2016 — 2018 · Astra
Automotive
Dealer sales, after-sales service booking, home service, spare parts and warehousing for Honda, Toyota and Daihatsu — connected to SAP.
Open to remote & work-from-anywhere roles
Sunu Permanajati
Senior Mobile & Frontend Developer
I build mobile and web software for the physical world — vehicles, workshops, warehouses and battery networks — with Flutter, Kotlin, Next.js and AI. Software that holds up in the field, not just in a demo.
- 10+
- years shipping production mobile apps
- 14,000
- Electrum users on the EV customer app I rebuilt in Flutter
- 550+
- battery swap stations supported by the ops app I built
- 3+ yrs
- working in a fully remote role
Electrum figures: users and stations as of H1 2026 via kumparan; fleet, daily swaps, CO2 and funding for 2025 via TBS.
About
I’m a senior mobile & frontend developer with 10+ years of building production apps — Flutter and Kotlin on mobile, Next.js and TypeScript on the web, and AI across the whole workflow.
My background is an unusual combination: automotive at Astra, e-commerce at Bhinneka.com, and electric mobility, infrastructure and IoT at Electrum. Across all three I’ve built apps that plug into the systems that actually run the business — SAP at Astra, Odoo ERP at Electrum — for customers, technicians, warehouse staff and factory teams.
I work end to end rather than in one layer, because most real problems live in the seams between app, API and operations — and I care most about whether the person holding the phone, a rider or a technician in a service bay, can actually use what I ship.
I’ve worked fully remote for over three years and I’m looking for a remote, work-from-anywhere team where that way of working is the default.
Domain expertise
Three industries, one thread: software for the people who sell, service and run physical things.
2018 — 2023 · Bhinneka.com
E-commerce
B2C and B2B shopping apps, a seller center and in-app chat for one of Indonesia’s long-running online retailers.
2023 — now · Electrum
EV, infrastructure & IoT
EV rentals, 550+ battery swap stations, IoT batteries, workshops and manufacturing QC for a 15,000-motorcycle fleet — integrated with Odoo ERP.
Selected work
Electrum · Mobile
EV customer app, rebuilt from Kotlin to Flutter
Rewrote the customer app from native Kotlin to Flutter to ship on both Android and iOS. It now powers the daily experience of Electrum’s 14,000 users — EV rentals, top-ups and real-time vehicle monitoring — a user base that more than doubled year on year.
Electrum · Mobile
Field operations app for a battery-swap network
A mobile app for the daily infrastructure work behind 550+ battery swap stations across Jabodetabek and Surabaya — a network handling 19,000+ swaps a day that commercial drivers rely on to stay on the road.
Electrum · Web
Workshop & service management platform
Web platforms for internal and partner workshops, used across every Electrum service center and integrated with Odoo ERP — giving operations clear insight into service duration, spare-part usage and workflow efficiency.
Electrum · Web
Factory-floor quality control
Digitizes quality control on the manufacturing floor with real-time data entry, integrated directly with Odoo ERP.
Electrum · Mobile
The company’s first mobile app, from a blank page
Joined as the only mobile engineer on a four-person team, helped shape the product, and shipped Electrum’s first native Android app. Also covered QA for IoT batteries and swap stations.
Bhinneka.com · E-commerce
B2C, B2B & seller apps for an online retailer
Android apps for Bhinneka’s consumer and business customers, the Seller Center app, and the Bhinneka DPS app in Flutter — with in-app chat via Sendbird. Later led mobile R&D, fully remote.
Astra · Automotive
After-sales apps for Honda, Toyota & Daihatsu
Service booking for Astra’s automotive brands, Toyota Home Service and Daihatsu Mobile Service — mechanics who come to the customer — and apps across Astra Motor’s H1 sales, H2 service (AHASS) and H3 spare-parts networks.
Astra · Automotive
Warehouse management connected to SAP
A mobile warehouse management system (WMS) integrated with Astra’s SAP, bringing stock operations on the warehouse floor in line with the ERP.
How I work
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Written by default
Pull requests, commit history and QA walkthroughs are written for the next engineer — clear enough to review asynchronously, across time zones.
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Small, reviewable changes
Unrelated work gets its own branch and pull request. When scope shifts, the description is rewritten to match what actually changed.
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Verified, not assumed
I trace a claim to the code that enforces it before building on it — and test field apps on the real devices people use, down to small screens and one-handed use.
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Root cause, or revert
If a fix makes things worse, it gets rolled back and re-diagnosed rather than patched over. Rollouts and migrations are thought through before production, not during.
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AI-native, end to end
I develop with AI coding agents from design to release, run automated AI code review and security checks before every pull request, and integrate AI into apps and team workflows — so the humans reviewing can focus on the decisions that matter.
