Upwork home
Sign up
Secondary
Marek P.
Redondo Beach, CA
100% Job Success
Top Rated

Expert Full Stack and Mobile Developer

Full-stack developer with +22 years of experience, helping US clients full-time since 2005. Refactoring & code simplicity master. Mentor on Codementor. Sun Certified Java Developer, Sun Certified Web Component Developer, Zend Certified Engineer PHP5 Expertise: vanilla javascript, React.js, Vue.js, React Native, Ruby, Ruby on Rails, Python, Flask, Django, Odoo, C++ (generics, metaprogramming), C, Java, PHP, Scala, Obj-C, Core Data, TDD. Can rapidly prototype ideas and maintain complex legacy apps. Completed more than 100 projects since 2005. Featured in Washington Post in March 2013 Client Recommendations (LinkedIn & Upwork): "Marek has been our primary programmer for over 10 years. His work is superb. He has an amazing combination of skills and qualities that make him highly successful and effective. He is very smart and reads extensively to continue developing his skills. He is a hard worker and is willing to work long hours if needed to make deadlines. He is an excellent, organized communicator and is available every day, regardless of time zones. He is a renaissance coder, meaning he has a huge breadth of knowledge in many many languages and platforms. He has a keen business sense and will approach all coding with a great understanding of flexibility and scalability for future business needs. Most of all, Marek's code is clean and well-structured. This is critical if you expect your software to last through future revisions and iterations. He does not take shortcuts. He develops a solid foundation, adheres strictly to MVC structure, and produces code that is clean, professional, reliable, and extensible." "Marek and I worked together on a very large PostgreSQL-based database application. At first, I had the ideas and Marek had all of the execution. But as we worked more together, Marek was increasingly coming up with new ideas to do things better and faster than I had considered" "It's a pleasure to work with Marek. He has top programing skills and will deliver top quality job. He is very professional and customer oriented. He understand quickly and precisely the needs and will advise you or make propositions if necessary. He know the importance of deadlines and be on time and on budget. He is always available and can work under tight deadline if necessary. I strongly recommend him." "Mark is #1 on my list of coders. He is a tenacious in his ability to get things done and his solutions are excellent. He is also excellent at trouble shooting problems and super responsive. He communicates effectively and keeps me well informed. My only regret is not having enough work to employ him full time" "Marek worked with us in late 2009 to completely rewrite our website using a new platform (Ruby on Rails) according to specific requirements. He did a fantastic job of pulling everything together, was communicative throughout the entire contract, and was very willing to work with us after the job completion to ensure that we were entirely satisfied with his work. It was a pleasure working with him and I would eagerly do so again in the future." "I met Marek in my home town, Mountain View, California a few years back when he was visiting the US. Over the years, we have also developed a very cordial and fruitful professional relation. He is not only a highly competent software developer with vast expertise covering many areas of software technologies, but also a pleasure to do business with. His technical competence is beyond doubt, and his pleasant personality, intelligence, prompt responses and attention to his clients, and high quality work are what make working and doing business with him always an enjoyable experience. My startup's user facing Web project has won quite a few praises so far from many parties. Marek's contribution and participation in said project are definitely important. I enjoy knowing him both as a person and as a honorable fellow professional, and will recommend him to anyone seeking his consulting services without reservations" "Marek built major pieces of our enterprise transportation product. He's smart, motivated, deeply knowledgeable across the entire web stack, and a consummate professional about his work. Great decision-making skills with a strong sense of practical tradeoffs. Highly recommended as a developer, project lead, or entrepreneur." "Marek did great work for us on BetterPPC - he delivers on time and on budget."
Work history
Marek P. has more jobs. Create an account to review them
Skills

Skills

  • Perl
  • API
  • WordPress
  • Objective-C
  • Ruby on Rails
  • MySQL Programming
  • Web Application

Browse similar freelancers

Browse and buy related projects

Web Programming & Development Services Online