Curriculum vitae
PERSONAL INFORMATION
Sylwester Kardziejonek
Jagielońska 14/8A, 70-437 Szczecin (Poland)
(--https://pl.linkedin.com/in/sylwester-kardziejonek-a-
https://www.upwork.com/freelancers/~01f-bc4eb7dc
Date of birth 26/03/1992 | Nationality Polish
PREFERRED JOB
Full Stack Web Developer
WORK EXPERIENCE
11/2016–09/2018
Senior Software Engineer / Tech Lead
Apptimia, Szczecin (Poland)
I was working on a GIS web application for the UAV sector, targeted at both private and enterprise
customers to help them streamline their acquisition and consumption of imagery data captured by
drones.
As a full-stack developer and tech lead I was responsible for designing and developing the underlying
software architecture, as well as deploying the application stack in an AWS cloud environment.
During my time I've created a REST API in python 3 using Django REST Framework, as well as
Node.js based WebSocket application for displaying a real-time position of drones in-flight.
Tech stack consisted of:
- python 3 / Django / Django REST Framework
- TypeScript / Node.js / Socket.IO
- PostgreSQL + PostGIS extenstion / Redis / MongoDB
- AWS ECS / Terraform
03/2012–05/2016
Lead Developer / Project Manager / IT Consultant
Spreenauten GmbH, Berlin (Germany)
I was a Head of Web Development supporting most of the IT branch of the company.
My responsibilities included:
▪ designing and implementing core parts of the projects
▪ comprehensive IT consulting, helping with recruitment process and key decisions
▪ maintaining legacy code
▪ running code quality checks
▪ designing and building both front and back-end of rental and stock management systems
▪ full-stack web development of multiple websites and web apps
03/2014–01/2016
R&D Consultant
CYREN GmbH, Berlin (Germany)
▪ I've supported the development of customer facing mail server configuration interface.
▪ I was assigned a wide variety of tasks related to database layer or user interface.
06/2011–Present
16/12/18
Full Stack Web Developer
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Curriculum vitae
Sylwester Kardziejonek
https://www.upwork.com/o/profiles/users/_~01f-bc4eb7dc/
In my freelance career I worked on many different projects. From small scripts through e-commerce
and social websites to advanced proprietary systems.
My responsibilities included:
▪ maintaining legacy code
▪ designing whole systems from scratch
▪ creating small to medium sized websites
▪ creating e-commerce solutions
▪ integrating SOAP and REST APIs
Technologies I've worked with:
▪ PHP, Laravel, Zend, Kohana
▪ Python, Pyramid, Django
▪ JavaScript, Knockout, AngularJS, VueJS
▪ MySQL, PostgreSQL
▪ Redis, MongoDB
▪ Linux, Apache, Nginx, uWSGI
EDUCATION AND TRAINING
09/2008–06/2012
Technikum Informatyczne SCI, Szczecin (Poland)
PERSONAL SKILLS
Mother tongue(s)
Polish
Foreign language(s)
UNDERSTANDING
SPEAKING
WRITING
Listening
Reading
Spoken interaction
Spoken production
English
B2
B2
B1
B1
B2
German
A1
A2
A1
A1
A1
Levels: A1 and A2: Basic user - B1 and B2: Independent user - C1 and C2: Proficient user
Common European Framework of Reference for Languages
Communication skills
▪ excellent communication skills gained through direct contact with executives, business partners
and customers from different world regions
▪ good team management gained by leading a small team of developers scattered around the world
Organisational / managerial skills
▪ independence and self organization gained by freelancing
▪ management skills gained while leading a development of bigger projects in my freelance career
Job-related skills
▪ understanding of agile development processes
▪ ability to read and understand technical documentation related to software development
▪ great mentoring skills
16/12/18
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Curriculum vitae
Sylwester Kardziejonek
Digital skills
SELF-ASSESSMENT
Information
processing
Communication
Content
creation
Safety
Problem
solving
Proficient user
Proficient user
Proficient user
Proficient user
Proficient user
Digital skills - Self-assessment grid
PSM I
IT technician
▪ HTML5 / CSS3
▪ JavaScript, AngularJS, Vue, KnockoutJS
▪ MySQL, PostgreSQL
▪ PHP5+, Python 2/3
▪ Kohana, Laravel, Pyramid, Django frameworks
▪ Scrum, Agile
▪ Git
▪ Windows, Linux (Debian based)
Driving licence
B
ANNEXES
▪ IT_technician_certificate_supplement.pdf
▪ PSM I.pdf
16/12/18
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European skills passport
Sylwester Kardziejonek
IT_technician_certificate_supplement.pdf
Handy Scanner for Android
16/12/18
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European skills passport
Sylwester Kardziejonek
Handy Scanner for Android
16/12/18
© European Union,- | http://europass.cedefop.europa.eu
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European skills passport
Sylwester Kardziejonek
PSM I.pdf
This is to certify that on Mon 19 Sep 2016
Sylwester Kardziejonek
Demonstrated a fundamental level of Scrum mastery, proving an understanding
of Scrum as described in the Scrum Guide and the concepts of applying Scrum.
In recognition of this, Scrum.org is pleased to provide this certification.
Professional Scrum Master I
16/12/18
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