Maciej Wilanowski - Senior Software Engineer

Q: Where is Maciej based?

Maciej is based in Hamburg, Germany .

Q: What languages does Maciej speak?

Maciej speaks the following languages: Polish (Native), German (Advanced), English (Intermediate), Spanish (Elementary) .

Q: How many years of experience does Maciej have?

Maciej has at least 19 years of experience. During this time, Maciej has worked in at least 8 different roles and for 10 different companies . The average length of individual experience is 2 years and 11 months . Note that Maciej may not have shared all experience and actually has more experience.

Q: What is Maciej's latest experience?

Maciej's most recent position is Senior Software Engineer at EQS Group GmbH .

Q: What companies has Maciej worked for in recent years?

In recent years, Maciej has worked for EQS Group GmbH , C2S2 GmbH , and KISTERS AG .

Q: Which industries is Maciej most experienced in?

Maciej is most experienced in industries like Information Technology (IT) , Automotive , and Education . Maciej also has some experience in Food and Beverage and Government and Public Administration .

Q: Which business areas is Maciej most experienced in?

Maciej is most experienced in business areas like Information Technology (IT) , Product Development , and Research and Development (R&D) .

Q: Which industries has Maciej worked in recently?

Maciej has recently worked in industries like Information Technology (IT) and Government and Public Administration .

Q: Which business areas has Maciej worked in recently?

Maciej has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Hamburg, Germany

Experience

Jan 2022 - Present

4 years 2 months

Munich, Germany

Senior Software Engineer

EQS Group GmbH

Further development of the compliance products
Role responsibility as a Senior Software Engineer
Team size: 5 - 15 people
Tools: TypeScript, Angular 18, Node.js, Nest.js, AWS, Kubernetes/Helm Charts/Docker, GitLab (CD/CI), Elasticsearch, MySQL, OpenAI, Java, RabbitMQ

Mar 2021 - Dec 2021

10 months

Bonn, Germany

Senior Software Engineer (Freelancer)

C2S2 GmbH

Further development of the product at [link]
Role responsibility as a Senior Software Engineer
Team size: 4 - 6 people
Tools: Angular 11, AngularJS, TypeScript, Java 8, Node.js, Elasticsearch, Microsoft Azure, MongoDB, Express.js, Actionhero

Aug 2020 - Feb 2021

7 months

Oldenburg, Germany

Senior Full Stack Developer (Freelancer)

KISTERS AG

New development of the federal reporting portal for electronic submission of reports for ships in maritime traffic
Team size: 8 people
Frontend (approx. 90%)
Concept and definition of the models
Creation of input masks for report classes (reactive forms)
Creation of reusable UI components
Backend (approx. 10%)
Extension of the REST interfaces
Creation of SpringData repositories
Tools: Angular 9.x, TypeScript, Node.js, SASS, Java 8, Spring Boot, Data, Hibernate, Elasticsearch, Git, Jenkins, Ansible, REST, Jira, IntelliJ IDEA

Mar 2019 - Apr 2020

1 year 2 months

Hamburg, Germany

Senior Full Stack Developer (Freelancer)

LunchNow.com

Further development of the partner area for managing and administering restaurants and dishes
Further development of the backend for the partner area
Development of the payment feature for the web application
Creation of UI components
Integration of the payment provider MangoPay into the backend
Further development of the mobile app (React Native)
Tools: Angular 7.x, React Native, TypeScript, SASS, Node.js, Firebase (Firestore, Cloud Functions, Auth, Storage), Git, Bitbucket, REST, Jasmine, Jira, Scrum, IntelliJ IDEA

Nov 2018 - Aug 2020

1 year 10 months

Hamburg, Germany

Developer, Designer, Architect

Oyeyku

Development of an app to collect items with friends for joint real-time activities ([link]
Chat function
Inviting friends using Dynamic Links
Tools: React Native, React JS, Firebase, IntelliJ IDEA, Git

Aug 2016 - Oct 2016

3 months

Braunschweig, Germany

Android Developer (Freelancer)

Volkswagen AG

Development of an Android event app to display information about exhibited cars based on the current location
Integration of AR and beacon technology
Bug fixing
Tools: Android Studio, Java 8, Android SDK, Git

Feb 2016 - Dec 2016

11 months

Braunschweig, Germany

Developer, Designer, Architect

Real Color Mixer

Implementation of mathematical models for subtractive color mixing to simulate paint mixing
Development of UI components
Implementation of a search function to find a mix for a color
Tools: Android SDK, Java 8, SQLite, Git, Android Studio

