Open to remote engineering roles and contracts

Senior Applied AI Engineer

I build Python backend services, API integrations, and retrieval-based AI workflows. My experience combines hands-on implementation, engineering leadership, and client delivery.

Cyprian Aarons
Vetted developerToptal profile
PythonBackend servicesEngineering focus 1
FastAPIAPI integrationsEngineering focus 2
RAGApplied AI workflowsEngineering focus 3

Open source & labs

Public engineering work.

Public projects you can open and review. Each entry links to the code.

Vibe Scanner

Open source

A read-only security scanner for Next.js and Supabase repositories and live websites, with terminal, JSON, CI, and MCP output.

PythonNext.jsSupabaseCIMCP
Public repository

Evaluation-Driven Development Test Suite

AI engineering lab

An experimental evaluation harness for repeatable checks and comparisons. Scoring scope and coverage limits matter when interpreting results.

PythonLLM evaluation
Public repository

Deterministic Safety Sandboxes with MCP

AI engineering lab

Safe execution boundaries for tool-enabled software using MCP, with checks for prompt injection and unsafe tool behaviour.

MCPPythonAgent safetyValidation
Public repository

Track record

Experience

Hands-on engineering, client delivery, and team leadership.

Independent AI Consultant
Senior Applied AI Engineer · Remote

Worked on retrieval-based insurance enquiries, healthcare recovery workflows, and assessment software using Python, FastAPI, and LangGraph. Selected portfolio entries distinguish built systems, implementation designs, and prototypes.

Agentic AIFastAPILangGraph
AfricAI
Chief Technology Officer · Harare, Zimbabwe

Led engineering delivery for an AI platform, combining architecture with hands-on Python work. Worked on Redis caching, query optimisation, asynchronous services, and OpenAI/Stability.ai integrations.

LeadershipMLOpsPlatform Scaling
Coindraw, CST Ltd, Vanti
Senior Engineer — Independent Contractor · Remote

Delivered backend work for Coindraw, mobile operations and FastAPI integrations for CST, and Vue.js dashboards connected to Go-based telemetry services for Vanti. These were distinct client engagements.

BackendFinTechVue.jsIoT
Topiax.xyz
Founder & CTO · Remote

Founded a software delivery studio and led client projects, architecture, and implementation. Established testing and release practices for backend and product work.

LeadershipMicroservicesCI/CD
Full experience

Capabilities

Engineering toolkit

The tools I use to build and run these systems.

AI & Machine Learning
OpenAIAnthropicLangChainLangGraphRAGPyTorchTensorFlow
Backend & Cloud
PythonFastAPIDjangoNode.jsGoPostgreSQLAWSDockerCI/CD
Frontend
ReactNext.jsTypeScriptVue.jsTailwind CSS
Blockchain & Web3
SoliditySmart ContractsEthers.jsWeb3.jsDeFi

Social proof

What clients say.

A few words from people I have worked with.

Cyprian developed a middleware API platform that seamlessly integrated our business services. His technical expertise and deep understanding of our needs helped automate key processes and deliver a robust, user-friendly solution that significantly enhanced productivity.
Aryton
CTO · CST Ltd
Very easy to work with and understood the assignment. He is very knowledgeable in his field and I would be more than happy to work with him again.
Wanda
Client · Product engagement
A talented developer, always willing to put forth 100% effort on every project. I am honoured to have worked with him on many projects and looking forward to working with him on many more.
@bitgallery1
Repeat collaborator · Multiple builds

Open to opportunities

Need software that works in the real world?

I'm open to senior engineering, architecture, and contract roles. If one of these projects looks close to your problem, email me.

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