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Senior engineering, without the full-time hire.

Need someone to build your product, lead your developers, maintain a critical system, fix what is broken, review your architecture?

MIT-trained engineer and health-tech CTO. I build the whole thing myself: mobile apps, web platforms, and the cloud they run on. No agency, no offshore team. The person you talk to is the person who does the work, whether that's one project or a few hours every week.

15+ years
building software
CTO
of a health-tech platform
MIT
research and development
HIPAA
compliant systems in production

Your first 30 minutes is complimentary.

Who I work with

From one person with an idea to a large company with software already in production. Same engineer, same standard, sized to where you are.

  1. Founders with an idea

    No technical background needed. I take you from a rough idea to a launched product, start to finish, and explain every decision in plain English.

  2. Startups and growing teams

    You have a product and a few developers. I lead them, fill the gaps, and keep the architecture from boxing you in as you grow.

  3. Established companies

    Software already runs the business. I support, maintain, and extend it, and take on the work your team has no time for.

Ways to work together

Project development

I design, build, and ship the software myself: web and mobile apps, AI features, internal tools, data pipelines. Scope is written down before anything is signed, and you own all of the code.

How development work runs

Ongoing consulting, a few hours a week

Senior judgement on call, without the salary. Manage or mentor your developers, review code and architecture, keep a system you depend on patched and running, or be the person your team brings the hard questions to.

How consulting works

Fractional CTO

The technical leadership seat, part time. Roadmap, architecture, hiring, vendors, and technical due diligence, for a company that needs a CTO but not a full-time one yet.

What a fractional CTO does

What I work on

One engineer, a wide range. Most problems cross a few of these at once, which is exactly where a generalist with depth earns their keep.

Web and mobile apps
Flutter, TypeScript, and the backends behind them.
AI and machine learning
LLM features, model pipelines, and medical imaging analysis.
Cloud and infrastructure
Google Cloud, Firebase, CI/CD, and a sensible monthly bill.
Health and regulated software
Access control, audit trails, and encrypted health data.
Research software
R&D at MIT, and software for labs and grant-funded teams.
Rescues and audits
Inherited codebases, stalled projects, and a fixed-price health check.

Why not an agency

You talk to the person doing the work. Agencies sell you a team you never meet, often offshore. Here the engineer on the first call writes the code. No bench, no subcontractors, no hand-offs.

You pay for expertise, not overhead. No account managers and no junior developers learning on your budget. If the honest answer is to build less, or nothing at all, I'll say so.

You own everything. Code, repositories, cloud accounts, and IP are yours from day one, so working with me is never a dependency.

Who you'd work with

Eric P. Hassey

Eric P. Hassey. Engineer since 2011. R&D at MIT, then CTO of Preventa Wellness, a preventive-health platform running AI analysis over retinal imaging, where I've led engineering since 2019. I also co-developed PriceHarvest, and I build my own products at IN2Labs Studio. Based in Boston, working with clients everywhere.

Questions

Do I need a technical co-founder?

Usually not. That is largely why this practice exists: I act as your technical leadership, from architecture decisions through production deployment, and you keep full ownership of everything built. If your product genuinely needs a technical co-founder, I will tell you that too.

What if my project isn't a startup?

Research groups, labs, and established companies are often a better fit than startups. Analysis pipelines, internal tools, technical audits, grant-funded software, and product rebuilds are all normal work here — the common thread is needing senior engineering judgment without a full-time hire. Institutional paperwork (PO, W-9, COI, BAA) is routine; say so on the first call and it moves in parallel.

Who do you work with?

Anyone from a single non-technical founder with an idea to a large company with software already in production. For founders, I take the product from idea to launch, start to finish. For growing startups, I lead the developers and own the architecture. For established companies, I support, maintain, and extend the software the business already runs on.

What if I only have a rough idea?

Perfect — a napkin sketch or a five-minute voice memo is a fine starting point. The discovery process exists to turn a rough idea into a scoped, buildable product, and it's the part where cutting scope saves you the most money.

How fast can you actually ship?

Scoped features in days; a focused MVP in 8 to 12 weeks. Timeline depends entirely on scope, and you see working software every week rather than a status percentage — which is how scope problems surface in days instead of at the end.

Who will actually be working on my project?

Eric Hassey — me. IN2Labs is deliberately a one-person senior practice in Boston, so the person you meet on the first call is the person who designs your architecture and writes your code. There is no bench, no hand-off, and nobody junior learning on your budget. Where a project genuinely needs a specialist I do not cover, I say so and help you find one rather than quietly staffing it.

Can you build HIPAA-compliant software?

Yes — in production, and on an ongoing basis. Eric's HIPAA work goes back to Preventa Medical Corporation, the medical-device company behind the NSF SBIR retinal imager, and the current platform — Preventa Wellness, where he is CTO — is engineered to the highest standards: encrypted health data, queryable audit logging, role-based access over health records, and BAA-covered infrastructure. Full disclosure, since it is the example I lean on most: I am a co-founder of Preventa and have a financial interest in it beyond the engagement fee, so it is not an arm's-length client reference. If your product touches health data, I already know what compliance actually requires.

How do you price engagements?

Concretely: fractional CTO retainers run $5,000–$12,000/month depending on days per week, with regulated work (HIPAA, medical AI) at the upper end. A fixed-price Technology Health Check is $2,500 for a two-week review with written findings, credited against a retainer if you go ahead — details at /technology-health-check. Once we are both serious, I write a proper SOW before anything is signed — scope, deliverables, and exclusions in writing, so there are no surprises either way. Full MVP builds typically run $25,000–$80,000. You work directly with one senior engineer — no account managers, no bench overhead, no junior devs on your dime — so you are paying for engineering, not for the org chart around it.

You're one person — what happens if you're unavailable, or I outgrow you?

Fair question, and worth asking directly. Two things make it manageable. First, you own everything from day one — the code, the repositories, the cloud accounts, the domain — and every engagement ends with documentation and a walkthrough, so nothing about your product depends on IN2Labs continuing to exist. Second, a one-person practice has hard capacity limits, which means I take a small number of engagements and say no when the calendar is full rather than quietly stretching. If your product outgrows what one senior engineer can carry, the right move is your own in-house hire — and helping you scope, interview, and onboard that person is part of the fractional CTO work, not a threat to it.

Can you work with my existing team?

Often the best arrangement. I embed alongside your developers for code review, architecture, and the features nobody senior has time for — and a large part of the fractional CTO role is raising the bar of the team you already have.

Do you accept equity?

Yes — cash, equity, or a combination, though equity works as an addition to a cash floor rather than as a discount. If I believe in what you are building, I am open to sharing the upside.

What happens after launch?

I do not disappear at launch. Maintenance retainers cover monitoring, bug fixes, and feature work, and ongoing development is available if you want it. You are never locked in: you own the code and the accounts from day one, so continuing is a choice rather than a dependency.

Get in touch

The fastest way to start is a call. Your first 30 minutes is complimentary: tell me what you're working on and I'll tell you honestly what it takes.

Book a 30-minute call

Rather write first? Send a message and I'll reply within one business day.

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