I decide what gets built, then write it so someone else can run it.

Since 2022 I have run NRTR Health, a health product that stores a person’s record on their own machine and uses that record for training, nutrition, and practitioner review. Since December 2025 I have also run Sigil42, which takes a company’s workflow, does the work with them, and turns the result into a process the team can repeat. Before that I supported study startup for about 1,000 research teams at the University of Colorado Anschutz Medical Campus.

Portrait of Xander Griego
2 daysfor two people to move 100+ data stores and about 30 workflows onto a local database, because the old system was already written down
~90%less rewrite work once coding tools had to read the project records for the files they were about to change
2–10×revenue growth at some of the businesses I advised, from the offer, the positioning, and the way the operation ran
8×rise in active users of the university’s electronic research systems, to about 150, across a campus of about 1,000 study teams

The work

Company, product, software, and the documents.

NRTR Health, Sigil42, the research office at CU Anschutz, and the writing that came out of running them. The companies exist because I needed a clearer picture of a hard problem, then kept building once that picture was useful to other people.

Executive leadership

For several years my own health stopped fitting in a chart, a supplement list, or a single diagnosis. Labs, papers, food logs, training notes, and physician records sat in different files, and more of them did not produce a clearer decision. I started NRTR because I needed one model of what had changed, what contradicted a guess, and what was still missing. I was one of the first people to run my life on it. I put about $80,000 of my own money into the work before it was a company other people could use.

That is still how I lead. I would rather a customer understand the system and keep their own record than buy a promise that one protocol fits every body. Compassion here is practical: people get more room to act when the picture is honest, including when the picture says we do not know yet. I want commerce that does that. A sale should leave the buyer more able to run the work, not more dependent on the person who sold it.

At NRTR I direct product, contractors, partnerships, and pricing, and I prepare the materials we use with advisors and investors. The company reports more than 2,000 users and more than 100 practitioners. The product connects history, observations, training, nutrition, and practitioner review, and the record stays on the operator’s machine.

At Sigil42 I run a core group of about six people plus contractors. We sell workflow and cost work, do the first installs ourselves, and write the install down so it can be staffed. I have written the statements of work and sat in the sales conversations, including the objections. One of those conversations became a formal partnership. The same rule applies: the customer should be able to keep the process after we leave.

From 2021 I have advised about 20 to 50 owners of small businesses and coaching practices on offer, positioning, and operations. Some of those businesses grew about two to ten times. Not every engagement did. I helped run a Nashville event of more than 400 people, and audience channels I ran passed 10,000 followers together. Growth counted when the operation could still be explained and repeated, not only when the top line moved.

My Experience

NRTR Health / Neuramod

Nov 2022 — present · Founder and chief executive

Founder and chief executive. I hold the product strategy, the technical direction, the documentation program, the research pipelines, and the commercial plan. The product covers health history, lab-style observations, training, nutrition, and practitioner review.

Product strategy and technical direction

  • Set the architecture: the health record lives on the operator’s machine, and about 20 outside services are reached through one internal boundary.
  • Kept model output as a suggestion. The application writes the decision and names the inputs it used.
  • Moved 100+ data stores and about 30 workflows onto that local database. Two people, about two days, working from the documents.
  • Directed more than 15 research pipelines over sets of 100,000+ papers, and wrote NRTR: The System, about 300 pages.

Documentation, education, and commercialization

  • Built the documentation program: 500+ documents, and about 1,900 records mapped across a 500,000-line codebase. Rewrite work on generated code fell by about 90 percent.
  • Wrote and taught a 20-module practitioner course. 30+ practitioners. About 89 percent passed the first sitting. The rest finished after further teaching.
  • Ran contractor management, partnerships, pricing, advisor materials, and fundraising preparation. Reported reach is 2,000+ users and 100+ practitioners.
  • nrtr.health · xandernano/nrtr-health

Sigil42

Dec 2025 — present · Co-founder and chief executive

Co-founder and chief executive, with a core team of about six plus contractors. I own technical direction, security, sales, customer retention, and the operating numbers for each install.

Technical direction and delivery

  • Set architecture, security, data pipelines, and the front and back of a system of about 200,000 lines. A working version was in place in about three months.
  • Wrote about 30 specifications and handoff documents so contractors could build an assigned part without receiving the rest of the design.
  • The founding team did the first customer installs, then turned each working install into a procedure that could be staffed.

Revenue, retention, and partnerships

  • Ran sales, statements of work, objection handling, and go-to-market. One of those conversations became a formal partnership.
  • Set the cost and performance measures used to judge whether an install was worth keeping, and used them in retention.
  • Prepared pre-seed fundraising materials. On the consumer chat product I set the offer and the message. Other founders own that application’s code.

University of Colorado Anschutz Medical Campus

Jul 2022 — Jan 2024 · Research services

Research services in Clinical Research Administration. I owned study-startup coordination, the electronic research systems, the procedures staff used, and the regulatory files that had to be right before approval.

Research operations and regulated systems

  • Supported about 1,000 study teams across research, regulatory, clinical, and administrative groups.
  • Implemented and supported the regulatory binder system, the data-capture system, and OnCore, under health-information privacy rules.
  • Raised active use of those systems about eightfold, to roughly 150 people, including major oncology teams.

Procedures and regulatory review

  • Wrote 50+ procedures and training documents so staff could finish study and system workflows without a ticket.
  • Prepared or quality-reviewed 150+ regulatory files: consent forms, review-board materials, OnCore records, and conflict-of-interest filings.
  • Trained new users, cleared access, and redesigned the steps that kept generating the same support problems.

Independent advising

2021 — present · Advisor

I advise owners on offer, positioning, partnerships, and operations, and I stay through the work that changes revenue.

Growth and commercial design

  • About 20 to 50 entrepreneurs and coaches. Some of those businesses grew revenue about two to ten times.
  • Built the offer, the audience, and the partnerships those businesses sold through.

Events and audience

  • Helped lead a Nashville event of more than 400 people.
  • Ran audience channels that together passed 10,000 followers.

Education

Western Governors University

Master of Business Administration

2021

Bachelor of Business Administration and Management

2020

Documents

Setup, contracts, platform, and operations.

The guides used to install NRTR, record an observation, describe the platform, keep project notes current, recover a broken local environment, file a knowledge record, choose the next training session, and bring a sensor reading onto the bench.

Contact

Open to leadership and AI roles.

Executive, head of product strategy, head of AI, and senior technical documentation. The companies, the revenue work, the systems, and the documents on this page are the record.