Nenad Tomasic - Contractor

Q: Where is Nenad based?

Nenad is based in Spreitenbach, Switzerland .

Q: What languages does Nenad speak?

Nenad speaks the following languages: German (Native), Croatian (Native), English (Advanced), French (Advanced), Italian (Intermediate), Spanish (Elementary) .

Q: How many years of experience does Nenad have?

Nenad has at least 26 years of experience. During this time, Nenad has worked in at least 4 different roles and for 18 different companies . The average length of individual experience is 1 year and 3 months . Note that Nenad may not have shared all experience and actually has more experience.

Q: What is Nenad's latest experience?

Nenad's most recent position is Contractor at Swisscom .

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

In recent years, Nenad has worked for Swisscom , SIX Group , and ETH Zurich .

Q: Which industries is Nenad most experienced in?

Nenad is most experienced in industries like Banking and Finance , Information Technology (IT) , and Government and Public Administration . Nenad also has some experience in Education , Healthcare , and Insurance .

Q: Which business areas is Nenad most experienced in?

Nenad is most experienced in business areas like Information Technology (IT) , Research and Development (R&D) , and Business Intelligence . Nenad also has some experience in Product Development , Finance , and Project Management .

Q: Which industries has Nenad worked in recently?

Nenad has recently worked in industries like Banking and Finance , Healthcare , and Government and Public Administration .

Q: Which business areas has Nenad worked in recently?

Nenad has recently worked in business areas like Information Technology (IT) , Business Intelligence , and Research and Development (R&D) .

Recommended expert

Spreitenbach, Switzerland

Experience

Sep 2022 - Present

3 years 6 months

Zürich, Switzerland

Contractor

Swisscom

SAP Data Designer ETL, SQL Server, Docker for PharmaSuisse Data Warehouse Application (Application Manager and Developer)
SAP Business Objects, ABAP on SAP HANA for the Police of the Canton of Bern (Application Manager and Developer)
Avaloq Connectors to SAP BW for Banque Cantonale de Fribourg

Oct 2021 - Aug 2022

11 months

Zürich, Switzerland

Contractor

Swisscom

Openshift, Grafana, Kafka, Splunk, MariaDB, Postgres, Influx DB, Linux and Openshift operations and maintenance for the Custodigit Trading Crypto Application for the Sygnum Bank as 2nd Level Support

May 2021 - Sep 2021

5 months

Zürich, Switzerland

Contractor

SIX Group

Python programming, Windows PowerShell, Scala, Postgres DB for index calculation
Scala/Postgres backend coding on Scalatra framework for web application displaying a livestream video from an Android app, bidirectional with voice, including UI testing with Selenium and Python

Jun 2020 - Nov 2020

6 months

Lenzburg, Switzerland

Contractor

Finnova AG

Scala programming with AKKA framework for new services (WebSockets) around Finnova Core Banking Suite, with interfaces to Elasticsearch, Postgres, Kafka
Openshift deployments with Jenkins Pipeline and introduction of Selenium testing with Python on Selenium Grid

Jan 2019 - Dec 2019

1 year

Contractor

AXA Winterthur

Migration of JBoss with Java Swing frontend into the cloud (Azure, AWS) of the backend with Red Hat, Openshift
DB2 engineering, Artifactory, Openshift deployments with Jenkins Pipeline (CI)

Oct 2018 - Aug 2021

2 years 11 months

Student

ETH Zurich

Computational Quantum Physics (C++, Python with ML Keras, PyTorch)
Combinatorial Optimization, Operations Research (Python)
Statistical Modelling, Applied Linear Models (R)
Numerical Analysis for Partial Differential Equations (Matlab)

May 2018 - Oct 2018

6 months

St. Gallen, Switzerland

Contractor

Raiffeisen Bank

Cyber security in an e-banking application, including PL/SQL, SAP HANA, C++ with the Qt framework, JavaScript
Simulation of attacks to identify their fingerprint and characteristics

