Built with Path
Zain

Zain

Engineering Lead — Distributed Systems & AI Architecture • London, United Kingdom

About

Staff engineer with over 10 years of experience building large-scale distributed systems at Amazon, JPMorgan, and high-growth fintech. Currently leading engineering at Healf, focusing on AI-native systems and infrastructure.

Experience

2024 — Current

Engineering Lead at Healf

Lead the engineering function, including technical strategy and architecture for an AI-driven wellness platform. Architected and shipped Helix, a production AI agent that handles customer queries and autonomous actions.

2024 — 2025

Staff Engineer (Contract) at Thredd

Architected a distributed card ledger from the ground up using DynamoDB and an append-only journal for strong consistency. Implemented idempotent payment workflows and real-time limit enforcement.

2023 — 2024

Lead Engineer at The Bank of London

Shipped a production RAG assistant for account onboarding and designed a retrieval pipeline to explain complex banking products. Automated compliance workflows, reducing onboarding time by approximately 30%.

2022 — 2023

Lead Software Engineer, Risk at JPMorgan Chase

Built an auto-scaling Kubernetes platform for investment banking risk workloads. Integrated Redis caching and concurrency optimizations, cutting job runtimes by 40% and reducing cloud costs by 20%.

2020 — 2022

SDE II, Prime Video & AWS at Amazon

Led the development of an org-wide telemetry SDK for Prime Video TV clients and built AWS cloud infrastructure to ingest millions of events daily. Delivered authentication services for Prime Video/Freevee, improving data consistency by 90%.

Projects

Helix

A production AI agent using LangChain that takes autonomous actions including order tracking, support resolution, and personalized recommendations.

Skills

Distributed SystemsAI ArchitecturePythonTypeScriptKubernetesAWSPostgreSQLRedisLangChainOpenAIRAGEvent SourcingSystem DesignElasticsearch