William Nguyen - Senior/Lead Business Analyst & AI Workflow Consultant | Requirements Engineering | BI | Workflow Automation

Q: Where is William based?

William is based in Berlin, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does William speak?

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

Q: How many years of experience does William have?

William has at least 7 years of experience. During this time, William has worked in at least 11 different roles and for 11 different companies . The average length of individual experience is 1 year and 8 months . Note that William may not have shared all experience and actually has more experience.

Q: What is William's latest experience?

William's most recent position is Senior Business Analyst/Requirements Engineer at Finanzen.Net/Finanzen.Zero .

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

In recent years, William has worked for Finanzen.Net/Finanzen.Zero , Horvath & Partner GmbH , German Bank , OCOTEN Engineering , and Otto Klumpp GmbH .

Q: Which industries is William most experienced in?

William is most experienced in industries like Banking and Finance , Professional Services , and Education . William also has some experience in Information Technology , Manufacturing , and Retail .

Q: Which business areas is William most experienced in?

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

Q: Which industries has William worked in recently?

William has recently worked in industries like Banking and Finance , Professional Services , and Education .

Q: Which business areas has William worked in recently?

William has recently worked in business areas like Information Technology , Business Intelligence , and Finance .

Recommended expert

Berlin, Germany

Check rate

Experience

Jan 2026 - Present

7 months

Karlsruhe, Germany

Remote

Senior Business Analyst/Requirements Engineer

Finanzen.Net/Finanzen.Zero

Analysis of complex business processes and end-to-end user journeys in digital product and platform environments
Gathering, structuring, and prioritizing business and technical requirements (Functional / Non-Functional Requirements)
Translating business goals into actionable requirements, user stories, and acceptance criteria
Conducting stakeholder interviews, workshops, and reviews with business teams, IT, UX, and management
Creating and maintaining requirement artifacts (BRD, FRD, user stories, process models, decision papers)
Ensuring consistency between business needs, technical implementation, and product vision
Close collaboration with development teams to clarify business questions during implementation
Support with impact analyses (A/B tests), change requests, and scope management
Quality assurance of implemented requirements including acceptance criteria and business testing
Advising on the further development of product strategy and roadmap structure
Prioritizing backlog items based on business value
Defining and sharpening product goals, KPIs, MVP definition, and other success metrics
Evaluating new features, tools, and initiatives from a user and business perspective
Facilitating decision-making between business, product, and technology
Supporting go-to-market considerations and product positioning
Sparring partner for product and stakeholder decisions at management level
Dashboard creation, data modeling, BI report administration, and data analysis in Power BI

Jan 2026 - Mar 2026

3 months

Berlin, Germany

Remote

AI-Automation Consultant

Horvath & Partner GmbH

Analysis of ongoing customer projects (goals, scope, pain points, maturity level)
Derivation of suitable successor solutions based on defined solution clusters
Structured explanation of the business value for each cross-selling recommendation
Development of a rule-based decision and prioritization model
Creation of clearly worded, sales-oriented arguments (trusted advisor logic)
Building reusable templates, meta-prompts, and decision logics
Quality assurance in terms of consistency, relevance, and feasibility
Close coordination with project management, sales, and management
Dynamics CRM triggers and email automation through Follow-Up Solutions

Apr 2025 - Dec 2025

9 months

Germany

Remote

Product Owner Frontend

German Bank

Frontend lead business analyst for implementing the Payback feature in the banking app
Design and modeling of processes (chargeback, return, payout, system communication, etc.)
API coordination and alignment
Stakeholder management with IT, business teams, and backend
Roadmapping, backlog management, release planning
Testing and documentation
Requirements management and requirements analysis
Coordination and business/technical alignment with business, system, and data teams
Tools: Confluence, JIRA, Figma, Miro, draw.io

Dec 2024 - Feb 2025

3 months

Germany

Business Consultant & Market Analyst

OCOTEN Engineering

Project management and stakeholder management
Market entry analysis for Southeast Asia for electric scooters (sourcing and sales)
Creation of a KPI dashboard for company management (HR and financial data)
Development of a modular tool to quantify a market entry ranking
Price and scenario analysis
Tools: MS Office, Power BI

Jul 2024 - Feb 2025

8 months

Germany

BI Consultant (Data & Business Analyst & BI Developer)

