Mathias Dürrenberger - Independent contractor

Q: Where is Mathias based?

Mathias is based in Feusisberg, Switzerland .

Q: What languages does Mathias speak?

Mathias speaks the following languages: German (Native), French (Native), English (Advanced), Spanish (Intermediate), Italian (Intermediate), Portuguese (Intermediate) .

Q: How many years of experience does Mathias have?

Mathias has at least 36 years of experience. During this time, Mathias has worked in at least 3 different roles and for 14 different companies . The average length of individual experience is 2 years and 3 months . Note that Mathias may not have shared all experience and actually has more experience.

Q: What is Mathias's latest experience?

Mathias's most recent position is Independent contractor at Allianz-Technology .

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

In recent years, Mathias has worked for Allianz-Technology , Julius Bär , Bank for International Settlements Basel , and Self Employed .

Q: Which industries is Mathias most experienced in?

Mathias is most experienced in industries like Banking and Finance , Information Technology , and Media and Entertainment . Mathias also has some experience in Insurance .

Q: Which business areas is Mathias most experienced in?

Mathias is most experienced in business areas like Information Technology , Product Development , and Research and Development . Mathias also has some experience in Finance and Business Intelligence .

Q: Which industries has Mathias worked in recently?

Mathias has recently worked in industries like Insurance , Banking and Finance , and Information Technology .

Q: Which business areas has Mathias worked in recently?

Mathias has recently worked in business areas like Information Technology and Product Development .

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Feusisberg, Switzerland

Experience

Oct 2023 - Jun 2025

1 year 9 months

Independent contractor

Allianz-Technology

Developed a massive web application for second pillar retirement insurances (Swiss BVG, Kollektivleben) with over 1000 web pages using an in-house model language and Angular for front-end and back-end
Fixed bugs in the code generator and enhanced and re-engineered the application
Built an automated testbed
Implemented PDF document generation with XML and Thunderhead
Resolved issues due to the switch to Java 21
Replaced middleware server for insurance base data (customers, contracts) using Java/Spring, REST, OpenAPI, Docker, Kubernetes, OpenShift, Azure CI/CD pipeline, Jenkins, and GitHub

Nov 2021 - Jan 2023

1 year 3 months

Independent contractor

Julius Bär

Developed a web application for managing discounts in client pricing using Java, Oracle, React, Spring, OAuth2, Kubernetes, Azure CI/CD pipeline, and Helm Charts
Implemented user roles with OAuth2 and fixed errors in Helm charts
Maintained and enhanced Temenos Data Source as the central financial data repository on Linux using Bash, Oracle, Python, Java, JBoss, TDS, and Octopus

Jun 2021 - Oct 2021

5 months

Independent contractor

Bank for International Settlements Basel

Worked on a new IT landscape based on OpenShift, Docker, Kubernetes, and Kafka
Integrated into BlackRock Aladdin
Developed .NET Core and Razor applications running in Linux containers
Built infrastructure for file processing, data ingestion, and web applications on Windows and Linux Docker containers using .NET Core, Razor Pages, Kafka, SFTP, REST, SQL Server, Git, XML, OpenShift, Docker, and Kubernetes

Jan 2021 - May 2021

5 months

Self Employed

Worked on web projects for training purposes using Java, Spring Boot, MySQL, HTML, JavaScript, and REST web services
Set up a SPA website running on a Raspberry Pi Zero W
Followed up front-end implementations in Angular, React, and Vue

Mar 2016 - Dec 2020

4 years 10 months

Independent contractor

Credit Suisse

Maintained and enhanced an in-house application landscape (C#/WinForms/MS SQL/Oracle/LaTeX, ~200 000 lines of code) for managing fixed income and currency overlay portfolios with 11 billion AUM
Managed portfolio optimization for duration density, liability benchmarks, cash-flow matching, and hedges
Loaded daily portfolio data, simulated trades, and executed them via Charles River link
Produced HTML, Excel, and PDF reports
Added interfaces to Reuters FxAll (FIX) and BlackRock Aladdin (XML & REST) during transition
Served as software engineer, requirements engineer, and support engineer using .NET, .NET Core, WinForms, SQL Server, Oracle, web services, SVN, Git, XML, FIX, Bloomberg API, Bloomberg back office files, REST, HTTP, HTTPS, and BlackRock Aladdin

