Javier De Ulacia

I’m a Senior Backend Engineer specialized in Go (Golang) and distributed microservice architectures, currently contributing to the LBC Maps domain at Leboncoin (Adevinta Group).

My work focuses on building and scaling geo-intelligence and account-based services that power real-estate precision, location search, and AI-assisted insights across the LBC ecosystem.

- Golang microservices: Clean architecture with layered design (handlers → services → repositories), robust testing, and dependency injection.

- PostgreSQL / JSONB: Efficient data modeling for nested business settings and geo-entities.

- Caching & performance: Redis, HTTPCacheV2, structured geocoding, and HERE API integration.

- Cloud & pipelines: Kubernetes (URSA CLI), Concourse CI/CD, Bazel builds, Vault/Consul secrets.

- OpenAPI & documentation: Full specs, TechDocs integration (Backstage), and maintainable SDKs.

- Event-driven design: Kafka-based reindexing and sync with the Real-Estate aggregator services.

- High-performance APIs for real-estate geospatial data.

- AI integration (GenAI inference over geographic & semantic data).

- Domain-driven backend architectures for business scalability.

- Clean, tested, and documented codebases aligned with production standards.

TECHXONN is an IT consultancy specializing in microservices architectures that enable the development of modular, agile, and maintainable applications, which adapt agilely to business needs.

⦿ Custom Software Development and Maintenance

We design, develop, and improve custom software solutions through web, mobile, and desktop platforms, ensuring they align perfectly with business objectives.

⦿ IT Consulting and Digital Transformation

We provide expert guidance on implementing IT best practices, process optimization, and developing digitalization strategies that prepare the business for the future.

⦿ IT Project Management

From planning to execution, we manage IT projects with precision, ensuring on-time delivery within budget and exceeding quality expectations.

⦿ Cloud Computing Solutions

We implement and manage robust cloud infrastructures, handling everything from system migrations to continuous cloud optimization, ensuring scalability and security.

⦿ Systems Integration

We streamline operations by integrating diverse systems and applications, enhancing communication and driving operational efficiency.

⦿ Data Analytics and Business Intelligence

Leverage our big data expertise to transform raw data into actionable insights, enabling data-driven decision-making with confidence.

⦿ Business Process Automation (BPA)

We develop automation solutions that eliminate repetitive tasks, improve workflow efficiency, and boost productivity across the organization.

The rapid growth of e-commerce and market fragmentation present exciting opportunities to reach new customers and expand into untapped markets.

However, navigating this landscape can be complex. Intricate technologies, operational hurdles, and a lack of local market knowledge often create significant barriers to entry.

Kunnan removes these obstacles. We provide risk-free, flexible, and centralized solutions tailored for brands and manufacturers. Our platform simplifies your e-commerce operations, helping you accelerate sales growth, make data-driven market decisions, and drive your business forward without the hassle.

As a Partner and Technical Lead at Kunnan, I brought extensive experience in integrating with major global marketplaces like Amazon, eBay, AliExpress, and Mirakl. Having worked extensively with their APIs, I understood the intricacies of building robust, scalable platforms that interfaced seamlessly with these ecosystems. This technical expertise ensured our solutions met the operational demands of each marketplace and adapted swiftly to their evolving requirements, allowing our clients to focus on growth while we managed the complexities behind the scenes.