About Lumosys
A studio built by engineers who care about craft.
We're a small, senior team of designers and engineers who partner closely with our clients — no account managers, no hand-offs, no surprises.
Lumosys Web started in 2017 with a simple frustration: too many agencies treated design and engineering as separate disciplines handed off in sequence. We build both together, from the first week of discovery through the day a product ships — and beyond.
Today we work with fintech, healthcare, and consumer teams who need a partner that can move at startup speed without sacrificing the rigor of enterprise engineering.
Products shipped
Years in business
Client retention
Avg. Lighthouse score
Our values
The principles behind every engagement.
Craft over shortcuts
We'd rather ship a smaller feature set done well than a large one done carelessly.
Engineering rigor
Every product we ship is tested, typed, monitored, and built to be maintained by someone else.
Radical transparency
Clients see the same roadmap, budget, and risks we do — no surprises at the end of a sprint.
Long-term thinking
We design systems for the product's next three years, not just its launch day.
Leadership
The people behind the work.
Elena Marsh
Founder & CEO
Started Lumosys after a decade leading engineering teams at two Series C startups.
Theo Anand
Head of Engineering
Leads technical architecture across every Lumosys engagement, from APIs to infrastructure.
Sofia Reyes
Head of Design
Sets the design language and creative direction for the studio's product and brand work.
Marcus Lee
Principal Engineer
Specializes in performance engineering and complex frontend systems.
Ines Dubois
Senior Product Designer
Focuses on research-driven UX for fintech and healthcare products.
Kwame Osei
Delivery Lead
Keeps every engagement scoped, on schedule, and transparent for clients.
Have a product that needs to ship? Let's talk.
Tell us about your project and timeline. We reply within one business day with next steps.