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I am a Staff and Lead Software Engineer with 9+ years delivering large-scale, cloud-native platforms across fintech, media, and developer tools. I design event-sourced systems and high-volume APIs, lead multi-disciplinary teams, and land production impact. Recent work includes a real-time card ledger at Thredd; an onboarding platform and production RAG assistant at The Bank of London; cloud modernization of risk compute at JPMorgan; and customer-facing AWS services and device SDKs at Amazon. I am known for clear architecture, hands-on leadership, and raising the engineering bar.…I am a Staff and Lead Software Engineer with 9+ years delivering large-scale, cloud-native platforms across fintech, media, and developer tools. I design event-sourced systems and high-volume APIs, lead multi-disciplinary teams, and land production impact. Recent work includes a real-time card ledger at Thredd; an onboarding platform and production RAG assistant at The Bank of London; cloud modernization of risk compute at JPMorgan; and customer-facing AWS services and device SDKs at Amazon. I am known for clear architecture, hands-on leadership, and raising the engineering bar.

Zain Zafar

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am a Staff and Lead Software Engineer with 9+ years delivering large-scale, cloud-native platforms across fintech, media, and developer tools. I design event-sourced systems and high-volume APIs, lead multi-disciplinary teams, and land production impact. Recent work includes a real-time card ledger at Thredd; an onboarding platform and production RAG assistant at The Bank of London; cloud modernization of risk compute at JPMorgan; and customer-facing AWS services and device SDKs at Amazon. I am known for clear architecture, hands-on leadership, and raising the engineering bar.…I am a Staff and Lead Software Engineer with 9+ years delivering large-scale, cloud-native platforms across fintech, media, and developer tools. I design event-sourced systems and high-volume APIs, lead multi-disciplinary teams, and land production impact. Recent work includes a real-time card ledger at Thredd; an onboarding platform and production RAG assistant at The Bank of London; cloud modernization of risk compute at JPMorgan; and customer-facing AWS services and device SDKs at Amazon. I am known for clear architecture, hands-on leadership, and raising the engineering bar.

Available to hire

I am a Staff and Lead Software Engineer with 9+ years delivering large-scale, cloud-native platforms across fintech, media, and developer tools. I design event-sourced systems and high-volume APIs, lead multi-disciplinary teams, and land production impact.

Recent work includes a real-time card ledger at Thredd; an onboarding platform and production RAG assistant at The Bank of London; cloud modernization of risk compute at JPMorgan; and customer-facing AWS services and device SDKs at Amazon. I am known for clear architecture, hands-on leadership, and raising the engineering bar.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Staff Engineer (Contract) at Thredd

July 1, 2025 - September 30, 2025

Owned the architecture for a distributed card ledger and transaction engine with event sourcing and append-only audit trails. Designed multi-currency ledgers, idempotent payment workflows, and real-time limit checks; ensured zero double-spend incidents in test and pilot. Led engineering design reviews and documentation to drive clarity on invariants, failure modes, and recovery procedures.

Lead Engineer, Onboarding Squad at The Bank of London

November 1, 2024 - September 30, 2025

Owned the end-to-end onboarding journey: data capture, document orchestration, Companies House integration, and sanction screening. Designed and shipped a production RAG assistant that explains account opening and product features; automated compliance workflows and SLAs, reducing onboarding throughput by ~30%.

Lead Software Engineer, Risk at JPMorgan Chase & Co.

November 1, 2023 - September 30, 2025

Led cloud migration of risk computation frameworks to AWS to unlock elastic compute and faster delivery cycles. Integrated Kubernetes, Redis, and PostgreSQL; cut job runtimes by ~40% with improved caching and concurrency. Optimized infrastructure with spot capacity and autoscaling; lowered cost by ~20% while maintaining SLOs.

Software Development Engineer II, AWS and Prime Video at Amazon

December 1, 2022 - September 30, 2025

Built customer-facing APIs for a greenfield AWS product on ECS Fargate, DynamoDB, and CloudFormation across regions. Delivered telemetry and authentication services for Prime Video and Freevee; improved data consistency and accuracy by ~90%. Worked on SDKs for Smart TVs, Xbox, and PlayStation to optimize performance and compatibility at scale.

Full Stack Engineer at Tessian

February 1, 2020 - September 30, 2025

Migrated the core product UI from Ruby on Rails to React; shipped dashboards and data visualizations. Introduced a Node.js BFF architecture to simplify APIs; improved response times and stability. Adopted Storybook for reusable components; reduced frontend delivery time by ~25%.

Software Engineer at Hermes BorderGuru

June 1, 2018 - September 30, 2025

Built APIs and SDKs for cross-border logistics including labeling, tracking, and webhooks. Shipped a React Native app for barcode scanning and tracking; around 20% efficiency gain in warehouses.

Product Development Engineer at Qubit

August 1, 2017 - September 30, 2025

Built a React reporting tool with virtualized lists for large datasets; around 4x faster rendering.

Co Founder and Lead Engineer at Holygon (Pvt.) Limited

January 1, 2016 - September 30, 2025

Co-founded a consultancy; led 8 engineers delivering web and mobile products end to end. Managed discovery, estimation, execution, and deployment across clients.