Technology & product advisory
Work through technical priorities, product decisions, and delivery plans with an experienced engineering leader.
Technical direction · Product strategy · Focused advice
Independent technology consultant
Executive experience.
Hands-on engineering.
I’m Hassan Sultan, former CTO of Cedar and Managing Director of Equities Engineering at Citadel, with earlier technology leadership experience at Bridgewater.
I help founders and engineering teams make consequential technology decisions and build the software behind them.
Technology & product advisory · Code review & architecture · Hands-on engineering
How I can help
From the code
to the bigger picture.
I work directly with founders and engineering teams on focused, well-defined problems.
Code review & architecture
Get a clear assessment of an existing codebase or a practical plan for the next stage of a system’s development.
Codebase reviews · System design · Technical tradeoffs
Python, backend & data
Build and improve backend services, integrations, data pipelines, and the systems that keep useful data moving.
Implementation · Reliability · Maintainability
Selected background
Built systems.
Led teams.
Still hands-on.
My experience spans financial services and healthcare technology, combining data-platform expertise with engineering leadership.
I’ve worked on complex systems from the implementation details through to the decisions that shape a technology organization.
- Cedar 2018–2022
- CTO, leading healthcare payments, patient engagement, and provider integration technology through a period of substantial business growth. Cedar reached a $3.2 billion valuation in 2021 and reported 22 million patients engaged annually as of December 2022.
- Citadel 2023
- Managing Director, Equities Engineering, leading data-platform consolidation and migration of key pipelines toward GCP.
- Bridgewater Associates 2005–2014
- Technology leadership across distributed research compute, database and messaging infrastructure, and economic-data platforms.
- Navya Network 2016–2018
- Co-founder and CTO of an ML-based oncology treatment recommendation platform, bringing a founder’s perspective to technology and product decisions.
Harvard College · A.B. Computer Science
Magna cum laude, 2005
Let’s talk
Have a specific
problem in mind?
Share what you’re building, where you need help, and your timeframe. I take on a small number of focused engagements.
Connect on LinkedIn
Direct conversation. Clear scope.