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Aleksander – Python, Django, Flask, experts in Lemon.io

Aleksander

From Portugal (GMT+1)

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Back-end Web DeveloperSenior
Hire developer
13 years of commercial experience
Architecture
Business intelligence
Climate tech
Computer science
Cybersecurity
Data analytics
E-commerce
Electronics
Gamedev
Govtech
Machine learning
Public services
Sales
Reverse auction
CRM
Dev tools
Embedded software
Utilities
Video streaming software
Gaming software
Lemon.io stats
1
projects done
748
hours worked
Open
to new offers

Aleksander – Python, Django, Flask

Meet Aleksander - a Senior Back-End Web Developer with solid experience in Python. He is proficient in various Python implementations and has expertise in event-driven microservices, cloud engineering, and building data pipelines. His experience spans such domains as climate tech, cyber threat intelligence, CRM systems, and more. Apart from coding, Aleksander enjoys reading and playing the piano!

Main technologies
Python
8 years
Django
3 years
Flask
1 year
Additional skills
API
Kafka
JavaScript
Kubernetes
PostgreSQL
TDD
Pyramid
Redux
ElasticSearch
Typescript
SQLAlchemy
HTML
React
CSS
Java
Aiohttp
Redis
Docker
Styled-components
REST API
C++
AWS
Amazon SQS
Amazon EC2
FastAPI
Kafka
MySQL
Xamarin
RabbitMQ
Redux
Pyramid
Linux
Pandas
Rewards and achievements
Big tech veteran
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Lead developer
Mar 2022 - Feb 202311 months
Project Overview

System that process climate data for buildings. From software point of view it has CDN, API and data processing pipeline. Pipeline is fault tolerant and scalable.

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Responsibilities:
  • Designed and impelemnted cloud architecture for data processin
  • Designed and implemented initial REST API
  • Implemented CI / CD system
  • Documented the system
Project Tech stack:
AWS
Python
Django
Senior software engineer
Mar 2021 - Jan 202210 months
Project Overview

System that performs cyber threat intelligence (compromised IP addresses, files, credentials, URLs, etc). It aggregates data from different sources (logs, dark net, crawlers, leaked databases, etc) and performs complex search of company's assets among indicators of compromise.

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Responsibilities:
  • Implemented data piplines that automate cyber threat intelligence (usually a chain of services connected trough Kafka queue)
  • Implemented REST API for interaction between services
  • Implementing REST API for interaction between client side (browser) and backend services
  • Documented system, clarified business requirements
Project Tech stack:
Python
Django
FastAPI
MySQL
Docker
Kubernetes
Kafka
Senior software engineer
Oct 2019 - Feb 20211 year 4 months
Project Overview

System that orchestrace an EC2 machines, on each machine there exists an agent that runs a pipeline, aggregates results and sends them to server.

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Responsibilities:
  • Designed and implementated of data pipelines
  • Refactored legacy code
Project Tech stack:
Python
Django
PostgreSQL
ec2
sqs
Docker
AWS
Senior software engineer
Jun 2018 - Oct 20191 year 4 months
Project Overview

Service that runs a pipeline of ML algorithms on a video stream from doorbels and security cameras.

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Responsibilities:
  • Implemented service that runs ML pipeline on video frames
  • Clarified requirements, designed architecture, documentated system
Project Tech stack:
Python
Aiohttp
FFmpeg
ec2
sqs
Docker
AWS
Senior software engineer
Jun 2016 - Jun 20182 years
Project Overview

One of the commercial platforms for e-procurement systems. Web site where businesses may create a supplier for government procurements. All commercial platforms are independent and implement different sets of features, they synchronize data with the central database of government procurements.

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Responsibilities:
  • Splitted monolith into microservices
  • Designed and implemented couple of microservices
  • Designed and implemented client-side library (react, styled-components)
  • Implemented complex search page (using new component library)
  • Documented the system
  • Lead a small team
Project Tech stack:
Python
Pyramid
PostgreSQL
Redis
RabbitMQ
JavaScript
React
Redux
Senior software engineer
Jul 2015 - Jun 201610 months
Project Overview

Customer relationship management (CRM) system for one of the largest marketplaces in Ukraine.

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Responsibilities:
  • Designed and implemented complex business logic for CRM
  • Refactored of legacy code
  • Fixed bugs
  • Documentated the system
Project Tech stack:
Python
pylons
PostgreSQL
Redis
RabbitMQ
JavaScript
React
Redux
Senior software engineer
Jun 2016 - Jun 2016
Project Overview

Status service that periodically polls APIs and reports incidents.

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Responsibilities:

  • Designed and implemented status page
Project Tech stack:
Python
Flask
Software engineer
Aug 2013 - Sep 20141 year 1 month
Project Overview

Core library for small-sized games (implemented in Java, could be compiled to Android, iOS and JavaScript).

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Responsibilities:
  • Implementated rendering-related and sound-related components of library
  • Fixed bugs
  • Documentated the library
  • Mentored junior developers
Project Tech stack:
Java
JavaScript
Xamarin

Education

2009
Physics
Master of science

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