Joe Macibi

Backend engineer and AI systems builder with 5 years of production experience designing, shipping, and operating LLM-integrated backend services, RAG pipelines, structured output validation systems, and data orchestration workflows.

Built

InfraRecord, a production RAG platform using Python, LangChain, and the OpenAI API with structured output generation, validation pipelines, audit logging, and fallback handling.

Senior Software

Engineer and Team Lead (remote, 5 engineers) at GipperPay Finance, where I led AI-assisted development workflows using Codex, Claude Code, and Devin daily, enforcing code review discipline, test coverage, and validation on all AI-generated outputs. Operates confidently across Python, FastAPI-style REST API design, PostgreSQL, async processing, Docker, Kubernetes, and AWS. Holds an AI Security and Governance certification (Securiti AI), GRC credential (Strathmore University, Distinction), and CISA, providing a compliance and traceability grounding relevant to PixeSci's audit and reproducibility mission.

BSc Information Technology, JKUAT (GPA 3.4/4.0, December 2025, Departmental Merit Prize).

Senior Software Engineer and Team Lead at GipperPay Finance (2023-05 – Present)

• Led a remote team of 5 engineers building and maintaining Python and Java backend services for payments, lending, and payroll systems; conducted structured code reviews, enforced test coverage standards, and guided architecture decisions across all AI-assisted and standard features.
• Built LLM-integrated backend services using LangChain, the OpenAI API, and Claude API for AI-assisted financial workflow generation, structured output validation, and decision logging, with explicit validation contracts between AI-generated suggestions and executable business logic.
• Designed and implemented prompt pipelines with structured output schemas, validation layers, retry logic, and deterministic fallbacks, ensuring AI behavior remained reliable, traceable, and testable in production financial workflows.
• Directed compliance and governance architecture for GipperPay's Kenyan market entry: mapped all platform data flows, API integrations, and AI decision paths to CBK regulatory requirements, COBIT and NIST frameworks, implementing audit logging and execution history recording that made every AI-assisted decision reproducible and traceable.
• Operated AI-native development workflows daily using Codex, Claude Code, Devin, and Cursor, treating all AI-generated code with strict review discipline: explicit failure mode specifications written before generation, adversarial edge case testing, and no AI output merged without validation and test coverage.
• Built Kafka event pipelines processing 30,000+ monthly signals, Prometheus and Grafana monitoring for real-time observability, and Terraform IaC on AWS (EKS, S3, RDS), reducing latency by 80% and costs by 25% through systematic optimisation.

AI and Robotics Tutor at Deutsche Schule Nairobi (2024-09 – Present)

Part-Time, Concurrent

• Designs and delivers structured AI curricula for students under 14, including sessions on how LLMs behave, where they fail, and why AI outputs require validation before acting on them — directly reflecting the production AI discipline PixeSci requires.

Software Engineer at Pesapal Limited (2022-06 – 2023-03)

• Built and maintained multi-vendor mobile money API integrations (M-Pesa, Airtel Money, MTN MoMo) with structured payload validation, security controls, and async transaction processing workflows across merchant payment platforms in East and Central Africa.
• Monitored PostgreSQL and MySQL transaction data streams for anomalies; produced structured operational reports and maintained compliance documentation.

Network Infrastructure Assistant at The Catholic University of Eastern Africa (2020-01 – 2020-04)

Internship

• Configured automated event logging scripts using Linux coreutils for infrastructure monitoring; maintained structured operational records and IT governance documentation.

Bachelor of Science in Information Technology – Jomo Kenyatta University of Agriculture and Technology (JKUAT) (2025-12)

Professional Credential in Governance, Risk, and Compliance (GRC) – Strathmore University (2024-01 – 2024-04)

Associate Degree in Information Technology Networking – Jomo Kenyatta University of Agriculture and Technology (JKUAT) (2021)