Payment Plan Advisor

An AI-powered chatbot built for customers facing financial difficulty. The chatbot assesses each customer’s individual circumstances and proposes a tailored, realistic payment plan to help them manage debt — combining conversational AI with human specialist oversight to ensure fairness, compliance, and support for vulnerable customers.

• Served as Technical Lead across a cross-functional team of 5 engineers, 2 product owners, and a solution architect — driving technical direction from high-level architecture down to implementation details.
• Owned end-to-end DevOps: designed and managed CI/CD pipelines, infrastructure-as-code, and cloud deployment on AWS, ensuring reliable and repeatable delivery.
• Architected an event-driven microservices system underpinning the chatbot, orchestrating services via asynchronous events to decouple components, improve resilience, and support independent scaling — with Amazon Bedrock Agents coordinating multi-step reasoning and tool use to assess customer circumstances and generate personalised payment plans.
• Built Full Conversation Visibility for the payment team, surfacing complete chat history to reduce time-to-context and enable faster, better-informed specialist decisions.
• Engineered a self-serve provisional payment plan flow allowing customers to draft their own plans, which are then reviewed and approved by a specialist before going live.
• Integrated assisted account actions — in-flow payment submission and meter reading capture — directly within the chat experience, removing the need for customers to switch channels.

OptiCharge

Migrated eligible customers to a new tariff offering reduced electric vehicle charging rates during off-peak hours.

• Led the micro frontend architecture in React, integrating modular UIs into a legacy monolith to modernise the platform and reduce cross-team deployment coupling.
• Designed and built a Go-based GraphQL simulation tool to mock and validate APIs with authentic data, cutting backend dependencies and accelerating the development lifecycle by 10%.

Bequest

Personalised pay-as-you-go life insurance and online wills.

• Integrated the Stripe payment gateway using Go, adding a new monetisation channel that increased revenue by 10%.
• Architected a multi-tenant white-labelling system using Go, Docker, and AWS EKS, enabling the business to offer customised solutions to clients and attract new business.
• Automated the database migration process in Go, reducing time spent on manual migration tasks and increasing development speed by 10%.
• Improved web performance by 20% by refactoring the API consumption module in React and Go, measured by enhanced response times.
• Enhanced the event-driven microservices architecture using Go, improving platform throughput, resilience, and scalability across services.
• Built dynamic React environment variable injection, enabling the app to deploy across multiple environments without code changes.

ChatGPT Discord Bot

A Discord bot enabling real-time AI-powered natural language conversations using OpenAI’s ChatGPT model.

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• Built a ChatGPT-powered Discord bot in Go integrating the OpenAI API, enabling real-time conversational interactions to automate and enhance user engagement directly within Discord servers.

Cool X Wallet

Credit card-sized Bluetooth hardware wallet to secure customers’ crypto assets.

• Engineered AWS Cloud HSM infrastructure at SBI, providing enterprise-grade secure key storage and cryptographic operations underpinning the hardware wallet.

CoolWallet S

Bluetooth hardware wallet for Bitcoin, Ethereum, Litecoin, XRP, Bitcoin Cash, and ERC20 Tokens — storing users’ private keys in a secure offline hardware device.

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• Implemented top-level security measures in JavaScript to protect crypto assets, contributing to over 100,000 wallet sales worldwide.
• Established a CI/CD pipeline to automate build and release workflows, improving delivery speed and reducing manual deployment errors.
• Built and maintained the React Native mobile application, delivering a consistent cross-platform wallet management experience across iOS and Android.

Spark API

Forked from kyuupichan/electrumx

Exposes blockchain data via REST, enabling developers to interact with the blockchain programmatically.

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• Built REST APIs on ElectrumX to expose blockchain data and interactions, improving node sync performance by 20%.

Sygna Bridge

Compliance infrastructure bridging the virtual asset industry and mainstream finance, enabling VASPs to collect and exchange regulation-required transaction information.

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• Designed and established the AWS Serverless and Fargate infrastructure for Sygna, delivering highly scalable and maintainable REST APIs.
• Developed compliance web applications using JavaScript and asynchronous message queues, increasing user engagement by 15%.

Resumake

Resumake automatically generates elegant LaTeX resumes without requiring users to write any TeX code themselves.

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• Contributed a new resume template as an open-source addition, giving users a polished layout option that streamlines the process of creating a professional standout resume.