Otto Klumpp GmbH

Project management and stakeholder management for QlikSense in cooperation with Studicon
Data modeling
Dashboard creation and visualization
Data analysis (HR, sales, financial, and production data)
Data administration and management for QlikSense
Coaching end users
Creating requirements
Tools: Oracle SQL Developer, QlikSense, ABAS, Microsoft SQL, BAPTECH, PROSES

Dec 2023 - Mar 2025

1 year 4 months

Germany

Instructor

DATASMART POINT

Teaching and training in AI and machine learning
Training in Power BI
Training in business analytics and data analytics
Training in statistics
Training in data interfaces and data collection
Training in databases (SQL and NoSQL)
Data analysis and visualization with Python and Excel
Tools: Power BI, Excel, Python, Postgres, SQLite

Jun 2023 - Jun 2024

1 year 1 month

Germany

Data Coach / Data Analyst

Hanseatic Statistics

Coaching and support for students and professors in statistical data analyses
Scripting data analyses
Code review
Concept development for statistical papers
Interpretation of statistical results
Support for clients in medicine, business, psychology, and social sciences
Tools: R, SPSS Statistics, Jamovi, JASP, Python

Nov 2022 - Apr 2023

6 months

Germany

Management Consultant

Growth Levers Consulting GmbH / Growth Levers VN

Market research and market analysis for Babynation/MATIDA
Rollout of an e-contract system (Viettel)
Support and acquisition of partners and freelancers
Building an accounting structure and guideline
Competitive analysis
Business case analysis
Translation and intercultural consulting
Networking in Vietnam's tech hub and medical hubs
Founding planning, organization, and administration of a Vietnamese entity
Tools: MS Office, Google Office/Analytics, Facebook Ads, Power BI

Feb 2021 - Apr 2025

4 years 3 months

Germany

Senior/Lead Business & Data Analyst

Deutsche Kreditbank AG

Lead Business Analyst for deposit protection reporting and data migration
Data enrichment of the access layer for deposit protection reports
Lead Business Analyst for integrating securities data from WP-Dynamic into Abacus
Creating HGB and IFRS reports from WP-Dynamic for securities
Lead Business Analyst for resolution processing (Valuation Data Set)
Development of SQL reports based on Own-Funds Exposure
Implementation and support for the transformation of Abacus reporting
Data mapping and data analysis of various source systems into the DWH
Financial and business analysis of requirements for implementation
Debugging, business and technical testing of implementations
Advising the Finance-Tech team on solutions in finance, regulation, and reporting
Data migration of accounting into BayernLB's SAP accounting system
Development of a Python script to detect and report incorrect postings
Automated data analysis and reporting of new account notifications
Project organization, user stories, case analysis, stakeholder analysis
Stakeholder management as well as business and technical alignment with business, system, and data teams
Testing and documentation
Tools: Oracle, AB Initio BRE, OSPlus, Access, Oracle SQL Developer, MS Power BI, SAP Power Designer, MicroStrategy, RStudio, WP-Dynamics, WP-Bilanz, JIRA, Confluence, Microsoft Visual Studio Code, Python

Oct 2019 - Jan 2021

1 year 4 months

Frankfurt, Germany

Associate - Financial Services (Risk Banking/Trading & Treasury)

KPMG

Mapping and data analysis of input data from various source systems for the simulation of NII and Delta-NII (DZ Bank)
Building a SQL-based data quality framework for the IRRBB database
Business testing of technical implementation projects and data migrations
Development of SQL reporting macros and dashboards, as well as training of users
Support in the design and implementation of an Economic Risk Capital Model for residential mortgage loans (bootstrapping and Monte Carlo simulation) (Commerzbank AG)
Creation of an automated document overview structure
Data analysis, validation, and evaluation of LCR effects from the Abacus system (Commerzbank AG)
Tools: MS Office, Oracle SQL Developer, Squirrel, Notepad++, JIRA, Tableau, Murex, VBA, MS Power BI

Oct 2018 - Dec 2018

3 months

Dresden, Germany

International Strategy Consultant

Dreberis GmbH

Market entry projects for infrastructure, water/wastewater management, education, Industry 4.0, and smart city projects in Eastern Europe
Market research and market analysis
Project documentation
Management consulting on the regulations of the individual target countries
Coordination of business trips and meetings with potential partner companies

Industry Experience

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

Experienced in Banking and Finance, Professional Services, Education, Information Technology, Manufacturing, and Retail.

