Lekealem A. - Lead Developer

Oberhausen, Germany

Experience

Aug 2025 - Present

5 months

Germany

Lead Developer

Sayway GmbH

Developed and tested software features for the SayWay app.
Provided code reviews and guidance to support team development.
Planned, coordinated, executed, and tested projects on the SayWay software platform.
Programmed and tested backend and frontend software features for the SayWay software platform.
Collaborated closely with IT and company management to strategically enhance the SayWay software platform.

Mar 2025 - Jul 2025

5 months

Germany

Software Developer (Freelance)

Nulegal

Implemented infrastructure on GCP with Terraform
Created MVP of full stack app using Next.js, TypeScript, and PostgreSQL
Offered code reviews and guidance for Python-based AI agent service

Aug 2024 - Feb 2025

7 months

Germany

Senior Software Developer (Freelance)

Globalchanger GmbH

Conceived, developed, and maintained Ruby on Rails backend and Vue.js frontend in collaboration with cross-functional team
Contributed to software architecture and data modeling initiatives
Facilitated pair programming sessions and mentored junior developers

Jul 2022 - Jul 2024

2 years 1 month

Germany

Senior Software Developer / Data Engineer

Freeyou AG

Implemented ETL processes with Ruby, Python, dbt and AWS services for data warehouse operations.
Developed scalable APIs in Python, FastAPI, and GraphQL to facilitate data access for other teams.
Optimized SQL queries to enhance database performance and maintain data integrity.
Developed interactive dashboards using PowerBI and Streamlit to visualize key performance indicators (KPIs) specific to each team and the company.
Involved in pair programming sessions

Sep 2019 - Jun 2022

2 years 10 months

Germany

Full Stack Developer

SMS Digital GmbH

Developed web applications for both backend and frontend in Ruby and Angular.js respectively.
Used Python to create connectors for extracting data from customers' Microsoft SQL databases and loading it into the cloud.
Implemented machine learning algorithms to identify data relationships.

Apr 2017 - Aug 2019

2 years 5 months

Germany

Full Stack Developer

OpusCapita Software GmbH

Developed and maintained microservices and RESTful APIs with React.js, Express.js, and Node.js.
Implemented and maintained libraries utilized by multiple services.
Evaluated new technologies and practices to enhance code quality and design.

Feb 2016 - Mar 2017

1 year 2 months

Germany

Software Developer

Marley Spoon GmbH

Developed web applications encompassing both frontend and backend components, contributing to the design, construction, and upkeep of Marleyspoon's extensive platform infrastructure.
Assessed innovative technologies and methodologies to enhance application functionality and drive business growth.

Jun 2011 - Jan 2016

4 years 8 months

Germany

Mathematician and Software Developer

InVision AG

Developed cloud SaaS workforce management suite using Ruby on Rails and various technologies across integrated systems.
Evaluated, developed, and implemented forecasting models.
Enhanced software functionality by conducting data analysis and statistical modeling with Python.

Apr 2010 - Feb 2011

11 months

Germany

Intern and Thesis Student

Vattenfall Energy Trading GmbH

Researched and applied multivariate statistical methods to forecast electricity price contributors for thesis.
Created a tool to predict the volume of electricity generated by Vattenfall power plants in Germany.
Developed a model to forecast electricity demand in Germany.
Contributed to the development of a model for predicting electricity spot prices in Germany.