Jun 2016 - Apr 2018

1 year 11 months

Zürich, Switzerland

Contractor

Credit Suisse

Technical project leader for an offshore team in India (Scrum)
PL/SQL, shell and Python scripting on Linux (Red Hat) for a data warehouse application in the treasury department
ETL with Informatica, responsible for Splunk and Jenkins continuous integration on Linux Red Hat, migration to TeamCity
Created a virtual environment for developers in VMware with a build process, introduced RPM packaging and Splunk

Apr 2016 - Jun 2016

3 months

Private Project

Nov 2015 - Apr 2016

6 months

Bern, Switzerland

Contractor

Federal Office for Informatics

PL/SQL coding for a legacy application on Solaris for the federal statistical office
Simplifying legacy PL/SQL code full of global variables, with some procedures over 4000 lines each

Jul 2015 - Oct 2015

4 months

Zürich, Switzerland

Contractor

AdNovum Informatik

Support of the TWINT application in production using PL/SQL, Oracle, shell scripting, Linux
Integration of Coop and Post in TWINT, leading and assisting a new ETH graduate in Oracle databases and PL/SQL

Apr 2014 - Jun 2015

1 year 3 months

Bern, Switzerland

Contractor

Bundesamt für Informatik

General consulting and programming (PL/SQL, Unix)
Migration of scheduling system into Oracle Jobs Scheduler

Sep 2010 - Mar 2014

3 years 7 months

Zürich, Switzerland

Contractor

Credit Suisse

Java coding for J2EE WebLogic application with JSF, replacing two legacy Java applications into one for access to personal account on Unix servers
Data migration from two DB2 databases to one Oracle schema without errors, programming interfaces like LDAP and Control-SA, extensive sudo configurations
PL/SQL and shell scripting for exposure analytics calculation
Created a build system in a virtual box for each developer, introducing continuous integration, packaging for Solaris, migration from Redwood JCS to Control-M

Sep 2008 - Apr 2010

1 year 8 months

Bern, Switzerland

Contractor

SBB

Web application DAZU on GlassFish J2EE server for ETCS (European Train Control System) using Oracle, Spring MVC, JPA
Performance gains using Explain Plan (query returned data in 5s instead of 30s)

Jan 2008 - Jul 2008

7 months

Zürich, Switzerland

Contractor

Zürcher Kantonalbank

Java and C++ for currency data from SAP, Avaloq, Reuters, host interfaces sending all data to SeeBeyond EAI

Feb 2007 - Nov 2007

10 months

Basel, Switzerland

Contractor

SBB Cargo

Backend Java/J2EE coding with Oracle TopLink, WebSphere, PL/SQL, Eclipse RCP client
Performance improvements of SQL queries in Project POLAR (planning of cargo, routes and train journey) by optimizing with Explain Plans

Jan 2004 - Dec 2007

4 years

Zürich, Switzerland

Consultant

e3 AG

Shell scripting, packaging Solaris/AIX, Unix system engineering, Oracle 9 DBA, MQ Series, Tivoli
Workflow programming with MQ Workflow, J2EE, WebLogic, Control-SA
EAI programming with SeeBeyond ICAN 5 for Vontobel bank with interfaces to Avaloq and SAP
Automated migration of 1000+ UNIX servers of Credit Suisse to internal UACS security standard via deployment of a custom Solaris package on each server

Jan 2002 - Dec 2003

2 years

Zürich, Switzerland

Engineer

Teconomic AG

Java, Oracle 8, AIX 4, XSLT for backend insurance application (Riester pension) for Winterthur Insurance
Standard Java coding and SQL query improvements for different business rules

Jan 2002 - Dec 2002

1 year

Zürich, Switzerland

Student

Seminar for Applied Mathematics

C++ with STL and MPI on Solaris 8 for library Concepts for numerical computations (finite elements)

Jan 2000 - Dec 2002

3 years

Zürich, Switzerland

Engineer

AdNovum AG

C++ and CORBA on Solaris, DB2, Oracle for an intranet application for UBS
C programming with PKCS#11 API integration into OpenSSL on Solaris and Windows NT, testing on smartcards and multiple platforms

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 Banking and Finance (16 years), Information Technology (9 years), Government and Administration (5 years), Education (4 years), Healthcare (3.5 years), and Insurance (3 years).

