Sergei Müller
Open to new connections

Twenty+ years making complex data feel effortless.

Sergei Müller

Senior full-stack engineer · TypeScript / JavaScript · Architecture & performance · UK

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About

I'm a senior full-stack engineer with 20+ years building data-rich web apps and leading front-end & platform initiatives. I love clean architecture, pragmatic testing, and wringing performance out of complex UIs.

My toolbox: TypeScript, React/Vue, Node/Express, GraphQL/REST, Jest/Cypress, and Mapbox/Leaflet.

Outside of work I tinker with ethical-tech ideas, play guitar, and chase sunny places to work remotely.

TypeScript React & Vue Node / Express GraphQL / REST TDD / BDD System Design
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Work

Kpler — Senior Front-End Engineer

2023 — present

Shipping & maritime data platform

Lead front-end work on voyage & freight calculators, emissions costs, dynamic fuel-consumption tables, and multi-leg route planning. Improved maintainability and performance across large codebases.

Previous roles

2000s — 2020s

Java, PHP & full-stack

Delivered production systems across web and data domains, mentored engineers, and shipped features end-to-end — from API design to pixel-perfect UI.

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Contact

Not open to new roles — but always up for a good conversation.