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@dexkodeuser

Frontend engineer at Kalder who delivered a secure, embeddable rewards platform and payment flows for merchant integrations.

Nigeria
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At Kalder, I led frontend development for a rewards platform distributed through webviews, iframes, and native mobile bridges. I designed secure merchant integrations and built payment flows with Stripe Elements.

At Payoneer, I owned frontend architecture for payment dispute and refund workflows. I built a routing engine UI to optimize payment provider selection and improved frontend performance by 30%.

At Archibald, I led frontend engineering for Loop, a consumer insights platform, and developed scalable UI systems for data collection and reporting dashboards. Earlier, I worked on agency banking products at Nomba and built fullstack applications at Decagon.

Experience

Work history, roles, and key accomplishments

KA

Senior Software Engineer

Kalder

Jan 2025 - Jan 2026 (1 year)

Led frontend development, owning architecture and delivery of a rewards platform distributed via webviews, iframes, and native mobile bridges. Designed secure embeddable architecture with CSP enforcement, origin-validated postMessage communication, and sandboxed merchant integrations.

Payoneer logoPA

Frontend Engineer

Jan 2022 - Jan 2025 (3 years)

Owned frontend architecture within a large micro-frontend ecosystem, powering payment dispute and refund workflows while supporting fraud prevention initiatives. Built a routing engine UI improving transaction success and improved frontend performance by 30% through code-splitting and bundle reduction.

AR

Lead Frontend Engineer

Archibald

Jan 2021 - Jan 2024 (3 years)

Led frontend engineering for a consumer insights SaaS platform focused on survey, feedback, and analytics workflows. Owned architecture and implementation of scalable UI systems for structured data collection and reporting dashboards.

Nomba logoNO

Frontend Engineer

Jan 2020 - Jan 2021 (1 year)

Implemented and maintained UI features for high-volume agency banking products used for cash-in, cash-out, and bill payments, supporting millions of daily transactions. Built responsive, production-grade interfaces for agent dashboards and customer-facing flows.

Decagon logoDE

Fullstack Engineer

Decagon

Jan 2019 - Jan 2020 (1 year)

Built and maintained fullstack applications using React, Node.js, TypeScript, and modern frameworks. Designed APIs and database schemas to support business-critical features and mentored junior engineers.

Education

Degrees, certifications, and relevant coursework

University of Ilorin logoUI

University of Ilorin

Bachelor of Science, Statistics

2014 - 2018

Bachelor of Science in Statistics from the University of Ilorin from 2014 to 2018.

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