David Ohimai

Available to hire

I’m David Ohimai, a Flutter mobile app developer with 2+ years of experience building cross-platform Android and iOS applications.

About

I’m David Ohimai, a Flutter mobile app developer with 2+ years of experience building cross-platform Android and iOS applications. I lead delivery across production apps, focus on clean Dart code, and improve reliability by running thorough testing and code reviews, often reducing bugs significantly while keeping user experiences smooth.

I’ve also mentored interns and newer developers, supported teams through Agile workflows, and handled API integrations using REST and GraphQL. I enjoy turning designs into polished screens, migrating state management approaches (GetX to Riverpod) for long-term maintainability, and continuously learning emerging mobile practices to ship stable, scalable products.

  • Joined September 2026

Languages

  • EnglishAdvanced

Industry experience

  • Software & Internet
  • Computers & Electronics
  • Education

Projects · 1

Idey needed a marketplace app connecting clients who need services with verified service providers, individuals or companies. It had to cover job posting, applications, hiring, in-app chat, ratings, identity verification for providers, and subscription payments. I built Idey in Flutter with GetX, Dio, and REST APIs for Android and iOS. On the client side, users sign up, browse categories, search providers, post jobs, review applications, hire, chat, and rate providers after completion. On the provider side, users sign up as an individual or a company, complete Didit biometric KYC verification before the app unlocks, subscribe to a plan through Paystack, Korapay, or Interswitch, browse and apply for jobs, manage accepted jobs from a dashboard, list services in the marketplace, and chat with clients. Chat and notifications run on Socket.io with JWT auth and auto reconnect. I handled the Android build setup, including Kotlin DSL fixes, adaptive launcher icons, and native splash screens, along with fixes across job details, chat creation, and subscription display. Idey went through closed testing with 12 testers. I fixed the bugs found, including a failing resend OTP flow, and moved the app into production on Google Play. Testers gave positive feedback on the UI and functionality.

  • AI Developer
  • App Developer
  • Developer
  • +2

Work experience· 12 roles

Flutter Mobile App Developer · Ko deHauz (remote)Jan 2026 – Present · 11 mos

Led mobile development across multiple job board, WordWiz, and Saleslify apps. Implemented features and refactored code toward clean architecture, and migrated all three apps from GetX to Riverpod to improve maintainability. Integrated REST APIs across projects and GraphQL for the Saleslify app. Conducted code reviews across a 12-person team, improved PR quality, and caught defects before release. Mentored interns with assigned project goals, enforced coding standards, resolved technical issues quickly, and held weekly progress meetings to unblock the team and feed emerging Flutter trends into product planning.

Flutter Mobile App Developer · Ko deHauzJan 2026 – Present · 11 mos

Led mobile development across multiple job-related apps (Job Board, WordWiz, Saleslify), implementing features and refactoring codebases toward clean architecture. Migrated three apps from GetX to Riverpod to improve state management and long-term maintainability. Integrated REST APIs across projects and GraphQL for the Saleslify app. Led code reviews for a 12-person team, improving PR quality and catching defects before release; mentored interns by assigning projects aligned with their learning goals. Enforced coding standards via structured feedback, resolved technical issues quickly, and coordinated weekly progress meetings to clear blockers and inform product planning.

Flutter Mobile App Trainer · KodeCamp (remote)Jan 2025 – Present · 1 yr 11 mos

Built and maintained the Flutter development training curriculum for KodeCamp learners. Ran learning sessions and workshops with mentoring support to close skill gaps. Designed assessments with clear milestones, provided direct and constructive feedback, and reviewed/refined each cohort’s curriculum based on learner outcomes.

Flutter Mobile App Trainer · Ko deCampJan 2025 – Present · 1 yr 11 mos
Flutter Mobile Developer Intern · KodeCamp (remote)Jan 2024 – Jan 2024 · 1 mo
Flutter Mobile Developer Intern · HNG Internship 11 (remote)Jan 2024 – Jan 2024 · 1 mo
Flutter Mobile App Developer Intern · Ridify (remote, USA)Jan 2024 – Present · 2 yrs 11 mos
Flutter Mobile Developer Intern · Ko deHauz (remote)Jan 2024 – Jan 2025 · 1 yr 1 mo

Education

Bachelor of Engineering, Petroleum Engineering · University of Benin2012 – 2018
Software Engineering · CypherCrescent Software Academy2023
Bachelor of Engineering, Petroleum Engineering · University of Benin2012 – 2018
Software Engineering · CypherCrescent Software Academy2023 – 2026

Certifications and awards· 10

Software Engineering Certification2023 – 2026
HNG Finalist Certification2024 – 2026
HNG Certificate of Proficiency2024 – 2026
Ko deCamp 4.0 Certification2024 – 2026

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