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Damian Tworek

@damiantworek

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Kotlin Multiplatform engineer at Lekta AI who built a voice AI SDK and call-centre app with WebRTC calling.

Poland

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At Lekta AI, I designed and built a Kotlin Multiplatform SDK that adds voice AI assistants to enterprise Android and iOS apps, with a shared Compose Multiplatform UI. I also built a call-centre agent app with WebRTC calling and Genesys integration, and helped raise production FAQ routing accuracy from 71.5% to 97.1%.

At ActiveCampaign, I started the migration to Kotlin Multiplatform and reduced Android app cold start from 18 seconds to 2 seconds. I built WhatsApp messaging and the Android client for Active Intelligence, and shipped SMS messaging to all users.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer · Kotlin Multiplatform

Current

LektaAI

Jan 2025 - Present (1 year 9 months)

Designed and built a Kotlin Multiplatform SDK for voice AI assistants, and developed a call-centre agent app with WebRTC calling. Worked on the platform backend in TypeScript and Python, and improved CI test run times.

Kotlin Multiplatform Compose Multiplatform WebRTC TypeScript Python Kubernetes Helm CI CD LLM Benchmarking

Android Engineer

ActiveCampaign

Jun 2025 - Oct 2026 (1 year 4 months)

Started migration to Kotlin Multiplatform, cut cold start from 18s to 2s, and built WhatsApp and SMS messaging into the CRM app. Developed the Android client for the AI assistant and ran Google Play releases.

Kotlin Kotlin Multiplatform Jetpack Compose Coroutines Flow ROOM Paging3 Koin COIL Gradle Kotlin DSL Google Play CI CD

Software Engineer

AVSystem

Oct 2024 - Jan 2025 (3 months)

Built backend and frontend features in Scala, Kafka, MongoDB, and Angular for an asset-monitoring product.

Scala Kafka MongoDB Angular

Android Developer (Intern to Regular)

SpotOn

Jul 2022 - Aug 2024 (2 years 1 month)

Built the reporting module in Kotlin Multiplatform and maintained the Python FastAPI reporting service. Led the Item Availability feature and cut regression testing time by 50% with parallel device tests.

Kotlin Multiplatform Python fastAPI GitHub Actions Testing

Android Developer

Freelance

Sep 2020 - Jul 2022 (1 year 10 months)

Built and shipped Android apps for clients.

Android

Education

Degrees, certifications, and relevant coursework

AGH University of Science and Technology

M.Eng., Computer Science

2024 - 2025

Pursued a Master of Engineering in Computer Science with a thesis on automatic diagnosis of prostate cancer in histopathological images using PyTorch and multi-GPU training on 350GB of slides.

AGH University of Science and Technology

B.Eng., Computer Science

2020 - 2024

Earned a Bachelor of Engineering in Computer Science with a thesis on RTPeeker, an open-source Rust tool for analyzing RTP voice and video streams, published on crates.io.