xavier@nairobi:~$ cat about.md
Most recently a Senior Software Engineer at Search Atlas, an agentic SEO platform — backend services integrating Google Search Console, Analytics, Ads, and Meta Ads. Previously three years at Code for Africa building civic-tech data platforms used by researchers and journalists across the continent.
Recent work centers on applied AI systems: gated RAG pipelines, LLM routing with automatic failover, and self-hosted model platforms where data sovereignty matters. AWS Solutions Architect certified. Open-source contributor to Django and CKAN.
xavier@nairobi:~$ systemctl list-units --type=work --sort=impact
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Ad-Domain Trust Classification System
FLAGSHIP
trust-classifier.service
Led development of an internal ad-quality classifier built as a gated multi-stage RAG pipeline — cheap signals evaluated first, so expensive model calls run only when they change the outcome.
stack: LlamaIndex · pgvector · Python · PostgreSQL
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LLM Orchestration Layer
FLAGSHIP
llm-router.service
Routing layer across leading LLM providers with automatic failover and cost-aware model selection — one interface for product teams, resilience and spend control underneath.
stack: Python · FastAPI · Redis
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Elasticsearch Cluster Operations
es-cluster.service
Designed and deployed an 8-node Elasticsearch cluster — 3 master-eligible, 5 data nodes — with custom Ansible roles for re-indexing, ILM, and snapshot lifecycle management. Benchmarked with Elastic Rally.
stack: Ansible · Elasticsearch · Kibana · Elastic Rally
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Self-hosted LLM Platform
llm-platform.service
Led the deployment of a self-hosted LLM platform to complement commercial providers — a private option where data sovereignty and predictable inference costs mattered most.
stack: Ollama · OpenWebUI
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Mediacloud Story-Indexer
story-indexer.service
Contributed to a distributed news ingestion pipeline operated by Mediacloud, a nonprofit research collaboration — an open archive used by researchers studying media ecosystems globally.
stack: Python · FastAPI · RabbitMQ · Elasticsearch · Docker
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Sensors.Africa
sensors-api.service
Backend services for an IoT air-quality network across multiple African cities — geo-tagged ingestion and async aggregation tolerant of intermittent connectivity.
stack: Django · DRF · GeoDjango · Celery · PostgreSQL
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Wazimap-NG
wazimap.service
Census and survey visualization platform with nested administrative geographies, tuned for spatial queries serving interactive maps across multiple African countries.
stack: Django · GeoDjango · PostgreSQL
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MT5 Algorithmic Trading System
PERSONAL
mt5-bot.service
Modular Python bot on MetaTrader 5 with a shared-code backtester, Telegram notifications, and multi-config isolation via magic numbers.
stack: Python · MetaTrader 5 · Tailscale