Feb 2013 - Nov 2015

2 years 10 months

Independent contractor

Swiss Re

Developed and debugged a platform for casualty reinsurance premium calculation in an R&D team
Designed a data model with 300+ Oracle tables
Built a Java webservice server (SOAP & REST) with 2000+ classes and a C#/WinForms fat client
Parallelized main calculations for multithreading and DataSynapse GridServer
Performed DB analysis and enhancements, Java and C# development, and debugging
Served as software engineer and requirements engineer using Java, Oracle, web services, C#, SVN, Git, and XML

Nov 2010 - Jul 2012

1 year 9 months

Independent contractor

Credit Suisse

Insourced public web applications and built an internal development platform on Solaris
Created scripts for Solaris packages
Performed database and performance analysis
Used WebLogic, Eclipse, Maven, Subversion, Tomcat, MySQL, Oracle, Java, C++, and HTML

Jan 2006 - Dec 2009

4 years

Independent contractor

Credit Suisse

Maintained, debugged, and developed a central FX rate delivery infrastructure with 20 multithreaded C++ and Java processes
Provided third level support for high-visibility applications dependent on FX rates
Implemented FTPS protocol, Java servlets for data maintenance, and decommissioned the system by porting components into a Java infrastructure
Performed DB versioning, lifecycle scripting, DB analysis, enhancements, PL/SQL debugging, and performance tuning using Oracle, PL/SQL, C++, Java, XSLT, Perl, UNIX, MQ Series, Corba, TLS/SSL, ClearCase, CVS, WebLogic, and HTML

Jan 2004 - Dec 2006

3 years

Independent contractor

UBS AG Investment Bank

Maintained and enhanced an FX structured products settlement system with VB GUI, C++ and Java server processes, and Oracle/PL/SQL database
Processed exotic options, validated data via MQ, emitted booking messages, and generated order confirmations
Added reporting features, performed DB analysis, enhancements, PL/SQL debugging, performance tuning, and troubleshooting using Oracle, PL/SQL, Visual Basic, C++, Java, XML, XSL-FO, UNIX, MQ Series, and ClearCase

Jan 2002 - Dec 2003

2 years

Independent contractor

UBS Warburg AG

Developed middleware for a real-time FX trading system to validate, auto-fill, and secure data under Swiss/international banking rules
Enabled business logic flexibility via XML layer and configurable external interfaces (Corba, MQ)
Used C++, UNIX, MQ Series, Corba, Perl, Java, and ClearCase

Jan 2001 - Dec 2002

2 years

Independent contractor

JP Morgan Chase SA

Provided application support and release maintenance for the Topaz real-time trading system covering FX, fixed income, equities, and options lifecycle
Troubleshot production issues for VB GUI client, C++ middleware, and Sybase database with MQ links
Used C++, Visual Basic, Transact-SQL, Windows NT, AIX, Solaris, Sybase, and MQ Series

Jan 1999 - Dec 2001

3 years

Independent contractor

UBS AG Zürich

Re-engineered a portfolio performance calculation application to improve error reporting and stability under NT (development) and UNIX (production)
Performed C programming attached to Oracle via OCI and PL/SQL package, DB analysis, enhancements, and performance tuning

Jan 1997 - Dec 1999

3 years

Independent contractor

Lloyds Bank PLC

Prototyped and maintained banking applications for reporting, performance calculation, and CRM using C++/MFC
Migrated systems for EUR and Y2K compatibility
Developed tools for portfolio data management and graphical allocation display
Tracked software and data issues in performance calculation tools

Jan 1996 - Dec 1997

2 years

Independent contractor

JPMorgan SA

Maintained and rewrote banking software, including a prototype database interface from AS/400 to SQL Anywhere
Evaluated Sybase SQL Anywhere for data feed from Olympic to MS Access
Worked on internal performance reporting and stock price update tools using MS Access, VB, and SQL Anywhere

