Richard Olajuwon

Full Stack Software Engineer • AI Engineer

[Richard Olajuwon @RichardOlajuwon]

Technically Proficient Software & AI Engineer

I work with Businesses to Solve Complex Problems with Scalable, Impact-Driven Software Solutions that not only works but Drives Real Business Impact.

Discover more at https://t.co/CwW4daMqS2

[Richard Olajuwon @RichardOlajuwon]

There's no "perfect" architecture in backend development.
Only tradeoff that fit the problem you're solving today.

Great backend engineers don't search for the best design.
They weigh the options. Make a decision, And build knowing the context will change.

#BackendEngineering

[Richard Olajuwon @RichardOlajuwon]

You're not too old to learn engineering.

You're not too young either.

The right age to start is the age you are now.

I've seen:

• Career changers at 40 become senior engineers.
• Self-taught developers outperforms grads.

Age is irrelevant.
Action is everything.

[Richard Olajuwon @RichardOlajuwon]

Great backend engineers understand caching.

Not just Redis or Memcached.

But caching as a strategy.

I've seen a single caching layer reduce server load by 90%.

The fastest database query is the one you never run.

[Richard Olajuwon @RichardOlajuwon]

If you want to get dangerously good at system design, learn these concepts.

What else should make the list?

[Richard Olajuwon @RichardOlajuwon]

Most engineers learn system design backwards.

You don't become good at system design by memorizing diagrams.
You become good by understanding the physics of distributed systems.

Latency.
Durability.
Throughput.
Availability.
Cost.

Those 5 forces rule everything.

#SystemDesign

[Richard Olajuwon @RichardOlajuwon]

@officialABAT Mr. President, your government has to do something about the insecurity in Nigeria.

And also the religious leaders, prayers only doesn't solve problems, you have to back it up with actions. Call out the government.

#NigUniteAgainstInsecurity

[Richard Olajuwon @RichardOlajuwon]

What are the API architectural styles?

The diagram below shows the common API architectural styles in one picture:

1. REST
2. GraphQL
3. Web socket
4. Webhook
5. gRPC
6. SOAP

[Richard Olajuwon @RichardOlajuwon]

@_rain_miao_ Prompts get stucked, then hallucination begins.

[Richard Olajuwon @RichardOlajuwon]

Vibe coding only works when 80% of your effort goes into thinking and planning, and 20% goes into letting the AI execute.

[Richard Olajuwon @RichardOlajuwon]

@aitechbrief You have to tell AI what to do and how do it, else they're gonna hit a roadblock fast and start hallucinating

[Richard Olajuwon @RichardOlajuwon]

@WatcherGuru Wen BTC $200k?

[Richard Olajuwon @RichardOlajuwon]

Topics to Understand as a Backend Dev:

Caching
Proxying
Rate limiting
Routing
Compression
Idempotency
Indexing
Replication
Sharding
Consistency
CAP theorem
Distributed locking
Leader election
Consensus algorithms
Fault tolerance

#BackendDev #SystemsDesign #SoftwareEngineering

[Richard Olajuwon @RichardOlajuwon]

We are not the same

[Richard Olajuwon @RichardOlajuwon]

The best programming language: English.

Language choice doesn't matter anymore.

Instead;
Master critical thinking.
Go hard on testing practices.

The best developers aren't loyal to languages.
They're loyal to making customers happy.

[Richard Olajuwon @RichardOlajuwon]

Checklist to Run before you deploy to production:

[1] Security basics

[2] Authentication and access

[3] Database and data safety

[4] Deployment and infrastructure

[5] Reliability and observability

[6] launch readiness

Cannot check every box?
You are not ready to ship.

[Richard Olajuwon @RichardOlajuwon]

@abhitwt There are levels to been a cracked Dev

[Richard Olajuwon @RichardOlajuwon]

You need to be good at coding to be good at vibe-coding.

When your project hits 30+ files, fundamentals is the only thing that helps you catch AI mistakes.

[Richard Olajuwon @RichardOlajuwon]

These 6 codebase taught me more than a CS degree:

[Richard Olajuwon @RichardOlajuwon]

@WatcherGuru Finally some good news