Maxime Djongoue - Lead Product Manager for E-Invoicing

Q: Where is Maxime based?

Maxime is based in Frankfurt am Main, Germany .

Q: What languages does Maxime speak?

Maxime speaks the following languages: French (Native), German (Advanced), English (Advanced), Japanese (Elementary), Swahili (Elementary) .

Q: How many years of experience does Maxime have?

Maxime has at least 5 years of experience. During this time, Maxime has worked in at least 6 different roles and for 6 different companies . The average length of individual experience is 1 year and 11 months . Note that Maxime may not have shared all experience and actually has more experience.

Q: What is Maxime's latest experience?

Maxime's most recent position is Lead Product Manager E-invoicing & AI at fino data services GmbH .

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

In recent years, Maxime has worked for fino data services GmbH , Sage Group , KFW-Bankengruppe , and Deutsche Telekom AG .

Q: Which industries is Maxime most experienced in?

Maxime is most experienced in industries like Information Technology , Telecommunication , and Banking and Finance . Maxime also has some experience in Automotive and Manufacturing .

Q: Which business areas is Maxime most experienced in?

Maxime is most experienced in business areas like Product Development , Quality Assurance , and Business Intelligence . Maxime also has some experience in Strategy , Project Management , and Information Technology .

Q: What is Maxime's education?

Maxime holds a Master in Business Administration for Engineers from Fernuniversität Hagen , a Bachelor in Electrical and Information Engineering from Technical University of Darmstadt and a Bachelor in Electrical and Information Engineering from RheinMain University of Applied Sciences .

Q: What is the availability of Maxime?

Maxime is immediately available full-time for suitable projects.

Recommended expert

Available

Frankfurt am Main, Germany

Check rate

Experience

Apr 2026 - Present

5 months

Lead Product Manager E-invoicing & AI

fino data services GmbH

Responsible for the concept, planning, and implementation of the product development of GetMyInvoices 2.0 and the subcomponent InvoiceRails
Independent work on all aspects of the project, including concept, specification in tickets, and coordination of developers
Creation, management, and prioritization of tickets to ensure all tasks are completed on time and with high quality
Carrying out and/or coordinating tests and ensuring the proper implementation of the developed features and functionalities
Close collaboration with developers to clarify technical requirements and ensure the implementations match the specifications
Regular reporting on project progress and documentation of key decisions, changes, and risks
Taking on the subject matter lead for all topics around e-invoicing and Peppol, especially in relation to the InvoiceRails component
Internal consulting and knowledge sharing on e-invoicing and Peppol for other teams and departments
Tracking market trends and new developments in e-invoicing and Peppol to continuously adapt the product strategy
Ensuring the long-term scalability and flexibility of the products for future technical and regulatory changes in the e-invoicing area

Oct 2023 - Sep 2025

2 years

Associate Software Product Manager Data & AI

Sage Group

Took the lead in building the company’s Single Source of Truth Data Platform (ARR, Churn, %YoY, Cross-sell, Upsell NPS, P&L, etc.) for business performance and customer behavior across more than 12 products in 6 countries
Conducted data analysis to support decisions in product development and market fit
Led in-depth market analyses, segmentations, and competitive SWOTs to identify new growth opportunities and partner options in payments
Developed and validated use cases for Sage Copilot based on customer needs, market trends, and internal innovation goals
Designed and implemented go-to-market strategies for Sage Copilot and BI reporting features in 4 European markets
Led stakeholder interviews to gather KPIs and OKRs to ensure strategic alignment and success measurement
Developed data-driven business strategies to maximize product potential, with a clear focus on value creation
Responsible for maintaining and prioritizing the product roadmap to ensure focused, user-centered development
Used Design Thinking to drive cross-team innovation and solution-oriented idea generation
Modeled business processes (BPMN) to improve efficiency and traceability
Worked closely with international, cross-functional teams in 6 countries and multiple time zones to synchronize development, rollouts, and feedback
Took on the role of compliance and e-invoicing owner for Sage Active - including regulatory alignment and operational implementation
Co-developed and validated AI features to achieve product-market fit

Jun 2022 - Jun 2023

1 year 1 month

Release Train Engineer & Scrum Master Assistant

KFW-Bankengruppe

Supported an Agile Release Train (ART) in planning, process optimization, and cross-team coordination as part of major digitalization initiatives
Optimized agile processes across multiple teams, resulting in 30% faster software delivery
Responsible for tracking milestones, dependencies, and release cycles within the Agile Release Train (ART)
Developed and implemented process optimization measures based on my thesis "Lead Time Measurement in a German Bank"
Moderated team retrospectives and synchronized planning sessions (PI Planning) to ensure strategic alignment with business goals
Contributed to increased team productivity and cross-functional transparency
Promoted cross-team collaboration with modern communication tools and agile methods

Sep 2021 - Feb 2022

6 months

Release Train Engineer Assistant

Deutsche Telekom AG

Supported an Agile Release Train in planning, quality assurance, and cross-team coordination in a product environment
Helped with the planning of Program Increments (PI) to align development with strategic product goals
Supported retrospectives and reviews to encourage continuous improvement and team performance
Conducted functional tests and UX analyses of digital prototypes with feedback for product improvement
Contributed to cross-team synchronization by using modern tools for virtual collaboration and process alignment
Worked closely with Product Owners and developers to promote product quality and user focus