Banking and Finance

Information Technology

Government and Administration

Education

Healthcare

Insurance

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 (24 years), Research and Development (4 years), Business Intelligence (3.5 years), Product Development (2.5 years), Finance (2 years), and Project Management (2 years).

Information Technology

Research and Development

Business Intelligence

Product Development

Finance

Project Management

Skills

C/c++
Java
Pl/sql
R
Python
Clojure
Scala
Unix/linux Engineering
Oracle
Db2
Postgresql
Shell Scripting
Elasticsearch
Javascript
Kubernetes
Tensorflow
Pytorch
Sap Hana
Abap
Sql Server
Kafka

Languages

German

Native

Croatian

Native

English

Advanced

French

Advanced

Italian

Intermediate

...and 1 more

Education

Oct 2018 - Jun 2021

ETH Zürich

MSc ETH in Applied Mathematics · Applied Mathematics · Zürich, Switzerland

Oct 1995 - Jun 2000

ETH Zürich

Master of Science ETH in Mathematics · Mathematics · Zürich, Switzerland

Oct 1994 - Jun 1995

ETH Zürich

Computer Science · Zürich, Switzerland

Certifications & licenses

Certified Java Developer

Certified Java Programmer

Certified Solaris 8 System Administrator

Oracle Certified Associate Programmer PL/SQL 9i

Oracle Certified Professional DBA 9i

Profile

Created

June 2024

Last Update

July 2025

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Frequently asked questions

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

Where is Nenad based?

Nenad is based in Spreitenbach, Switzerland.

What languages does Nenad speak?

Nenad speaks the following languages: German (Native), Croatian (Native), English (Advanced), French (Advanced), Italian (Intermediate), Spanish (Elementary).

How many years of experience does Nenad have?

Nenad has at least 26 years of experience. During this time, Nenad has worked in at least 4 different roles and for 18 different companies. The average length of individual experience is 1 year and 3 months. Note that Nenad may not have shared all experience and actually has more experience.

What roles would Nenad be best suited for?

Based on recent experience, Nenad would be well-suited for roles such as: Contractor, Student, Consultant.

What is Nenad's latest experience?

Nenad's most recent position is Contractor at Swisscom.

What companies has Nenad worked for in recent years?

In recent years, Nenad has worked for Swisscom, SIX Group, and ETH Zurich.

Which industries is Nenad most experienced in?

Nenad is most experienced in industries like Banking and Finance, Information Technology (IT), and Government and Public Administration. Nenad also has some experience in Education, Healthcare, and Insurance.

Which business areas is Nenad most experienced in?

Nenad is most experienced in business areas like Information Technology (IT), Research and Development (R&D), and Business Intelligence. Nenad also has some experience in Product Development, Finance, and Project Management.

Which industries has Nenad worked in recently?

Nenad has recently worked in industries like Banking and Finance, Healthcare, and Government and Public Administration.

Which business areas has Nenad worked in recently?

Nenad has recently worked in business areas like Information Technology (IT), Business Intelligence, and Research and Development (R&D).

What is Nenad's education?

Nenad holds a Master in Applied Mathematics from ETH Zürich and a Master in Mathematics from ETH Zürich.

Does Nenad have any certificates?

Nenad has 5 certificates. Among them, these include: Certified Java Developer, Certified Java Programmer, and Certified Solaris 8 System Administrator.

What is the availability of Nenad?

Nenad is immediately available full-time for suitable projects.

What is the rate of Nenad?

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