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Work Background
opalczynski.plBlogger
Feb. 2023Warsaw, Mazowieckie, PolandMy place in the web.
Build yourself. Build your wealth.
NumaricsSenior Technical Consultant
Jan. 2023 - May. 2023Warsaw, Mazowieckie, PolandFinTech consulting.
ScurriSenior Software Engineer
Sep. 2022 - Jul. 2024Warsaw, Mazowieckie, Poland
NumaricsHead Of Development
Jan. 2021 - Dec. 2022Zurich, Switzerland- team building
- core services development and maintenance
- implementation of the core algorithms in the platform
- implementation of the management panel for platform operators
- CI/CD configuration
- system architecture design
- infrastructure maintenance
Stack:
- pyhon: django, django rest framework, celery
- rabbitmq
- postgresql
- GCP
- atlassian: JIRA, Confluence, BitBucket
- slack
- ansible
- docker, docker-compose
UrbanDataLab AGSenior Technical Consultant
Aug. 2019Warsaw, Mazowieckie, PolandDesigning architecture & infrastructure
REST API
Optimizing data processes
thirty3Co-Founder
May. 2019 - Dec. 2020Warsaw, Masovian District, Poland- responsible for technology division
- scaled the team from 5 to 16 in one year
- setting up the processes in technology
- maintaining customer relationships
- contributing actively to most of the products in thirty3 portfolio from different areas: marktech, fintech, proptech
- designing software architecture for the products in the portfolio
- maintaining the infrastructure on the cloud: AWS, GCP
- creating tools for workflow automation
Stack:
- atlassian: JIRA, Confluence, BitBucket, Jira ServiceDesk;
- python: django, django rest framework, celery
- postgresql
- ansible
- docker, docker-compose
- AWS: EC2, CF, SES, SQS, S3, RDS, ROUTE53
- slack
User.comTech Lead
Mar. 2019 - May. 2019Warsaw, Masovian District, Poland- prototyping the product recommendation service
- pro-actively improving the existing code base
- improved CI/CD processes
- modified the main application architecture to support multi-tenant multi-database architecture
- developing new features
- mentoring the team
Stack:
- python: django, django rest framework, celery
- postgresql
- gitlab
- OVH as cloud provider
- docker
- slack
User.comSenior Software Engineer
Jan. 2019 - Mar. 2019Warsaw, Masovian District, Poland- prototyping the product recommendation service
- pro-actively improving the existing code base
- improved CI/CD processes
- modified the main application architecture to support multi-tenant multi-database architecture
- developing new features
- mentoring the team
Stack:
- python: django, django rest framework, celery
- postgresql
- gitlab
- OVH as cloud provider
- docker
- slack
iMeshupInterim CTO
Aug. 2018 - Dec. 2018Warsaw, Masovian District, Poland- oversee the pivot process from technology division perspective
- mentoring the development team
- setting up and maintaining the infrastructure on AWS
- contributing to the code base - adding new features for the core services
- managing the team of 5
Project was stopped, because of lack of funding and too high burn rate.
Sauce LabsSenior Software Engineer
Dec. 2017 - Jul. 2018Warsaw, Masovian District, Poland- IAM service research and foundation
- API Gateway research for kubernetes
- Adapting the services to be able to run in kubernetes cluster
- Modifying and aligning CI/CD tasks in jenkins to be able to work with kubernetes cluster
- Integration layer for two products that needed to be connected
Stack:
- python: tornado, monocle
- java: springboot
- docker
- ansible
- atlassian: JIRA, Confluence
- jenkins
- gitlab
- github
- slack
- mysql
- mongodb
Risen.CTO
Jul. 2016 - Dec. 2018Warsaw, Masovian District, Poland- together with other founders - I'be built this company from scratch
- company had in the top times around 50 employees and around the same number of contractors
- more than a half of the 50 employees were programmers
- responsible directly for 13 members backend team
- responsible for setting up technology processes and standards in the technology division
- contributing to the projects from the risen portfolio in different roles: project manager, engineer, QA, tester
- maintaining customers relationships
- projects budgeting
- implementation of the processes in technology division
Stack:
- atlassian stack: JIRA, Confluence, BitBucket
- python: django, django rest framework, celery, and other frameworks
- postgresql
- elasticsearch
- slack
- AWS cloud
Company was sold in 2018.
TrurlSelf Employed
Aug. 2012Warsaw, Mazowieckie, Poland- software audits (especially in python stack)
- team building
- designing IT architecture
- designing IT infrastructure
- coding and programming
- training
- helping with requirements gathering
- mentoring
- remote office configuration
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