About

Work Experience

• Senior Software Engineer, Jenius Bank

  Mar, 2023 - Mar, 20263 years

  Acted as the Subject Matter Expert (SME) for a critical digital banking platform providing account insights and real-time transaction data.

  • Contributed to the development and maintenance of a complex, modular application architecture in React, utilizing multiple repositories integrated as a unified web application.

  • Collaborated on feature development and continuous bug resolution, directly contributing to application stability and an optimized user experience.

  • Maintained and enhanced the centralized React component library, ensuring components were reusable, consistent, and aligned with design specifications.

  • Translated high-fidelity design mockups into pixel-perfect styles while providing technical input to improve usability.

  • Managed application security by configuring and enforcing Content Security Policies (CSP) via Amazon CloudFront, controlling HTTP security headers at the CDN layer across the web application.

  • Stored and served application media assets using Amazon S3, ensuring reliable and scalable static resource delivery.

  • Oversaw application health and performance monitoring using Splunk, efficiently addressing issues and production bugs.

  • Utilized Azure Pipelines for CI/CD, managing build pipelines and orchestrating stable deployments across environments, with codebases hosted in Azure Repos.

  • Participated actively in agile ceremonies and retrospectives to identify technical bottlenecks and improve overall workflow efficiency.

• Software Engineer, Rhumbix

  Oct, 2021 - Dec, 20221 year 2 months

  Lead developer tasked with rebuilding the external website from scratch using NextJS and a headless CMS.

  • Increased performance by 64% and decreased bounce rate by 50% by utilizing NextJS and architectural optimizations.

  • Generated leads by integrating Pardot, Intercom, Zoominfo, and Google ReCaptcha.

  • Dynamically generated ~1000 pages of content using legacy data and NextJS static site generation (SSG).

  • Used hooks and integrated Auth0 to securely allow content creators to push content and redeploy the site.

• Software Engineer, Aleph Incorporated

  Feb, 2019 - Oct, 20212 years 8 months

  Developed nine responsive websites utilizing diverse stacks including React, NextJS, GraphQL, and PHP.

  • Created nine responsive websites with stacks utilizing combinations of React, NextJS, GraphQL, Redux, Apollo, Express, and PHP.

  • Developed protected endpoints using NextJS and Express to securely save user data and preferences.

  • Utilized AWS Lambda serverless functions to proxy Auth0 API keys server-side, ensuring credentials were never exposed to the client.

  • Created reusable mixins and variables with SASS to style websites to pixel-perfect representations of designs.

  • Spearheaded the implementation of TypeScript and E2E tests using Nightwatch, and automated the process to improve development time.

Projects Experience

• Mitey

  - Present

  A local, Claude-like AI code assistant — small but mighty. Scans a local codebase, creates semantic embeddings for deep searching, and provides a web interface to chat with your code using a fully local LLM stack.

  • Architected a hybrid RAG search pipeline combining HNSWLib vector embeddings for semantic similarity with exact keyword matching, merging results using the Reciprocal Rank Fusion (RRF) pattern for higher-quality context retrieval.

  • Implemented a local vector index (.mitey_index) that persists embeddings to disk, enabling lightning-fast semantic queries like 'Where is the auth logic?' without re-scanning the entire codebase on each run.

  • Orchestrated context-aware chat using LangChain and the Vercel AI SDK, automatically injecting relevant file contents into the LLM context window at query time.

  • Designed the tool to be fully portable — runnable from any project directory via npx mitey — with .gitignore-aware scanning to exclude irrelevant files.

  • Prototyped the limits of local LLM performance using qwen2.5-coder:7b, demonstrating a viable private, zero-cost alternative to cloud-based code assistants.

  • https://github.com/pungprakearti/mitey

Skills

Education

Volunteer Work