Biotechnologist

Cyndi Root

Technical writer, visual designer, and iOS developer. Consulting for teams who need someone who can do all three.

Not sure what to publish next? Find out in 2 minutes →
  • Hand-built biofeedback visualizations
  • Behavioral modeling with GameplayKit
  • Production commerce and sync, StoreKit 2 and CloudKit
  • Medical research and writing, GERD to oncology to behavioral health
  • Original author, a strengths-based reframe of ADHD, published on Amazon
  • 25 long-form (6,000+ word) deep-dives into major psychological topics
  • Investor and stakeholder decks that make dense science land
  • Full visual systems, deck plus supporting graphics
  • Motion graphics and video production
🔧 now building: Web-lite Portal — a lightweight client portal engine — in progress since Sept 2026        🔧 now building: Web-lite Portal — a lightweight client portal engine — in progress since Sept 2026       

About

Cyndi Root

Yale undergrad degree. UPenn Medical School: a laboratory technician in the Biochemistry department, running animal surgery and cell signaling experiments. That lab background is the throughline: a decade of medical and pharmaceutical writing, then founding LocusEDU and building SelfTech, an iOS biofeedback app, from the ground up.

Still building. Still learning new things. If your project needs someone who can move between disciplines, let’s talk.

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“My team and I are blown away with Cyndi’s work. We have hired many large companies that all have a great reputation who have worked… none compare.”

★★★★★ 5.0 · Somme Institute

“We were very pleased with the timeliness, appearance and quality of the work product. We look forward to working with Cyndi again in the future.”

★★★★★ 5.0 · Stada Group

“Exceptional work! I will definitely work with this freelancer again.”

★★★★★ 5.0 · Charlie Health

Programmer

See SelfTech live on the App Store →

Neurochemical aura visualization, SelfTech app

Hand-built biofeedback visualizations

A single 648-line view running three layered TimelineView + Canvas particle systems: a physics-driven particle field, procedural per-chemical glyphs drawn from trig rather than icon assets, and a multi-harmonic sine wave. All three timelines explicitly suspend when off-screen or backgrounded, real GPU-budget discipline, not just a pretty effect.

Signal Brief pattern detection, SelfTech app

Behavioral modeling with GameplayKit

Core to the app’s Library feature, not decorative code: a GKStateMachine narrative-arc tracker plus a ~13-rule GKRuleSystem, gated behind a repeated pattern and 65%+ confidence before ever surfacing to the user. The system never diagnoses, the user always authors the final claim.

StoreKit test suite passing, SelfTech app

Production commerce and sync

Modern async/await StoreKit 2, not the older Combine-based API: a live Transaction.updates listener with cryptographic signature verification on every transaction, plus an automated test suite (SKTestSession) covering entitlement state, gating, and trial-lapse edge cases, real test coverage most solo iOS devs skip entirely.

Technical Writing

Clinical Leader author archive, Cyndi Root

Medical research and writing

A year of daily coverage for pharma industry professionals, spanning drug development, regulatory affairs, and clinical conditions from GERD to oncology. View the author archive →
Strength-Based ADHD Workbook cover

Strength-Based ADHD Workbook

Original research and writing, reframing ADHD around strengths rather than deficits. Self-published on Amazon, concept, content, and layout. View on Amazon →
Psychology writing sample

Long-form psychology writing

25 in-depth (6,000+ word) pieces on major psychological topics, originally published for a since-shuttered outlet.

Media Producer

Stada Group presentation

Stada Group

Pharmaceutical and software strategy deck.

Somme Institute Dermatology Report deck

Somme Institute

“The Dermatology Report,” a full slide deck and visual system.

Econophy animated video

Econophy

Animated explainer video production.

See more on Upwork →

What’s a “biotechnologist”

Individual skills don’t surprise people. The range stacked together does.

Most people who call themselves multi-disciplinary have one strong lane and two decent ones. Cyndi has three genuinely deep ones: documented years of daily professional writing, that’s one field. A shipped software product with real architectural sophistication, that’s another. And media design work that’s neither of those.

None of it reads as dabbling. The GameplayKit reuse in SelfTech isn’t “took an online course,” it’s a documented engineering decision. The writing isn’t a handful of blog posts, it’s years of daily output for a professional industry audience. Even the reviews back it up with specifics, timeliness, appearance, and quality, rather than generic praise.

So “biotechnologist” is the frame around the skill stack.

Designing what’s new while protecting what’s old — embracing modernism without letting it erase the history that made it possible.

Not sure what to publish next? There’s a plan for that.

See the Clarity Plan →