Banking and Finance

Professional Services

Education

Information Technology

Manufacturing

Retail

Business Area Experience

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

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

Information Technology

Business Intelligence

Finance

Product Development

Project Management

Research and Development

Skills

Oracle Sql Developer
Eikon Reuters
Squirrel Sql
Osplus
Morning Star Direct
Sap Powerdesigner
Msci Esg-Manager
Jira/Confluence
Ab Initio (Bre+Mhub)
Qliksense
Sap Dw Cloud
Gitbash/Github
Sapbw4/Hana
Anaconda
Spyder Ide
Jupyter Notebook
Microsoft Power Bi
Pyspark
Tableau
Rstudio
Pycharm
Microsoft Vs Code
Wp-Dynamic
Mongodb
Microsoft Sql Server
Redshift (Amazon)
Openai
Chatgpt
Microsoft Copilot
Big Query (Google)
Dbt
Miro
Figma
Sql
Python
Excel
R
Power Query
Dax
Power Pivot
Nosql
Qlik-Scripting

Languages

German

Native

English

Advanced

Vietnamese

Advanced

Spanish

Intermediate

French

Intermediate

...and 1 more

Education

Feb 2018 - Aug 2018

Vilnius Universitetas

Master – Erasmus program, Erasmus program – „Strategic Business Management & Finance“ · Strategic Business Management & Finance · Lithuania

Oct 2016 - Sep 2019

Brandenburgische Universität Cottbus-Senftenberg

Master of Science, M.Sc. in Business Administration – specialization: „Investment & Finance“ and „Market-oriented · Business Administration · Cottbus, Germany

Feb 2014 - Jun 2014

Universita Politecnica delle Marche

Bachelor – Erasmus program, Erasmus program – „International Business & Communication“ · International Business & Communication · Ancona, Italy

...and 1 more

Certifications & licenses

Stock Exchange License (BHV)

Real Estate Agent (IHK)

PowerBI – Microsoft Certification – PL300

Certificate in Intercultural Competencies

Statistics

Experience

Total positions 11

Experience in Banking and Finance 5.5 y

Avg length 11 m

Longest experience 4 y 2 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Senior Business Analyst/Requirements Engineer, AI-Automation Consultant, Product Owner Frontend

Main industries Banking and Finance, Professional Services, Education

Main business areas Information Technology, Business Intelligence, Finance

Qualifications

Highest degree Master

Certifications earned 4

Profile

Created

August 2025

Last Update

July 2026

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Frequently asked questions

Have questions? Find more information here.

William is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.

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

William has at least 7 years of experience. During this time, William has worked in at least 11 different roles and for 11 different companies. The average length of individual experience is 1 year and 8 months. Note that William may not have shared all experience and actually has more experience.

Based on recent experience, William would be well-suited for roles such as: Senior Business Analyst/Requirements Engineer, AI-Automation Consultant, Product Owner Frontend.

William's most recent position is Senior Business Analyst/Requirements Engineer at Finanzen.Net/Finanzen.Zero.

In recent years, William has worked for Finanzen.Net/Finanzen.Zero, Horvath & Partner GmbH, German Bank, OCOTEN Engineering, and Otto Klumpp GmbH.

William is most experienced in industries like Banking and Finance, Professional Services, and Education. William also has some experience in Information Technology, Manufacturing, and Retail.

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

William has recently worked in industries like Banking and Finance, Professional Services, and Education.

William has recently worked in business areas like Information Technology, Business Intelligence, and Finance.

William holds a Master in Strategic Business Management & Finance from Vilnius Universitetas, a Master in Business Administration from Brandenburgische Universität Cottbus-Senftenberg, a Bachelor in International Business & Communication from Universita Politecnica delle Marche and a Bachelor in Business Administration from Universität Bremen.

William has 4 certificates. Among them, these include: Stock Exchange License (BHV), Real Estate Agent (IHK), and PowerBI – Microsoft Certification – PL300.

William is immediately available full-time for suitable projects.

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

To hire William, click the Meet button on the profile to request a meeting and discuss your project needs.