Rachael Adeyemi

Backend Developer | Chess ♟️ | System Design | Learning, thinking, and growing daily.

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Yeah...plus the money 😊
That's not an exception 😂.

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Being in the tech industry gives you transferable skills and knowledge that make it easier to explore and contribute to other industries without having to rebuild your career from ground up.

[Rachael Adeyemi @raebuilds_]

@smartnakamoura I love convenience in all forms
For myself and others around me.

[Akintola Steve @Akintola_steve]

Heads up:

JWT is not authentication.

It's a signed note.

Authentication already happened before the JWT was issued.

Think about it.

A user enters their email and password.

Your application verifies the credentials.

That verification step is authentication.

Only after that does your server generate a JWT.

The JWT is simply a signed statement saying:

"I already authenticated this user."

Later, when the user makes another request, the server verifies the token's signature and trusts the claims inside it.

The JWT didn't authenticate the user.

Your application did.

The JWT is just carrying proof that authentication happened at some point in the past.

This distinction matters because many engineers treat JWT as a security solution.

It's not.

It's a transport mechanism for identity claims.

You still need to think about:

• Token expiration

• Revocation

• Refresh tokens

• Authorization

• Session invalidation

A valid JWT only tells you:

"Someone successfully authenticated at some point, and this token hasn't been tampered with."

Whether that user should be allowed to act right now is an entirely different question.

[Rachael Adeyemi @raebuilds_]

A pen and a paper...

Writing has a lot more psychological benefits than we give it credit for.

[Tech4Dev @Tech4DevHQ]

The Day 3 Career Fair brought together industry leaders, recruiters, and hiring professionals to connect fellows with valuable career opportunities and insights across different sectors.

Our fellows had the opportunity to engage with:

✨ Ogbleba Moses – HR/Operations Lead, AXON ANALYTICS LTD
✨ Bright Williams – Founder/CEO, Willoid PBS (HR Consulting)
✨ Amy Oloo – Associate, KPMG East Africa
✨ Steve Soo – Senior Technology Risk Consultant, KPMG East Africa
✨ Omolara Norman – Head of Talent Acquisition, Wema Bank
✨ Omotola Oloyede – Infinion Technologies
✨ Joannapaul Ibiabor – Head Talent Acquisition & Recruitment, U-Connect

From networking opportunities to career conversations and recruitment insights, the session created meaningful connections for fellows preparing for the future of work.

[Tech4Dev @Tech4DevHQ]

DAY 1 is here!

The Women Techsters Fellowship Career Week 2026 officially begins today under the theme: *Learn. Earn. Thrive: Women Building Digital Futures Now.*

Today’s Opening & Capstone Showcase brings together an incredible lineup of speakers, recruiters, industry leaders, and hiring professionals shaping the future of work and opportunities in tech.

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Hola 👋🏾

[Akintola Steve @Akintola_steve]

Backend Engineers throw Redis into every architecture nowadays like it’s a compulsory tech stack.

Meanwhile, some applications genuinely do not need Redis at all.

So, when exactly should Redis actually be used?

Real practical scenarios where Redis makes sense?

[Rachael Adeyemi @raebuilds_]

Forgot to drop this yesterday.
But yeah...

It's Career Week guyyss💃...
So much to learn, unlearn, relearn, and take home. 🍀

#Tech4Dev #WomenTechsters #WTFCareerWeek2026 #Tech4DevAtTen

[Rachael Adeyemi @raebuilds_]

Implemented PostGIS into the backend of the product I’m building today.

Something like: “show listings near me”

actually involves:
~ Spatial indexing
~ Distance calculations
~ Optimized queries
~ Geometry vs geography handling
~ Enabling PostgreSQL Postgis extensions

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Good morning Smart

[Rachael Adeyemi @raebuilds_]

It's the end of the week
Do it afraid 🥰

[Smart👨‍💻 | Software Engineer @smartnakamoura]

the fastest way to learn in tech is to build something you actually need.

tutorials won't save you. documentation will humble you. but shipping something real? that changes how your brain works.

stop consuming and start building.

[Rachael Adeyemi @raebuilds_]

@DabereNnamani It's a pleasure meeting you Janet❤️

[Rachael Adeyemi @raebuilds_]

@smartnakamoura I'm definitely coming back to this...

[Rachael Adeyemi @raebuilds_]

Yoo...
It’s Monday again

Still on the journey of learning, growing, and building real impact 🍀

[Rachael Adeyemi @raebuilds_]

Subscribe to The System Design Newsletter https://t.co/qqaTsCSINe

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Women dey o ☺️
Hii 👋

[Rachael Adeyemi @raebuilds_]

@smartnakamoura Good morning Smart