Co-Founder @LifePlanner_co. Engineering @spairally . Engineering Educator @reduzer_tech
Joined March 2021
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- Following1.7K
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- Likes88.6K
SamProgramiz retweeted
Set goals, track progress, and stay motivated. Achieve your big dreams, one small step at a time.
Download Life Planner now: App Store: thelifeplanner.co/apple/x | Google Play Store: thelifeplanner.co/play/x
#GoalSetting #PersonalGrowth
SamProgramiz retweeted
This will be a goldmine
๐ข ๐ฆ๐ฃ๐๐๐๐๐ฅ ๐๐ก๐ก๐ข๐จ๐ก๐๐๐ ๐๐ก๐ง! ๐
Cross-platform abstractions leak. For long-term codebases, native-only engineering is the ultimate future-proof bet.
Welcoming ๐ฆ๐ฎ๐บ๐๐ฒ๐น ๐ข๐๐ถ๐ป๐ผ (@SamProgramiz), Co-Founder @Life Planner, to #dcke26 & #flutterconke26!
๐๏ธ "๐๐๐๐๐ฟ๐ฒ-๐ฃ๐ฟ๐ผ๐ผ๐ณ ๐ฌ๐ผ๐๐ฟ ๐๐ฝ๐ฝ๐ ๐ช๐ถ๐๐ต ๐ก๐ฎ๐๐ถ๐๐ฒ-๐ข๐ป๐น๐ ๐ ๐ผ๐ฏ๐ถ๐น๐ฒ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐ถ๐ป๐ด"
Drawing on 9 years across Life Planner, mUzima, & Vanderbilt, Samuel will unpack:
โข ๐ฆ๐๐ฟ๐๐ถ๐๐ถ๐ป๐ด ๐ข๐ฆ ๐๐ต๐๐ฟ๐ป: Structuring codebases that age well through yearly OS updates.
โข ๐ง๐ต๐ฒ ๐ฅ๐ฒ๐ฎ๐น ๐๐ผ๐๐ ๐ผ๐ณ ๐๐ฎ๐๐ฒ๐ฟ๐: Where "safe" cross-platform bets introduced hidden technical debt.
โข ๐ ๐ผ๐ฑ๐๐น๐ฎ๐ฟ ๐๐ผ๐๐ป๐ฑ๐ฎ๐ฟ๐ถ๐ฒ๐: Dependency strategies that treat the platform as a feature, not a blocker.
โข ๐ ๐ฎ๐ธ๐ถ๐ป๐ด ๐๐ต๐ฒ ๐๐ฎ๐๐ฒ: How to advocate for native architecture within your team.
๐ Session breakdown: bit.ly/samBeyondstacks
Step Beyond Stacks with us this November in Nairobi! ๐ฐ๐ช
๐ Nairobi | Nov 5โ6
๐๏ธ Lock in your ticket: bit.ly/dcKE2026Tickets
SamProgramiz retweeted
Tired of manually logging every transaction?
We now support automatic syncing for Mobile Money (M-PESA, MTN, Airtel), major Banks (KCB, Equity, ING), SACCOs, and even CSV imports.
SamProgramiz retweeted
This is a good one.
๐ข ๐ฆ๐ฃ๐๐๐๐๐ฅ ๐๐ก๐ก๐ข๐จ๐ก๐๐๐ ๐๐ก๐ง! ๐
Cross-platform abstractions leak. For long-term codebases, native-only engineering is the ultimate future-proof bet.
Welcoming ๐ฆ๐ฎ๐บ๐๐ฒ๐น ๐ข๐๐ถ๐ป๐ผ (@SamProgramiz), Co-Founder @Life Planner, to #dcke26 & #flutterconke26!
๐๏ธ "๐๐๐๐๐ฟ๐ฒ-๐ฃ๐ฟ๐ผ๐ผ๐ณ ๐ฌ๐ผ๐๐ฟ ๐๐ฝ๐ฝ๐ ๐ช๐ถ๐๐ต ๐ก๐ฎ๐๐ถ๐๐ฒ-๐ข๐ป๐น๐ ๐ ๐ผ๐ฏ๐ถ๐น๐ฒ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐ถ๐ป๐ด"
Drawing on 9 years across Life Planner, mUzima, & Vanderbilt, Samuel will unpack:
โข ๐ฆ๐๐ฟ๐๐ถ๐๐ถ๐ป๐ด ๐ข๐ฆ ๐๐ต๐๐ฟ๐ป: Structuring codebases that age well through yearly OS updates.
โข ๐ง๐ต๐ฒ ๐ฅ๐ฒ๐ฎ๐น ๐๐ผ๐๐ ๐ผ๐ณ ๐๐ฎ๐๐ฒ๐ฟ๐: Where "safe" cross-platform bets introduced hidden technical debt.
โข ๐ ๐ผ๐ฑ๐๐น๐ฎ๐ฟ ๐๐ผ๐๐ป๐ฑ๐ฎ๐ฟ๐ถ๐ฒ๐: Dependency strategies that treat the platform as a feature, not a blocker.
