Timeline

Roles newest first, with the work nested under each employer. Independent open source and writing sit alongside the years they overlap. Portfolio mosaic.

2010–present · current · New York

RBC Capital Markets / Finance IT

Distinguished Engineer · Managing Director · Head of AI and Architecture for Finance IT

Technical leadership for Finance IT and Capital Markets platforms — architecture, AI/ML adoption, post-trade, supervision, and shared services.
- Role · 2024–present Current mandate — Finance IT modernization & AI Technical ownership of GL migration and Finance IT AI/modernization.
- Built · 2024–present Enterprise Reconciliation Service In-house ML + GPU matching reconciliation displacing vendor products.
- Built · 2024–present Trade Expense & Agentic Invoice Processing Agentic invoice processing modernizing trade expense; large vendor displacement.
- Built · 2023–present Central Access Control for Capital Markets Centralized application access management for 1,000+ apps and services.
- Built · 2023–present Global Market Supervision Event-driven supervision with ML/agents for SEC, FINRA, UK, EU reporting.
- Built · 2023–present Market Access & Trade Limits (Rule 15c3-5) Centralized ML automated trade limits across OMS estate.
- Built · 2020–present ML Pricing Service — Munis & Credit Derivatives Real-time fair-price ML for ~1.5M unique bonds; beats competitor evals daily.
- Ran · 2018–present Architecture for Operations Modernize reporting, monitoring, confirmation/settlement; oversee ops development and vendors.
- Ran · 2017–present R&D for Technology — inner source & OSS stewardship Blockchain/crypto/ML R&D plus inner-source and open-source stewardship.
- Ran · 2016–present Shared Operations Services portfolio UI platforms, reporting, queuing, notifications, FAS, T+1, trade repository.
- Ran · 2010–present Engineering organization — scale and operating model Run a multinational engineering organization with ~$30M budget.
- Built · 2010–present Language & platform engineering adoption Introduced Python and Elixir; delivered distributed compute, FaaS, logging, trading cores.
- Ran · 2020–2023 Cash Management Bank — 5th-generation transactional core Head of engineering for RBC’s new transactional cash-management bank: virtual accounts, liquidity, payments rails, ERP integrations, KYC/KYB, document store.
- Built · 2019–2019 Shared Data Services — discoverable bank-wide data fabric Re-architected data infrastructure toward discoverable, addressable, trustworthy, self-describing, interoperable data with a single schema-driven interface.
- Built · 2017–2018 On-prem FaaS (Lambda) and SNS-style notification Forked/adapted OpenWhisk into bank FaaS then rewrote with streamed-event triggers; built AWS-SNS-like notification used by 90+ apps.
- Built · 2015–2018 GPU model port — Numba/Python for pricing & risk Ported heavy C++ model estate toward GPU (Numba Python / later Elixir NX), cutting equipment and data-center cost.
- Built · 2010–2010 GPU Cuda Counter Party Risk Ported heavy C++ models onto CUDA for calculating counter party risk.
Alongside
- ex_drone — BEAM-native drone control · Open source · 2026–present
- Programming Drones with OTP (series) · Authored · 2026–present
- Encrypt Once, Decrypt Many — tholos-pq series · Authored · 2025–present
- ex_arrow — Native Apache Arrow for the BEAM · Open source · 2025–present
- ex_data_sketch — streaming data sketches · Open source · 2025–present
- ex_datalog — Datalog rules engine for Elixir · Open source · 2025–present
- ex_memory — local-first memory for LLMs · Open source · 2025–present
- ex_systolic — systolic array / spatial dataflow simulator · Open source · 2025–present
- ExZarr — chunked N-dimensional arrays · Open source · 2025–present
- tholos-pq — post-quantum multi-recipient encryption · Open source · 2025–present
- Aegis — Zig zkML miner for Bittensor (Apple Silicon) · Open source · 2024–present
- Nimalana — Nim Solana validator · Open source · 2023–present
- Bloomberg Quant Seminar talks · Authored · 2015–2017
2012–2015

Infinigon Group

Head of Development

Led development for crypto custody trading and ML analytics platforms.
- Built · 2012–2015 Cross-exchange custodial crypto trading platform Custodial cross-exchange crypto trading platform (BTC Terminal lineage).
2007–2010

Credit Suisse

Contractor, Commodities

Commodities risk, trade repository, and market data services.
- Built · 2007–2010 Commodities risk, repository & market data Risk system for complex commodities; trade repository and market data.
Alongside
- Financial Algorithms Cookbook · Authored · 2007–2007
2007–2007

JPMorgan

Contractor, Energy Trading Systems

Athena platform, FIX engine, exchange gateways, counterparty risk performance.
- Built · 2007–2007 Athena energy trade feeds — framework, CME/ICE, ops tooling Trade-feed framework that collected, filtered, and processed energy deals into JPMorgan’s Athena Python analytics platform, plus CME and ICE FIX gateways, reconciliation, profiling, and a shared alerting stack.
2006–2007

Zingy

MD, Head of Mobile Development

MD, Head of Mobile Development in New York: 50+ carrier-deck apps across 27 carriers, including MapQuest Mobile, eBay Mobile, New York Times Mobile, and NBC/NBA/NFA/NHL fantasy gaming.
- Ran · 2006–2007 MD, Head of Mobile Development — carrier decks and top US titles MD, Head of Mobile Development in New York: owned development, QA, support, and operations for 50+ mobile applications across 27 carriers, five major platforms and 70+ minor ones, six billing systems and four DRM systems. Client binaries were typically under 64K on handsets often below 40 MHz; carrier compliance testing made post-release upgrades expensive, and an app that fell off the carrier deck did not earn. Coverage across platforms, carriers, and handsets is why MapQuest Mobile, Vindigo City Guide, Moviegoer, GuysStuff, and Celebrity stayed in the US top ten.
Alongside
- Phonescript — PostScript on J2ME/Brew/Symbian · Open source · 2006–2006
2004–2006

