Source Angel is the team of young and enthusiastic professionals. We believe that people are the reason we are able to do what we do. We are headed by Danish management and this fact defines our main values: respect, people orientation and highest quality for everything we do.
25 ноября 2021

Python Engineer


We are looking for an experienced Python Engineer to join a development team with 6 different nationalities working out of our office in Copenhagen and Dnipro. Our company language is English, and we are working closely together across borders to improve our daily lives.

CO2HERO aims to be the epicentre of knowledge, providing transparency and insight, related to our global CO2 footprint to help people live and engage in a balanced, low-carbon lifestyle.

Required skills:

  • 3+ years of experience with Python and SQL using psycopq2;
  • Experience with advanced queries in SQL without using ORM;
  • Experience with PostgreSQL;
  • Solid knowledge of object oriented programming and preferable with experience from a low level programming language;
  • Experience with implementing based on security by design;
  • Experience with performance tuning and improvements;
  • Write clean and well documented code;
  • Analytical thinking;
  • Experience with UnitTesting based on testing logic and not just code coverage;
  • Feels at ease working in English — Intermediate level or higher.

As a plus:

  • Understanding and experience with GraphQL;
  • Experience with Git / GitHub;
  • Experience with NoSQL databases;
  • Experience with Microservise architecture and messaging;
  • Experience working with AWS / Azure.

As part of our team, you’ll enjoy:

  • Working in team of smart, creative people;
  • Flexible working hours;
  • 20 days of paid vacation;
  • Paid sick-leaves;
  • Corporate events;
  • Nice office in city-center of Dnipro.


  • Backend development in Python, GraphQL and PostgreSQL;
  • Interaction with other members of the project team;
  • Estimation management, code review;
  • Extending our proprietary framework (We aren’t using Django);
  • Analyzing and troubleshoot complex problems in a timely and accurate manner;
  • Actively looking for security vulnerabilities in the code, in code reviews and in the project design.

Project Description:

Climate change is impacting human lives in a variety of ways. It threatens the essential ingredients of good health — clean air, safe drinking water, food supply, and protection from catastrophic weather conditions.

Each of us is responsible for climate change through our way of life. In particular, CO2 emissions are affected by what we eat, how we transport ourselves, where we live, and the products we buy.

Most of us are aware there are consequences of those lifestyle choices. However, the consequences of each of our individual lifestyle choices are not fully transparent or easy to measure.

We know we should reduce air travel, but we do not know the exact consequence / CO2 footprint of a weekend trip to Barcelona, the impact of becoming vegetarian or flexitarian, or getting an electric car instead of an ICE car. We would like to better understand the impact of these choices and get inspired from like-minded individuals across the globe.

CO2HERO is a movement to better our daily lives.