freiberufler Senior Software Developer, System Engineering and System Testing Professional auf freelance.de

Senior Software Developer, System Engineering and System Testing Professional

offline
  • auf Anfrage
  • 13347 Berlin
  • National
  • de  |  en
  • 23.02.2024

Kurzvorstellung

Backend and frontend developer with years of experience in developing security-relevant and distributed systems. Significant experience in leadership roles.

Qualifikationen

  • Amazon Web Services (AWS)1 J.
  • Go (Programmiersprache)1 J.
  • Golang1 J.
  • Kubernetes1 J.
  • Lead-Management
  • Linux (Kernel)
  • Node.Js9 J.
  • Software engineering / -technik
  • TCP / IP1 J.
  • Terraform
  • Test Automation1 J.
  • UI UX

Projekt‐ & Berufserfahrung

Project Lead and Full Stack Developer, TUI Group Tech Forum Member
TUI Group, Berlin
11/2024 – offen (1 Monat)
Tourismus und Freizeitwirtschaft
Tätigkeitszeitraum

11/2024 – offen

Tätigkeitsbeschreibung

- Responsible for the integration of a headless CMS, optimizing services and (micro-)frontends utilizing AWS.
Holding a key role in TUI's Web Architecture Forum, setting technical standards and benchmarks.
- Maintain strong relationships with key stakeholders to ensure alignment and smooth progression of project objectives.
- Mentor of interns and students, providing guidance and support on their professional development journeys.

Eingesetzte Qualifikationen

Amazon Web Services (AWS), Golang, Lead-Management, Node.Js, Software engineering / -technik, Test Automation

Systems Engineer
Kundenname anonymisiert, Berlin
3/2021 – 5/2021 (3 Monate)
Telekommunikation
Tätigkeitszeitraum

3/2021 – 5/2021

Tätigkeitsbeschreibung

Consolidated data via API aggregation, managed gateway operations, enhanced security with TLS bootstrapping and utilized LTE technology (details under NDA)

Eingesetzte Qualifikationen

C, LTE (Telekommunikation), TCP / IP

IT Consultant, Software Developer, System Tester
BDBOS, Vodafone, Nokia, Ericsson, IABG, ..., Berlin
1/2020 – 4/2021 (1 Jahr, 4 Monate)
Telekommunikation
Tätigkeitszeitraum

1/2020 – 4/2021

Tätigkeitsbeschreibung

- Engaged in a collaborative project with the German Agency for Digital Radio of Security Authorities and Organizations (BDBOS), Vodafone, Nokia, Ericsson, German law enforcement and security agencies to perform comprehensive LTE-Advanced testing using Nokia and Ericsson hardware.
- This initiative was crucial for the development of a dedicated LTE-Advanced infrastructure for security agencies, aimed at ensuring network robustness, reliability, and security. Actively performed various testing procedures, analyzing network performance and security protocols.
- In partnership with the IABG, a reputable German analysis and test engineering company, co-authored an insightful report for the BDBOS, encapsulating key findings, recommendations, and methodologies employed during the testing phase.

Eingesetzte Qualifikationen

Radio, C, Node.Js, Cisco (allg.), LTE (Telekommunikation), TCP / IP, Golang

Lead Software Developer
Kundenname anonymisiert, Berlin
12/2019 – 8/2021 (1 Jahr, 9 Monate)
Dienstleistungsbranche
Tätigkeitszeitraum

12/2019 – 8/2021

Tätigkeitsbeschreibung

- Developed in partnership with industry specialists and analysts, a risk management platform for both private and government sectors.
- This platform adeptly identifies risks across corporate, project, IT, and security sectors.
- It incorporates industry-proven risk analysis capabilities, ensuring comprehensive threat assessment, effective mitigation planning, risk monitoring and reporting.

Eingesetzte Qualifikationen

Amazon Web Services (AWS), Node.Js, Test Automation, Vue.Js

Lead Software Developer
Kundenname anonymisiert, Berlin
11/2019 – 12/2020 (1 Jahr, 2 Monate)
Medienbranche
Tätigkeitszeitraum

11/2019 – 12/2020

Tätigkeitsbeschreibung

Developed backend and user application for a music collaboration platform, catering to professionals, labels, brands and events.

Eingesetzte Qualifikationen

Amazon Web Services (AWS), Go (Programmiersprache), Apache Kafka, Kubernetes, Mongodb, Nginx

Lead Software Developer, Infrastructure Operator | Location-based Services for Public Safety (KATWARN international)
Fraunhofer FOKUS - Spinoff TURM Solutions, Berlin
10/2019 – 6/2020 (9 Monate)
Innere und Äußere Sicherheit
Tätigkeitszeitraum

10/2019 – 6/2020

Tätigkeitsbeschreibung

Responsible for further development and the cross-border infrastructure of KATWARN, hessenWARN and EUWARN warning systems used by the European Commission, ensuring Commission's internal and cross-border security. Collaboration with the EU Commission's Join Research Centre Ispra on a Tsunami alerting prototype, with dedicated focus on hardware-to-user notification process.


