Rhandall Timtiman / Calabarzon, Philippines
I build the systems behind medicine deliveries, remote consultations, and port operations. From the Flutter app in someone’s hand to the services behind it.
LinkedIn profile ↗ (opens in a new tab)At a glance / Selected contributions
Hands-on work across mobile platforms, backend services, and technical leadership.
Mobile platform engineering
Developed a reusable MFA Flutter package, bridging Android Kotlin and iOS Swift implementations with Pigeon at Maya Bank Philippines.
Flutter · Pigeon · Kotlin · Swift
Read my experienceBackend reliability
Migrated a medicine-dispatch API from Bun and TypeScript to .NET, adding Redis-backed queues and explicit retry handling for failed operations.
.NET · Redis · API migration
Explore the dispatch case studyTechnical leadership
Led the Flutter mobile team and Driver App delivery at Shiptek. Mentored developers, reviewed code, and coordinated third-party integrations across subsequent senior roles.
Team leadership · Code review · Integrations
See my career progressionAbout
I’m Rhandall Timtiman, a senior Flutter and full-stack developer with more than six years of experience building production software across mobile, web, APIs, and real-time systems.
I lead cross-platform delivery, integrate complex third-party services, and mentor development teams. I graduated Magna Cum Laude in Information Technology from STI College Tanay with a 1.27 GPA.
Years engineering
Product domains
Selected work
Selected systems across medicine delivery, telemedicine, and port operations.
Field note 01 / Medicine delivery
API migration and system design
A medicine delivery depends on more than a responsive app. The dispatch service also needs a way to handle jobs that fail.
The existing Bun and TypeScript dispatch API needed lower latency and more resilient handling of delivery jobs.
Migrated the dispatch API to .NET and introduced Redis-backed queuing with explicit retry logic for failed operations.
The API, queue, and processing stages each have a part in handling the delivery job.
What changed
Reduced dispatch latency significantly while making job processing more resilient to transient failures.
The engineering detail
The migration paired a runtime change with explicit retry handling. Both are part of the story: how quickly work enters the system, and how failed operations are handled.
More from the field / 02–06
Mobile and integration lead
A cross-platform care experience connecting patients and medical teams through remote consultation workflows.
The platform needed to bring video consultations, prescriptions, notifications, and external services into one dependable product flow.
Built the Flutter mobile experience and integrated video calling, prescription workflows, Firebase services, and third-party APIs.
Delivered the core workflows required for remote consultations and digital prescription coordination.
Technical lead and Flutter developer
A mobile-first Equipment Interchange Receipt workflow supporting digital port operations.
Port teams needed to move EIR processes from manual handling into a coordinated digital workflow.
Spearheaded the digitalization effort with Flutter as the mobile client and integrated it with the surrounding port operations ecosystem.
Established a production mobile workflow for digital EIR processing in port operations.
Mobile application development and platform architecture
A mobile crowdfunding platform designed to make fundraising more accessible while expanding reach and user participation.
Traditional fundraising channels had limited reach and made it difficult to engage a broader audience of potential contributors.
Designed and developed a mobile-first crowdfunding experience that simplified campaign discovery, contribution workflows, and user engagement.
Expanded the platform's reach through mobile accessibility and provided users with a more convenient way to discover and support fundraising campaigns.
Mobile application development and real-time location tracking
A driver-focused mobile application for tracking container transportation and monitoring real-time driver locations.
Operations teams needed better visibility into the location and movement of trucks transporting containers.
Developed a mobile application that continuously captured driver location data and communicated it to backend services for real-time tracking and operational monitoring.
Improved fleet visibility and enabled operations teams to monitor container movements and driver locations in real time.
Full-stack and mobile application development
A mobile e-commerce platform enabling customers to browse grocery products, manage their carts, and place orders for delivery.
Grocery stores needed a digital channel to reach customers and support online ordering without relying solely on physical store visits.
Built a mobile-first shopping experience covering product discovery, cart management, checkout, order processing, and delivery workflows.
Enabled grocery stores to establish an online sales channel and provided customers with a more convenient way to purchase groceries.
Experience
Progressive responsibility from frontend modernization to mobile leadership and full-stack system design.
2026 - Present
Maya Bank Philippines
Handles cross-platform mobile application development, CI/CD initiatives, and internal product engineering while collaborating across teams to deliver scalable and maintainable solutions.
2022 — 2026
Shiptek Solutions Corp.
Leads cross-platform mobile and full-stack delivery across logistics, telemedicine, medicine delivery, and port operations.
2021 — 2022
Shiptek Solutions Corp.
Led mobile development for a container-delivery driver application and its supporting real-time services.
2019 — 2021
Shiptek Solutions Corp.
Developed and modernized frontend applications across the company’s web product portfolio.
Capabilities
A production stack spanning cross-platform clients, APIs, data, messaging, and delivery.
React · TypeScript · Angular · Vue.js · Next.js · Tailwind CSS
.NET · Node.js · Express.js · Bun · REST API design
Flutter · Dart · Android · iOS · Offline-first architecture
Docker · CI/CD pipelines · Git · Multi-platform releases
MongoDB · MySQL · Firestore · Redis
WebSockets · MQTT · Apache Kafka · Firebase FCM
Agile/Scrum · Jira · Postman · RedisInsight · Technical documentation
For a role discussion, include the team, role, and the mobile or backend problems you’re working on.