โข ๐ ๐ฎ๐ธ๐ถ๐ป๐ด ๐๐ต๐ฒ ๐๐ฎ๐๐ฒ: How to advocate for native architecture within your team.
๐ Session breakdown: bit.ly/samBeyondstacks
Step Beyond Stacks with us this November in Nairobi! ๐ฐ๐ช
๐ Nairobi | Nov 5โ6
๐๏ธ Lock in your ticket: bit.ly/dcKE2026Tickets
SamProgramiz retweeted
๐ข SPEAKER ANNOUNCEMENT! ๐
Same app. Same features. Same Supabase backend. Two completely different architectures.
Welcoming Siro Devs (@SiroFitsKe), Software Engineer & Tech Writer, to #dcke26 & #flutterconke26!
๐๏ธ "Rewriting My Flutter App to Native Android: A Side-by-Side Architecture Breakdown"
Here is what Siro will break down:
โข Real Code Comparison: Flutter vs. Kotlin & Jetpack Compose side by side.
โข State & DI: How state management and dependency injection differ in practice.
โข Concurrency & Nav: Real-world flows across Dart async vs. Kotlin Coroutines/Flows.
โข The Unspoken Costs: What native actually bought, and the build-time trade-offs nobody talks about.
๐ Session breakdown: bit.ly/siroBeyondstacksStep
Beyond Stacks with us this November in Nairobi! ๐ฐ๐ช
๐ Nairobi | Nov 5โ6
๐๏ธ Lock in your ticket: bit.ly/dcKE2026Tickets
SamProgramiz retweeted
๐ข ๐ฆ๐ฃ๐๐๐๐๐ฅ ๐๐ก๐ก๐ข๐จ๐ก๐๐๐ ๐๐ก๐ง! ๐
Cross-platform abstractions leak. For long-term codebases, native-only engineering is the ultimate future-proof bet.
Welcoming ๐ฆ๐ฎ๐บ๐๐ฒ๐น ๐ข๐๐ถ๐ป๐ผ (@SamProgramiz), Co-Founder @Life Planner, to #dcke26 & #flutterconke26!
๐๏ธ "๐๐๐๐๐ฟ๐ฒ-๐ฃ๐ฟ๐ผ๐ผ๐ณ ๐ฌ๐ผ๐๐ฟ ๐๐ฝ๐ฝ๐ ๐ช๐ถ๐๐ต ๐ก๐ฎ๐๐ถ๐๐ฒ-๐ข๐ป๐น๐ ๐ ๐ผ๐ฏ๐ถ๐น๐ฒ ๐๐ป๐ด๐ถ๐ป๐ฒ๐ฒ๐ฟ๐ถ๐ป๐ด"
Drawing on 9 years across Life Planner, mUzima, & Vanderbilt, Samuel will unpack:
โข ๐ฆ๐๐ฟ๐๐ถ๐๐ถ๐ป๐ด ๐ข๐ฆ ๐๐ต๐๐ฟ๐ป: Structuring codebases that age well through yearly OS updates.
โข ๐ง๐ต๐ฒ ๐ฅ๐ฒ๐ฎ๐น ๐๐ผ๐๐ ๐ผ๐ณ ๐๐ฎ๐๐ฒ๐ฟ๐: Where "safe" cross-platform bets introduced hidden technical debt.
โข ๐ ๐ผ๐ฑ๐๐น๐ฎ๐ฟ ๐๐ผ๐๐ป๐ฑ๐ฎ๐ฟ๐ถ๐ฒ๐: Dependency strategies that treat the platform as a feature, not a blocker.
โข ๐ ๐ฎ๐ธ๐ถ๐ป๐ด ๐๐ต๐ฒ ๐๐ฎ๐๐ฒ: How to advocate for native architecture within your team.
๐ Session breakdown: bit.ly/samBeyondstacks
Step Beyond Stacks with us this November in Nairobi! ๐ฐ๐ช
๐ Nairobi | Nov 5โ6
๐๏ธ Lock in your ticket: bit.ly/dcKE2026Tickets
SamProgramiz retweeted
Track your time effortlessly. See where your day went with a digital stopwatch and colorful pie charts.
Download now: App Store: thelifeplanner.co/apple/x | Google Play Store: thelifeplanner.co/play/x
#TimeManagement #Productivity
SamProgramiz retweeted
Mkuje muone nikiongelea some technical things huko Fluttercon
๐ข ๐ฆ๐ฃ๐๐๐๐๐ฅ ๐๐ก๐ก๐ข๐จ๐ก๐๐๐ ๐๐ก๐ง! ๐
Stop writing boilerplate method channels just to call native code. You don't have to leave Dart.
Welcoming ๐ ๐ฒ๐น๐ธ๐๐ฒ๐ฑ๐ฒ๐ธ ๐๐ต๐ผ๐๐ถ (@chotixity), Software Engineer, to #flutterconke26 & #dcke26!