Oct 2018 - Dec 2019

1 year 3 months

AI Developer – Software Testing & QA

Axxessio GmbH

Tested and evaluated the voice assistant platform "Hallo Magenta" with a focus on user experience, responsiveness, and feature performance
Conducted structured end-user tests and delivered actionable feedback to product and development teams
Developed and trained text-to-speech (TTS) and speech-to-text (STT) models to improve speech recognition
Implemented test automation to increase efficiency in product development
Contributed to product optimization through data analysis and audit processes
Supported product strategy in the context of IoT-based applications, with a focus on voice interfaces and user centricity

Apr 2018 - Sep 2018

6 months

Robotics Developer (Internship)

Invensity GmbH

Designed and implemented sensor solutions for capturing and processing environmental data in real time in the context of autonomous vehicle systems
Integrated computer vision components to improve decision logic and object detection
Architecture and electronics design of advanced robotics solutions
System integration and prototype testing to validate technical feasibility and functionality
Worked at the intersection of software, hardware, and product innovation with a strong focus on safety and reliability

Industry Experience

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

Experienced in Information Technology, Telecommunication, Banking and Finance, Automotive, and Manufacturing.

Information Technology

Telecommunication

Banking and Finance

Automotive

Manufacturing

Business Area Experience

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

Experienced in Product Development, Project Management, Business Intelligence, Strategy, Quality Assurance, and Information Technology.

Product Development

Project Management

Business Intelligence

Strategy

Quality Assurance

Information Technology

Summary

Product manager with a focus on data-driven product strategy, AI-based solutions, and scalable B2B SaaS products. Several years of experience taking responsibility for product initiatives across the full lifecycle - from discovery and business case to go-to-market and scaling.

Strong at turning business needs into technical solutions, in stakeholder management, and in leading international teams. My goal: build products that create strategic value and deliver measurable results.

Skills

Product Management
Product Development
Scrum Master
Kanban
Jira
Confluence
Process And Systems Modeling
Retrospectives
Robotics
Quality Assurance
Machine Learning
Quality
Customer Acquisition
Bpmn
E-Invoicing
Cross-Functional Teams
User Testing
Design Thinking
Feedback
Payment Processing
Electronic Design
Computer Vision
Data Analysis
Sensors
Prototyping
Productivity
Meeting Deadlines
Go-To-Market Strategies
Ai
Automation
Software Testing
User Experience
Product Manager
Ui Design
Test Automation
Agricultural Machinery
Workshop Facilitation
Project Management
Business Strategy
Fintech
Agility
Java
C
C++
Python
Network Infrastructure
Communications Technology
Internet Of Things
Figma
Claude
Claude Code
Cursor Ai
Lovable
Agentic Ai

Languages

French

Native

German

Advanced

English

Advanced

Japanese

Elementary

Swahili

Elementary

Education

Apr 2026 - Jun 2028

Fernuniversität Hagen

Master · Business Administration for Engineers · Hagen, Germany

Technical University of Darmstadt

Bachelor · Electrical and Information Engineering · Darmstadt, Germany

RheinMain University of Applied Sciences

Bachelor · Electrical and Information Engineering · Rüsselsheim, Germany

...and 1 more

Statistics

Experience

Total positions 6

Experience in Information Technology 2.5 y

Avg length 11 m

Longest experience 1 y 11 m

Expertise

Recent roles Lead Product Manager E-invoicing & AI, Associate Software Product Manager Data & AI, Release Train Engineer & Scrum Master Assistant

Main industries Information Technology, Telecommunication, Banking and Finance

Main business areas Product Development, Project Management, Business Intelligence

Qualifications

Highest degree Master

Profile

Created

May 2026

Last Update

July 2026

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Frequently asked questions

Have questions? Find more information here.

Maxime is based in Frankfurt am Main, Germany.

Maxime speaks the following languages: French (Native), German (Advanced), English (Advanced), Japanese (Elementary), Swahili (Elementary).

Maxime has at least 5 years of experience. During this time, Maxime has worked in at least 6 different roles and for 6 different companies. The average length of individual experience is 1 year and 11 months. Note that Maxime may not have shared all experience and actually has more experience.

Based on recent experience, Maxime would be well-suited for roles such as: Lead Product Manager E-invoicing & AI, Associate Software Product Manager Data & AI, Release Train Engineer & Scrum Master Assistant.

Maxime's most recent position is Lead Product Manager E-invoicing & AI at fino data services GmbH.

In recent years, Maxime has worked for fino data services GmbH, Sage Group, KFW-Bankengruppe, and Deutsche Telekom AG.

Maxime is most experienced in industries like Information Technology, Telecommunication, and Banking and Finance. Maxime also has some experience in Automotive and Manufacturing.

Maxime is most experienced in business areas like Product Development, Quality Assurance, and Business Intelligence. Maxime also has some experience in Strategy, Project Management, and Information Technology.

Maxime holds a Master in Business Administration for Engineers from Fernuniversität Hagen, a Bachelor in Electrical and Information Engineering from Technical University of Darmstadt and a Bachelor in Electrical and Information Engineering from RheinMain University of Applied Sciences.

Maxime is immediately available full-time for suitable projects.

Maxime'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 Maxime, click the Meet button on the profile to request a meeting and discuss your project needs.

Daily Rate Distribution

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Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

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Daily rate avg. 943 €

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1000

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Median rate 980 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.