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Alex Haya

@alexhaya

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Backend engineer with 4+ years building scalable Python APIs and AI-integrated features end-to-end.

Kenya

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What I'm looking for

I’m looking for a remote-first team where I can take full ownership from design to production—shipping scalable Python backends, optimizing performance, and integrating AI features safely with strong engineering quality.

I’m a backend engineer with 4+ years of experience shipping scalable Python applications, APIs, and AI-integrated features end-to-end. I’ve built and deployed a production async FastAPI platform (18 modules, 228 tests) with real-time WebSocket streaming, PostgreSQL with Alembic migrations, and 8 security hardening phases—taking full ownership from design to production.

I use Claude Code daily as a development co-pilot for generation, scaffolding, debugging, and refactoring, while critically reviewing AI-generated code before merging. At Turing, I evaluated AI coding agents by building golden solutions, test cases, and quality frameworks, and I’ve also integrated Claude APIs into production systems like a Predictive Maintenance Dashboard.

Experience

Work history, roles, and key accomplishments

AI Training & Evaluation Specialist

Turing

Aug 2025 - Feb 2026 (6 months)

Evaluated and quality-checked AI-generated code for correctness, efficiency, scalability, and best-practice adherence, determining when manual intervention is required. Built golden solutions/test cases and Python testing frameworks to detect hallucinations and vulnerabilities, and conducted AI safety red-teaming using PyRIT.

Python Golden Solutions Hallucination Detection Security Testing Prompt Injection Testing PyRIT Testing Frameworks Documentation

Freelance Backend & IoT Engineer

Upwork

Jan 2022 - Jan 2024 (2 years)

Delivered 25+ backend and API integration projects and IoT implementations for international clients with end-to-end ownership and tight deadlines. Integrated IoT devices with cloud backends using REST and MQTT, built Python automation for provisioning/testing, and supported real-time dashboards.

Python API Integration MQTT IoT Back Ends AWS IoT ThingsBoard Data Pipelines Testing Thingsboard

Backend Engineer & Technical Mentor

TechOps Apex

Jan 2022 - Jan 2024 (2 years)

Designed and shipped async FastAPI backend services and REST APIs with PostgreSQL, Alembic migrations, JWT auth, RBAC, rate limiting, and structured error handling. Implemented WebSocket streaming for live dashboards, improved reliability with monitoring/logging, and maintained quality with 228+ passing pytest tests in CI/CD.

fastAPI AsyncIO PostgreSQL SQLAlchemy Alembic WebSockets Pytest

Embedded Systems Engineer (Intern)

Innovate Embedded Labs

May 2023 - Jul 2023 (2 months)

Built firmware for microcontrollers used in IoT loggers and smart meters, and assisted with debugging and testing. Reduced test cycle time by 30% through improved testing and troubleshooting workflows.

Firmware IoT Loggers Debugging Testing Embedded Systems