Oscar Eduardo Sierra Zúñiga

Available to hire

About

  • 9 years' experience
  • Joined October 2025

Languages

  • Spanish; CastilianFluent
  • EnglishAdvanced

Industry experience

  • Software & Internet
  • Transportation & Logistics
  • Travel & Hospitality
  • Professional Services
  • Media & Entertainment
  • Financial Services

Work experience· 26 roles

Lead iOS Developer · Nisum ColombiaAug 2021 – Present · 5 yrs 4 mos

Led collaboration with a Chilean client for external framework integration; developed phone-number transfer functionality; managed integration processes using Swift and Swift Package Manager; coordinated requirements gathering and progress updates with stakeholders; provided technical leadership and supervised final deployment to end users.

Lead iOS Developer · Nisum ColombiaAug 2021 – Present · 5 yrs 4 mos

Close collaboration with Chilean client for external framework integration; development of phone number transfer functionality; complete integration process management using Swift and Swift Package Manager; stakeholder coordination for requirements gathering and progress updates; technical leadership in implementing innovative solutions; supervision of process through final deployment to end users.

Lead iOS Developer · Nisum ColombiaAug 2021 – Present · 5 yrs 4 mos

Remote collaboration with a Chilean client for external framework integration; developed phone number transfer functionality; managed end-to-end integration using Swift and Swift Package Manager; coordinated requirements and progress updates with stakeholders; provided technical leadership and supervised final deployment to end users.

Lead iOS Developer · Nisum ColombiaAug 2021 – Present · 5 yrs 4 mos
Lead iOS Developer · Nisum ColombiaAug 2021 – Present · 5 yrs 4 mos
Senior iOS Developer · Mercado LibreJul 2021 – Oct 2025 · 4 yrs 4 mos
Senior iOS Developer · Mercado LibreJul 2021 – Oct 2025 · 4 yrs 4 mos
Senior iOS Developer · Mercado LibreJul 2021 – Oct 2025 · 4 yrs 4 mos

Education· 10

Bachelor's Degree · Fundación Universitaria Compensar2030 – 2025
Technologist in Systems Management and Software Development · Fundación Universitaria UniColombo2030 – 2025
Technical Professional in Hotel and Tourism Management · [Institución en Santaigo de Tolú, Sucre, Colombia]2030 – 2025
Bachelor's Degree · Fundación Universitaria Compensar2030 – 2025

Certifications and awards· 5

English Language Proficiency - B22030 – 2025
Technical Professional in Hotel and Tourism Management2030 – 2025
Technical Education in Hotel and Tourism Management2030 – 2025
English Language Proficiency - B22030 – 2025

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