Mobile Engineering
Android, KMP, and Flutter apps built for scale — clean architecture, real reliability metrics, and a release process that doesn't fight you.
Hi, I'm
Esther Sanusi
Senior Software Engineer — Android · iOS · Windows · macOS
I build technology that works.
6+ years. 20+ live apps. 10M+ people reached — across Android, iOS, Windows, and macOS, in fintech, legal tech, and civic tech. I grew from Android engineer to software engineer by shipping whatever the product needed. Now I'm folding data science and AI into that craft — not a side path, but how I build genuinely smarter products. Mastery is the point.
- 0Years experience
- 0Users reached
- 0Live apps shipped
- 0Platforms
About
About Esther
Esther Sanusi (formerly Esther Tinuade Jolugba) is a Senior Software Engineer based in Lagos, Nigeria. Over 6+ years she has shipped 20+ live applications reaching more than 10 million people across Android, iOS, Windows, and macOS — in fintech, legal tech, and civic tech.
She builds with Kotlin, Kotlin Multiplatform, Jetpack Compose, and Flutter, and is now extending her craft into data science and AI to build genuinely smarter products. She grew from an Android engineer into a software engineer by shipping whatever the product needed.
Beyond engineering, Esther is the founder of the Gritty Widows Foundation, which empowers low-income widowed families, and a relentless researcher and reader who is always widening the craft.
Selected work
Real apps. Tap to explore.
These are products I've actually shipped — fintech serving millions, legal tech used by courts, civic tech in citizens' hands. Tap any icon to open it inside the phone.
- Swipe / use the dots — page 1 is a live Glance screen
- Tab to an app · Enter to open · Esc to go back
Hi, I'm Esther 👋
Senior Software Engineer
Available for work
Career
Experience
-
FairMoney
Mar 2025 – PresentSoftware Engineer, Android · Lagos (Remote)
Nigeria's leading digital bank, 10M+ downloads. Building and maintaining savings features with KMP + Compose Multiplatform.
- Owned the FairDollar home screen + Help & remote-config FAQs (new USD savings product, 2025)
- Migrated 3 existing modules to KMP (2025); building Fairlock pre-liquidation & migrating SaversClub to KMP (2026)
- Optimized CleverTap (events + bots) and Customer.io analytics
- Hardened reliability — fixed flaky tests, added missing unit & UI tests
-
Lawpavilion
Jul 2020 – Mar 2025Senior Software Engineer / Team Lead · Lagos (Remote)
Led mobile across Lawpavilion's legal-tech suite for ~4 years. With no bandwidth to hire, I bridged the gap — which grew me from an Android engineer into a software engineer shipping across mobile and desktop.
- Lawpavilion Prime (native Android): co-led the Java→Kotlin migration (15K+ lines, −80% NPEs, crash 4.2% → 0.8%)
- Built My Research, all GPT features and LPInsight; optimized Lucene search across 2021→2025 case data (relevance +60%)
- Led 5 Flutter products — Elite, Elite Admin, MOJ, CJRP, CourtAI — with remote-config-driven links & content
- Built code-review culture (−40% prod bugs), cut releases 2 days → 4 hours, mentored juniors
-
Frontendlabs Ltd
Apr 2021 – Aug 2022Software Engineer / Team Lead (Contract) · London (Remote)
Agency work — led a team building internal, non-disclosed products and client apps.
- Led a team of 5; production apps with Kotlin & KMP
- GraphQL client architecture
- Multiple internal (NDA) apps + a community/church app
-
HNG Internship
Sep 2019 – Nov 2019Android Developer Intern · Remote
Built Android apps as program tasks — including KidStories, Car Park, and others.
-
She Code Africa
Jan 2020 – Apr 2020Mentee · Android track
Community-driven program that built my foundations in Android engineering — and where I first beat imposter syndrome.
Mobile
KotlinJavaDartJetpack ComposeKMPCompose MultiplatformFlutter
Architecture
MVVMMVIClean ArchitectureHiltKoin
Async
CoroutinesFlowRxJava
Data
RoomSQLDelightFirebaseDataStore
API
RESTGraphQLKtorRetrofitWebSockets
Quality
TDDRobolectricUI / Instrumentation testsGitLab CIGitHub Actions
Now
Deepening the craft
I'm folding data science and AI into the engineering I already do — not as a separate track, but to make the products I build sharper and more intelligent. It's how I pursue mastery: widening the craft, never abandoning it.
What I do
How we can work together
Technical Writing & Content
Engineering articles, tutorials, and developer-brand collaborations that explain hard mobile problems clearly — backed by shipped work.
Consulting & Mentorship
KMP migration strategy, mobile architecture reviews, and team mentoring — turning legacy Android into something your team is glad to maintain.
From the desk
Writing & Thoughts
In the open
Open Source & Activity
Contribution graph unavailable — view on GitHub ↗
Stats unavailable.
Languages unavailable.
Credentials
Certificates
Social proof
What people say
Beyond the code
Giving back & staying curious
Founder · Gritty Widows Foundation
I founded the Gritty Widows Foundation — equipping low-income widowed families with business skills, healthcare, education, and the financial footing to build sustainable enterprises and break the cycle of poverty. From grief to growth — restoring dignity, one widow at a time.
🔍 Relentless researcher
I love going deep — chasing how things actually work and why. It's the same instinct now pulling me toward data science and AI.
📚 Always reading
A constant reader — books are how I keep learning, widen the craft, and stay curious well beyond the screen.
Contact
Let's work together.
Full-time roles, freelance builds, collaborations, or a talk — tell me what you're making and I'll reply within a day.
📅 Book a 20-min intro call
Prefer talking it through? Grab a slot that works for you — roles, collabs, or a quick hello.