kjaniszewski
Krzysztof Janiszewski
Technical Team Lead at The Portfolio Collective
Wielka Nieszawka, Poland

Experienced Fullstack Developer with a demonstrated history of working in the information technology and services industry. Strong engineering professional skilled in Customer Service, PHP, JavaScript, Strategic Planning, Web Development, and Project Management.

CodersRank Score

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This represents your current experience. It calculates by analyzing your connected repositories. By measuring your skills by your code, we are creating the ranking, so you can know how good are you comparing to another developers and what you have to improve to be better

Information on how to increase score and ranking details you can find in this blog post.

3,290.6
CodersRank Rank
Top 1%
Top 5
JavaScript
JavaScript
Developer
Poland
Top 5
PHP
PHP
Developer
Poland
Top 1
Svelte
Svelte
Developer
Poland
Show all badges
Highest experience points: 0 points,

0 activities in the last year

PHP
PHP
1,125
exp.
Top 0.04% out of 106K Worldwide Top 1% out of 460 Poland
JSON
JSON
336
exp.
Top 0.7% out of 281K Worldwide Top 2% out of 1K Poland
Svelte
Svelte
261.5
exp.
Top 0.4% out of 5K Worldwide Top 5% out of 24 Poland
JavaScript
JavaScript
667.9
exp.
Top 0.2% out of 278K Worldwide Top 1% out of 1K Poland
CSS
CSS
203.6
exp.
Top 0.4% out of 264K Worldwide Top 1% out of 1K Poland
HTML
HTML
73.8
exp.
Top 5% out of 291K Worldwide Top 8% out of 1K Poland
SCSS
SCSS
536.7
exp.
Top 0.03% out of 127K Worldwide Top 1% out of 659 Poland
Symfony
Symfony
Top 0.06%
ReactJS
ReactJS
Top 5%
Svelte
Svelte
Top 3%
NodeJS
NodeJS
Top 12%
Webpack
Webpack
Top 0.9%
NextJS
NextJS
Top 45%
ChartJS
ChartJS
Top 7%
Rollup
Rollup
Top 8%
Laravel MongoDB
Laravel MongoDB
Top 45%
Gulp
Gulp
Top 17%
JUnit
JUnit
Top 41%
Yii2
Yii2
Top 82%
Laravel
Laravel
Top 89%
Angular
Angular
Top 92%
RxJS
RxJS
Top 90%
Jest
Jest
Top 91%
Redux
Redux
Top 94%
GraphQL
GraphQL
Top 98%
List your work history, including any contracts or internships
The Portfolio Collective
3 years 4 months
Current workspace
Currently Krzysztof Janiszewski supports the The Portfolio Collective

Krzysztof Janiszewski's scores will be added to this company.

Technical Team Lead
Nov 2022 - Present (2 years 1 month)
Senior Fullstack Developer
Aug 2021 - Dec 2023 (2 years 4 months)
Senior Fullstack Developer
wordpress php ReactJS mysql gcp google cloud javascript kubernetes docker symfony ReactJS aws terraform rest api jenkins phpunit phpmyadmin elasticsearch php composer linux nginx ci/cd scss css composer bash gitlab
Centrum Psychiatrii i Psychoterapii COLLIGO
Sep 2020 - Nov 2024 (4 years 2 months)
Toruń, Kujawsko-pomorskie
Manager at Centrum Psychiatrii i Psychoterapii COLLIGO
Responsible for business development, management and software development for this clinic.
svelte php javascript api android mysql chrome ajax rest api responsive design scss webpack json jquery npm sass xml axios oop symfony unit testing tdd phpunit php composer
SEOBUDDY
Nov 2017 - Aug 2021 (3 years 9 months)
Remote
CTO & Co-Founder
CTO & Co-Founder
php symfony mysql scss headless nodeJS api figma json paddle responsive design npm sass axios webpack ajax jquery

Add some compelling projects here to demonstrate your experience
SEO Buddy
Sep 2018 - Present
InfiniteQuant
SEO Buddy helps business owners to manage in-house and own their SEO strategy with simple frameworks that they can assign to their team.
php mysql symfony javascript docker scss api redis github git responsive design json webpack npm gulp ajax jquery rest api
Check Demo
Ecenter.pl
Apr 2007 - Feb 2014
Ecenter
Software for my own webhosting company. It provides admin area for company it-self and customers. Most important functions:
- domain management
- mailbox management
- invoicing
- mailing list management
- online payments
- newsletters
- promo codes
- uses API for various domain registrars
- user notifications
- server on-line configuration
php php composer linux css javascript responsive design ajax rest api json jquery npm scss css3 adobe photoshop html5 xml domain apache webserver database design scripting oop
Check Demo
Data mapping on Google Maps
Jan 2011 - Mar 2012
ecenter.pl
Software was designed to allow to map any numerical data (sales, votes, survey results) onto selected area on google maps. It allowed it show density of selected data on tiles on maps, analyze trends etc. Maps could be viewed online with analysis results.

Project is offline now, but you can see screenshots of analysis in document created by City of Włocławek (http://rewitalizacja.wloclawek.eu/media/download/szczegolowa_diagnoza_obszaru_r/5c88ad3d5bf52_szczegolowa_diagnoza_obszaru_rewitalizacji_wloclawka.pdf), where software was used to find most "devastated" area of city. This area has been provided revitalization later.
javascript php google maps api scss responsive design json ajax rest api jquery html xml oop database design webserver apache

This section lets you add any degrees or diplomas you have earned.
Dec 1998 - Dec 2003
Nicolaus Copernicus University
Jan 1999 - Jan 2004

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