Building products, teams,
and systems that last.
Barnett Studios is a technology consultancy founded by Lyubomir Bozhinov. Part-time technical leadership for startups and scale-ups — from first commit to stable operation.
Get in TouchWhat We Do
Fractional CTO
Strategy, hiring, architecture, delivery. Up to ten hours a week, embedded in your leadership team.
Architecture & Due Diligence
Independent technical assessment. No vendor bias, no selling you services you don't need.
AI-Native SDLC Adoption
Not “add Copilot” — a structured SDLC transformation with governance and measurable outcomes.
Engineering Hub Setup
Build a team in a new geography. From first hire to steady state.
Selected Work
Audit trail for every microsecond
Regulated FinanceBack-office control plane for a MiFID II trading platform on Aeron Cluster. Led multiple teams, owned cloud infrastructure, introduced AI-native development.
Stabilising a team that had lost trust
Workplace SafetyCTO of a safety-tech startup after two predecessors in five years. Reset the roadmap, restructured to remote-first, rebuilt the platform, reshaped company strategy.
First commit to thousands of users in six months
Online EntertainmentFounding engineer at a regulated real-money platform. Built the stack from scratch, then grew the engineering team from five to forty people.
Migrating without the big bang
Supply ChainLed a forty-person engagement replacing a legacy monolith via Strangler Fig. Built the client relationship, drove standards, handed over a maintainable architecture.
Making physical assets queryable
Telecom InfrastructureDigital twins from drone surveys — asset management, EMF simulation, and M&A due diligence for tower companies, all from a browser.
10+
Years in tech
Engineer to CTO
Every role
5 → 40
Teams scaled
Founder
Lyubomir Bozhinov — Fractional CTO. Open-source builder. More than a decade across regulated finance, safety-tech, online entertainment, and telecom — every role from software engineer to CTO. I work with founders who need that experience without the full-time overhead.
How We Work
Discovery
A short diagnostic engagement. We assess your engineering org, architecture, and team dynamics. You get a written report with recommendations — whether or not we continue working together.
Embedded Partnership
Up to ten hours per week, three to twelve months. Embedded in your leadership team — standups, hiring panels, architecture decisions. Not an advisor on the side. A working member of your team.
Transition
The goal is to make ourselves unnecessary. We hire or develop your permanent technical leadership and hand over context through a structured transition.
We Also Build
We don't just advise on systems — we build and operate them.
Writing
Technical Debt Is a Leadership Problem, Not an Engineering One
Ward Cunningham never said what you think he said. Technical debt is a ledger of leadership decisions — every deferred migration, every prioritised feature over refactoring, every 'we'll fix it later' that nobody scheduled. The engineers didn't create the debt. They documented it.
Event Sourcing Under MiFID II: When the Complexity Pays for Itself
Regulators fined Wall Street firms $1.8 billion for missing records. Not fraud — records. Event sourcing is complex and expensive. It's also the best architecture to answer 'prove what happened' from the data itself.
Your AI Strategy Is Already Happening Without You
While the official AI strategy sits in a slide deck, the real one is executing in every developer's terminal. Three million AI agents operate within corporations. Only half are monitored. The CTO's job isn't to create a strategy — it's to surface the one that already exists.
Speaking & Network
Upcoming: Resilient by Design — WeAreDevelopers Online 2026. Deep dive on robust architectures for high-stakes financial systems.
Part of the MISSION+ partner network — expert tech leadership and flexible development teams.
Ready to talk?
Whether you're building from zero or scaling what works, we'd like to hear about it.
Get in Touch