

Computer Science, minor in Economics · Germany

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