Keying Wu - Freelance Fullstack Developer

Q: Where is Keying based?

Keying is based in Frankfurt am Main, Germany .

Q: What languages does Keying speak?

Keying speaks the following languages: German (Native), Chinese (Native), English (Advanced) .

Q: How many years of experience does Keying have?

Keying has at least 9 years of experience. During this time, Keying has worked in at least 5 different roles and for 4 different companies . The average length of individual experience is 2 years and 10 months . Note that Keying may not have shared all experience and actually has more experience.

Q: What is Keying's latest experience?

Keying's most recent position is Freelance Fullstack Developer at Helaba Invest .

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

In recent years, Keying has worked for Helaba Invest and UniCredit Group .

Q: Which industries is Keying most experienced in?

Keying is most experienced in industries like Banking and Finance and Automotive .

Q: Which business areas is Keying most experienced in?

Keying is most experienced in business areas like Product Development , Information Technology (IT) , and Project Management . Keying also has some experience in Quality Assurance (QA) and Business Intelligence .

Q: Which industries has Keying worked in recently?

Keying has recently worked in industries like Banking and Finance .

Q: Which business areas has Keying worked in recently?

Keying has recently worked in business areas like Information Technology (IT) , Product Development , and Project Management .

Recommended expert

Frankfurt am Main, Germany

Experience

Feb 2023 - Present

3 years 1 month

Frankfurt, Germany

Freelance Fullstack Developer

Helaba Invest

ChatGPT-like AI chatbot with file upload and interaction capabilities, hosted on Azure in Europe to ensure compliance with corporate data privacy regulations
AI-powered legal document processing solution for automating the extraction of tax-related data from complex legal documents, enhancing accuracy of tax liability identification, reducing processing time, and mitigating risk of non-compliance
Asset Manager Service portal (AMS) developed using Angular, Python, Docker, and Oracle DB, serving as a pivotal data catalog to enhance data retrieval efficiency and accuracy
Dynamics 365 Azure integration via custom Azure Functions plugins to align CRM capabilities with unique requirements of an investment institute

Jan 2022 - Sep 2022

9 months

Munich, Germany

Lead Fullstack Developer

UniCredit Group

Led the project team to develop an investment platform for structured products using Java and C#.NET
Automated regression tests by integrating a Jenkins CI/CD pipeline, reducing execution time by 50%
Migrated and rewrote the UI of the issuance platform using Angular and WPF, reimplemented a front-end framework, and maintained a reusable component set

Dec 2019 - Dec 2021

2 years 1 month

Munich, Germany

Senior Fullstack Developer

UniCredit Group

Developed an issuance platform for structured products using C# .NET, Java, Oracle Database, and Angular, issuing 200 million derivative products and executing one million workflow actions daily
Coordinated sprints, retrospective meetings, and daily stand-ups
Communicated with business stakeholders to identify high-level and detailed requirements
Optimized the workflow engine to execute over one million actions daily

Apr 2019 - Nov 2019

8 months

Munich, Germany

Quantitative Business Analyst

DevNet GmbH

Created, analyzed, and validated business requirements, translating them into detailed functional requirements and user stories, and defining acceptance criteria and test cases
Developed complex advancement reports using PL/SQL for trading and sales departments in investment banking
Optimized release and regression tests based on new features of trading and sales applications

Jul 2016 - Mar 2019

2 years 9 months

Munich, Germany

Software Engineer

EVA Fahrzeugtechnik GmbH

Developed dynamic simulation and lifetime estimation tools for high-voltage batteries using MATLAB and Python, leveraging physics-based models and building a comprehensive lithium-ion battery model with Dymola
Automated battery simulation processes and parameter creation using Python multiprocessing pool
Streamlined data management by automating data export and visualization in Excel using VBA

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 (6.5 years) and Automotive (2.5 years).

Banking and Finance

Automotive

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 Product Development (9 years), Information Technology (6 years), Project Management (2 years), Quality Assurance (1.5 years), and Business Intelligence (0.5 years).

Product Development

Information Technology

Project Management

Quality Assurance

Business Intelligence

Summary

Keying is a seasoned full stack developer focused on business outcomes, along with having a solid engineering background. With hands-on experience in all stages of software development, she is a life-long learner, a completionist, and a problem solver. Keying's expertise lies in building MVPs, web apps, enterprise software, web crawlers and REST APIs.

Skills

E L Ovenn § Uum J Sre § Ac | Svguir X Coner X Otnon L S J E ] Oo

Languages

German

Native

Chinese

Native

English

Advanced

Education

Sep 2013 - Feb 2016

TU Braunschweig

Master of Science · Automobile Engineering · Braunschweig, Germany · GPA 4.3/5

Sep 2009 - Aug 2013

Tongji University

Bachelor of Science · Automobile Engineering · Shanghai, China · GPA 4.43/5

Certifications & licenses

CFA Charterholder

Profile

Created

June 2025

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Frequently asked questions

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

Where is Keying based?

Keying is based in Frankfurt am Main, Germany.

What languages does Keying speak?

Keying speaks the following languages: German (Native), Chinese (Native), English (Advanced).

How many years of experience does Keying have?

Keying has at least 9 years of experience. During this time, Keying has worked in at least 5 different roles and for 4 different companies. The average length of individual experience is 2 years and 10 months. Note that Keying may not have shared all experience and actually has more experience.

What roles would Keying be best suited for?

Based on recent experience, Keying would be well-suited for roles such as: Freelance Fullstack Developer, Lead Fullstack Developer, Senior Fullstack Developer.

What is Keying's latest experience?

Keying's most recent position is Freelance Fullstack Developer at Helaba Invest.

What companies has Keying worked for in recent years?

In recent years, Keying has worked for Helaba Invest and UniCredit Group.

Which industries is Keying most experienced in?

Keying is most experienced in industries like Banking and Finance and Automotive.

Which business areas is Keying most experienced in?

Keying is most experienced in business areas like Product Development, Information Technology (IT), and Project Management. Keying also has some experience in Quality Assurance (QA) and Business Intelligence.

Which industries has Keying worked in recently?

Keying has recently worked in industries like Banking and Finance.

Which business areas has Keying worked in recently?

Keying has recently worked in business areas like Information Technology (IT), Product Development, and Project Management.

What is Keying's education?

Keying holds a Master in Automobile Engineering from TU Braunschweig and a Bachelor in Automobile Engineering from Tongji University.

Does Keying have any certificates?

Keying has 1 certificate: CFA Charterholder.

What is the availability of Keying?

Keying is immediately available for suitable projects.

What is the rate of Keying?

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