Daniel Etuk

Senior Software Engineer leading cross-functional initiatives at a fast-growing payment aggregator startup, architecting resilient, real-time payment systems processing millions of Euros monthly.

• Led cross-functional engineering initiatives, architecting resilient, real-time payment systems processing millions of Euros monthly for high-volume transactions in entertainment and gaming.
• Owned and delivered the company's first successful PCI DSS Level 1 certification by leading system audits and collaborating with assessors, enabling expansion into high-risk verticals ahead of schedule.
• Acted as technical lead for merchant integrations, onboarding 25+ clients across Africa and Europe, improving go-live speed by 3x through automation and improved documentation.
• Delivered end-to-end features across mobile, web, and backend systems using TypeScript, Dart/Flutter, Golang, and C#/Blazor WebAssembly, accelerating time-to-market for mission critical payment products.
• Authored and maintained robust technical documentation, including architectural diagrams and onboarding guides, cutting onboarding time for new engineers by 50% and improving internal velocity.

Software Engineer contributing to core payment processing features, including transaction lifecycle handling, webhooks, and merchant-facing dashboards across multiple platforms.

• Developed lightweight payment experiences using Flutter/Dart for Google Play Instant and Apple App Clips, cutting user onboarding friction and increasing conversion by 63% in mobile payment funnels.
• Built a Golang-based WhatsApp API client for payment event notifications and customer messaging, reducing notification latency by 35% and improving merchant-customer communication flows.
• Played a key role in building internal tools and dashboards for merchants, contributing to a 3x reduction in support tickets by enabling transaction tracking, monitoring, and dispute resolution.
• Authored detailed integration documentation for third-party developers and partners, significantly improving clarity around payment flows, authentication, and settlement mechanics.

Lead Software Engineer serving as a Senior Mobile Engineer Consultant for a YCombinator-backed fintech infrastructure company, architecting and leading development for their flagship mobile app.

• Served as Senior Mobile Engineer Consultant for Miden, a YCombinator-backed fintech infrastructure company, architecting and leading development for TEGS, their flagship mobile app, using Dart/Flutter.
• Led mobile and web engineering efforts for multiple high-impact client projects at a fast-paced software consultancy, delivering tailored solutions across fintech, real estate, and e-commerce verticals.
• Owned end-to-end client delivery as technical lead, conducting technical discovery sessions, translating requirements into actionable technical plans, and maintaining direct communication with stakeholders throughout development cycles.
• Built microservices in Rust for a real estate consulting firm (kamelleconsult.com), boosting backend throughput by 10x and reducing latency under load for real-time construction data and workforce management.
• Enforced internal best practices including CI/CD pipelines, code quality standards, and performance monitoring tools to improve delivery velocity and production reliability.

Mobile Engineer (Contractor) streamlining CI/CD pipelines and developing a mobile-first savings platform for a leading financial institution.

• Engineered CI/CD pipelines using Codemagic and GitHub Actions, streamlining deployment for multiple mobile release variants and improving deployment speed by over 5x, accelerating time to market.
• Led the development of KlikSave, a mobile-first savings platform for 4Stone Capital, ensuring compliance, security and an intuitive savings experience tailored to their customer base.
• Authored and maintained comprehensive documentation for software systems, including requirements, design documentation, and process guidelines, ensuring consistency and clarity for both internal teams and external stakeholders.

Frontend Software Engineer leading data modeling and testing for a React-based fintech application and resolving technical debt.

• Led data modeling and testing for a React-based fintech application, ensuring accurate data flow and robust performance through comprehensive testing and validation processes.
• Resolved technical debt and improved system efficiency, reducing cycle time (time to release) by 30+% through code refactoring and optimization of development workflows.

Intern developing and engineering unit components for an embedded product while gaining hands-on experience with C++, Arduino, and microelectronics.

• Developed and engineered unit components for an embedded product, gaining hands-on experience with C++, Arduino, and microelectronics during an internship program.
• Developed the presentation layer of an embedded product using Angular, enabling seamless interaction between users and the embedded device, improving the overall efficiency and usability of the product.