LI
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Open source
Ratify May 2026 – present

Schema changes break pipelines when the people making them don't know who depends on them. Ratify puts a proposal workflow between the decision to change and the system that depends on it.

Platform & developer experience
Developer Standards Platform Oct 2024 – present

Standards enforcement for a 30-person polyglot team, built into the editor. A VSCode and PhpStorm extension checks code on save against the team's guidebook and flags violations inline.

Servernah Billing System July 2025 – present

Moving off Fleio meant building the billing layer from scratch. Metering, credit enforcement, and invoicing, all built directly against the OpenStack environment.

Servernah SLA Monitoring Framework Apr 2025 – present

SLA measurement at Atlancis was a manual process with no real-time visibility. This replaced it with automated correlation across infrastructure alerts, ticket lifecycle data, and OpenStack service states.

Engineering Procedures & Templates Nov 2024 – present

DevOps procedures written during ISO 9001 and ISO 27001 certification, each with an active tool behind it. All six are still in use.

Data infrastructure & migrations
Oracle to PostgreSQL - DBS Bank Nov 2016 – Jul 2018

Migrating core banking applications from Oracle to PostgreSQL as an embedded contractor. The commercial banking engine and payment processing system went live with no downtime at cutover.

Oracle to Redshift - Kisumu County 2019 – 2021

A 150TB Oracle warehouse, running since 2009, migrated to Redshift after a new ERP rollout pushed the cluster past what it was sized for. The schema was redesigned around Redshift's distribution model. Zero downtime at cutover.

Multi-Currency Financial Aggregation Platform Jun 2021 – Nov 2023

Every bank sends data differently. A single user could hold accounts across currencies with no common schema. The normalisation layer that handled both is what the acquirer took.

Systems engineering & research
Data Protection Assessment Tool Dec 2024 – present

GDPR and KDPA compliance mapped across two frameworks in Django. Admins assign sections, assessors complete them independently, scores aggregate automatically.

LLM Red Team Infrastructure Sep 2025 – present

An adversarial testing layer built on a steered Llama 3 8B, running continuously against internal infrastructure to surface misconfigurations and API vulnerabilities.

Federated Learning for Privacy-Preserving Analytics March 2023 – Nov 2023

CCPA and PIPL made it illegal to pool training data across jurisdictions. The project built the mathematical and engineering foundations for a fraud detection model that could train across borders without raw data moving.

Lewis Injai · Nairobi ·
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