Carmen B.-Technical Product Owner | Payments, Billing & Partner Integrations
Check rate
Experience
Technical Program Lead / Epic Owner – Partner API
Remote Freelancer (contracted to Telefónica via Iskander Business Partner GmbH)
- Contributed to early structuring of a Partner API EPIC within Telefónica's mass-market platform program, including requirement alignment and blueprinting.
- Worked with engineering leadership to clarify scope, delivery approach and cross-team dependencies.
- Provided input on delivery coordination and process improvements.
- Engagement concluded early following program budget reductions.
Technical Product Owner
Alphacomm - the revenue boosting platform
- Led Agile delivery of a digital goods e-commerce platform (Checkmaxx), enabling mobile top-ups, vouchers, and gift cards
- Oversaw product strategy for an e-commerce platform offering digital vouchers and prepaid cards
- Led a team of 10 (developers, testers, PM), delivering new features and improving system architecture
- Defined MVPs, roadmap, and release scope, aligning business goals with technical execution
Technical Product Owner – Integration & Automation Projects
Independent: small clients and personal projects
- Invoice verification agent (client prototype): designed and delivered an end-to-end automated B2B prototype covering document and VAT validation, checks against contracts, POs and timesheets, and payment fraud and IBAN verification; live for a limited period.
- AI content automation (client prototype): built an end-to-end automated generative AI pipeline in Python, orchestrating OpenAI, ElevenLabs and FFmpeg, publishing to YouTube; live for a limited period.
- Services comparison platform (client project): built components of a Romanian comparison platform, including SEO landing pages, provider data, price comparisons, lead-generation flows and deployment automation, using AI-assisted development.
- Built semantic search prototypes with embeddings, and reusable prompt and evaluation frameworks to improve output quality.
Technical Product Owner (Value-Added Services Specialist)
Hutchison Drei
- Acted as Technical Product Owner and team lead for telecom billing and VAS integration projects
- Designed and launched the VAS Billing Tool, enabling third-party content billing via carrier invoice
- Scripted in Java, PL/SQL, and Shell to support troubleshooting, backend integrations, and reporting
- Facilitated Agile ceremonies, managed stakeholder communication, and ensured regulatory compliance
- Led product discovery, blueprinting, QA coordination, and roadmap alignment for internal tools
IT Consultant
Ericsson
- Supported telecom system integration and successful billing migrations
- Developed internal tools and documentation for project and delivery teams
- Scripted using SQL, Shell scripting, and Java to meet business needs
Software Developer
A&P
- Full-stack web application development for public sector clients
- Wrote technical documentation and managed delivery cycles
Software Developer
InfoSoft
- Full-stack web application development
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Telecommunication, Media and Entertainment, Information Technology, and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Project Management.
Summary
Technical Product Owner with 15+ years in billing, payments and partner integrations across telecom, fintech and e-commerce.
At Hutchison Drei I designed and launched a carrier billing platform whose annual billed value grew from about €10M to over €50M during my ownership, onboarded 30+ third-party partners, and coordinated integrations with Google, Apple and Microsoft. At Alphacomm I led delivery of a digital goods platform with a team of 10, driving end-to-end payment provider integrations.
A former software developer, I work hands-on with engineers on API design, transaction flows and production troubleshooting. Recently I delivered end-to-end automated AI prototypes for clients, including invoice verification covering VAT validation, contract and PO matching, and payment fraud and IBAN checks.
Available for remote contract and interim engagements, ideally part-time.
Skills
- Technical Product Ownership
- Payment Systems
- Billing Systems
- Carrier Billing
- Payment Provider Integrations
- Partner Onboarding
- Transaction Flows
- Invoice Verification
- Api Integration
- Value-Added Services (Vas)
- Project Management
- Product Roadmapping
- Backlog Prioritization
- Product Discovery
- Mvp Design
- Feature Planning
- Cross-Team Alignment
- Blueprinting
- Agile Delivery
- Business Analyst
- Agil/Kanban
- Sprint Planning
- User Stories
- Backlog Grooming
- Requirements Engineering
- Uml
- Bpmn
- Saas
- Web Services
- Rest
- Soap
- Oracle
- Hp-Ux
- Telecom
- E-Commerce
- Fintech
- Unix
- Aws
- Ci/Cd
- Jira
- Confluence
- Jenkins
- Git
- Qa Support
- Technical Gdpr
- Java
- Pl/Sql
- Sql
- Shell Scripting
- Python
- Openai Api
- Llm Integration
- Data Privacy Compliance
- Technical Documentation
Languages
Education
University of Bucharest, Faculty of Letters
Master Degree · Theoretical Linguistics · Bucharest, Romania
University of Bucharest, Faculty of Mathematics and Computer Science
Bachelor Degree · Computer Science · Bucharest, Romania
Certifications & licenses
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Carmen is based in Cisnădie, Romania and prefers 100% remote projects.
Carmen speaks the following languages: Romanian (Native), English (Advanced), German (Intermediate).
Carmen has at least 21 years of experience. During this time, Carmen has worked in at least 6 different roles and for 7 different companies. The average length of individual experience is 3 years and 11 months. Note that Carmen may not have shared all experience and actually has more experience.
Based on recent experience, Carmen would be well-suited for roles such as: Technical Program Lead / Epic Owner – Partner API, Technical Product Owner, Technical Product Owner – Integration & Automation Projects.
Carmen's most recent position is Technical Program Lead / Epic Owner – Partner API at Remote Freelancer (contracted to Telefónica via Iskander Business Partner GmbH).
In recent years, Carmen has worked for Remote Freelancer (contracted to Telefónica via Iskander Business Partner GmbH), Alphacomm - the revenue boosting platform, and Independent: small clients and personal projects.
Carmen is most experienced in industries like Telecommunication, Media and Entertainment, and Information Technology. Carmen also has some experience in Government and Administration.
Carmen is most experienced in business areas like Information Technology, Product Development, and Project Management.
Carmen has recently worked in industries like Media and Entertainment, Information Technology, and Telecommunication.
Carmen has recently worked in business areas like Information Technology, Product Development, and Project Management.
Carmen holds a Master in Theoretical Linguistics from University of Bucharest, Faculty of Letters and a Bachelor in Computer Science from University of Bucharest, Faculty of Mathematics and Computer Science.
Carmen has 3 certificates. These include: LearnWeb3, Prince2 Foundation, and Spring Core.
Carmen will be available full-time from December 2026.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
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.
Calculated based on our freelancers’ daily rates as of 13 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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