Skip to content
BackNov 7
Marek M.
Upwork badge

Marek M.

Database Software Architect (Java, SQL, ETL)

IT specialist experienced in software analysis and implementation of performance improvements, advanced database application development, implementation of information & reporting systems. Developer of backend services, desktop and web applications, experienced in mainly Linux but also Windows server environments. Worked since 2004 for 7 years as Senior Technical Consultant for Infor and participated in many international projects mainly focusing on relational data transformation to OLAP systems. Since 2012 a Bottleneck Team Lead in an international team responsible for software analysis and implementation of performance improvements on various platforms (mostly C/C++, Java & DBs). Since 2013 a member of a team that develops Amazon Elastic Compute Cloud (EC2) management web service used by a company with 5000+ employers, Amazon WebServices (Java API) expert. Since 2015 at Elance which later became part of Upwork. Member of team responsible for time tracking and reporting backend services. Designed and implemented ETL services mainly in Java (dropwizard) with Vaadin UI. Designed relational db structure for reporting and also time tracking. From 2018 leading the team. I like well sized scrum teams that can focus on work effectively. I enjoy and like to utilize the potential of my teammates. And the same I do with resources I use (database can usually work much better than one expects if used correctly). Favorite db: Postgres Favorite programing language: Any that can work well with databases Favorite OS: Linux

🇨🇿Loveckovice, Czech Republic$75/hr100% JSS5.00 (57)Since Aug 2011

Earnings and projects

MRR
$9k

Last 6 months ÷ 6

World#1,635 / 412k
🇨🇿Country#3 / 669
Revenue, last 30 days
$8.4k

Last 6 months: $54k

World#2,143 / 412k
🇨🇿Country#5 / 669
Total earnings
$1.15M

Billed in all: $1.26M

World#403 / 412k
🇨🇿Country#2 / 669
Per project
$20k

$27k in the last 6 months

World#6,043 / 412k
🇨🇿Country#14 / 669
Projects, last 6 months
2
0% fixed100% hourly
World#88,918 / 412k
🇨🇿Country#132 / 669
Projects in all
58

Across 76 contracts

20% fixed80% hourly
World#52,574 / 412k
🇨🇿Country#97 / 669

Earnings, last 30 days

$1.26M+$8.4k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1.245M$1.250M$1.255M$1.260MOct 8Oct 23Nov 7

Skill rankings: #1 in 1 skill of 10

Rarest: top 0.55% in Visual Basic for Applications, of 1,453. Ranked by MRR among everyone on Upwork with the skill.

  1. 1Online Analytical Processing25 freelancers · 🇨🇿 #1Top 4%
  2. #8Visual Basic for Applications1,453 freelancers · 🇨🇿 #1Top 0.55%
  3. #14Performance Optimization1,100 freelancers · 🇨🇿 #1Top 1%
  4. #19Linux3,038 freelancers · 🇨🇿 #1Top 0.63%
  5. #19C1,974 freelancers · 🇨🇿 #1Top 0.96%
  6. #25Linux System Administration2,578 freelancers · 🇨🇿 #1Top 0.97%
  7. #30ETL Pipeline1,396 freelancers · 🇨🇿 #1Top 2%
  8. #47C++4,442 freelancers · 🇨🇿 #1Top 1%