BENJAMIN
CEGLOWSKI

HARMONIC SECURITY

• —Principal UI Engineer at a fast-paced AI startup, responsible for delivering the core product interface end-to-end.
• —Architect and ship high-quality React applications at speed using React and Vite, balancing rapid iteration with production-grade robustness and performance.
• —Drove significant frontend performance improvements, reducing load times and runtime overhead while maintaining a refined, responsive user experience.
• —Instrumental in streamlining developer experience (DX), introducing tooling, build optimisations, and workflow improvements that accelerated development velocity across the team.
• —Reduced product friction through thoughtful UI architecture, interaction design, and systematic refactoring, enabling faster feature delivery with fewer regressions.
• —Established frontend standards and patterns that improved maintainability, consistency, and long-term scalability in a high-growth environment.

DELIBERATE SOFTWARE LTD

• —Designed and delivered end-to-end web solutions for clients across e-commerce and fintech.
• —Principal-level technical leadership, mentoring, architecture, and strategic guidance.
• —Perfect Moment — Full production and upkeep of e-commerce platform: TypeScript, Next.js, GraphQL, Clojure, Contentful, Commercetools.
• —Moo — Full-stack services for checkout and back-end PIM integration: TypeScript, Next.js, AWS, Salsify, Commercetools.
• —Ebury — Trading application: TypeScript, Next.js, Python, PostgreSQL, AWS; hands-on mentorship and technical direction.

CRAFTING THE INTERNET LTD

• —Software engineering and technical leadership across transport, education, energy, and compliance. End-to-end architecture, mentorship, and best practices.
• —Riskbase — Lead engineer for mobile risk-assessment app (TypeScript, React Native).
• —Shell Agile Hub — Logistics tracking platform (TypeScript, React, GraphQL, Node.js, Azure).
• —EF Education First — Scheduling platform for language tuition (TypeScript, React, MobX, Go).
• —Trainline — International rail travel features (TypeScript, React, Redux, Node.js, C#).

ONEFINESTAY

• —Drove development of a new statically rendered React application architecture for the main platform.
• —Advised product, SEO, and CRO teams; led migration from costly SaaS tools to in-house replacements.
• —Full-stack: JavaScript, React, GraphQL, Node.js, Python, Django, AWS, Jest.

PHUSE.CA

• —Led distributed, asynchronous engineering team delivering bespoke web consultancy.
• —Oversaw project delivery and code quality across JavaScript, PHP, React, Node.js, Angular, Vue.js, MySQL.
• —Implemented company-wide engineering standards and best practices; architected full-cycle applications.

THE BIO AGENCY

• —Led front-end team developing web platform for Yell Group. Technical leadership, mentorship, training.
• —JavaScript, HTML, CSS, PHP, MongoDB, Backbone, Ember (LAMP).

SHINE MARKETING

• —Developed end-to-end retail e-commerce websites for a London-based boutique consultancy.
• —Delivered full-stack solutions using PHP, MySQL, JavaScript, HTML, CSS, and jQuery.

FREELANCE

• —Delivered web design and development services for several Durban and London-based consultancies.
• —Provided full-stack engineering across JavaScript, PHP, MySQL, Apache, and MongoDB, creating performant and maintainable digital solutions for clients.