Bartek

From Poland (UTC+2)

Back-end Web DeveloperSenior

8 years of commercial experience

Advertising

Banking

Data analytics

E-commerce

Fintech

Management

Marketing

Lemon.io stats

Bartek is looking for the first project with us, but we have verified and summarised the previous experience for you

Skills and seniority verified on Sep 21, 2022

Bartek – Python, Django, React

Bartek is a seasoned Python developer with over 6 years of commercial experience. His interests span programming, software architecture, and DevOps. Known for his curiosity and positive attitude, he excels in web API development, databases, CI/CD practices, web API frameworks, and the cloud and is ready for complex projects.

Main technologies

Python

5 years

Django

1 year

Additional skills

React

JavaScript

Typescript

FastAPI

AWS

Docker

Lambda

DynamoDB

Amazon SQS

Selenium

CircleCI

Bitbucket

Postman

ElasticSearch

PostgreSQL

Kubernetes

Amazon S3

Flask

Ready to start

To be verified

Direct hire

Potentially possible

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Experience Highlights

Senior Backend Developer

May 2022 - Ongoing2 years 10 months

Project Overview

This is a Fintech platform that enables Clients to make fiat (and crypto in the future) currency transactions, intending to have competitive pricing compared to other players, like Revolut, Wise, etc.

Skeleton

Responsibilities:

Created & improved RESTful application
Implemented transaction endpoint idempotency
Increased and ensured test coverage
Improved error handling
Worked on 3rd party service integration

Project Tech stack:

FastAPI

AWS

Lambda

Amazon SQS

CircleCI

Bitbucket

Docker

Python

API testing

Integration testing

Unit testing

PostgreSQL

Postman

Senior Back-End Web Developer

Apr 2021 - Jun 20221 year 2 months

Project Overview

This is an application that provides funding for eCommerce sellers who operate on one or multiple platforms.

Skeleton

Responsibilities:

Refactored legacy system
Raised code test coverage from ~30% to over 80%
Decreased failure rate from 70-80% to around 1-2%
Decreased onboarding time from ~10-15 min to <3 min
Added monitoring, including KPI statistics for business

Project Tech stack:

AWS

Python

Design system

Database design

DynamoDB

Docker

StepFunctions

Amazon S3

aws-cdk

Cloud Architecture

Amazon SQS

scraper

Selenium

Software Developer

Nov 2019 - Apr 20211 year 4 months

Project Overview

They have created an in-house CDP platform for a 3rd party customer, including data collection, processing, and analysis. The data was User gathered data used to develop Audiences for personalized ad targeting.

Skeleton

Responsibilities:

Implemented API
Implemented piggyback tracking
Wrote unit, integration, and contract tests
Rewrote part of docker-deployments into k8s
Participated in project architecture design

Project Tech stack:

Django

AWS

ElasticSearch

PostgreSQL

Contract Testing

API testing

Docker

Kubernetes

Python

Typescript

React

ETL

Back-End Web Developer

Feb 2018 - Nov 20191 year 9 months

Project Overview

The application's main feature was to create and manage Facebook and Google ad campaigns in a single place, with a simple interface, and to make it as accessible to others as possible.

Skeleton

Responsibilities:

Implemented backend API to manage Facebook campaigns
Participated in product and architecture design
Researched Facebook and Google Ads documentation
Wrote unit and integration tests
Integrated with different providers

Project Tech stack:

Django

Python

AWS

Docker

PostgreSQL

Keep in mind, the experience summary might exclude non-relevant projects

Education

2017

Apllied Science

Bachelor

Languages

English

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