๐๏ธ "๐๐ผ๐ถ๐ป๐ด ๐ก๐ฎ๐๐ถ๐๐ฒ ๐ถ๐ป ๐๐ฎ๐ฟ๐: ๐๐ถ๐ฟ๐ฒ๐ฐ๐ ๐ก๐ฎ๐๐ถ๐๐ฒ ๐๐ป๐๐ฒ๐ฟ๐ผ๐ฝ ๐๐ถ๐๐ต ๐๐ก๐๐ด๐ฒ๐ป & ๐๐๐๐ด๐ฒ๐ป"
Here is what Melkzedek will unpack:
โข ๐๐ถ๐๐ฐ๐ต๐ถ๐ป๐ด ๐ ๐ฒ๐๐ต๐ผ๐ฑ ๐๐ต๐ฎ๐ป๐ป๐ฒ๐น๐: When direct native interop is the better choice.
โข ๐จ๐ป๐ฑ๐ฒ๐ฟ ๐๐ต๐ฒ ๐๐ผ๐ผ๐ฑ: How JNIgen and FFIgen auto-generate type-safe Dart bindings.
โข ๐๐ฒ๐ฐ๐ถ๐๐ถ๐ผ๐ป ๐ ๐ฎ๐๐ฟ๐ถ๐
: Knowing exactly when to reach for JNIgen vs. FFIgen.
โข ๐๐ป๐ฑ-๐๐ผ-๐๐ป๐ฑ ๐ช๐ฎ๐น๐ธ๐๐ต๐ฟ๐ผ๐๐ด๐ต: Calling native Android and iOS APIs straight from Dart.
๐ Session breakdown: bit.ly/chotiFlutterconke26
Step Beyond Stacks with us this November in Nairobi! ๐ฐ๐ช
๐ Nairobi | Nov 5โ6
๐๏ธ Lock in your ticket: bit.ly/dcKE2026Tickets
SamProgramiz retweeted
Ever hit the end of the month and wonder, "Wait, where did all my money go?" ๐ค๐ธ
Itโs time to stop guessing. Life Planner makes tracking your spending effortless.
Hereโs a quick 3-step guide to setting up your budgets. ๐๐งต
SamProgramiz retweeted
Design your day with purpose. Life Planner lets you schedule, prioritize, and set remindersโall in one place.
Download now: App Store: thelifeplanner.co/apple/x | Google Play Store: thelifeplanner.co/play/x
#Scheduling #TimeManagement
SamProgramiz retweeted
Do you devs hate intro and explainer video or getting a designer is the problem or you guys think it expensive to have one!
I create such videos for Playstore.
SamProgramiz retweeted
Start your day organized with just a tap! Quickly add tasks, set due dates, and prioritizeโLife Planner helps you stay on top of it all!
Download now: App Store: thelifeplanner.co/apple/x | Google Play Store: thelifeplanner.co/play/x
#Productivity #TaskManagement
SamProgramiz retweeted
When I get a 200 from the request, I create a pending transaction with the checkout request id.
I match incoming callbacks against it.
This also helps with manual queries if the callbacks fail to arrive.
Weโll still acknowledge receipt of the Webhook even if we failed to match it to any transaction.
You can take this further by adding auth tokens to the callback urls, whitelist IP addresses but, if you can guess the merchant request ID that is in a pending transaction, you deserve the spoils of the loot.
When you send the Express request, you get the two unique values.
MerchantRequesrID and CheckoutRequestID.
These are your first line of defence. Validate your webhooks against them. It should match at lease one record with this.
Daraja is well designed even though they donโt follow webhooks best practices like signing payloads. But you have to understand, a lot of what Mpesa Express is, is unique to what most of the industry does.
Also rate limit failures.
SamProgramiz retweeted
Stop guessing where your money goes.
Meet Life Planner: the all-in-one hub for your tasks, habits, journaling, and finances.
Want to master your budget? Hereโs a quick 1-step guide to getting your spending in check. ๐๐งต
SamProgramiz retweeted
This year, Iโm skipping the trip to Uganda for #DroidconUg, as much as Iโm a speaker. It came a little too early, and I need time to rest after #StanChartMarathon 2026. Besides, I canโt afford the fare right now. Itโs not yet the end month! ๐
So, Iโll do my session virtually.
SamProgramiz retweeted
Developers, this is for you. please take your payment callbacks seriously. ๐
Yesterday, out of curiosity, I tested an M-Pesa integration on a critical live system. To my shock, I was able to submit a crafted payload that resulted in a payment being marked as successful.
Never trust a payment callback blindly.
Best practices:
- Verify callbacks against the payment provider.
- Validate the Merchant Request ID and transaction details.
- Verify payment status independently where possible.
- Restrict callback access by IP where supported.
- Make callbacks idempotent to prevent duplicate processing.
- Never mark a payment as successful based on an unverified payload.
One weak payment integration can undermine the integrity of an entire system.
Security is not just about protecting your APIs. It's about protecting the business logic behind them. ๐
