Build Effective, Reliable Software Without Costly Rework
Hi, I'm Darren Marshall, founder of Marshall Technologies. I partner directly with founders and small teams to design, build, and ship dependable software.
I offer hands-on development and fractional product leadership with a focus on health technology and patient-facing systems, where mistakes are expensive and trust matters.
Software Development
Mobile and web applications built for real-world use
Agentic and AI-enabled systems where appropriate
Health technology systems designed for reliability and trust
Fractional Product Management
Clear product direction from idea to launch
Technical roadmap navigation and decision support
Execution support that keeps teams focused on outcomes
Who I Work With
- Health tech startups building their first product
- Founders who need senior technical execution
- Teams that want clear direction, not guesswork
Why Work With Me
Clients work with me to reduce risk, move faster with confidence, and avoid costly technical and product mistakes.
- 15+ years of professional software experience
- Former agency founder who built and sold a consultancy
- Proven delivery in regulated and high-stakes environments
Selected Experience
- Multiplied ARR of an iOS app 12x through subscription and pricing experiments
- Built a multi-million dollar software platform from zero to product-market fit
- Architected a multi-tenant payments system routing $19M annually
- Partnered with clinicians to deliver a HIPAA-compliant therapy app
How Engagements Work
- Free consultation to clarify goals, scope, and constraints
- Engagements are retainer-based and billed hourly
- Weekly or biweekly check-ins to review progress and adjust
I serve clients in the United States and internationally.
Get in Touch
If you have a project that needs experienced execution and clear product thinking, reach out to start a conversation with me.
Free initial consultation available