Full-time parenting — Career break
April 2026 — Present
Career break from active Goldman Sachs duties, focused on full-time parenting and four projects — Snapper, hestia, Vesta, and rdsclock — spanning trading infrastructure, cloud-free smart-home control, native iOS, and FM/RDS time recovery.
Vice President, Software Engineering — Goldman Sachs
October 2022 — Present
Engineering leadership for treasury, risk, and regulatory platforms; on a career break from active duties since April 2026.
Liquidator — Klatt OÜ
July 2024 — July 2025
Wound down an Estonian open-source and fintech consulting company.
Board Member — Klatt OÜ
July 2022 — July 2024
Founded and operated an Estonian open-source and fintech consulting company.
Data Engineer (Contract) — Goldman Sachs
January 2022 — September 2022
Production data-integrity and migration controls for firmwide datasets.
Infantry Soldier, Cyber Security Detachment — Polish Territorial Defence Forces
February 2022 — August 2023
Concurrent territorial service focused on cybersecurity, threat analysis, and incident response.
Software Engineer — Susquehanna International Group
October 2018 — October 2021
Worked for Nellie Analytics, SIG's independently operated sports-analytics and betting venture, while under contract to SIG.
Consultant — Mastercard
April 2018 — October 2018
Researched blockchain technologies and optimized systems integration.
Software Test Engineer, ETF Desk — Susquehanna International Group
October 2013 — April 2018
Built automated test infrastructure for ETF trading and market-making systems.
Senior QA Consultant — Rakuten Kobo Inc.
January 2013 — August 2013
Extended QA frameworks and streamlined test workflows.
QA Consultant — Verizon Business
October 2012 — February 2013
Evaluated security tools and PKI systems.
Senior QA Engineer — Rakuten Kobo Inc.
May 2012 — October 2012
Validated cross-platform applications, payments, and authentication.
Senior QA Engineer — AOL
June 2011 — May 2012
Automated workflows and conducted performance testing.
Senior Test Engineer — NewBay Software
May 2010 — June 2011
Managed test networks and developed high-scale QA tools.
Director — Klatt Management Services Limited
June 2008 — June 2011
Operated an umbrella company delivering consulting services to Sun Microsystems and other technology clients.
Independent Consultant — Sun Microsystems
September 2008 — March 2009
Developed Java VM components and integrated them with native hardware.
Testing Manager — O2
October 2007 — March 2008
Optimized SQL and ETL processes and supported BI systems.
Software Test Engineer — Lionbridge Technologies, Inc.
June 2005 — September 2007
Developed testing tools for mobile platforms.
This career break is dedicated to full-time parenting while building Snapper — an independently built, AI-assisted trading and market-data platform with multi-operator workflows. The platform handles cryptocurrency and commodity market data, paper execution, live-execution adapters, and multi-strategy backtesting on a single bitemporal data model. A cross-asset risk framework applies uniformly across BTC perpetuals, WTI futures, and gold. Three public components are published under the MIT License (snapper-mcp, snapper-frontend, and snapper-ios); the core backend remains private. The work also includes three open-source projects: hestia, a cloud-free smart-home server built with Python/aiohttp and SQLite around a clean-room reimplementation of Keemple's cleartext 0x7e binary protocol, with a 433 MHz RTL-SDR feeder, a dashboard in 45 languages, and 100% line and branch coverage (AGPL-3.0); Vesta, a native SwiftUI iOS client for hestia with API types generated from its OpenAPI contract, live SSE updates, automatic reconnection, multi-gang control, 45 languages, full right-to-left support, and a comprehensive unit-test suite (Apache-2.0); and rdsclock, a pure-Python passive RDS Clock-Time receiver that recovers UTC from FM radio when GPS and NTP are unavailable (Apache-2.0).
Selected Highlights
- Built Snapper — an independently developed, AI-assisted trading and market-data platform with a bitemporal data model; ran multi-strategy, cross-asset backtests on BTC perpetuals, WTI futures, and gold under one risk framework.
- Maintained 100% test coverage on the core backend with unit and end-to-end suites; built a ZeroMQ publish/subscribe runtime and production observability covering process metrics, database statistics, retention scheduling, and notifications.
- Built an MCP-based, multi-model AI review system that orchestrates Claude, GPT, Gemini, and Copilot reviewers across the codebase.
- Published three MIT-licensed Snapper components: snapper-mcp (TypeScript/npm), snapper-frontend (React 19 + Vite), and snapper-ios (Swift); the core backend remains private.
- Built hestia — cloud-free local control for Keemple smart-home devices via a clean-room reimplementation of their cleartext 0x7e binary protocol; transparent-proxy and cloud-replacement modes. Python/aiohttp + SQLite, 433 MHz RTL-SDR sensor ingestion, a TypeScript/Vite dashboard in 45 languages, and 100% line and branch coverage. (AGPL-3.0)
- Built Vesta — a SwiftUI iOS client for hestia, with API types generated from its OpenAPI contract; live SSE updates with automatic reconnection, multi-gang control, 45 languages with full RTL support, and a comprehensive unit-test suite. (Apache-2.0)
- Built rdsclock — a pure-Python passive RDS Clock-Time receiver that uses multi-station consensus to recover UTC from FM broadcasts when GPS and NTP are unavailable. (Apache-2.0)