Eingesetzte Qualifikationen

Node.Js

Software Developer, Infrastructure Operator | Location-based Services for Public Safety
Fraunhofer FOKUS, Berlin
1/2018 – 9/2019 (1 Jahr, 9 Monate)
Innere und Äußere Sicherheit
Tätigkeitszeitraum

1/2018 – 9/2019

Tätigkeitsbeschreibung

Backend and interface developer for KATRETTER, a service innovated from the BMBF-backed ENSURE research project, facilitating the rapid coordination of volunteers by rescue departments like the Berlin Fire Department. Utilizing the KATWARN system's technology, KATRETTER ensures prompt alerting of volunteers, tailored to their skills, for timely interventions in emergencies, such as cardiovascular incidents, bridging the gap before professional aid arrives.


Eingesetzte Qualifikationen

Node.Js

Software Developer, Infrastructure Operator | Location-based Services for Public Safety

Fraunhofer FOKUS, Berlin
9/2015 – 1/2018 (2 Jahre, 5 Monate)
Innere und Äußere Sicherheit
Tätigkeitszeitraum

9/2015 – 1/2018

Tätigkeitsbeschreibung

Successfully arranged KATWARN's transition from a monolithic structure to a micro-services architecture. Developed and managed services, pipelines, databases and notification systems. Launched the second version of KATWARN's administrative and alert management system for national safety agencies, federal sectors and private enterprises.


Eingesetzte Qualifikationen

Node.Js

Research Assistant - Software Developer, Infrastructure Operator | Location-based Services for Public Safety

Fraunhofer ISST, Berlin
4/2012 – 9/2015 (3 Jahre, 6 Monate)
Innere und Äußere Sicherheit
Tätigkeitszeitraum

4/2012 – 9/2015

Tätigkeitsbeschreibung

Research Assistant in software development for location-based services, specializing in backend development and infrastructure management for WIND and the KATWARN national warning system. Led the design and integration of information models, event notification systems, (micro-)frontends and REST APIs while also mentoring interns. Played a pivotal role in enhancing user application UX/UI, including development, design and A/B testing.

On October 30th, 2013, KATWARN was chosen from amongst 1.000 candidates and awarded for “A Place of Excellence in the Land of Ideas” - an initiative aimed at promoting Germany as a location for industry and trade by the federal Government and Federation of German Industry (BDI).


Eingesetzte Qualifikationen

Node.Js

Ausbildung

IT specialist for application development
Ausbildung
Fraunhofer ISST
2009

Über mich

Expertise

Development

A major aspect of my enthusiasm is in the development of diverse software.
Daily, I am committed to engineering modular and clean code that undergoes stringent testing for clarity and robustness.
Attention to reliability, safety and performance.


Interface Design

I combine aesthetic finesse with technical expertise.
With 20 years of experience, I have a strong foundation in web and user application design.


Design-Thinking & UX

By using agile approaches such as Design-Thinking, we can collaborate effectively with stakeholders to determine requirements, resolve any uncertainties and misconceptions.


Architecture

A robust architecture is foundational to what I term "technological success.
Drawing from past experiences, contemporary best practices, and the project's objectives, I advise tech guidelines that ensure scalability, simplicity, and enduring performance.


Infrastructure

Within today's tech landscape, I strongly embrace the DevOps philosophy.
Developers should be intimate with the infrastructure of their applications and maintain a tight collaboration with field specialists, such as those in security, database and message brokers, to ensure top-tier service delivery.


Monitoring

With a background in design, notably UI/UX, I care for constant improvement and usability.
I believe that each developer should closely monitor their services.


Technology

Consistently, I immerse myself in new tech, but also appreciate time-tested solutions. My chosen stack emphasizes widely-adopted, reliable tools. A brief list is provided below.

AWS
C
Go
Node
Kafka Kubernetes
Terraform
JS/TS
GraphQL
Rust
Python
BSD/Linux
CI/CD
Wireshark
Burp
gdb
vi
Github/Gitlab
Photoshop


Entrepreneurship

I initiated the development of a Music Collaboration Service platform, designed to streamline project collaboration, discovery, and management among music professionals, labels, brands and agencies.
This project has attracted interest from several companies in Berlin, showcasing its potential to markedly enhance operational efficiency within the music industry.
With the support of the Media Innovation Center Babelsberg (MIZ) and University of Potsdam,´the project received a significant boost.
Currently, the development is on hold by my discretion as I explore future plans.

Persönliche Daten

Sprache
  • Deutsch (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
National
Arbeitserlaubnis
  • Europäische Union
Home-Office
bevorzugt
Profilaufrufe
215
Alter
33
Berufserfahrung
15 Jahre und 7 Monate (seit 04/2009)
Projektleitung
6 Jahre

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