# Justin H.

> Software Engineer

Location: London, England, United Kingdom
Profile: https://flows.cv/justinh

7+ years of expertise in building sophisticated web applications in financial industry, specialising in modern React ecosystems with and TypeScript. Proven track record of architecting scalable frontend solutions, from crafting risk report softwares to implementing high-speed trading systems. Distinguished experience in optimising application performance, implementing advanced caching strategies, and ensuring seamless services.

## Work Experience
### Software Engineer @ Point72
Jan 2025 – Present | London, United Kingdom

### Front End Engineer @ SigTech
Jan 2023 – Jan 2024 | Greater London, England, United Kingdom
• Architected an in-house design system using React, TypeScript, and Tailwind, creating reusable components that reduced development time.

• Involved in platform's frontend re-write with React 18, Vite, and React Query establishing robust data fetching patterns.

• Directed frontend development of an RAG financial web client, engineering data visualisation streamed from WS connection. Implemented efficient prompt handling and intuitive.

• Created comprehensive frontend documentation and component library using Storybook. Established coding standards and architectural pattern with S.O.L.I.D principles in mind.

• Optimised development workflows through rapid prototyping and efficient CI/CD pipelines. Implemented feature flags and automated testing.

### Frontend Developer @ iwoca
Jan 2021 – Jan 2023 | London, England, United Kingdom
• Optimised the end-to-end experience for introducers, enhancing processes from initial sign-up to effective customer account management through the introducer portal.

• Integrated Next.js into an existing vanilla React-based codebase, improving performance and development efficiency.

• Initiated and developed a bespoke internal design library, standardising UI components and improving design consistency.

• Developed a comprehensive developer portal, serving as a centralised hub for API users and improving accessibility to resources.

• Created a TypeScript client library to auto-generate types from API responses, significantly increasing coding efficiency and boosting the number of PRs created during sprints.

### Frontend Developer @ Unknown
Jan 2019 – Jan 2021 | Seoul, South Korea


## Education
### Bachelor of Science - BSc in Computer Science
Queen Mary University of London

### High School Diploma in A-Level
Lancing College

### Papplewick Ascot, Preparatory School


## Contact & Social
- LinkedIn: https://linkedin.com/in/justinhwang94

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Source: https://flows.cv/justinh
JSON Resume: https://flows.cv/justinh/resume.json
Last updated: 2026-04-05