Jöran Tesse

Professional Experience

08/2019—01/2020International Relocation
  • previous employment ended at own request to relocate internationally
  • green card approved 02/2020
06/2016—08/2019Senior Software Engineer at iteratec GmbH
  • enterprise architecture (strategy) consulting in mature, large-scale micro-service environment with cross-functional teams and agile organization at e-commerce platform (revenue $15.2b); developed and implemented self-describing architecture, significantly reducing the overhead required to maintain an up-to-date enterprise architecture overview, saving more than $280,000 per year in personnel cost (apache mesosphere/marathon)
  • full and long-term web-performance analysis at aforementioned customer, using OpenSpeedMonitor (open source / github) and chrome user experience reports to measure user experience impact of performance, compare it to important competitors like amazon, and to find specific opportunities of improvement
  • product owner for innovation project leading cross-functional team in implementing autonomous navigation with Segway's Loomo robot using ROS; with working prototype after 6 weeks
  • workshops (automotive industry) and guest lectures (university) on agile architecture mgmt. and self-describing architectures
  • developed concept and implemented software for a security workshop with hands-on hacking / pen-testing; held workshop multiple times for trainings (internal) and marketing events at conferences and universities, leading to market visibility in security management and the hiring of several workshop participants
  • software engineering for secure-code-box, an open source project on github orchestrating several security penetration test suites
  • software engineering in agile software development projects
  • leading internal "architecture community", organizing multi-office meetups and the development/implementation of training opportunities for young professionals in software engineering
06/2015—05/2016Junior IT Strategist at Hamburg Port Authority
  • reviewed 23 IoT-related innovation projects, creating a uniform architectural description spanning from sensors to business services
  • results published in M.Sc. thesis and two peer-reviewed publications
04/2015—12/2018IT Administrator at Vet Clinic Kotzian
  • performance optimizations, reducing time between input and reaction from >1.5s to consistently below 0.1s, affecting all internal IT
09/2014—01/2015Intern at DAKOSY GmbH
  • requirements engineering for e-learning for customs software
  • prototypical implementation, identifying business opportunities conservatively estimated to be worth >$50,000 p.a.
03/2014—04/2014Intern at iteratec GmbH
  • concept for software test automation at $15b revenue online retailer
10/2007—06/2014Freelance Web Developer
  • various projects using php, mysql, javascript and css
  • website performance analysis, server and DNS administration
03/2007—08/2007Junior Web Developer at SEF Softec
  • concept development and implementation of a web portal (html, php, MySQL) in close cooperation with the customer
04/2003—07/2003Intern at ADC GmbH
  • development of bug-tracking system and temperature gauge visualization
Software Engineer and IT-Architecture
Consultant from Germany
+1 (857) 919 - 7121
jtesse@gmx.de
https://linkedin.com/in/jtesse

Education

>07/2020Industry-PhD in IT-Management
  • research related to enterprise architecture, innovation management and IoT
  • facilitating adoption / sharing of IT-solutions to improve organizational agility
05/2016M.Sc. IT-Management & -Consulting
University of Hamburg; specialized in IT-management, IT-security and traffic engineering.
09/2013B.Sc. Computer Science
FH Dortmund; specialized in computer graphics and machine learning.

Publications

2014: JavaScript Performance Optimizations for Canvas2d rendering
2016: Extending enterprise architectures for adopting the internet of things — Lessons learned from the smartPORT projects in Hamburg
2017: Internet of Things-Specific Challenges for Enterprise Architectures: A Cross-Case Comparison of Explorative Projects from the smartPORT Initiative
2018: Supporting Diffusion of IoT Solutions Exemplified by the ChainPORT Initiative
2019: Supporting Cross-Organizational Assimilation of IoT Innovation Exemplified by ChainPORT

Trainings & Certifications

12/2018Professional Scrum Product Owner
Certificate 365081 with scrum.org
04/2018Workshop Methods Training
02/2018Nmap port-scanning & security analysis
12/2017Agile Project Management
02/2015Project Management (PMBoK®)
06/2014ITIL®v3 Foundation Certificate
04/2013English language certification
CEFR: Level C1 (fluent)

Technologies & Skills

agile, dev-ops, continuous integration, scrum, kanban, JavaScript, TypeScript, node.js, vuejs, vuetify, vuex, docker, spring boot, git flow, Java, html5, php, mongoDB, MySQL, redis, PL/SQL, angular, elastic search, C++, C#, bash, security management, penetration testing, certificate management, SSL, crux, network performance, rendering performance, nginx, dns, nameserver, kubernetes, nginx ingress, helm, rancher, travis ci, jenkins, bamboo, AWS, ansible, json schema, camunda, amass, nmap, ...