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Hi, this is Fynn

Fynn Leitow

Software Engineer at Perfood GmbH

I am a software engineering generalist. I develop mobile apps with web technology and build machine learning pipelines. My educational background is in mathematics, data and computer science. Contact me via ${myFirstName}@${myLastName}.eu

Skills

TypeScript
TypeScript

Advanced knowledge of TypeScript. Primary language for web app development with Angular, Ionic and NodeJS (Express, NestJS).
Python
Python

Primary language for data processing pipelines (pandas, numpy). Experienced in training and deploying machine learning models (scikit-learn).
Mobile Apps
Mobile Apps

Experienced in developing cross-platform apps (iOS/Android) using web technology (Ionic, Capacitor, Cordova, Angular).
Agile Software development
Agile Software development

Experienced in working in agile Teams using Scrum, developing requirements and reviewing prototypes together with relevant stakeholders.
Databases
Databases

Experienced in using both SQL (PostgreSQL, SQLite) and NoSQL databases for software development. Advanced knowledge of CouchDB.

Git
Git

Experienced with git-based development (GitLab/GitHub, merge requests, CI/CD pipelines)
Leadership
Leadership

Experienced in onboarding, interviewing and coaching. Knowledge about modern leadership concepts. High sense of ownership. Understanding of business needs. Strong self-organization using org-mode.

DevOps
DevOps

Using Ansible for infrastructure management and deployments. Familiar with setting up and maintaining Docker-based CI/CD pipelines.
Ubuntu Linux
Ubuntu Linux

Using as server operating system. Capable of basic server administration tasks with Ansible, Systemd and bash scripts.
Cloud Computing
Cloud Computing

Experienced in migrating to and maintaining a web app on the IBM Cloud (CloudFoundry, Cloudant).
E-mail
E-mail

Experienced in managing marketing and transactional email systems, ensuring a high deliverability at all relevant providers. Familiar with DNS configuration (DKIM, SPF, DMARC).
Java
Java

Used as primary language for backend software development from Aug 2016 - Feb 2018 and for my bachelor thesis. Experienced in building C4 architechture models and troubleshooting Android plugins.

Experiences

1
Perfood GmbH

Mar 2018 - Present, Lübeck, Germany

Perfood develops digital therapeutics for better metabolic health, by providing personalized dietary and lifestyle recommendations via an app and continuous glucose monitoring.

Software Engineer (Fullstack & Data)

Apr 2020 - Present

  • Software engineering and maintenance accross systems: Mobile app, backend, data analysis pipeline.
  • Implementation and maintenance of the app logic which enabled Perfood to offer their product in different variations, conduct paid and clinical studies and raise a 5M € Series A
  • Migration of the app backend code to the IBM Cloud
  • Migration of the app to Capacitor and modern Ionic/Angular
  • Maintenance and regulatory compliance (OWASP) of the app’s open source authentication and authorization backend (NodeJS, CouchDB)
  • Basic Linux administration and infrastructure management with Ansible
Software Engineer - working student (part time)

Oct 2018 - Mar 2020

  • App business logic
  • Data engineering with Python and SQL
  • Develop and deploy a patent-pending machine learning model
Junior Software Engineer (full time)

Mar 2018 - Sep 2018

Software Engineer - Working Student (part time)
MSP AG

Oct 2016 - Feb 2018, Hamburg, Germany

MSP develops customized marketing efficiency solutions based on the content management platform Censhare. I worked on their advertising material procurement platform for large retailers.

Responsibilities:
  • Maintenance of a legacy codebase (Java, XML) for data import and aggregation, improving performance and flexibility
  • Migration from a custom SQL-based setup to a tighter integration with Censhare, reducing deployment time and effort.
2
3
Academic Assistant
University of Greifswald, Prof. Mathias Hammerl

Oct 2013 - July 2014, Greifswald, Germany

Responsibilities:
  • Digitizing the lecture scripts for analysis I & II using LaTeX
  • Designing explanatory graphics with Mathematica

Education
Leuphana University Lüneburg
2018-2021
M.Sc Management & Data Science
Final grade: 1.4 out of 1 (best) - 4 (pass)
Publications
  • M.Sc. Thesis: „Modelling Postprandial Glucose Responses through Bayesian Learning of Differential Equations“
Taken Courses
  • Deep Learning (PyTorch)
  • Natural Language Processing (NLTK, SpaCy)
  • Probabilistic Modelling (Stan)
  • Network Analysis (NetworkX)
  • Time Series Analysis (R)
  • Storage and Mining of Massive Datasets
  • Computational Statistics
  • Learning from Data
  • Artificial Intelligence
  • Data Economy
  • Digitalization
  • Organization, Strategy & Innovation
  • Data Privacy & Ethics
University of Greifswald
2013-2018
B.Sc. Mathematics & Computer Science
Final grade: 1.8 out of 1 (best) - 4 (pass)
Publications
Taken Courses
  • Data Structures and Efficient Algorithms
  • Randomized Algorithms
  • Algorithms and Programming
  • Designing Interactive Systems
  • Theoretical Computer Science
  • Ordinary Differential Equations
  • Numerics
  • Statistics
  • Optimization
  • Analysis
  • Algebra
  • Linear Algebra and Analytical Geometry
Albert-Einstein Gymnasium Buchholz
2004-2011
High School
Final Grade: 1.5 out of 1 (best) - 4 (pass)
Taken Courses
  • Mathematics
  • Physics
  • Latin

Projects

CouchAuth
Maintainer May 2018 - Present

An authentication backend for CouchDB-based offline first apps: Migrated the code to TypeScript and secured it according to current OWASP guidelines

professional open-source
Star
TreeCover
Team lead Sep 2019 - Dec 2019

A project at Helsinki University in collaboration with the UN’s FAO and the non-profit Avoin: MVP for data scraping and the prediction of tree cover estimates from sattelite data

university
Star