Ronnie Ayesigwa
Lead Engineer at Hitaji Technologies
I'm a fullstack developer, optimist, and life long learner. I create web-based solutions and digital experiences that prioritize accessibility and inclusivity.
About
I'm a full-stack developer, optimist, and lifelong learner who began my tech journey in 2020. I currently serve as Lead Engineer at Hitaji Technologies, where I'm building Hitaji 360 — a multi-tenant SaaS platform with shared foundations for payments, chat, notifications, and AI, powering vertical products like Edu360 for school management.
I've had the privilege of contributing to organizations like Trilogy (Khoros), Turing (Google - Deepmind), and the Uganda Revenue Authority, spanning enterprise SaaS, AI model training, and government digital transformation.
When I'm not coding or innovating, I'm often found in the pool, trying to channel my inner Caeleb Dressel, or in the gym, working to match his physique. Whether it's in my work or personal life, I'm driven by a desire to learn, grow, and improve, every day.
Experience
June 2020 — Present Leading the architecture and development of Hitaji 360, a multi-tenant SaaS platform providing shared foundations — payments, chat, notifications, AI assistant, and identity — with vertical products like Edu360 for school management. Building across 9 services spanning .NET, NestJS, Next.js, and React Native (Expo), serving both web and mobile clients.
- React
- React Native
- NestJS
- .NET
- Next.js
- TypeScript
- Expo
- PostgreSQL
- MongoDB
Sept 2025 — Jan 2026 Led AWS infrastructure cost optimization for Khoros' enterprise SaaS products (Care, Communities, Spredfast). Spearheaded ElastiCache consolidation migrating 90 Redis clusters to shared Valkey 8.0 architecture, targeting >$146K annual savings. Reduced CloudWatch API costs by ~$129K/year through Datadog integration consolidation. Analyzed CloudFront traffic patterns for high-volume communities (100M+ daily requests) to identify cache optimization opportunities.
- AWS
- Python
- ElastiCache
- Datadog
- CloudFront
- Athena
Jan 2025 — Sept 2025 Designed and implemented complex, end-to-end digital systems that streamlined and scaled operational workflows across industries including education, auto finance, marketing, and nonprofit organizations.
- React
- Node.js
- System Design
July 2024 — Dec 2024 Tested and evaluated Gemini's coding capabilities on open-source repositories to identify implementation gaps, leveraging insights to create RLHF datasets for advanced AI model training. Gained extensive expertise in complex coding structures, like parsers and linters, while contributing to the refinement and reliability of state-of-the-art AI coding models.
- Node.js
- React
- AI/ML
June 2022 — June 2024 Designed and built dynamic full-stack solutions tailored to supercharge the business operations of the Uganda Revenue Authority. In tandem with a power-team of developers, consistently delivered top-notch, unyielding production code. Always at the forefront of collaborative brainstorming, cutting-edge design, and impeccable product output.
- React
- TypeScript
- NextJS
- Java
- Quarkus
Projects
Hitaji 360
A multi-tenant SaaS platform providing shared business foundations — payments, chat, notifications, AI assistant, and identity — with pluggable vertical products. Currently powering Edu360, a comprehensive school management system with web and mobile apps for administrators, teachers, and parents.
- React
- React Native
- NestJS
- .NET
- Next.js
- TypeScript
- PostgreSQL
- MongoDB
- Expo
Hitaji Save
A smart expense tracking app featuring an AI assistant that helps manage your finances through natural conversation. Users can speak to the AI about their transactions or upload receipt images, and the assistant automatically extracts and logs the transaction details. The AI also provides personalized financial insights and budgeting recommendations based on spending patterns.
- React
- Node.js
- Docker
- AI/ML
- TypeScript
Fundify
A SaaS platform for investment clubs and savings groups to track contributions, manage loans, distribute profits, and grow investments together. Features a comprehensive dashboard with real-time club overviews, asset tracking, and member management.
- Next.js
- React
- Node.js
- TypeScript
- PostgreSQL
Hitaji Bot — Autonomous Coding Agent
An autonomous AI coding agent that receives tasks via Slack, discovers relevant code across 10+ microservices, implements changes, validates them by orchestrating local service deployments, and creates pull requests — all without human guidance.
- TypeScript
- Node.js
- LLM Tool-Calling
- Git
- Docker
- Slack API
BBS Harness — AI Structural Drawing Analyzer
A multi-stage LangGraph agentic pipeline that extracts bar bending schedules from structural engineering PDFs, using durable Postgres-backed checkpointing for resumable, crash-resilient orchestration with human-in-the-loop review gates.
- Python
- LangGraph
- Computer Vision
- PostgreSQL
- LLM Agents