Daniel Lesner
Contact
Projects
Pulmo Rehab
Pulmo Rehab
Ruby on RailsEmber.jsPostgreSQL
Pulmo Rehab is a health platform where patients sync their smart watches/bracelets data for doctors to monitor and analyze. It enables real-time insights, helping healthcare providers track pulmonary health and offer personalized care.
Work
Full-stack Web Developer
Sightcall
04/2022 - Present (2 years)
Boulogne-Billancourt, France
- Developed and tested new features to enhance the company's SaaS solutions.
- Worked in a Test-Driven Development (TDD) environment.
- Engaged in backporting and refactoring legacy code.
- Integrated third-party services like Sharepoint and Google Drive.
- Participated in an Agile setup with bi-weekly sprints.
Frontend:
Ember.jsReact.jsBootstrapJestXState
Backend:
Ruby on RailsSidekiqRSpecJSONAPI-Resources
Databases:
MariaDBRedisElasticSearch
Others:
BashDockerJenkinsGitlab CI/CD
React Frontend Developer
MBN-TECH
10/2021 - 04/2022 (6 months)
Bucharest, Romania
- Worked on a decentralized multi-blockchain application.
- Learnt about blockchain, smart contracts & web3.js.
- Worked with DeFi concepts like token creation and staking.
Frontend:
TypeScriptReact.jsMaterial-UINext.js
Backend:
Node.jsSolidity
Customer Excellence Support Analyst
VTEX
11/2020 - 08/2021 (9 months)
Bucharest, Romania
- Supported partners in developing websites using VTEX's framework.
- Addressed technical and business requirements for clients.
- Managed SEO optimization, debugging, and project management.
- Gained knowledge about the digital commerce industry.
Frontend:
HTMLCSSJavaScriptVTEX IO
Junior Data Scientist
GfK
10/2018 - 11/2020 (2 years)
Bucharest, Romania
- Worked on Test and Control studies for ad effectiveness.
- Developed scripts to automate tasks.
- Processed large databases and improved workflows.
- Trained colleagues and wrote technical documentation.
Programming:
RPythonSPSSVBABASHSQL
Tools:
GfK StarTrack
Education
MPhil Economics
University of Cambridge
09/2016 - 10/2017
Cambridge, England
- Specialised in microeconomics, macroeconomics and econometrics.
- Dissertation on “Inequality and its Effect on Economic Growth”.
BSc Economics
University of Essex
09/2011 - 06/2014
Colchester, England
- Graduated with a First Class award, included in “Dean’s List” due to exceptional results.
- Specialised in calculus, statistics and econometrics.
- Dissertation on “The Effects of Minimum Wages in Europe”.
General Certificate of Education
Costache Negruzzi National College
09/2003 - 07/2011
Iasi, Romania
- Passed the Romanian Baccalaureate with a top grade (8.6 out of 10).
- Scores: Mathematics (9.5), Physics (8.1), Romanian Literature (8.1).