ICAP

Front-End Development Leader

Led ICAP’s in-house BrokerTec fixed-income front-end team in New York: Swing trading app, iConnect, lightweight emerging-markets client, config-driven GUI framework, BlackBerry POC, and Jabber trading services.
- Ran · 2004–2006 Front-End Development Leader — BrokerTec fixed income Set up and managed ICAP’s in-house front-end development team in New York for the BrokerTec fixed-income trading system: the mainstream Java/Swing app with Random Walk, iConnect conversion, a sub-10 MB emerging-markets web client, a config-driven GUI framework (six-week front-end), BlackBerry proof-of-concept trading, Jabber/async-j backend services, and Python market-conformance tools.
1997–2004

NYSE / SIAC

Director, Specialist Trading Services

Market surveillance, stock information servers, regulatory reporting, early Python trading services for specialists.
- Built · 1997–2004 Front-end Technical Director — NYSE specialist systems & surveillance Front-end Technical Director and lead developer for NYSE/SIAC specialist systems in New York: a Python log-analyzer framework on the trading-floor logs, a Java log browser with embedded Python, a one-month Market Share XML-RPC service into Specialist Portfolio, a Tandem-backed stock-information pub/sub server, the first NYSE XML regulatory feed, and Swing/AWT Specialist Portfolio clients with trade-detail mining and manual trades.
1996–1997

IBM Research (Zurich)

Contractor

Mobile phone JVM work at IBM Research labs.
- Built · 1996–1997 IBM Research — mobile phone JVM Coded the mobile-phone JVM at IBM Research labs near Zurich.
Alongside
- Python Server Objects (PSO) — early Python web framework · Open source · 1996–1998
1996–1997

West LB (Westdeutsche Landesbank)

Consultant, VAR

VAR team — maturity calculators, swap/options pricing, Summit converters, portfolio tools.
- Built · 1996–1997 West LB VAR — pricing & portfolio tools VAR team work on maturity calculators, swap/options pricing, Summit converters, portfolio tools.
1995–1997

Ericsson

Contractor, Telecom Switches

Remote telecom switch management systems.
- Built · 1995–1997 Remote telecom switch management Remote management system for telecom switches.
1994–1996

European Parliament

IT Advisor / Consultant, Lead

Internet/intranet services and large-scale multilingual workflow for the European Parliament.
- Built · 1994–1996 European Parliament multilingual workflow & web services Large-scale internet workflow and document systems handling 100k+ documents/day across 11 languages.
1995–1995

Caesars Casino

Contractor

Built an early internet casino; early cyber-currency work with Marita Bank (WebCheck).
- Built · 1995–1995 Caesars — first internet casino & WebCheck Commissioned internet casino; rewrote ~40k LOC C++ to ~4k LOC Python; early cyber-currency (WebCheck) with Marita Bank.
1993–1994

AAH Meditel

Consultant, Leader

Led Unix/C++ patient registration and records system used widely across UK primary care.
- Built · 1993–1994 AAH Meditel patient registration & records Led Unix/C++ patient registration and records product used widely in UK primary care.
1993–1993

Apple

Newton tools / languages

Programming languages and tools for the Newton PDA community.
- Built · 1993–1993 Apple Newton — languages and developer tools Programming languages and tools for the Newton PDA developer community; NewtonSmalltalk port.
1987–1992

Symantec (Zortech)

Project Manager

C++ debugger contributions; project manager for numeric libraries (Num++ / Fin++).
- Built · 1987–1992 Zortech/Symantec — C++ debugger & numeric libraries Contributed to Zortech C++ debugger; project-managed Num++ / Fin++ numeric libraries.
Alongside
- Maker / systems roots — Python evangelism & industry firsts · Interest · 1990–present
1988–1990

Ferranti

Contractor

Real-time OS work for the Lynx helicopter program.
- Built · 1988–1990 Ferranti — Lynx helicopter real-time OS Designed and developed real-time operating system components for the Lynx helicopter program.
1988–1990

Reuters International

Consultant, Lead

News and image server for the RNT system.
- Built · 1988–1990 Reuters RNT news & image server Developed news and image server for the Reuters RNT system.
1986–1988

British Telecom

Developer

Telecom Gold payments services and Hope functional language work.
- Built · 1986–1988 British Telecom — Telecom Gold & Hope language Telecom Gold credit-card transaction handling and Hope functional language work.
1984–1986

Barclays

Developer / Director

Sole developer of Barclays Topic-based equities trading system.
- Built · 1984–1986 Barclays Topic equities trading system Sole developer of Barclays Topic-based equities trading system.
1980–1984

Atari

Developer

Arcade and ST games ports; earlier Kee Games arcade titles.
- Built · 1980–1984 Atari — ST applications Build bundled Atari ST accessory software.
- Built · 1980–1984 Atari — arcade & ST games Arcade and Atari ST game ports and titles (Kee Games era through ST division).
1982–1983

Unilever

Consultant

PDP-11 control software for die milling / robotics.
- Built · 1982–1983 Unilever — die milling robotics control Fortran/Macro-11 on PDP-11s controlling die milling machines; later fuzzy-logic control work.
1978–1980

Electric Coin Company

Programmer

Slot and video poker machine programming; lottery print driver.
- Built · 1978–1980 Electric Coin Company — slot & video poker machines Z80 machine-code programming for slot/video poker machines; PDP-8 lottery print driver.

Other work