Open to opportunities

Asna Hassan

@asnahassan

Message

Full-stack Software Engineer in the UK building tax and payments products with TypeScript, React, and Node.js.

United Kingdom

Message

What I'm looking for

I’m looking to own end-to-end feature delivery in an agile product team—building reliable serverless backends and payment integrations, improving web/mobile performance, and helping customers with real tax compliance outcomes.

I’m a Full-stack Software Engineer with 3+ years building fintech products across tax technology and payments, from design discussions to deployment. I enjoy owning features end-to-end in small agile teams, especially where reliability, performance, and customer impact matter.

At TaxZap (Remote), I develop and maintain full-stack web applications for a UK tax technology platform serving Self Assessment customers. I built Making Tax Digital (MTD) compliance tooling, integrated the Revolut Checkout SDK for card payments, and delivered serverless backend services on AWS Lambda and S3 with IAM access control—also contributing to the mobile application with React Native across iOS and Android.

Previously, I worked on serverless fintech payment products with TypeScript using Cloudflare Workers and Azure Functions. I also supported data-focused work as a Junior Data Analyst, performing data acquisition, manipulation with Excel and SQL, and reconciliation, which helps me approach engineering with strong data accuracy and system reliability in mind.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Engineer

Current

TaxZap

Apr 2023 - Present (3 years 3 months)

Developed and maintained full-stack web applications for a UK tax technology platform serving Self Assessment customers. Built Making Tax Digital (MTD) compliance tooling and integrated Revolut Checkout for card payment handling, along with serverless AWS backend services and React Native mobile API integration.

S3 TypeScript React Full Stack REST APIs AWS Lambda AWS IAM Serverless Architecture Payment Integration React Native iOS Android Performance Optimization API Integration

TypeScript Software Engineer

Intergiro

Mar 2022 - Apr 2023 (1 year 1 month)

Developed fintech payment products using TypeScript within a serverless architecture. Built APIs for financial services using Cloudflare Workers and Azure Functions and collaborated with customers to deliver tailored API solutions.

TypeScript Serverless Architecture Cloudflare Workers Azure Functions API Development Backend Services

Trainee Software Developer

CodeNation

Jul 2021 - Dec 2021 (5 months)

Developed web applications using HTML, CSS, JavaScript, and React, and built REST APIs with Node.js. Worked with MongoDB and MySQL and used Git/GitHub with Agile (Kanban) in development teams.

NodeJS HTML CSS JavaScript React REST APIs MongoDB MySQL Git GitHub Agile Kanban Slack Trello Visual Studio Code

Junior Data Analyst

Deloitte

Aug 2020 - Mar 2021 (7 months)

Supported data acquisition and extraction from client accounting systems and performed data manipulation using Excel and SQL. Conducted data reconciliations and analyzed financial data to understand P&L and balance sheet insights.

Data Acquisition Data Extraction Excel SQL Data Manipulation Data Reconciliation financial data analysis P&L Analysis