Experience
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May 2023 — Present · Jakarta, hybrid
Electrum PT Energi Kreasi Bersama
- Sr. Mobile & Frontend DeveloperMay 2025 —
- Senior Mobile Software EngineerApr 2024
- Android EngineerMay 2023
Electrum, founded in 2021 as a TBS Group × GoTo Group joint venture, builds Indonesia’s electric-motorcycle ecosystem for commercial drivers in ride-hailing and logistics — vehicles, battery technology, swapping infrastructure and financing. In 2025 it ran 15,000 electric motorcycles and 19,000+ battery swaps a day, avoided 3,200 tons of CO2, and raised US$15M from ADB, the Australian Climate Finance Partnership and DBS Indonesia. I lead mobile development, and since 2025 also architect and build Electrum’s internal web applications as a frontend developer.
- Rewrote the customer app from Kotlin to Flutter for Android and iOS — now serving Electrum’s 14,000 users.
- Built the operations app supporting 550+ battery swap stations in Jabodetabek and Surabaya, handling 19,000+ battery swaps a day.
- Built web platforms for workshop management, asset tracking and factory QC, integrated with Odoo ERP and used across all service centers.
- Started as the only mobile engineer on a four-person team and shipped the company’s first mobile app.
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Jun 2018 — Mar 2023 · Jakarta, remote
Bhinneka.com PT Bhinneka Mentari Dimensi
- Mobile Development SpecialistJan 2020 — Mar 2023 · remote
- Mobile DeveloperJun 2018 — Jan 2020
Built and maintained Bhinneka’s mobile products — the B2C and B2B Android apps (Kotlin), the Seller Center app, and the Bhinneka DPS app (Flutter) — including Sendbird Chat integration. As a specialist, worked fully remote on mobile R&D: evaluating new technologies, architectures and frameworks to improve performance and scalability across the mobile ecosystem.
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May 2016 — Jun 2018 · Greater Jakarta
Astra Graphia Information Technology AGIT
Mobile Application Developer
Part of the mobile development team in CIS&T at Astra International’s head office, building apps that serve Astra Group’s automotive businesses — Indonesia’s largest automotive group — from the showroom to the service bay to the warehouse.
- After-sales: service booking apps for Astra’s automotive brands, plus Toyota Home Service and Daihatsu Mobile Service, which send mechanics to the customer’s home or office.
- Astra Motor H1, H2, H3: apps across Honda motorcycle sales (H1), service at AHASS workshops (H2) and genuine spare parts (H3).
- Warehouse: a warehouse management system (WMS) integrated with SAP.
- Customer apps: Honda Catalogue, DaihatsuKu, Digiroom, Motorku X and Anavigo.
Skills
- Mobile
- FlutterDartKotlinAndroidiOSJava
- Web
- Next.jsReactTypeScript
- AI
- AI integrationAI coding agentsAI code review & security checksAI-assisted QA & docs
- Architecture & integration
- MVIMVVMMVPREST APIsOdoo ERPSAPWMS
- Industries
- Automotive & after-salesE-commerce (B2C, B2B)Electric vehiclesInfrastructure & IoTManufacturing
- Ways of working
- Remote & async collaborationCode reviewReal-device QARelease management
Education
2010 — 2015
Universitas Islam Indonesia
Computer Engineering, Computer Software Engineering
FAQ
Are you available for remote work?
Yes. I’m open to fully remote and work-from-anywhere roles as a senior mobile (Flutter, Kotlin) or frontend (Next.js, React) developer, and I’ve worked in a fully remote role for more than three years.
What do you specialize in?
Cross-platform mobile development with Flutter, native Android with Kotlin, and web frontends with Next.js, React and TypeScript, built AI-native and integrated with ERP systems such as SAP and Odoo — especially software for real-world operations in automotive, e-commerce and electric mobility.
Which industries have you worked in?
Automotive at Astra (dealer sales, after-sales service booking, home service and spare parts, plus a warehouse management system connected to SAP), e-commerce at Bhinneka.com (B2C and B2B apps, seller center), and electric mobility, infrastructure and IoT at Electrum (EV rentals, battery swap stations, workshops and manufacturing, integrated with Odoo ERP).
Do you work with AI?
Yes. I work AI-native end to end: developing with AI coding agents, running automated AI code review and security checks before every pull request, and integrating AI into apps and engineering workflows.
How many years of experience do you have?
More than 10 years of professional mobile development since 2016, at Electrum, Bhinneka.com and Astra Graphia Information Technology (AGIT).
Where are you based?
Greater Jakarta, Indonesia (WIB, UTC+7). I work async-first and collaborate with teams across time zones.
How can I contact you?
By email at sunupermana@gmail.com or on LinkedIn at linkedin.com/in/sunupermana.
Contact
Hiring for a remote mobile or frontend role? Let’s talk.
- Email sunupermana@gmail.com
- LinkedIn linkedin.com/in/sunupermana
- GitHub github.com/sunupermana
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Location Greater Jakarta, Indonesia · UTC+7