David Helkowski

Principal Engineer · Architect · Founder

The Short Version

I'm a software architect and developer who has spent 30 years building systems that work — and fixing systems that don't. I've written code that runs over a billion times a day at Amazon, built streaming servers from protocol specifications, replaced million-dollar failed vendor solutions with systems that actually met requirements, and founded companies from the ground up.

I'm not a narrow specialist. I operate across the entire technology stack: C and C++ at the bottom, Kubernetes and cloud infrastructure in the middle, and web applications and APIs at the top. When I join a project, I own it from architecture through deployment.

How I Work

I believe in building the simplest thing that solves the problem completely. I've seen too many organizations waste time and money on over-engineered solutions or under-qualified vendors. My approach is direct: understand what you actually need, design the right solution, and deliver it efficiently.

I work well independently. As a founder and CTO, I'm used to setting direction, solving blocking problems, and communicating progress clearly to non-technical stakeholders. You don't need to manage me — you just need to tell me what problem to solve.

About Dry Ark LLC

Dry Ark LLC was founded in 2020. Our flagship product, ControlFloor, is an enterprise iOS device farm platform used by companies to remotely control, test, and manage physical iOS devices at scale.

In addition to our product work, we offer consulting services to organizations that need expert engineering help — whether that's a database that needs optimizing, a platform that needs building, or a technical problem that nobody else has been able to solve.

Open Source

We believe in building in the open. Here are some of the projects we maintain and contribute to.

stf_ios_support

Central hub for iOS support in STF (Smartphone Test Farm). Connects all the components needed to run iOS devices in an open-source device farm. 163 stars on GitHub.

  • Go, Objective-C, Perl
  • iOS device automation and video streaming
  • VPN and remote deployment support

ControlFloor

System for controlling mobile devices remotely. The open-source foundation of our commercial device farm platform. 90 stars on GitHub.

  • Go-based server architecture
  • Real-time low-latency video streaming
  • Cross-platform: Linux and macOS

iosif

iOS command line interface written in C. Uses Apple's MobileDevice framework directly for maximum compatibility and future-proofing. 29 stars on GitHub.

  • Pure C, minimal dependencies
  • Device management, app install, syslog, tunneling
  • Foundation for the go-ios project

minibrew

Self-contained, portable Homebrew packages for macOS. No Homebrew, no Xcode, no internet at install time. Currently shipping Python 3.13 in a 13 MB DMG.

  • Fully offline installation in under 2 seconds
  • Install anywhere — not locked to /usr/local
  • Self-rebuilding: generate fresh DMGs on any Mac

Career Highlights

A track record of taking ownership, solving hard problems, and delivering results at every scale.

2020 — Present
Dry Ark LLC
Founder / CEO / CTO — Built ControlFloor iOS device farm platform from the ground up. Secured clients, hired team, managed product development.
2019 — 2020
T-Mobile
Lead Engineer — Device matrix maintenance and feature development. Added iOS support to OpenSTF. AWS infrastructure and containerization.
2018 — 2019
SUSE
Senior Engineer — Developed CaaSP (Kubernetes distribution). Led Dex authentication integration. Upstream Kubernetes contributions.
2017 — 2018
Carbon State (Founder)
Founder / CTO — Built entire ECM technology stack: custom HTTP server, XML parser, application framework, DSL engine, and metaprogramming build system.
2015 — 2017
Amazon
Senior Engineer / Efficiency Specialist — High-performance logging across all retail platforms (1B+ calls/day). Optimization work saving tens of millions of dollars.
2014 — 2015
Bridgestone
Senior Engineer — Replaced Java BIRT reporting system with custom C++/Perl solution. Report time: 8 min to 10 sec. Full-stack Django development.
2013 — 2014
The Canton Group
Manager / Principal Engineer — Led department, client negotiations, contract bidding. FBI database integration for MD government. Security audits.
2012 — 2013
T. Rowe Price
Principal Engineer — Evaluated and replaced $1M vendor DCIM solution. Architected and led development of replacement system.
2011 — 2012
Systems Alliance
Lead Engineer — Built H.264 streaming server from spec. Created structured content CMS feature. Led automated Selenium testing.
2005 — 2011
Sinclair Broadcast Group
Principal Engineer — 6 years building ECM, ticketing, and event tracking systems. Deep expertise in content management and enterprise platforms.

Core Technologies

Expert-level proficiency across the full stack, from bare metal to cloud.

Languages

C, C++, Go, Python, JavaScript/Node.js, Perl, Java, Ruby, Objective-C, Bash, SQL

Infrastructure

Docker, Kubernetes, Helm, Terraform, Ansible, SaltStack, AWS (EC2, RDS, DynamoDB, SQS), Nginx, Apache

Databases

MariaDB/MySQL, PostgreSQL, Oracle, SQL Server, SQLite, DynamoDB, Redshift, MongoDB

Platforms

Linux (RHEL, Ubuntu, SUSE, Debian, Arch), macOS, Node.js, Django, Rails, Spring, Tomcat

Security

Penetration testing, LDAP, OIDC, SAML, OAuth, OpenAM/Dex, Burp Suite, Wireshark, Nmap

Messaging & Data

nanomsg, ZeroMQ, Kafka, SQS, Avro, Hadoop, Spark, ELK Stack, Fluentd

Reverse Engineering

Deep experience analyzing undocumented protocols and binary formats using Ghidra and custom tooling. Reverse-engineered Apple's lockdown USB protocol to build iosif — the first open-source project to run XCTest properly outside of Xcode. Built a Ghidra MCP server for macOS and iOS RE workflows including dyld cache extraction and firmware decryption.

AI-Assisted Engineering

Two years of daily work with large language models for research, code generation, and automation. Deeply fluent with AI-assisted development workflows — using tools like Cursor to deliver complex, production-quality systems at dramatically accelerated timelines.

Let's Work Together

Whether you need a few hours of consulting or a long-term engineering partner, I'm ready to help.

Get in Touch