Build the performance OS.
We turn raw wearable signals into one number that explains why your energy is what it is. It's hard, unglamorous, deeply technical work — and it changes how people spend their days. LockIn90 is a one-person company today; these are the first roles I'm hiring for, and you'd be employee #1.
Time-poor people deserve to treat health as wealth.
Serious people — powerlifters, founders, surgeons, parents — don't have hours to spend decoding their own physiology. So most just guess, push through, and burn out a little every afternoon.
LockIn90 reads your wearable, models the real drivers, and hands you one number and the why behind it before noon. We're early, profitable on every paid plan, and building the system we wish existed.
Work that actually ships
Small team, short path from idea to production. Your code is in athletes' hands within the week — no committees, no theater.
Hard, real problems
Personalized physiological modeling, effect generators, p-values that gate features. Engineering with scientific rigor, not vibes.
Founder-direct, zero layers
No managers, no committees — you work straight with the founder. As employee #1 you'll shape culture, not inherit it. High trust, high autonomy, real ownership.
A product you'd use
We're our own power users. The roadmap is shaped by people who track HRV, RPE and caffeine cutoffs because they actually care.
We invest in your energy, too.
The product is about protecting your best hours. We'd be hypocrites not to do the same for the people building it.
Remote-first, async
Work from wherever you do your best thinking. We default to writing, not meetings, and respect every timezone equally.
Meaningful equity
Everyone owns a real piece of what we're building, on a standard 4-year vest. When LockIn90 wins, you win with it.
Health & wellness stipend
$2,400/yr for health insurance top-ups, therapy, a gym, coaching — whatever keeps your body and mind in good shape.
Hardware & wearables budget
Top-spec laptop, your desk setup, and a wearable on us — Oura, WHOOP, Garmin or Apple Watch. You should live in the product.
Learning budget
$1,500/yr for books, courses and conferences, plus paid time to use it. We hire curious people and keep them curious.
Protected focus time
No-meeting Wednesdays, generous PTO with a 3-week floor we actually enforce, and a culture that treats deep work as sacred.
The values we actually hire and fire on.
Not poster slogans — these are the things we screen for in interviews and reinforce in reviews.
01 · Show your work
The product refuses to be a black box, and so do we. Decisions are written down, reasoning is shared, and "trust me" is never an argument.
02 · Rigor over vibes
We gate features behind p-values and ship calibrated, not just plausible. If we can't measure it, we're honest that we're guessing.
03 · Respect the user's time
Three taps, one number, one reason. Every feature has to earn its complexity. We delete more than we add.
04 · Privacy is non-negotiable
This is health data. We encrypt it, k-anonymize cohorts, never sell it, and design like our own families are on the platform.
05 · Default to ownership
See a problem, own the fix — end to end. Titles describe focus, not fences. Nobody here says "not my job."
06 · Strong opinions, loosely held
Argue hard for the best idea, then commit fully even if it wasn't yours. Ego is the most expensive thing on a small team.
Right now, the team is one person.
LockIn90 is a one-person company today — founder Oleksandr Myronenko. These are the first roles I'm hiring for, so whoever joins is employee #1.
I designed, built and run all of LockIn90 myself — backend, web, mobile, the energy models and the production systems. It's deliberately a company of one, kept small enough to stay honest.
Joining as employee #1 isn't a cog in a machine — it's helping pick which machine we build. You'll work founder-direct, own a whole surface end to end, and set the bar for everyone who comes after you.
“I'm hiring my first teammates, not my hundredth. If you want outsized ownership and a short path from idea to athletes' hands, this is it.”
Remote-first, built to last the distance.
Remote doesn't mean lonely, and async doesn't mean slow. Here's the shape of a normal week.
Write first. Big decisions start as a doc. Anyone can read the reasoning and push back, on their own clock.
Two syncs a week. One demo, one planning — founder-direct. The rest of the week is yours to actually build, deep and uninterrupted.
Ship & show. Friday demos celebrate what shipped — a model improvement, a screen, a fixed bug. Progress over polish theater.
Meet IRL twice a year. As the team grows, we'll meet up to plan, lift, eat well and remember there are humans behind the pull requests.
“'Show your work' isn't a slogan here — every model change ships with the stats to back it. As employee #1 you won't inherit that culture; you'll help write it.”
Oleksandr Myronenko · Founder & Sole Engineer
Come build the why.
Every role is fully remote. We sponsor visas where we can and hire for trajectory, not pedigree.
Senior Product Engineer
Engineering · Remote (Global) · Full-time. Own end-to-end features across our Next.js apps and Fastify backend — from the energy score pipeline to the surfaces athletes see every morning.
Sports Data Scientist
Science · Austin, TX or Remote · Full-time. Improve the models behind the energy score — calibration, signal fusion, and adaptation — and validate them against real athlete outcomes.
Product Designer
Design · Remote (Global) · Full-time. Design the moments that matter — the morning score, the daily plan, the onboarding that earns trust — with a sharp, performance-grade visual language.
Lifecycle Marketing Lead
Marketing · Remote (US) · Full-time. Build the lifecycle that turns a new sign-up into a daily habit — onboarding, education, and re-engagement grounded in real behavior.
Don't see your seat — but know you'd fit?
We hire exceptional people ahead of the headcount. If you'd thrive on rigorous, explainable, health-grade software, tell us what you'd own and how you'd move the needle.
Reach out anywayNot ready to apply? Decode your energy free.
The fastest way to understand what we're building is to live in it. Connect a wearable and get your first decoded day by tomorrow.
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