Open to opportunities

Javier Ceballos

@javierceballos

Message

Senior Product Owner delivering API integrations across regulated domains and retail-scale platforms.

Spain

Message

What I'm looking for

I’m looking to lead product delivery for API integrations in regulated domains, partnering closely with engineering and clients to turn complex requirements into shippable outcomes, using agile practices, strong stakeholder management, and data-driven prioritization.

I’m a Senior Product Owner and Product Manager focused on end-to-end delivery, especially API integrations in highly regulated, consumer-facing environments. I’ve turned around stalled and complex projects by getting to the facts behind the blocker, coordinating cross-functional teams, and restoring delivery quickly.

With 10+ years in tech (4 as Product Owner, 6 as developer), I bridge business and engineering—from discovery and user stories to stakeholder alignment and release execution. I’ve led 10+ API integrations, including reactivating a critical banking project in under 1 week, and I bring strong experience translating regulatory requirements into clear acceptance criteria while prioritizing using KPIs and data.

Experience

Work history, roles, and key accomplishments

Current

Product Owner

Current

Crealogix

Dec 2023 - Present (2 years 7 months)

Turned around a critical project stalled for 1 month by diagnosing the blocker, negotiating incremental API-contract delivery with the client, and restoring delivery in under 1 week. Defined RIB platform features for a consumer-facing mobile app and web experience, including Open Banking and SADAD payments, and coordinated release delivery with the bank.

REST APIs OpenAPI Open Banking Payments OAUTH2 Agile Scrum Backlog Management User Stories Acceptance Criteria Stakeholder Management Jira Confluence

Product Owner

Minsait

Sep 2021 - Dec 2023 (2 years 3 months)

Led electronic invoicing integrations with tax authorities across 5 European countries via APIs, meeting regulatory deadlines with differing local rules. Translated complex regulatory requirements into user stories and acceptance criteria and coordinated cross-functional delivery across multiple countries.

Invoicing Regulatory Requirements User Stories Acceptance Criteria Agile Scrum Stakeholder Management

Software Engineer (Product Integrations)

Grupo Quiter

Feb 2017 - Sep 2021 (4 years 7 months)

Led 10+ third-party API integrations for a dealership management software (DMS) used by 90% of the Spanish market, including integrations tied to Mercedes-Benz and Toyota North America. Implemented electronic invoicing integrations with Spain's AEAT and tax administrations across several LATAM countries, serving as a technical-functional reference for requirements gathering and incident resolution

Third Party Integrations Dealer Management Software Invoicing Requirements Gathering Incident resolution

R&D Engineer (IoT)

Ambar Telecomunicaciones

Jan 2016 - Jan 2017 (1 year)

Built a functional proof-of-concept for relay management using ZigBee by integrating physical devices into a software control system.

IoT Proof of Concept Zigbee Relay Management

Programmer Analyst / Senior Developer

GFT / ISBAN

Jan 2011 - Jan 2016 (5 years)

Developed and designed applications for Banco Santander's risk department, covering for the project manager during a leave and bringing the project to its deadline in 3 months. Coordinated the software factory during delivery.

Application Development Application Design Project Coordination Software Factories