AI Product @ LSEG

Max Grigoryev

Endurance athlete. Builder. Long-distance thinker.

I simplify complex financial systems, build tools for developers and AI models, and spend a lot of time training for long races.

REC00:00moving time

KM 5 · THE DAY JOB

Work @ LSEG

Leading AI product at LSEG — shaping how financial markets are understood by humans and LLMs.

AI for Financial Markets

Building the semantics, ontology, and tooling that let LLMs interpret pricing, analytics, curves, events, and research at scale.

Developer Platforms

APIs, SDKs, runtimes, abstractions — the infrastructure that makes financial data feel clean, fast, and consistent.

Simple Philosophy

Complexity deserves clarity. Products should feel inevitable once they exist.

KM 10 · THE COACH

Metrica.fit

AI endurance coaching for triathletes and runners — a full season of training that re-plans itself every week.

This week, re-planned live
Mon
Rest
Tue
Run 50′
Wed
Threshold
Thu
Swim 2k
Fri
Easy 40′
Sat
Long ride
Sun
Long run

The Problem

Endurance plans come in two shapes: a static PDF that dies the first week life interferes, or a coach most athletes can't justify. Everyone else guesses.

What It Does

Builds a season around your actual races, then re-optimizes every week against what you completed and how you recovered. Data arrives on its own from Apple Health, Strava, Garmin, and WHOOP.

Free, Where It Counts

ML bike-fit analysis from a phone video, IRONMAN and 70.3 race guides, and a World Championship slot tracker stay free — the parts of the sport nobody should have to pay to understand.

Keep athletes focused on what matters, and give something back to the sport that changed me.

KM 15 · THE JOURNAL

Onda

An endurance journal for iOS — where a ride, run, or swim goes after the watch stops. Free, chronological, human.

86.4 km · 3:12 · ride

The Problem

The places athletes park their training have drifted into engagement mechanics — algorithmic feeds, streak nudges, a paywall prompt one mis-tap away. The people who train hardest stay for the social graph, not the product.

What It Does

Nothing to press start on. Garmin, Suunto, and Wahoo sync on their own, Apple Health brings in the rest, and Zwift emails land at a personal inbox address. Then the map becomes the hero: splits, power curves, best efforts, training load, and share cards worth posting.

Free, and Human

No subscription, no ads, no badges or streaks. The feed is chronological and every notification comes from a real person. Clubs get their own page, feed, and leaderboards.

Your training should look as good as it felt — and the record of it belongs to you.

KM 21.1 · THE MAP

Beetroute

A free route planner for athletes — no account, no subscription, just plan and ride. The same planner ships natively inside the Onda iOS app.

Real elevation, workout-aware

The Problem

Every good route planner asks for a subscription before it will draw a line — and none of them know what session you're actually meant to be doing today.

What It Does

Self-hosted routing over OpenStreetMap with road, gravel, and run costing. Loops generated from wherever you're standing, real elevation profiles, and GPX or FIT export straight to your head unit.

Workout-Aware

Give it the session — say 4×8 minutes at threshold — and it looks for terrain that fits the intervals, instead of handing you a climb in the middle of every rep.

Routing infrastructure is cheap to run and expensive to buy. That gap is the whole product — on the web, and in your pocket.

KM 30 · OPEN SOURCE

chiptime

Recovery-grade FIT file processing — parse anything, lose nothing silently, explain everything.

A torn ride, recovered
record 4218   power 243W hr 156     cad 91     
record 4219   ····· ···· ·· ···     ··· ··     torn
record 4220   power 251W hr 157     cad 92     
record 4221   ····· ···· hr 158     ··· ··     torn
record 4222   power 248W hr 158     cad 91     

The Problem

Watches die mid-ride, batteries quit, firmware writes nonsense. Every open-source FIT parser stops at the first bad byte, and the tools that can actually repair a file are closed GUIs you can't automate.

What It Does

Resynchronizes mid-file, salvages truncated recordings, rebuilds missing session summaries from the raw records — then writes a valid .fit back out that platforms will accept.

Nothing Silent

Every drop, repair, and reinterpretation lands in a machine-readable trail. Sentinels become null before any statistic touches them, so a dead sensor never quietly reads as zero.

MIT licensed, zero runtime dependencies, Python 3.11+. The edge cases are the product.

KM 35 · THE ENGINE

Endurance & Triathlon

Everything above runs on this. Training is where I reset, rethink, and rebuild — the process is hard, and that's the point. The discipline it builds carries into everything else.

0:00
Marathon PB
0
Marathons
Ironman 70.3
0 km
Full IM · Loire Valley

"Only the disciplined ones are free. If you are undisciplined, you are a slave to your moods"

Eliud Kipchoge, world's fastest marathoner
NEXT UPIronman 70.3 Cascais → and whatever the next start line turns out to be

How I Train

Discipline. Passion. Motivation. In that order — because motivation fades, passion is the why, and discipline is the must.

Not a Pro… Technically

I'm not a professional athlete — I just play the part with enthusiasm. My quads are still questioning the casting.

Find the Data

A quiet record of the miles, the early mornings, and the long sessions that shape how I work — patient, structured, data-driven.

I like long distances — in products, in training, and in life.

KM 42.2 · FINISH LINE

Contact