CV

Archon Tech / Senior Front-end Engineer

Nov 2025 – Present · Copenhagen, Denmark

Joined as a frontend specialist and grew into full-stack and platform ownership across a research-led product group building on-chain financial-risk infrastructure. Work spans four distinct areas, all shipped as production software rather than prototypes.

Data platform and risk modelling.

• Contributed across a Go/Python/TypeScript monorepo indexing Ethereum and L2 state in real time, tracking DeFi lending and DEX positions, and computing required risk capital for institutional allocators.
• Built an independent data path reconciling the platform’s on-chain figures against a counterparty’s reported balance sheet, replacing per-request HTTP integrations with an indexed pipeline and eliminating a class of silent-degradation bugs.
• Supported the production rollout of a Monte-Carlo risk model and a capacity study measuring peak resident memory across nine markets.
• Root-caused and fixed two production incidents: a TimescaleDB hypertable configuration that defeated chunk pruning and pegged CPU, and a connection pooler OOM that desynchronised database connections mid-transaction.

Frontend architecture and a shared design system.

• Designed and built UIkit, a 17-package TypeScript/React toolkit, with 15 packages published: a Panda CSS design system, visx charting, a virtualised data grid, a schema-driven dashboard engine, and typed HTTP client and mock packages.
• Built the STL front end on UIkit, which is used across Archon’s products, prototypes and concepts.
• Added installable contributor guidance, task-specific agents and skills, generated documentation, and configuration and visual-regression checks.
• Found a charting barrel import that added 82 kB minified and restructured packages into lazy tiers, helping reduce a consuming application’s entry bundle from 1,004 kB to 80 kB without a hand-maintained chunk map.

Infrastructure, observability and reliability. Built AWS observability and paging for a production conversational-AI service: CloudWatch alarms and metric filters derived from request metrics and structured application logs, Slack incident paging on Lambda and Step Functions, uptime canaries, and a self-hosted Grafana platform. Tuned alarm thresholds to observed latency distributions. On the shared Kubernetes/GitOps platform, provisioned durable storage, workload identity and autoscaling capacity. Root-caused alert noise and failures, including quantifying that a staleness alert had been silently disarmed for weeks before rewriting it.

Language and systems research. Contributed to a typed logic and term-rewriting language engine, including semantics for the boundary between data and executable code. Built a compiler front end for a financial-specification language, plus a graph-backed API and web UI for browsing its knowledge graph with branch history, diffs and dependency visualisation. Built an event-sourced simulation platform to stress-test the engine at production-like scale; its real-time analytics dashboard reduced per-event processing cost by roughly five orders of magnitude.

Engineering practice. A consistent method runs through all of it: measure before and after and publish the numbers; reproduce a bug before fixing it; sabotage-test a fix by reintroducing each historical defect to confirm exactly the intended test goes red; and treat tooling (build reproducibility, CI gates, dev environments, AI coding-agent configuration) as infrastructure held to the same correctness bar as the product.

Most work at Archon Tech is under NDA and is described here at the level of the problem rather than the product; the projects below are the parts that are public.

Edge Delta / Senior Front-end Engineer

Apr 2023 – Oct 2025 · Copenhagen, Denmark

Led the transition of the core product from Angular to React, and the adoption of a shared component library to go with it.

The migration. Log search, charts, monitors and their modals moved behind feature flags rather than being replaced all at once. Routing and shared auth, organisation, access-check and flag services moved to React stores and hooks in stages; lint rules prevented new Angular dependencies and identified the remaining ones for retirement. The result was a standalone Vite app with its own environment setup, Sentry source maps and recovery for missing chunks after deploys. Migration details.

One set of types for both sides. Built Concord, generating JSON Schema, Zod validators and TypeScript types from Go struct tags so the web app validates data instead of casting it. Rolled it out across monitors, rehydrations, agent configs, patterns, stats, logs, knowledge, facets and Service Map, retiring roughly 100 hand-maintained models; CI fails if generated schemas drift. How the contract works.

Performance and maintainability. Reduced the entry bundle from 2,308.82 kB to 1,574.02 kB (31.8%), then made heavy libraries lazy-only so the reduction would not decay. Moved data fetching to a query cache and replaced an unused server-rendering-focused router. Bundle analysis and tradeoffs.

A smaller, stricter codebase. Added CI checks that removed unused files, dependencies and exports across 275 files; made unused variables and missing hook dependencies errors. Removed about 6,300 lines of retired code and updated the component library across 219 files. Replaced Chromatic/Storybook with Playwright screenshot tests over the app’s component preview. Preview and visual-testing details.

Product work.

• Wrote two ANTLR grammars and their editor for monitor-notification templates and boolean monitor composition, keeping autocomplete and errors tied to the grammar.
• Moved Metrics Explorer, investigations and onboarding onto the product’s query languages, and built formulas for explorers, dashboards and monitors.
• Built Service Map, Metrics & Log Inventory and Kubernetes Metrics monitoring; contributed to the Monitors overhauls.
• Built a Grafana data-source plugin with metric search and time, theme and lookback synchronisation.

Churney / Lead Front-end Developer

Oct 2022 – Feb 2023 · Copenhagen, Denmark

Worked directly with the founders to establish a web platform and dashboard giving clients self-service access to their models and insights.

Built embeddable interactive visualisations used for marketing and outreach.

DataRobot / Senior Front-end Developer

May 2019 – Sept 2022 · Copenhagen, Denmark

Joined the Geospatial Domain early to build exploration and visualisation features for Location AI.

• Built unique, hexagon, grid, heat and kernel-density maps over location data, plus Accuracy Over Space maps to explore model residuals.
• On the Batch Predictions team, built job definitions, letting users design and schedule recurring prediction jobs across supported sources and destinations, with in-form validation and run-time error tracing.

Later built the Drill Down tab for MLOps data drift, with per-feature drift over time and reference-versus-comparison distributions.

Leapcraft / Data Visualisation & Full-stack Development

Jan 2015 – Apr 2019 · Copenhagen, Denmark

• Built bespoke D3, Leaflet and Highcharts visualisations for consulting projects with large client datasets.
• Created Flight Sense dashboards that helped travel managers explore their busiest routes, airports and airlines over time.

Later led development and architecture of AWS infrastructure for ingesting real-time data from Leapcraft sensor platforms such as AmbiNode, running calibration and machine-learning models, and delivering analysis to clients and connected building systems.

Freelance / Creative Technologist

Jan 2013 – Dec 2014 · Copenhagen, Denmark

Consulted on data visualisation and UX projects for Leapcraft, KL7 and Kirt Thomsen.

HITLabNZ / Research Assistant

Sept 2011 – Dec 2011 · Christchurch, New Zealand

Worked on augmented reality projects on the Android platform, alongside visual design for the lab’s output.

Purple Leaf Design / UX Designer & Developer

Nov 2009 – Dec 2009 · Guwahati, India

Worked on branding and identity alongside web development for the studio’s clients, with competitive research feeding both.

Zensar Technologies / Usability Engineering Intern

May 2009 – Jul 2009 · Pune, India

Interned with the Usability Engineering Group, producing wireframes, use cases and information architecture for enterprise software, and contributing to heuristic evaluations, personas and user interviews.