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Porto, Portugal

Hi, I'mJoão Granja

Somewhere between the code and the people

Technology executive and founder with a proven track record of defining, building, and scaling core platforms across e-commerce, fintech, payments, marketing, logistics, and large-scale operational systems.

João Granja

Building technology
with purpose

I've owned end-to-end technology strategy, from early-stage architecture to multi-country scale, leading high-performance teams and operating mission-critical, multi-tenant platforms serving millions of users.

My work consistently bridges deep engineering, product vision, and business outcomes, delivering measurable cost efficiency, revenue enablement, and long-term platform resilience.

I approach technology with a founder mindset: durable architecture, capital efficiency, and execution at scale.

Scalable Platforms

Multi-tenant architectures serving millions across 35+ countries

Engineering Leadership

Building and scaling high-performance engineering organizations

Founder Mindset

Durable architecture, capital efficiency, and execution at scale

Professional
experience

Chief Technology Officer

La Redoute
Sept 2023 — Present

French multichannel retailer founded in 1837, known for ready-to-wear fashion and home decor.

  • Defined and owned the technology strategy for a leading European e-commerce platform serving 10M+ active customers across 26 countries
  • Led platform modernization initiatives supporting the company's transformation to 90% online sales, including cloud adoption, data platforms, cybersecurity, and AI-enabled customer operations
  • Drove organizational and technical transformation by breaking down silos, aligning product, engineering, and business teams
  • Led and scaled high-performance engineering organizations operating mission-critical, high-traffic platforms
E-commerceCloudAICybersecurity26 Countries

Portfolio Chief Technology Officer

Jumia Group NYSE Listed
2014 — 2023

Leading e-commerce platform in Africa. Appointed to lead multiple high-growth business units as Portfolio CTO across Payments, On-Demand, Marketing, Travel, and Marketplace within a NYSE-listed environment. Built and scaled core infrastructure across 35+ countries under high regulatory and operational complexity.

CTO — Jumia Pay Payments Infrastructure

Built and operated multi-service digital payments infrastructure across multiple African markets.

  • Millions of e-commerce transactions annually with high-availability payment systems
  • Supported e-commerce, utility payments, airtime, and financial services
  • Operated under regulatory fragmentation and variable market maturity
  • Enabled financial inclusion at scale with resilient architecture
  • Structured platform for reuse across marketplace verticals

CTO — Jumia On-Demand Services Real-Time Logistics

Built sub-30-minute commerce infrastructure across food, grocery, and retail delivery.

  • Designed real-time logistics coordination systems
  • Integrated merchants, riders, partners, and consumer apps
  • Scaled distributed engineering under rapid geographic expansion
  • Enabled new business models without re-architecting core stack

CTO — Jumia Marketing & Digital Services Advertising & Revenue

Built ad-tech and revenue enablement platforms reaching millions of marketplace users.

  • Created scalable advertising, affiliate, influencer, and merchandising infrastructure
  • Supported peak commercial events with zero-failure tolerance
  • Increased seller monetization via data-driven targeting systems
  • Structured platforms as revenue multipliers, not cost centers

CTO — Jumia Travel & Kaymu 35+ Countries Rollout

Built scalable booking and C2C/B2C marketplace systems across emerging markets.

  • Led platform consolidation during post-merger integration
  • Unified regional stacks into scalable multi-tenant systems
  • Supported aggressive international expansion across 35+ countries
  • Increased operational predictability across markets
FintechPaymentsLogisticsAd-TechMarketplace35+ Countries

Project Chief Technology Officer

Rocket Internet SE
2012 — 2014

Technical leadership on global e-commerce and operations web applications development. Interfacing business requirements and technical execution. Refining and optimizing the software development process.

  • Lazada Group — Operations across Indonesia, Malaysia, Philippines, Singapore, Thailand and Vietnam. Backed by Tesco, Temasek, J.P. Morgan, and Rocket Internet
  • OMS (Order Management System) — Warehouse and order management platform serving 35 countries. Used by Lazada, Zalora, and Jumia
  • Bamarang — Design-focused company transferred to WestWing
E-commerceGlobal ScaleOMSWarehouse Management

IT Supervisor

CBase, Lda
Jul 2010 — Feb 2012

Dynamic startup focused on building enterprise-level frameworks across various business sectors.

  • Built enterprise-level frameworks and custom platforms across multiple industries
  • Led teams, defined technical architectures, and owned delivery timelines and quality
  • Developed strong client-facing execution and system design foundations
EnterpriseArchitectureClient Delivery

Founder & Technology Builder

Independent Professional
Jan 2009 — Present

Founded, defined, built, and commercialized a proprietary multi-tenant digital infrastructure designed to eliminate operational friction in complex, high-pressure environments.

  • Defined and owned a core platform architecture with multiple applications, enabling reusable deployments across sports federations, public institutions, and large-scale international events
  • Built a mission-critical system that transformed fragmented logistics and human coordination into predictable, automated, and scalable operations
  • Successfully operated the platform across international events, supporting 900+ athletes from 26 countries
  • Coordinated teams, delegations, transport, accommodation, competition frameworks, and operational staff through a single unified system
  • Provided strategic technical leadership and custom infrastructure to various organizations
FounderMulti-tenantSports TechEvent Management

Academic
background

Master's Degree

Universidade do Minho, Portugal2007 — 2009

Distributed Systems, Application Engineering, High-Availability Systems. Thesis on High-Availability Web Application Deployment Automation.

Bachelor's Degree

Universidade do Minho, Portugal2004 — 2007

Computer Systems Engineering. Programming, computer architecture, operating systems, communication networks, and software development.

Languages

PortugueseNative
EnglishProfessional

Latest
writing

All articles

Let's build
something together

I'm always open to discussing technology, leadership, and new challenges. Feel free to reach out.