# Pawel Lach

[@LachPawel](https://hacklab.so/LachPawel)

Pawel Lach is Developer Relations Engineer at ai\-coustics, based in Berlin. No AI coding activity was synced in the last 30 days.

Software engineer, educator and developer content creator focused on web technology and Voice AI\. Builds TypeScript/React tools and tutorials\.

Location: Berlin

Joined: 2026-09-01

1 followers · 3 following

## Links

- [GitHub](https://github.com/LachPawel)
- [LinkedIn](https://linkedin.com/in/pawelach)
- [X](https://x.com/grungecoder)

## AI usage (All time)

Total tokens: 1,749,396,660

| Harness | Tokens | Share | Most-used model |
| --- | ---: | ---: | --- |
| Claude Code | 1,577,474,842 | 90.2% | claude\-opus |
| Codex | 171,921,818 | 9.8% | gpt\-5 |

## Accomplishments

### [BUN\-HTMX\-Full\-Stack\-App\-Template](https://github.com/LachPawel/BUN-HTMX-Full-Stack-App-Template)

Full\-stack app template based on HTMX, server\-side components, SQLite, Elysia and Bun, written in TypeScript \(2023\)\. Pinned public repository on the member's own GitHub account; the README gives the same description\.

### [Rhetor](https://github.com/LachPawel/Rhetor)

AI pitch coach that interrupts speakers in real time, written in TypeScript \(2026\)\. Public repository on the member's own GitHub account\.

### [QuantumFit\-Gemini\-Vertex](https://github.com/LachPawel/QuantumFit-Gemini-Vertex)

Node\.js Express web service that calls Gemini through the Vertex AI library, per its README \(2023\)\. Pinned public repository on the member's own GitHub account\.

### [Fine\-tune a ML Model under 50 lines of code with FastAI](https://dev.to/pawel)

Article dated 2024\-01 on fine\-tuning a machine\-learning model with FastAI, listed on the dev\.to profile linked from the member's GitHub profile\.

## Experience

### Developer Relations Engineer — ai\-coustics

2026\-04 – Present

Berlin, Germany

Developer\-relations role from April 2026; the headline specifies Voice AI\. Detailed responsibilities are not supplied\.

### Senior Software Engineer — ING

2024\-07 – 2026\-03

Poland

React application with self\-reported 1000\+ active users; accessible/responsive UI, Spring Boot/PostgreSQL features, frontend/backend tests, AI integration, visualizations and cloud deployments\. Stack includes TypeScript, TanStack Query, shadcn, Tailwind, Kotlin/Java, Azure/GCP, Docker, Gemini, Power BI, Jest and Storybook\.

### Software Engineer — MicroStrategy

2021\-10 – 2024\-02

Warsaw, Poland

React components and MicroStrategy Lightning Platform; personalized Lightning Network integrations, unit tests/CI/CD, documentation, UI/UX and technical architecture\. Tools include JavaScript/TypeScript, Jest, SQL, MongoDB, GraphQL, MUI and AWS\.

### Web Developer — MasterBorn Software

2021\-07 – 2021\-10

Poland

Next\.js project with CMS API through server\-side rendering; API sorting/filtering/restructuring, mobile\-responsive layouts, peer code review and Scrum\.

### English Language Lecturer — Piri Reis Üniversitesi

2018\-09 – 2021\-08

Istanbul, Turkey

First\-year ESL instruction; original learning resources, MS Teams instructional videos and online\-teaching support\. Built grading, portfolio\-scoring and essay\-assessment apps using JavaScript/HTML/CSS, with MS 365 and video tools\.

### English Language Instructor — Bahçeşehir Uğur Eğitim Kurumları

2017\-08 – 2018\-07

Istanbul, Turkey

Native/skills teacher delivering Content and Language Integrated Learning \(CLIL\)\.

### English Language Instructor — Okyanus Kolejleri

2016\-08 – 2017\-07

Istanbul, Turkey

Native/skills teacher focused on listening and speaking at Cambridge KET/PET levels\.

### English Language Instructor — American Culture Language Schools

2016\-01 – 2016\-06

Karabük, Turkey

Speaking classes for university and high\-school students\.

### English Language Instructor — American Life

2014\-09 – 2015\-10

Karabük, Turkey

English instruction chiefly for university students at A2–B2 levels\.

## Education

### Master’s Degree, Computers and Educational Technology — Kocaeli Üniversitesi

Programme listed for 2019–2021; exact months not supplied\.

### Bachelor’s Degree, English — Karabük Üniversitesi

Programme listed for 2013–2016; exact months not supplied\.

### English Philology Studies — PWSZ Włocławek

Study listed for 2012–2014; no separate awarded degree inferred\.

### Automotive Technician — Public Secondary Technical\-Mechanical School Complex in Włocławek

Automotive\-technician programme listed for 2008–2012; exact months not supplied\.