Radek Tkaczyk
Senior Scala Developer at Trumid
Warsaw, Masovian Voivodeship, Poland
Summary
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Senior🎓
Top SchoolRadek Tkaczyk is a Senior Scala Developer with 11 years of professional experience, based in Warsaw, specializing in high-quality, scalable backend systems and microservices. He has a long history with Scala (since 2012) and has delivered production-critical work across finance, blockchain, and fraud-detection domains using technologies like Akka, ZIO, Kafka, gRPC, Kubernetes and PostgreSQL. At IOHK he implemented an Ethereum Virtual Machine for Mantis and contributed to rigorously tested, audited open-source blockchain clients and testnets, blending research-led development with production deployment. Radek is comfortable migrating legacy side-effecting code to purely functional designs, writing formal specifications, and collaborating closely with DevOps on reproducible deployments using Nix, Terraform and AWS. He brings a quality-first mindset demonstrated by systematic testing, RFC-driven design, and recurring roles in code review and technical recruitment. An understated strength is his ability to operate autonomously across time zones while mentoring peers and improving engineering processes.
11 years of coding experience
10 years of employment as a software developer
Warsaw University of Technology
English, Polish
Github Skills (32)
scala10
ethereum10
blockchain10
pow9
solidity7
cryptocurrency7
scalatest7
yellow7
smart-contracts6
scalac5
scalapb5
testing4
functional-programming4
ethereum-classic4
bazel-rules4
Programming languages (10)
Github contributions (5)
ScalaConsultants/Scorex
Oct 2016 - Nov 2016
Contributions:35 commits, 27 PRs, 23 pushes in 1 month
scorex
input-output-hk/mallet
Jun 2018 - Feb 2021
Contributions:5 reviews, 30 commits, 24 PRs in 2 years 8 months
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