Caleb Kiragu
Product Engineer building AI, data & financial systems.
I build software end-to-end — from product architecture and APIs to AI systems, data pipelines and cloud infrastructure.
Currently available for full-time, contract and part-time engineering work.
Status: Open to Work · Nairobi, Kenya · Remote Worldwide
01 / Capabilities What I Build
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Product Engineering
Full-stack applications, APIs, integrations, dashboards and internal tools.
TypeScript · React · Node.js · Python · SQL
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AI & Intelligent Systems
LLM applications, agents, RAG systems, evaluation workflows and AI-powered product features.
Python · LLMs · RAG · Agents · AI APIs
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Data Systems
Data ingestion, transformation, annotation, quality control, metadata and versioned datasets.
ETL · Pipelines · SQL · Metadata · Provenance
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Infrastructure
Production APIs, cloud systems, databases, deployment and operational infrastructure.
AWS · Linux · Node.js · Python · MySQL · APIs
How I Take Ownership
I work best on ambiguous problems where someone needs to figure out the architecture, build the thing, ship it and keep it running.
02 / Selected Work Selected Work
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01
DataYetu
Building infrastructure for human data used by AI.
DataYetu is a data infrastructure platform for collecting, annotating, validating and versioning human-generated datasets for AI systems.
- What I Built
- Designed and built the product and technical foundations for annotation workflows, data processing, AI interfaces and versioned datasets.
- Technical
- Data pipelines · annotation systems · data quality · metadata · provenance · AI interfaces
- Stack
- TypeScript · React · Node.js · AWS · AI / LLMs
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02
RemoteDevTools
AI-assisted tooling for working across remote development environments.
An agent, browser extension and web interface for debugging and shipping software in remote environments.
- What I Built
- Designed and implemented the agent layer, browser extension and web surface connecting developers with remote environments.
- Technical
- Agent orchestration · remote execution · developer tooling · state management · browser tooling
- Stack
- TypeScript · Bun · WebSocket · VS Code API · React · Vite · React Native
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03
PesaToken
Financial infrastructure connecting familiar payment experiences with on-chain systems.
Built crypto wallet and payment infrastructure supporting multiple blockchain networks and asset types.
- What I Built
- Wallet infrastructure, transaction flows, blockchain integrations, backend services and payment interfaces.
- Technical
- Wallet infrastructure · blockchain APIs · transaction systems · custody / ledger architecture · payment flows
- Stack
- TypeScript · React · Node.js · Base · Ethereum · Celo · Tatum
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04
SISI
Software for local commerce and communities.
A community commerce platform connecting businesses and users through local discovery and marketplace infrastructure.
- What I Built
- Owned full-stack product engineering across application architecture, business onboarding, marketplace functionality and community systems.
- Stack
- TypeScript · React · Next.js · AWS
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05
Refacto AI
AI tooling for understanding and managing software repositories.
An AI-powered tool for documenting and working with JavaScript, TypeScript and Python repositories.
- Technical
- Repository analysis · code understanding · AI workflows · developer tooling
- Stack
- Python · FastAPI · PostgreSQL · Redis · OpenAI · Docker
03 / Experience Experience
I've spent the last few years building products in small teams where engineering often meant owning the entire path from idea to production.
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DataYetu
Founder / CEO · Product & Engineering
Building data infrastructure for AI systems, with a focus on human-generated African datasets.
2026 — Present
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SISI
CTO / VP Engineering
Full-stack product engineering for community commerce.
2026 — Present
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MenoDAO
CTO / VP Engineering
Product and infrastructure for community healthcare.
2026 — Present
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PesaToken
Founder / Engineer
Built payment and wallet infrastructure across multiple blockchain networks.
2024 — Present
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Rift Finance
VP Distribution & Marketing / Technical Builder
Built and grew product infrastructure while contributing to distribution and product strategy.
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Atlasium
Co-founder / Engineer
AI-powered codebase intelligence using knowledge graphs and LLM workflows.
04 / Process How I Work
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Understand the Problem
I start with the underlying problem rather than blindly implementing the requested feature.
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Design for the Constraints
I choose architecture based on the actual product, team, budget and operational constraints.
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Build End-to-End
I am comfortable moving between frontend, backend, data, AI and infrastructure.
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Ship and Iterate
Deployment, debugging, monitoring and iteration are part of the work.
I prefer owning outcomes over owning a narrow slice of a system.
05 / Tools Technical Toolkit
- Languages TypeScript · JavaScript · Python · C# · SQL
- Frontend React · Vite · HTML · CSS
- Backend Node.js · REST APIs · Serverless · Relational Databases
- AI / ML LLMs · RAG · Agents · Evaluation · Embeddings · AI APIs
- Data ETL · Data Pipelines · Annotation · Data Quality · Metadata · Provenance
- Infrastructure AWS · Linux · Docker · Git · CI/CD
- Web3 / Financial Infrastructure Ethereum · Base · Celo · Wallets · Transaction Systems · Tatum
06 / About About
I'm a builder, engineer and founder interested in the strange space between software and reality.
I've spent the last few years building products across AI, data, financial infrastructure and emerging-market technology — usually in environments where the requirements weren't completely clear and there wasn't another team waiting to solve the hard parts.
I like systems that are technically interesting but ultimately useful to someone. I care about systems that move money and meaning, and about software that holds up outside a demo.
I'm particularly interested in AI systems, data infrastructure, developer tools and products built for markets that conventional software tends to overlook.
07 / Notes Writing
Writing →08 / Hire Available for Work
I'm currently open to:
- Product Engineer
- Full-Stack Engineer
- Backend Engineer
- AI Engineer
- Founding Engineer
I'm available for:
- Full-time roles
- Contract engineering
- Part-time engineering
- Early-stage startup work
Nairobi, Kenya · Remote Worldwide
If you're building something difficult and need an engineer who can take ownership from idea to production, I'd like to hear about it.
Email: kiragu@datayetu.com