May 2010 - Mar 2019

8 years 11 months

Wolfsburg, Germany

Java and Frontend Developer

Webware-Experts OHG

Participation in the Web Frameworks competency project for the Volkswagen Group
Evaluation and definition of web technologies for the Volkswagen Group
Support of various in-house projects in design and development phases (e.g. MBNeu, GroupFind, Mood Barometer)
Development of project-based solutions and VW CI-compliant themes
Research into new Rich Internet Applications / frameworks
Tools: Angular 1.5–6.x, Java, JSF 1.2/2.x, IceFaces, PrimeFaces, HTML5, CSS3, SASS, LESS, TypeScript, JavaScript, NodeJS, Bootstrap, Spring Boot, Hibernate, Spring Security, Microservices, REST, GWT, Vaadin, ExtJS, Tomcat, WebSphere, WebSeal, SVN, Git, Maven, Keycloak, Eclipse, RAD, Cloud Foundry, OpenStack, Artifactory, Jasmine, JUnit, Scrum

Mar 2008 - Apr 2010

2 years 2 months

Braunschweig, Germany

Working Student

Netzlink GmbH

Assembly, installation, and maintenance of PC systems, IBM xServers, IBM System Storages, as well as Microsoft and Linux client operating systems
Creation and processing of video podcasts

Jan 2007 - Dec 2010

4 years

Braunschweig, Germany

Student Assistant, Java Developer

TU Braunschweig

Development of web systems with Struts, Velocity, PostgreSQL, and Java 1.4

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (18 years), Automotive (9 years), Education (4 years), Food and Beverage (1 year), and Government and Administration (0.5 years).

Information Technology

Automotive

Education

Food and Beverage

Government and Administration

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (19 years), Product Development (16 years), and Research and Development (1 year).

Information Technology

Product Development

Research and Development

Summary

I am a Senior Software Engineer with over 12 years of professional experience, mainly specializing in full-stack applications, focusing on: Angular, Node.js, Express.js, Nest.js, MongoDB, Elasticsearch.

Skills

Programming Languages: Typescript, Javascript, Java
Css, Less, Sass, Html, Sql
Frameworks And Tools: Angular (16), React.js, Material Ui, Bootstrap, Jquery, Eslint, Jest, Jasmine, Webdriverio, Node.js, Express.js, Nest.js, Mongodb, Elasticsearch, Intellij Webstorm, Eclipse, Android Studio, Android, React Native, Git, Maven, Java Ee, Jsf (1.2 And 2.x), Primefaces, Icefaces, Scrum
Devops Tools: Aws, Ms Azure, Kubernetes + Docker, Gitlab, Jira, Jfrog, Confluence, Jenkins, Google Firebase

Languages

Polish

Native

German

Advanced

English

Intermediate

Spanish

Elementary

Education

Oct 2003 - Jun 2010

TU Braunschweig

Diploma in Computer Science · Computer Science · Braunschweig, Germany

Sep 1994 - Jun 1997

High School in Rypin

Rypin, Poland

Certifications & licenses

Driver's license classes A and B

Profile

Created

October 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Maciej based?

Maciej is based in Hamburg, Germany.

What languages does Maciej speak?

Maciej speaks the following languages: Polish (Native), German (Advanced), English (Intermediate), Spanish (Elementary).

How many years of experience does Maciej have?

Maciej has at least 19 years of experience. During this time, Maciej has worked in at least 8 different roles and for 10 different companies. The average length of individual experience is 2 years and 11 months. Note that Maciej may not have shared all experience and actually has more experience.

What roles would Maciej be best suited for?

Based on recent experience, Maciej would be well-suited for roles such as: Senior Software Engineer, Senior Software Engineer (Freelancer), Senior Full Stack Developer (Freelancer).

What is Maciej's latest experience?

Maciej's most recent position is Senior Software Engineer at EQS Group GmbH.

What companies has Maciej worked for in recent years?

In recent years, Maciej has worked for EQS Group GmbH, C2S2 GmbH, and KISTERS AG.

Which industries is Maciej most experienced in?

Maciej is most experienced in industries like Information Technology (IT), Automotive, and Education. Maciej also has some experience in Food and Beverage and Government and Public Administration.

Which business areas is Maciej most experienced in?

Maciej is most experienced in business areas like Information Technology (IT), Product Development, and Research and Development (R&D).

Which industries has Maciej worked in recently?

Maciej has recently worked in industries like Information Technology (IT) and Government and Public Administration.

Which business areas has Maciej worked in recently?

Maciej has recently worked in business areas like Information Technology (IT) and Product Development.

What is Maciej's education?

Maciej holds a Master in Computer Science from TU Braunschweig.

Does Maciej have any certificates?

Maciej has 1 certificate: Driver's license classes A and B.

What is the availability of Maciej?

Maciej is immediately available for suitable projects.

What is the rate of Maciej?

Maciej's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.