Jan 1996 - Dec 1996

1 year

Independent contractor

HIWARE AG

Developed a linker and object file dump utility and rewrote an assembler to support the ELF object file format
Ensured tools ran on Unix and Windows using Visual C++, Windows, and UNIX

Jan 1987 - Dec 1995

9 years

Various technical roles

Various

Performed technical developments in data acquisition (RS-232, A/D converter, IEEE 488), filtering, and signal analysis
Designed GUIs (Win32, X11, XView) and graphics programming (texture mapping)
Developed hardware for IBM PC bus (quadrature decoder) and radio broadcasting ‘jukebox’

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Banking and Finance, Information Technology, Media and Entertainment, and Insurance.

Banking and Finance

Information Technology

Media and Entertainment

Insurance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Research and Development, Finance, and Business Intelligence.

Information Technology

Product Development

Research and Development

Finance

Business Intelligence

Skills

Programming Languages: Java, C#, C/c++, Sql, Pl/sql, T-sql, Html, Gnu R, Python
Environments: Windows, Unix, Oracle, Sybase, Ms Sql Server
Pragmatic Approach, Client Oriented
Extensive Experience In Fx: Hedging, Trading, Options, Exotics

Languages

German

Native

French

Native

English

Advanced

Spanish

Intermediate

Italian

Intermediate

...and 1 more

Education

Oct 1983 - Jun 1987

Geneva University

Bachelor in Computer Science · Computer Science · Geneva, Switzerland

Oct 1980 - Jun 1981

EPFL Lausanne

Electrical Engineering · Lausanne, Switzerland

Oct 1977 - Jun 1980

High school in Münchenstein/BL

Cantonal Matura, Type C · Münchenstein, Switzerland

...and 1 more

Certifications & licenses

CAS in Computer Science

ETH Zurich

Statistics

Experience

Total positions 16

Experience in Banking and Finance 22 y

Avg length 2 y 7 m

Longest experience 8 y 11 m

Expertise

Recent roles Independent contractor, Self Employed, Various technical roles

Main industries Banking and Finance, Information Technology, Media and Entertainment

Main business areas Information Technology, Product Development, Research and Development

Qualifications

Highest degree Bachelor

Certifications earned 1

Profile

Created

October 2025

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Frequently asked questions

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

Where is Mathias based?

Mathias is based in Feusisberg, Switzerland.

What languages does Mathias speak?

Mathias speaks the following languages: German (Native), French (Native), English (Advanced), Spanish (Intermediate), Italian (Intermediate), Portuguese (Intermediate).

How many years of experience does Mathias have?

Mathias has at least 36 years of experience. During this time, Mathias has worked in at least 3 different roles and for 14 different companies. The average length of individual experience is 2 years and 3 months. Note that Mathias may not have shared all experience and actually has more experience.

What roles would Mathias be best suited for?

Based on recent experience, Mathias would be well-suited for roles such as: Independent contractor, Self Employed, Various technical roles.

What is Mathias's latest experience?

Mathias's most recent position is Independent contractor at Allianz-Technology.

What companies has Mathias worked for in recent years?

In recent years, Mathias has worked for Allianz-Technology, Julius Bär, Bank for International Settlements Basel, and Self Employed.

Which industries is Mathias most experienced in?

Mathias is most experienced in industries like Banking and Finance, Information Technology, and Media and Entertainment. Mathias also has some experience in Insurance.

Which business areas is Mathias most experienced in?

Mathias is most experienced in business areas like Information Technology, Product Development, and Research and Development. Mathias also has some experience in Finance and Business Intelligence.

Which industries has Mathias worked in recently?

Mathias has recently worked in industries like Insurance, Banking and Finance, and Information Technology.

Which business areas has Mathias worked in recently?

Mathias has recently worked in business areas like Information Technology and Product Development.

What is Mathias's education?

Mathias holds a Bachelor in Electrical Engineering from EPFL Lausanne.

Does Mathias have any certificates?

Mathias has 1 certificate: CAS in Computer Science.

What is the availability of Mathias?

Mathias is immediately available for suitable projects.

What is the rate of Mathias?

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