Ken Mwangi

Software Engineer @African_RE | Building tech for Africa’s property market |

[Ken Mwangi @ken_cipher]

That's me

https://t.co/WRiMBKZe7W

[Ken Mwangi @ken_cipher]

@bee_soze @Safaricom_Care Same here! @Safaricom_Care Why should I opt in Zidii MMF if i have an account with funds? mmeanza ukoraa

[Ken Mwangi @ken_cipher]

@ICTAuthorityKE 😂😂 be serious. It's free on YouTube buana

[Ken Mwangi @ken_cipher]

@GathogoBMwangi @NCBABankKenya This one has never failed me. As you have said transactions are quick!

[Ken Mwangi @ken_cipher]

@mureithi_me GitHub: https://t.co/rKUplrg75q
https://t.co/WRiMBKZe7W

[Ken Mwangi @ken_cipher]

@tech_tafari @_celestino127 @mbiebuz @SafaricomPLC @paystack @Tunaresq We have used @paystack for seamless payments at @African_RE in the last 2+ years. First, Daraja documentation feels like Nairobi legacy drainage system, can't be pieced together. What about the 3 weeks manual KYC? Wacha ikae

[Claude @claudeai]

We're launching Claude Community Ambassadors. Lead local meetups, bring builders together, and partner with our team.

Open to any background, anywhere in the world.

Apply: https://t.co/DTQBAzgQug

[Ken Mwangi @ken_cipher]

@vilcomnetworks But when I call for you being offline 2 days is where you draw the line? Bure kabsa

[Akhilesh Mishra @livingdevops]

You've been using Linux for years. But you're still doing things the hard way.

Here are 7 commands that'll save you hours on terminal

1. Forgot to add sudo?
- Type `sudo !!`
- It repeats your last command with sudo. No retyping.

2. Just created a file?
- Use `vim !$` to open it.
- The !$ grabs the last thing you typed.

3. Can't remember that command?
- Press Ctrl + R and start typing.
- It searches your entire command history.

4. Made a typo in a long command?
- Type `fc`
- It opens your last command in an editor. Fix it and save. Done.

5. Jumping between folders?
- Use pushd /some/path to save a location.
- Use popd to go back.
- No more typing long paths over and over.

6. Want to see your folder structure?
- Type `tree -L 2`
- Shows everything like an actual tree. Much cleaner than ls.

7. Need to go back to your last folder?
- Just type cd -
- Takes you right back. Simple.

Bonus:

Stop writing `cat file | grep something`
- Just write `grep something file`
- Does the same thing. Way cleaner.

I've used Linux for years. These small commands save me time every single day.

Bookmark this. Your future self will thank you.

[Dishant Miyani @dishantwt_]

you can get so much value out of a small channel

[Yahiya @yahiyadev]

Since last 2 days I was exploring this GitHub repo. It contains Production-grade Go microservices repo worth studying

Link: https://t.co/wp37hTz3Y8

Here are some key learnings that I found informative to devs like me:

- Vertical Slice Architecture - feature folders, not layers

- CQRS + Go-MediatR - clean separation, pipeline behaviors
- Event-driven with RabbitMQ - async communication
- OpenTelemetry + Jaeger - distributed tracing
- gRPC for inter-service calls
- uber-go/fx for dependency injection
- Full test coverage (unit/integration/e2e)

It shows how to minimize coupling and maximize cohesion in real microservices.

[Anderson Nascimento @andersonc0d3]

Live Debugging Techniques for the Linux Kernel, Part 1 of 3
https://t.co/EECnYo2yR0

Live Debugging Techniques for the Linux Kernel, Part 2 of 3
https://t.co/R447vK5M0f

Live Debugging Techniques for the Linux Kernel, Part 3 of 3
https://t.co/UKA9N9Yot2

[Ken Mwangi @ken_cipher]

https://t.co/JGHal3iCAn

[Abhishek Singh @0xlelouch_]

Ledger before UI update

Idempotency everywhere

Rate limit everything

Tokenize sensitive data

Message queues for money flows

Version APIs strictly

Feature flags for risky releases

Canary deploy financial changes

Rollbacks must be instant

High chaos testing

Double-entry ledger invariants (debits = credits, always)

Reconciliation jobs daily (and on-demand) against processor/bank statements

Immutable audit trail for every state change (who, what, when, why)

Separate authorization vs capture vs settlement states (never “one status”)

Never trust client inputs for money amounts, currency, or fees

Validate currency + rounding rules explicitly (minor units, bankers rounding, etc.)

Use strong id keys for external providers (dedupe webhooks + retries)

Store raw webhook payloads + signatures for dispute/debugging

Exactly-once is a myth, design for at-least-once with dedupe

Outbox pattern for publishing financial events reliably

Backpressure and circuit breakers around payment providers

Strict timeouts + bounded retries (with jitter) for external calls

Manual review lane for high-risk actions (limits, velocity, anomaly triggers)

Principle of least privilege for IAM, DB, queues, and secrets

Encrypt PII at rest + in transit, and rotate keys regularly

Secrets never in env files in prod; use a secrets manager + rotation

Data retention policies (PII deletion, log retention, legal holds)

Separate prod vs non-prod credentials and accounts (no shared anything)

Access logs for admin actions and privileged reads (PII access included)

Auditability: every balance must be explainable from events + ledger entries

Compliance-ready logging: structured, correlation IDs, no sensitive payloads

Pen tests + threat modeling before major launches

Regular security reviews + dependency scanning in CI

Fraud controls: device fingerprinting, IP reputation, behavioral signals

Limits everywhere: per user, per account, per instrument, per time window

Disaster recovery drills (restore DB, replay events, reconcile balances)

SLOs for critical flows (authorize/capture/withdrawal), alert on user pain

“Break glass” procedures for incidents (with audited access)

Independent auditor-friendly artifacts: policies, runbooks, diagrams, controls

Periodic internal audits of controls + access + reconciliation outcomes

[Ken Mwangi @ken_cipher]

@LegacySiu Courtois Thibaut

[Ken Mwangi @ken_cipher]

Kenya’s Affordable Housing Program Stalls Amid Delays, Poor Quality, and Bureaucracy - The success of the affordable housing program serves as the ultimate test for the governm https://t.co/55mVkIWNiS via @African_RE

[Ken Mwangi @ken_cipher]

High Deposits Are Pushing Middle-Income Kenyans Towards Long-Term Renting - As the government continues to promote home ownership through initiatives such as the Affordable Housing Program%2 https://t.co/wtsqvj80re via @African_RE

[Ken Mwangi @ken_cipher]

LSK Raise Alarm Over Growing Land Acquisition Disputes, Warns Investor Confidence Is At Risk - The Society says it may pursue legal action in upcoming disputed takeovers, and is https://t.co/G6vMwBmh76 via @African_RE

[Ken Mwangi @ken_cipher]

@MusaliaMudavadi @WilliamsRuto @MamaRachelRuto How? Yakamoto Musalia. The shenanigans with this lot is diabolical

[Ken Mwangi @ken_cipher]

@husseinmoha @Harambee__Stars Call out the politicians for hoarding the tickets.